Abstract:
Reflectors for luminaires that are operative to reflect light provided by a lamp are described. The reflectors have a first side operative to reflect light and a second side operative to reflect light. The first side and the second side each include a number of steps. The first side and the second side form a substantially parabolic shape. The first side may be coupled to the second side via a flat portion that is configured to couple the reflector to a luminaire housing. The steps may comprise first steps and a second step, where the first step is coupled to the flat portion, and the second step is coupled to the first step. The second step may include a plurality of steps.

Description:
CROSS REFERENCE TO ELATED APPLICATIONS 
       [0001]    This patent application claims priority under 35 U.S.C. § 119 to U.S. Provisional Patent Application No. 60/909,231 entitled “Luminaire with Optics and Method of Mounting Thereof,” filed Mar. 30, 2007, and U.S. Provisional Patent Application No. 60/909,279, entitled “Luminaire with Optics and Method of Mounting Thereof,” filed Mar. 30, 2007. The complete disclosure of the above-identified priority application is hereby fully incorporated herein by reference. 
     
    
     BACKGROUND 
       [0002]    Fluorescent lamps are commonly used in various illumination applications. Fluorescent lamps generally provide similar light output to incandescent lamps with less power usage. However, because conventional fluorescent lamps are cylindrical, they emit light in all directions from the lamp. In most applications, this directs light away from the surface, object, or area that is to be illuminated, thus wasting energy. Furthermore, conventional fluorescent lamps are not capable of generating light of sufficient intensity for use in applications where the lamp is disposed a large distance from the area to be illuminated—for example—in warehouses with very high ceilings. 
         [0003]    Accordingly, for many applications, the fluorescent lamp is installed within a luminaire that includes a reflector for focusing the light toward the surface, object, or area that is to be illuminated. The shape and reflective properties of the reflector dictate the ultimate light pattern that emanates from the luminaire. Furthermore, the shape of the reflector dictates how far apart luminaires can be placed (also known as the spacing criteria) while still providing optimal lighting on the surface, object, or area that is to be illuminated. Even a small increase in the spacing criteria of luminaires can significantly reduce the number of luminaires required to adequately illuminate a large structure, such as a warehouse or factory floor. Moreover, for certain applications—for example, the illumination of a workspace in a factory—more intensely focused light is required than is available from conventional reflectors. 
         [0004]    Thus, a need exists in the art for reflectors that provide improved light distribution patterns for various applications. 
       SUMMARY 
       [0005]    The invention described in this application provides reflectors that can solve the above-described problems. In one aspect, the present invention provides a reflector for a luminaire that is operative to reflect light provided by a lamp. The reflector may have a first side that is operative to reflect light and a second side coupled to the first side operative to reflect light. The first side and the second side may comprise multiple steps. The reflector may be substantially parabolic in shape. The first side of the reflector may be coupled to the second side via a flat portion. 
         [0006]    The reflector may have a first step and multiple second steps. The first step may be coupled to the flat portion, and the second steps may be coupled to the first step. The first step may form a first angle with the flat portion, and the multiple second steps may form a second angle where they couple to the first step. Each of the second steps may form the second angle where each second step is coupled to either the first step ore one of the second steps. The first angle may be substantially 172 degrees. The second angle may be substantially 175 degrees. 
         [0007]    In another aspect of the invention, the steps may include a first step that forms a first angle with respect to the flat portion. The steps further may include a second step that forms a second angle with respect to the first step, a third step that forms a third angle with respect to the second step, a fourth step that forms a fourth angle with respect to the fourth step, and a fifth step that forms a fifth angle with respect to the fourth step. 
         [0008]    In another aspect of the invention, a reflector for a luminaire operative to reflect light provided by a lamp is described. The reflector includes a first side operative to reflect light and a second side operative to reflect light. The first side and the second side are coupled to a flat portion that is operative to reflect light. The first side and the second side each comprise multiple steps. The interface between the first side and the top portion is substantially v-shaped, and the interface between the second side and the top portion is substantially v-shaped. Each of the steps spans a vertical distance and a horizontal distance. 
         [0009]    In another aspect, the steps may include a first step, a second step, a third step, a fourth step, a fifth step, and a sixth step. In yet another aspect, the steps may include a first step, a second step, a third step, a fourth step, a fifth step, a sixth step, and a seventh step. In still another aspect, the steps may include a first step, a second step, a third step, a fourth step, a fifth step, a sixth step, a seventh step, and an eighth step. In another aspect, the steps result in a substantially curved reflector. BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is an illustration of an isometric view of a reflector for a luminaire according to an exemplary embodiment of the invention. 
         [0011]      FIG. 2  is an illustration of a top view of the exemplary reflector of  FIG. 1 . 
         [0012]      FIG. 3  is an illustration of a cross-sectional view of the exemplary reflector of  FIG. 1 . 
         [0013]      FIG. 4  is an illustration of another cross-sectional view of the exemplary reflector of  FIG. 1 . 
         [0014]      FIG. 5   a  is a zonal rumination plot for the exemplary reflector of  FIG. 1  using a single 32 watt T8 linear fluorescent lamp rated at 2850 lumens. 
         [0015]      FIG. 5   b  is a zonal lumination plot for the exemplary reflector of  FIG. 1  using two 32 watt T8 linear fluorescent lamps rated at 2850 lumens. 
         [0016]      FIG. 6  is an illustration of an isometric view of a reflector for a luminaire according to another exemplary embodiment the invention. 
         [0017]      FIG. 7  is an illustration of a top view of the exemplary reflector of  FIG. 6 . 
         [0018]      FIG. 8  is an illustration of a cross-sectional view of the exemplary reflector of  FIG. 6 . 
         [0019]      FIG. 9  is an illustration of another cross-sectional view of the exemplary reflector of  FIG. 6 . 
         [0020]      FIG. 10  is an illustration of another cross-sectional view of the exemplary reflector of  FIG. 6 . 
         [0021]      FIG. 11   a  is a zonal lumination plot for the exemplary reflector of  FIG. 6  using a single 32 watt T8 linear fluorescent lamp rated at 2850 lumens. 
         [0022]      FIG. 11   b  is a zonal lumination plot for the exemplary reflector of  FIG. 6  using two 32 watt T8 linear fluorescent lamps rated at 2850 lumens. 
         [0023]      FIG. 12  is an illustration of an isometric view of a reflector for a luminaire according to another exemplary embodiment of the invention. 
         [0024]      FIG. 13  is an illustration of a top view of the exemplary reflector of  FIG. 12 . 
         [0025]      FIG. 14  is an illustration of a cross-sectional view of the exemplary reflector of  FIG. 12 . 
         [0026]      FIG. 15  is an illustration of another cross-sectional view of the exemplary reflector of  FIG. 12 . 
         [0027]      FIG. 16   a  is a zonal rumination plot for the exemplary reflector of  FIG. 12  using a single 32 watt T8 linear fluorescent lamp rated at 2850 lumens. 
         [0028]      FIG. 16   b  is a zonal rumination plot for the exemplary reflector of  FIG. 12  using two 32 watt T8 linear fluorescent lamps rated at 2850 lumens, 
         [0029]      FIG. 17  is an illustration of an isometric view of a reflector for a luminaire according to another exemplary embodiment the invention. 
         [0030]      FIG. 18  is an illustration of a top view of the exemplary reflector of  FIG. 17 . 
         [0031]      FIG. 19  is an illustration of a side view of the exemplary reflector of  FIG. 17 . 
         [0032]      FIG. 20  is an illustration of a cross-sectional view of the exemplary reflector of  FIG. 17 . 
         [0033]      FIG. 21  is an illustration of another cross-sectional view of the exemplary reflector of  FIG. 17 . 
         [0034]      FIG. 22   a  is a zonal rumination plot for the exemplary reflector of  FIG. 17  using one 54 watt T5 lamp rated at 4400 lumens. 
         [0035]      FIG. 22   b  is a zonal lumination plot for the exemplary reflector of  FIG. 17  using two 54 watt T5 lamps rated at 4400 lumens spaced 1.062 inches from the top of the reflector. 
         [0036]      FIG. 22   c  is a zonal rumination plot for the exemplary reflector of  FIG. 17  using two 54 watt T5 lamps rated at 4400 lumens spaced 0.875 inches from the top of the reflector. 
         [0037]      FIG. 23  is an isometric view of a reflector for a luminaire according to another exemplary embodiment the invention. 
         [0038]      FIG. 24  is an illustration of a cross-sectional view of the exemplary reflector of  FIG. 23 . 
         [0039]      FIG. 25   a  is a zonal lumination plot for the exemplary reflector of  FIG. 23  using a single 32 watt T8 linear fluorescent lamp rated at 2850 lumens. 
         [0040]      FIG. 25   b  is a zonal rumination plot for the exemplary reflector of  FIG. 23  using two 32 watt T8 linear fluorescent lamps. 
         [0041]      FIG. 26  is an illustration of a top view of a reflector for a luminaire according to another exemplary embodiment of the present invention. 
         [0042]      FIG. 27  is an illustration of a cross-sectional view of the reflector of  FIG. 26 . 
         [0043]      FIG. 28  is a zonal rumination chart for the exemplary reflector of  FIG. 26  using a single 54 watt T5 linear fluorescent lamp rated at 4460 lumens. 
         [0044]      FIG. 29  is an illustration of a top view of a reflector for a luminaire according to another exemplary embodiment of the present invention. 
         [0045]      FIG. 30  is an illustration of a cross-sectional view of the reflector of  FIG. 29 . 
         [0046]      FIG. 31  is an illustration of a top view of a reflector for a luminaire according to another exemplary embodiment of the present invention. 
         [0047]      FIG. 32  is an illustration of a cross-sectional view of the reflector of  FIG. 31 . 
         [0048]      FIG. 33  is a zonal lumination chart for the exemplary reflector of  FIG. 31  using a single 54 watt T5 linear fluorescent lamp rated at 4460 lumens. 
         [0049]      FIG. 34  is an illustration of a top view of a reflector for a luminaire according to another exemplary embodiment of the present invention. 
         [0050]      FIG. 35  is an illustration of a cross-sectional view of the reflector of  FIG. 34 . 
         [0051]      FIG. 36  is an illustration of a top view of a reflector for a luminaire according to another exemplary embodiment of the present invention. 
         [0052]      FIG. 37  is an illustration of a cross-sectional view of the reflector of  FIG. 36 . 
     
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
       [0053]      FIG. 1  is an illustration of an isometric view of a reflector  10  for a luminaire according to an exemplary embodiment of the invention. In an exemplary embodiment, the reflector  10  may be used with a single fluorescent lamp, for example, a T8 lamp, to provide illumination in applications wherein a more focused light beam having greater intensity using lower wattage lamps is desired from a higher luminaire position. The reflector  10  has a long axis A traversing the center of the long side of the reflector  10 , and a short axis B traversing the center of the short side of the reflector  10 . In an exemplary embodiment, the reflector  10  is made of a reflective material such as specular aluminum. However, the reflector  10  may be formed from any material or combination of materials that provides a reflective surface on at least an inside portion of the reflector  10 . 
         [0054]    To form the reflector  10 , the reflective material is shaped around the long axis as will be described in further detail hereinafter. In the exemplary embodiment illustrated in  FIG. 1 , the reflector  10  is shaped to form a generally flat top portion  22 , which permits firm contact with a luminaire housing (not shown) and assists in enclosing wires within the luminaire housing. The reflector  10  has two sides  12  that extend from the top portion  22  of the reflector  10  in a curved manner. In addition to their curved shape, the sides  12  have multiple step-like features that traverse the length of the reflector  10 . The step-like features will be described in further detail hereinafter with respect to  FIG. 4 . 
         [0055]    The reflector  10  includes two socket notches  14  that allow for the installation of electrical sockets for the fluorescent lamp portion of the luminaire (not shown). The reflector  10  also includes two half-circle notches  16  on each end to assist in the installation of the reflector in a multi-strip configuration. The reflector  10  also includes two fastener holes  18  that permit the connection of the reflector  10  to the luminaire housing (not shown). 
         [0056]      FIG. 2  is an illustration of a top view of the exemplary reflector of  FIG. 1 . As illustrated in  FIG. 2 , the socket notches  14  are located at either end of the reflector  10  and are an appropriate length  14   a  and width  14   b  to accommodate the installation of a standard socket. In an exemplary embodiment, the notches can be 3.75 inches long and 0.625 inches wide, although the notches may be of any size or shape to accommodate a socket for a fluorescent lamp. The reflector  10  has a length  10   a . In an exemplary embodiment, the reflector  10  can be 48 inches long. 
         [0057]    The half-circle notches  16  are located in pairs at each end of the reflector  10 , have a diameter  16   a , and are located a distance  16   b  from the axial center of the reflector  10  to allow a power cable (not shown) to pass through the reflector  10  to a luminaire housing (not shown) in an embodiment wherein multiple reflectors  10  are connected to one another along their ends. In an exemplary embodiment, the half-circle notches  16  can be located 2.4 inches from the axial center of the reflector and are one-half inch in diameter. However, the half-circle notches  16  may be of any diameter  16   a  and disposed any distance  16   b  appropriate to fasten the reflector  10  to a luminaire housing (not shown). 
         [0058]    The fastener holes  18  are located along the axial center of the reflector  10  and are positioned to facilitate the connection of the reflector  10  to the luminaire housing (not shown). The fastener holes have a diameter  18   a  and are located a distance  18   b  from one another. In an exemplary embodiment, the fastener holes  18  can be approximately 0.41 inches in diameter. 
         [0059]    The distance  18   b  between the fastener holes  18  can vary depending on the size of the fluorescent lamp to be used in the light fixture. In one exemplary embodiment, the luminaire can be fitted with a forty-eight inch lamp, and the distance  18   b  between the fastener holes  18  can be 45.752 inches. However, depending on the size of fluorescent lamp and type of luminaire housing used, the fastener holes  18  may be of any suitable size and placed in any suitable location to facilitate the connection of the reflector  10  to the luminaire housing (not shown). 
         [0060]      FIG. 3  is an illustration of a cross-sectional view of the exemplary reflector of  FIG. 1 . As illustrated in  FIG. 3 , the reflector  10  has a flat portion  22  at the top and sides  12  that extend toward an opening  30  at the bottom of the reflector  10  that allows light to escape. The opening  30  has a width  30   a , which, in an exemplary embodiment, can be 7.983 inches wide. The flat portion  22  has a width  22   a . In an exemplary embodiment, the width of the flat portion  22  can be 2.788 inches. However, the flat portion may be of any suitable width that facilitates connection to such a housing, or may not be present at all. 
         [0061]    The sides  12  initially extend in a direction away from the opening  30  at an angle  32  with respect to the top portion  22 . In an exemplary embodiment the angle  32  can be forty-five degrees from horizontal, but may be any appropriate angle between zero and one hundred and eighty degrees. 
         [0062]    The sides  12  then slope toward the opening  30  at an angle  34  to the previously-described upward extending portion. Together, the angles  32  and  34  form a substantially V-shaped structure in the reflector  10  that improves the structural integrity of the reflector, and allows for easier handling of the reflector. The vertices of the respective V-shaped structures are a distance  34   a  apart. In an exemplary embodiment, the vertices of the V-shaped structures can be 3.208 inches apart. In an exemplary embodiment, the angle  34  can be one hundred and eight degrees but may be any appropriate angle. As described above with reference to  FIG. 1 , the sides  12  slope in a generally curved shape. The sides  12  terminate in a rim  36  a distance  36   a  from the flat portion. In an exemplary embodiment, the sides  12  can terminate approximately 1.997 inches below the flat portion  22 . 
         [0063]    The rim  36  can be used to support a diffuser or other luminaire accessory (not shown) and also may assist in the installation of the reflector  10  in a luminaire housing (not shown). The rim  36  extends at an angle  38  from each side  12  of the reflector  10 . In an exemplary embodiment, the rim  36  can extend at an angle  38  of ninety degrees from each side  12 . However, the angle  38  can be any angle suitable for supporting a diffuser or other attachment (not shown) that might be coupled to the reflector  10 , or for coupling the reflector  10  in a luminaire housing (not shown). The sides  12  terminate such that the vertex of the angle  38  is a vertical distance  36   b  from the vertex of the V-shaped structure formed by angle  34 , and such that the ends of the rims are a distance  36   c  apart. In an exemplary embodiment, the sides  12  can terminate 2.2 inches from the vertex of the V-shaped structure formed by angle  34 , and such that the rims  36  can terminate a distance 8.611 inches apart. The rims  36  themselves have a length  36   d . In an exemplary embodiment, the rims  36  can be 0.273 inches long. 
         [0064]      FIG. 4  is an illustration of another cross-sectional view of the exemplary reflector of  FIG. 1 . In particular,  FIG. 4  shows, in detail, step-like features  40  of each side  12 . The sides  12  of the reflector  10  proceed from the top portion  22  to the opening  30 . The steps  40  improve the light reflecting capabilities of the reflector  10 . In the exemplary embodiment illustrated in  FIG. 4 , the reflector has six steps  40 . 
         [0065]    The steps  40  can be manufactured in a variety of ways. In an exemplary embodiment, the reflector  10  comprises a single sheet of metal, and the steps  40  can be formed by bending the metal in appropriate locations at appropriate angles. In another exemplary embodiment, the steps  40  can be formed by assembling single strips of metal for each step  40 . In yet another exemplary embodiment, the steps can be formed by bending a single sheet of metal in a shape generally approximating the curved shape as described in  FIG. 4 . The steps  40  are then represented by substantially forming the shape of the curve to correspond with the dimensions of the steps, as will be described in further detail below. 
         [0066]    As shown in  FIG. 4 , each side  12  comprises six steps  40 . Dimensions of each step  40  according to an exemplary embodiment are listed below in Table 1. Starting from the vertex of angle  34  ( FIG. 3 ), the steps traverse toward the opening substantially as described in Table 1 below. 
         [0000]    
       
         
               
               
               
               
               
             
           
               
                   
                 TABLE 1 
               
               
                   
                   
               
               
                   
                   
                 Downward 
                 Horizontal 
                 Distance along 
               
               
                   
                 Step 
                 Distance (40a) 
                 Distance (40b) 
                 side (40c) 
               
               
                   
                   
               
             
             
               
                   
                 1 
                 .162 in 
                 .301 in 
                 .321 in 
               
               
                   
                 2 
                 .196 in 
                 .328 in 
                 .390 in 
               
               
                   
                 3 
                 .289 in 
                 .354 in 
                 .449 in 
               
               
                   
                 4 
                 .361 in 
                 .382 in 
                 .527 in 
               
               
                   
                 5 
                 .474 in 
                 .418 in 
                 .632 in 
               
               
                   
                 6 
                 .721 in 
                 .583 in 
                 .919 in 
               
               
                   
                   
               
             
          
         
       
     
         [0067]    While the dimensions of the stepped sides of the exemplary embodiment of the reflector are described above, other combinations of numbers and sizes of steps are contemplated by the present invention. Further, while the steps  40  of the present invention are described as part of the interior surface of the reflector  10 , the steps may also be present on the exterior of the reflector  10 , or the exterior of the reflector  10  may be smooth. 
         [0068]    Table 2 below provides light distribution data for a configuration of the reflector  10  in a luminaire using a single 32 watt T8 fluorescent lamp rated at 2850 lumens. Table 3 below provides zonal lumen data for this configuration of the reflector  10 , and Table 4 below provides the reflector&#39;s efficiency of producing light on a horizontal surface as determined by the zonal cavity method in this configuration. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 2 
               
             
             
               
                   
               
               
                 Candela distribution 
               
             
          
           
               
                   
                 0 
                 22.5 
                 45 
                 67.5 
                 90 
                 Flux 
               
               
                   
                   
               
             
          
           
               
                 0 
                 2263 
                 2263 
                 2263 
                 2263 
                 2263 
                   
               
               
                 5 
                 2259 
                 2258 
                 2255 
                 2227 
                 2223 
                 211 
               
               
                 15 
                 2169 
                 2120 
                 1895 
                 1729 
                 1691 
                 541 
               
               
                 25 
                 2006 
                 1768 
                 1501 
                 1397 
                 1356 
                 729 
               
               
                 35 
                 1765 
                 1390 
                 1186 
                 1166 
                 1139 
                 813 
               
               
                 45 
                 1468 
                 1071 
                 960 
                 1014 
                 1025 
                 832 
               
               
                 55 
                 1124 
                 759 
                 808 
                 874 
                 885 
                 769 
               
               
                 65 
                 719 
                 537 
                 615 
                 532 
                 514 
                 564 
               
               
                 75 
                 318 
                 329 
                 239 
                 181 
                 156 
                 262 
               
               
                 85 
                 40 
                 33 
                 0 
                 0 
                 0 
                 21 
               
               
                 90 
                 0 
                 0 
                 0 
                 0 
                 0 
                 0 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
             
           
               
                 TABLE 3 
               
             
             
               
                   
               
               
                 Zonal Lumen Summary 
               
             
          
           
               
                   
                 Zone 
                 Lumens 
                 % lamp 
                 % fixt 
               
               
                   
                   
               
             
          
           
               
                   
                 0-30 
                 1481 
                 26 
                 31.2 
               
               
                   
                 0-40 
                 2293 
                 40.2 
                 48.4 
               
               
                   
                 0-60 
                 3894 
                 68.3 
                 82.1 
               
               
                   
                 0-90 
                 4740 
                 83.2 
                 100 
               
               
                   
                 90-120 
                 0 
                 0 
                 0 
               
               
                   
                 90-130 
                 0 
                 0 
                 0 
               
               
                   
                 90-150 
                 0 
                 0 
                 0 
               
               
                   
                 90-180 
                 0 
                 0 
                 0 
               
               
                   
                  0-180 
                 4740 
                 83.2 
                 100 
               
               
                   
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 4 
               
             
             
               
                   
               
               
                 Zonal Cavity Method 
               
             
          
           
               
                   
                 RC 
               
             
          
           
               
                   
                 80 
                 70 
                 50 
                 30 
                 10 
                 0 
               
             
          
           
               
                 RW 
                 70 
                 50 
                 30 
                 10 
                 70 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 0 
               
               
                   
               
             
          
           
               
                 0 
                 99 
                 99 
                 99 
                 99 
                 97 
                 97 
                 97 
                 97 
                 92 
                 92 
                 92 
                 89 
                 89 
                 89 
                 85 
                 85 
                 85 
                 83 
               
               
                 1 
                 92 
                 88 
                 85 
                 83 
                 90 
                 87 
                 84 
                 81 
                 83 
                 81 
                 79 
                 80 
                 78 
                 76 
                 77 
                 76 
                 74 
                 72 
               
               
                 2 
                 84 
                 78 
                 73 
                 69 
                 82 
                 77 
                 72 
                 68 
                 74 
                 70 
                 67 
                 71 
                 68 
                 65 
                 69 
                 66 
                 64 
                 62 
               
               
                 3 
                 78 
                 70 
                 64 
                 59 
                 76 
                 69 
                 63 
                 58 
                 66 
                 61 
                 57 
                 64 
                 60 
                 56 
                 62 
                 58 
                 55 
                 54 
               
               
                 4 
                 71 
                 62 
                 56 
                 51 
                 70 
                 61 
                 55 
                 50 
                 59 
                 54 
                 50 
                 57 
                 53 
                 49 
                 56 
                 52 
                 48 
                 47 
               
               
                 5 
                 65 
                 55 
                 48 
                 43 
                 64 
                 54 
                 48 
                 43 
                 53 
                 47 
                 42 
                 51 
                 46 
                 42 
                 50 
                 45 
                 42 
                 40 
               
               
                 6 
                 60 
                 50 
                 43 
                 38 
                 59 
                 49 
                 42 
                 37 
                 48 
                 42 
                 37 
                 46 
                 41 
                 37 
                 45 
                 40 
                 36 
                 35 
               
               
                 7 
                 56 
                 45 
                 38 
                 33 
                 54 
                 44 
                 38 
                 33 
                 43 
                 37 
                 33 
                 42 
                 36 
                 32 
                 41 
                 36 
                 32 
                 31 
               
               
                 8 
                 52 
                 40 
                 34 
                 29 
                 50 
                 40 
                 33 
                 29 
                 39 
                 33 
                 29 
                 38 
                 22 
                 28 
                 37 
                 32 
                 28 
                 27 
               
               
                 9 
                 48 
                 36 
                 30 
                 25 
                 46 
                 36 
                 29 
                 25 
                 35 
                 29 
                 25 
                 34 
                 29 
                 25 
                 33 
                 28 
                 25 
                 23 
               
               
                 10 
                 44 
                 33 
                 27 
                 22 
                 43 
                 33 
                 27 
                 22 
                 32 
                 26 
                 22 
                 31 
                 26 
                 22 
                 31 
                 26 
                 22 
                 21 
               
               
                   
               
             
          
         
       
     
         [0069]      FIG. 5   a  is a zonal lumination plot for the exemplary reflector of  FIG. 1  using a single 32 watt T8 linear fluorescent lamp rated at 2850 lumens. 
         [0070]      FIG. 5   b  is a zonal rumination plot for the exemplary reflector of  FIG. 1  using two 32 watt T8 linear fluorescent lamps rated at 2850 lumens. 
         [0071]      FIG. 6  is an illustration of an isometric view of a reflector  60  for a luminaire according to another exemplary embodiment the invention. In an exemplary embodiment, the reflector  60  may be used with a single fluorescent lamp, such as a T8 lamp, wherein a balanced horizontal and vertical light distribution is desired, both directly below the luminaire, and in areas adjacent to the luminaire from a lower wattage lamp. In this embodiment, the reflector  60  has sides  62 , socket notches  64 , half-circle notches  66 , and fastener holes  68  that are substantially similar to those of the embodiment described above with respect to  FIGS. 1-4 . 
         [0072]      FIG. 7  illustrates a top view of the reflector  60  of  FIG. 6 . The socket notches  64  are located at either end of the reflector  60 , and are an appropriate length  64   a  and width  64   b  to accommodate the installation of a standard socket. In an exemplary embodiment, the notches can be 3.75 inches long and 0.625 inches wide, although the socket notches  64  may be of any suitable size or shape to accommodate a socket for a fluorescent lamp.  FIG. 7  also illustrates the rim  70  and flat portion  72 , which will be discussed in further detail below with respect to  FIG. 8 . The reflector  60  has a length  60   a . In an exemplary embodiment, the reflector  60  can be 48 inches long. 
         [0073]    The half-circle notches  66  are located in pairs at each end of the reflector and have a diameter  66   a  and are located a distance  66   b  from the axial center of the reflector  60  to allow a power cable (not shown) to pass through the reflector  60  to a luminaire housing (not shown) in an embodiment wherein multiple reflectors  60  are connected to one another along their ends. In an exemplary embodiment, the half-circle notches  66  can be located 2.4 inches from the axial center of the reflector and can be one-half inch in diameter. However, the half-circle notches  66  may be of any diameter  66   a  and in any distance  66   b  appropriate to fasten the reflector  60  to a luminaire housing (not shown) or another reflector. 
         [0074]    The fastener holes  68  are located along the axial center of the reflector  60  and are positioned in order to facilitate the connection of the reflector  60  to the luminaire housing (not shown). The fastener holes have a diameter  68   a  and are located a distance  68   b  from one another. in this embodiment, the fastener holes  68  can be approximately 0.41 inches in diameter. 
         [0075]    The distance  68   b  between the fastener holes  68  varies depending on the size of the fluorescent lamp to be used in the light fixture. In one exemplary embodiment, the luminaire can be fitted with a forty-eight inch lamp, and the distance  68   b  between the fastener holes  68  can be 45.752 inches. However, depending on the size of fluorescent lamp and type of luminaire housing used, the fastener holes may be of any size and placed in any location to facilitate the connection of the reflector  60  to the luminaire housing (not shown). 
         [0076]      FIGS. 8 and 9  are illustrations of cross-sectional views of the reflector  60  from a cutaway view. The reflector  60  has a rim  70 , flat portion  72 , and sides  62  opening downward toward an opening  82  that are substantially similar to the corresponding features as described above with respect to  FIGS. 3-4 . The flat portion  72  has a width  72   a , which in an exemplary embodiment can be 2.767 inches. A distinction between this embodiment and the embodiment described in  FIGS. 1-4  is the angle and size of the sides  62 , and the number and size of the steps  100 , which will be discussed in further detail with respect to  FIG. 10 , below. 
         [0077]    As illustrated in  FIG. 9 , the sides  62  initially extend in a direction away from the opening  82  at an angle  84  with respect to the top portion  72 . In an exemplary embodiment the angle  84  can be thirty degrees from horizontal, but may be any suitable angle between zero and one hundred and eighty degrees. 
         [0078]    The sides  62  then slope toward the opening  82  at an angle  86  to the previously-described upward extending portion. Together, the angles  84  and  86  form a substantially V-shaped structure in the reflector  60 . In an exemplary embodiment, the angle  84  can be thirty degrees from horizontal, and the angle  86  can be 124 degrees from the upward extending portion arising from the vertex of angle  84 . 
         [0079]    The sides  62  terminate at the rim  70  a vertical distance  70   a  from the vertex of angle  86 . In the exemplary embodiment, the sides  62  can terminate approximately 1.401 inches from the vertex of angle  86 . The vertices of the angles  86  are a distance  86   a  apart. In an exemplary embodiment, the vertices of angles  86  can be 3.395 inches apart. The rim  70  extends at an angle  88  that, in an exemplary embodiment, can be approximately seventy-five degrees from the terminus of the sides 62. The rims  70  terminate such that the ends of the rims  70  are a distance  70   b  apart. In an exemplary embodiment, the rims  70  can terminate 7.562 inches apart. The rims  70  also have a length  70   c . In an exemplary embodiment, the rims  70  can be 0.44 inches long. 
         [0080]    As illustrated in  FIGS. 8 and 10 , each side  62  of the reflector  60  in this embodiment comprises eight steps  100 . The steps may take a number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step are listed below in Table 5. 
         [0000]    
       
         
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                   
                 TABLE 5 
               
               
                   
                   
               
               
                   
                   
                 Downward 
                 Horizontal 
                 Distance along 
               
               
                   
                 Step 
                 Distance (100a) 
                 Distance (100b) 
                 side (100c) 
               
               
                   
                   
               
             
             
               
                   
               
             
          
           
               
                   
                 1 
                 .074 
                 in 
                 .151 in 
                 .172 in 
               
               
                   
                 2 
                 0.109 
                 in 
                 .196 in 
                 .226 in 
               
               
                   
                 3 
                 0.11 
                 in 
                 .201 in 
                 .241 in 
               
               
                   
                 4 
                 0.173 
                 in 
                 .208 in 
                 .259 in 
               
               
                   
                 5 
                 .179 
                 in 
                 .214 in 
                 .280 in 
               
               
                   
                 6 
                 .212 
                 in 
                 .213 in 
                 .302 in 
               
               
                   
                 7 
                 .231 
                 in 
                 .213 in 
                 .331 in 
               
               
                   
                 8 
                 .287 
                 in 
                 .167 in 
                 .372 in 
               
               
                   
                   
               
             
          
         
       
     
         [0081]    Table 6 below provides light distribution data for a configuration of the reflector  60  in a luminaire using a single 32 watt T8 fluorescent lamp rated at 2850 lumens. Table 7 below provides zonal lumen data for the configuration of the reflector  60 , and Table 8 below provides the reflector&#39;s efficiency of producing light on a horizontal surface as determined by the zonal cavity method. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 6 
               
             
             
               
                   
               
               
                 Candela distribution 
               
             
          
           
               
                   
                 0 
                 22.5 
                 45 
                 67.5 
                 90 
                 Flux 
               
               
                   
                   
               
             
          
           
               
                 0 
                 2063 
                 2063 
                 2063 
                 2063 
                 2063 
                   
               
               
                 5 
                 2046 
                 2046 
                 2042 
                 2029 
                 2027 
                 194 
               
               
                 15 
                 1971 
                 1955 
                 1963 
                 1870 
                 1828 
                 539 
               
               
                 25 
                 1822 
                 1812 
                 1551 
                 1400 
                 1386 
                 736 
               
               
                 35 
                 1605 
                 1475 
                 1221 
                 1124 
                 1132 
                 815 
               
               
                 45 
                 1335 
                 1066 
                 955 
                 1035 
                 1065 
                 824 
               
               
                 55 
                 1022 
                 764 
                 836 
                 932 
                 969 
                 788 
               
               
                 65 
                 684 
                 534 
                 694 
                 730 
                 725 
                 654 
               
               
                 75 
                 339 
                 367 
                 392 
                 391 
                 395 
                 401 
               
               
                 85 
                 51 
                 103 
                 115 
                 120 
                 123 
                 121 
               
               
                 90 
                 1 
                 18 
                 23 
                 28 
                 31 
               
               
                 95 
                 0 
                 5 
                 2 
                 1 
                 1 
                 4 
               
               
                 105 
                 0 
                 1 
                 0 
                 0 
                 0 
                 0 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
             
           
               
                 TABLE 7 
               
             
             
               
                   
               
               
                 Zonal Lumen Summary 
               
             
          
           
               
                   
                 Zone 
                 Lumens 
                 % lamp 
                 % fixt 
               
               
                   
                   
               
             
          
           
               
                   
                 0-30 
                 1469 
                 25.8 
                 28.9 
               
               
                   
                 0-40 
                 2284 
                 40.1 
                 45 
               
               
                   
                 0-60 
                 3896 
                 68.4 
                 76.7 
               
               
                   
                 0-90 
                 5073 
                 89 
                 99.9 
               
               
                   
                 90-120 
                 4 
                 0.1 
                 0.1 
               
               
                   
                 90-130 
                 4 
                 0.1 
                 0.1 
               
               
                   
                 90-150 
                 4 
                 0.1 
                 0.1 
               
               
                   
                 90-180 
                 4 
                 0.1 
                 0.1 
               
               
                   
                  0-180 
                 5077 
                 89.1 
                 100 
               
               
                   
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 8 
               
             
             
               
                   
               
               
                 Zonal Cavity Method 
               
             
          
           
               
                   
                 RC 
               
             
          
           
               
                   
                 80 
                 70 
                 50 
                 30 
                 10 
                 0 
               
             
          
           
               
                 RW 
                 70 
                 50 
                 30 
                 10 
                 70 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 0 
               
               
                   
               
             
          
           
               
                 0 
                 106 
                 106 
                 106 
                 106 
                 104 
                 104 
                 104 
                 104 
                 99 
                 99 
                 99 
                 95 
                 95 
                 95 
                 91 
                 91 
                 91 
                 89 
               
               
                 1 
                 97 
                 93 
                 90 
                 86 
                 95 
                 91 
                 88 
                 85 
                 87 
                 85 
                 82 
                 84 
                 82 
                 80 
                 81 
                 79 
                 77 
                 75 
               
               
                 2 
                 89 
                 82 
                 76 
                 71 
                 86 
                 80 
                 75 
                 70 
                 77 
                 72 
                 68 
                 74 
                 70 
                 67 
                 71 
                 68 
                 65 
                 63 
               
               
                 3 
                 81 
                 72 
                 65 
                 60 
                 79 
                 71 
                 65 
                 59 
                 68 
                 63 
                 58 
                 66 
                 61 
                 57 
                 64 
                 60 
                 56 
                 54 
               
               
                 4 
                 75 
                 64 
                 57 
                 51 
                 73 
                 63 
                 56 
                 51 
                 61 
                 55 
                 50 
                 59 
                 54 
                 49 
                 57 
                 52 
                 49 
                 47 
               
               
                 5 
                 68 
                 57 
                 49 
                 43 
                 66 
                 56 
                 49 
                 43 
                 54 
                 48 
                 43 
                 52 
                 47 
                 42 
                 51 
                 46 
                 42 
                 40 
               
               
                 6 
                 63 
                 51 
                 43 
                 38 
                 61 
                 50 
                 43 
                 37 
                 49 
                 42 
                 37 
                 47 
                 41 
                 37 
                 46 
                 41 
                 36 
                 35 
               
               
                 7 
                 58 
                 46 
                 38 
                 33 
                 57 
                 45 
                 38 
                 33 
                 44 
                 37 
                 33 
                 43 
                 37 
                 32 
                 42 
                 36 
                 32 
                 30 
               
               
                 8 
                 54 
                 42 
                 34 
                 29 
                 52 
                 41 
                 34 
                 29 
                 40 
                 33 
                 28 
                 39 
                 33 
                 28 
                 38 
                 32 
                 28 
                 26 
               
               
                 9 
                 50 
                 37 
                 30 
                 25 
                 48 
                 37 
                 30 
                 25 
                 36 
                 29 
                 25 
                 35 
                 29 
                 25 
                 34 
                 29 
                 25 
                 23 
               
               
                 10 
                 46 
                 34 
                 27 
                 22 
                 45 
                 34 
                 27 
                 22 
                 33 
                 26 
                 22 
                 32 
                 26 
                 22 
                 31 
                 26 
                 22 
                 20 
               
               
                   
               
             
          
         
       
     
         [0082]      FIG. 11   a  is a zonal rumination plot for the exemplary reflector of  FIG. 6  using a single 32 watt T8 linear fluorescent lamp rated at 2850 lumens. 
         [0083]      FIG. 11   b  is a zonal rumination plot for the exemplary reflector of  FIG. 6  using two 32 watt T8 linear fluorescent lamps, each rated at 2850 lumens. 
         [0084]      FIG. 12  is an illustration of an isometric view of a reflector for a luminaire according to another exemplary embodiment of the invention. In an exemplary embodiment, the reflector  120  may be used with a single fluorescent lamp wherein a light pattern having a wide distribution while directing moderate intensity light to the area below the luminaire using a lower wattage lamp. As illustrated in  FIG. 12 , the reflector  120  has sides  122 , socket notches  124 , half-circle notches  126 , and fastener holes  128  that are substantially similar to those of the embodiment described above with respect to  FIGS. 1-4 . The reflector itself has a length  120   a . In an exemplary embodiment, the reflector can be 48 inches long. 
         [0085]      FIG. 13  is an illustration of a top view of the exemplary reflector of  FIG. 12 . The socket notches  124  are located at either end of the reflector  120 , and are an appropriate length  124   a  and width  124   b  to accommodate the installation of a standard socket. In an exemplary embodiment, the socket notches  124  can be 3.75 inches long and 0.625 inches wide, although the socket notches  124  may be of any size or shape necessary to accommodate a socket for a fluorescent lamp. 
         [0086]    The half-circle notches  126  are located in pairs at each end of the reflector and have a diameter  126   a  and are located a distance  126   b  from the axial center of the reflector  120  to allow a power cable (not shown) to pass through the reflector  120  to a luminaire housing (not shown) in an embodiment wherein multiple reflectors  120  are connected to one another along their ends. In an exemplary embodiment, the half-circle notches  126  can be located 2.4 inches from the axial center of the reflector and can be one-half inch in diameter. However, the half-circle notches  126  may be of any diameter  126   a  and in any distance  126   b  from the center of the reflector  120  that is appropriate to fasten the reflector  120  to a luminaire housing (not shown). 
         [0087]    The fastener holes  128  are located along the axial center of the reflector  120  and are positioned in order to facilitate the connection of the reflector  120  to the luminaire housing (not shown). The fastener holes have a diameter  128   a  and are located a distance  128   b  from one another. In this embodiment, the fastener holes  128  can be approximately 0.41 inches in diameter. 
         [0088]    The distance  128   b  between the fastener holes  128  varies depending on the size of the fluorescent lamp to be used in the light fixture. In one exemplary embodiment, the luminaire can be fitted with a forty-eight inch lamp, and the distance between the fastener holes  128  can be 45.752 inches. However, depending on the size of fluorescent lamp and type of luminaire housing used, the fastener holes  128  may be of any size and placed in any location to facilitate the connection of the reflector  120  to the luminaire housing (not shown). 
         [0089]      FIG. 14  is an illustration of a cross-sectional view of the exemplary reflector  120  of  FIG. 12 . The reflector  120  has a rim  140 , flat portion  142  having a width  142   a , and sides  122  that are substantially similar to the corresponding features described above with respect to  FIGS. 3-4 . In this embodiment, the angle  144  can be thirty degrees from horizontal, and the angle  146  can be 121 degrees from the upward extending portion arising from the vertex of angle  148 . In this embodiment, the sides  122  terminate at the rim  140  a vertical distance  140   a  from the vertex of angle  146 . In the exemplary embodiment, the sides  144  can terminate approximately 1.373 inches from the vertex of angle  146 . The rim  140  extends at an angle  148  that can be approximately seventy-five degrees from the terminus of the sides  122 . The rim  140  has a length  140   c  such that the rims  140  terminate a distance  140   b  from one another. In an exemplary embodiment, the rims  140  can be 0.414 inches long and can terminate 7.103 inches apart. 
         [0090]    As shown in  FIG. 15 , each side  122  of this embodiment comprises eight steps  150 . The steps may take any number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step are listed below in Table 9. 
         [0000]    
       
         
               
               
               
               
             
               
               
               
               
               
             
           
               
                 TABLE 9 
               
               
                   
               
               
                   
                   
                 Horizontal 
                 Distance along 
               
               
                 Step 
                 Downward Distance (150a) 
                 Distance (150b) 
                 side (150c) 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 .074 
                 in 
                 .151 in 
                 .172 in 
               
               
                 2 
                 0.109 
                 in 
                 .196 in 
                 .226 in 
               
               
                 3 
                 0.11 
                 in 
                 .201 in 
                 .241 in 
               
               
                 4 
                 0.173 
                 in 
                 .208 in 
                 .259 in 
               
               
                 5 
                 .179 
                 in 
                 .214 in 
                 .280 in 
               
               
                 6 
                 .212 
                 in 
                 .213 in 
                 .302 in 
               
               
                 7 
                 .231 
                 in 
                 .213 in 
                 .331 in 
               
               
                 8 
                 .287 
                 in 
                 .167 in 
                 .372 in 
               
               
                   
               
             
          
         
       
     
         [0091]    Table 10 below provides light distribution data for a configuration of the reflector  120  in a luminaire using a single 32 watt T8 fluorescent lamp rated at 2850 lumens. Table 11 below provides zonal lumen data for the configurations of the reflector  120 , and Table 12 below provides the reflector&#39;s  120  efficiency of producing light on a horizontal surface as determined by the zonal cavity method. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 10 
               
             
             
               
                   
               
               
                 Candela distribution 
               
             
          
           
               
                   
                 0 
                 22.5 
                 45 
                 67.5 
                 90 
                 Flux 
               
               
                   
                   
               
             
          
           
               
                 0 
                 889 
                 889 
                 889 
                 889 
                 889 
                   
               
               
                 5 
                 900 
                 896 
                 934 
                 956 
                 963 
                 90 
               
               
                 15 
                 869 
                 950 
                 1008 
                 944 
                 921 
                 267 
               
               
                 25 
                 809 
                 932 
                 803 
                 710 
                 687 
                 366 
               
               
                 35 
                 719 
                 744 
                 589 
                 600 
                 628 
                 411 
               
               
                 45 
                 605 
                 541 
                 535 
                 627 
                 645 
                 449 
               
               
                 55 
                 470 
                 365 
                 504 
                 548 
                 560 
                 432 
               
               
                 65 
                 316 
                 311 
                 384 
                 353 
                 343 
                 342 
               
               
                 75 
                 154 
                 204 
                 223 
                 277 
                 280 
                 238 
               
               
                 85 
                 19 
                 74 
                 89 
                 95 
                 98 
                 87 
               
               
                 90 
                 2 
                 11 
                 11 
                 13 
                 14 
               
               
                 95 
                 0 
                 5 
                 0 
                 0 
                 0 
                 1 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
             
           
               
                 TABLE 11 
               
             
             
               
                   
               
               
                 Zonal Lumen Summary 
               
             
          
           
               
                   
                 Zone 
                 Lumens 
                 % lamp 
                 % fixt 
               
               
                   
                   
               
             
          
           
               
                   
                 0-30 
                 723 
                 25.4 
                 26.9 
               
               
                   
                 0-40 
                 1134 
                 39.8 
                 42.3 
               
               
                   
                 0-60 
                 2015 
                 70.7 
                 75.1 
               
               
                   
                 0-90 
                 2682 
                 94.1 
                 99.9 
               
               
                   
                 90-120 
                 2 
                 0.1 
                 0.1 
               
               
                   
                 90-130 
                 2 
                 0.1 
                 0.1 
               
               
                   
                 90-150 
                 2 
                 0.1 
                 0.1 
               
               
                   
                 90-180 
                 2 
                 0.1 
                 0.1 
               
               
                   
                  0-180 
                 2684 
                 94.2 
                 100 
               
               
                   
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 12 
               
             
             
               
                   
               
               
                 Zonal Cavity Method 
               
             
          
           
               
                   
                 RC 
               
             
          
           
               
                   
                 80 
                 70 
                 50 
                 30 
                 10 
                 0 
               
             
          
           
               
                 RW 
                 70 
                 50 
                 30 
                 10 
                 70 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 0 
               
               
                   
               
             
          
           
               
                 0 
                 112 
                 112 
                 112 
                 112 
                 109 
                 109 
                 109 
                 109 
                 105 
                 105 
                 105 
                 100 
                 100 
                 100 
                 96 
                 96 
                 96 
                 94 
               
               
                 1 
                 102 
                 98 
                 94 
                 90 
                 100 
                 96 
                 92 
                 89 
                 92 
                 89 
                 86 
                 88 
                 85 
                 83 
                 85 
                 83 
                 81 
                 79 
               
               
                 2 
                 93 
                 85 
                 79 
                 73 
                 91 
                 84 
                 78 
                 73 
                 80 
                 75 
                 71 
                 77 
                 73 
                 69 
                 74 
                 71 
                 68 
                 66 
               
               
                 3 
                 85 
                 75 
                 68 
                 62 
                 83 
                 74 
                 67 
                 61 
                 71 
                 65 
                 60 
                 68 
                 63 
                 59 
                 66 
                 62 
                 58 
                 56 
               
               
                 4 
                 78 
                 67 
                 59 
                 52 
                 76 
                 66 
                 58 
                 52 
                 63 
                 57 
                 51 
                 61 
                 55 
                 51 
                 59 
                 54 
                 50 
                 48 
               
               
                 5 
                 71 
                 59 
                 50 
                 44 
                 69 
                 58 
                 50 
                 44 
                 56 
                 49 
                 43 
                 54 
                 48 
                 43 
                 52 
                 47 
                 42 
                 40 
               
               
                 6 
                 66 
                 53 
                 44 
                 38 
                 64 
                 52 
                 44 
                 38 
                 50 
                 43 
                 38 
                 49 
                 42 
                 37 
                 47 
                 41 
                 37 
                 35 
               
               
                 7 
                 60 
                 48 
                 39 
                 33 
                 59 
                 47 
                 39 
                 33 
                 45 
                 38 
                 33 
                 44 
                 37 
                 33 
                 43 
                 37 
                 32 
                 30 
               
               
                 8 
                 56 
                 43 
                 35 
                 29 
                 54 
                 42 
                 34 
                 29 
                 41 
                 34 
                 29 
                 40 
                 33 
                 28 
                 38 
                 33 
                 28 
                 26 
               
               
                 9 
                 51 
                 38 
                 30 
                 25 
                 50 
                 38 
                 30 
                 25 
                 37 
                 30 
                 25 
                 36 
                 29 
                 25 
                 35 
                 29 
                 25 
                 23 
               
               
                 10 
                 48 
                 35 
                 27 
                 22 
                 47 
                 34 
                 27 
                 22 
                 33 
                 27 
                 22 
                 33 
                 26 
                 22 
                 32 
                 26 
                 22 
                 20 
               
               
                   
               
             
          
         
       
     
         [0092]      FIG. 16   a  is a zonal rumination plot for the exemplary reflector of  FIG. 12  using a single 32 watt T8 linear fluorescent lamp rated at 2850 lumens. 
         [0093]      FIG. 16   b  is a zonal rumination plot for the exemplary reflector of  FIG. 12  using two 32 watt T8 linear fluorescent lamps, each rated at 2850 lumens. 
         [0094]      FIG. 17  is an illustration of an isometric view of a reflector  170  for a luminaire according to another exemplary embodiment the invention. As illustrated in  FIG. 17 , the reflector  170  of this embodiment differs from the embodiments described in  FIGS. 1-16  in that this embodiment is designed for a luminaire that uses a T5-type fluorescent lamp, which is smaller than the T8 and T12-type fluorescent lamps that are more commonly used in industrial lighting applications. Nonetheless, the reflector  170  is designed such that it can be accommodated by a standard luminaire housing. In this embodiment, the reflector  170  has sides  172  and socket notches  174 . The sides  172  extend generally downward from the top of the reflector  170  in a parabolic manner. 
         [0095]      FIG. 18  is an illustration of a top view of the exemplary reflector  170  of  FIG. 17 . As  FIG. 18  illustrates, this embodiment has two large fastener holes  180  and two small fastener holes  182  disposed on a flat portion  184 . This view also shows that the socket notches  174  are in a different configuration from the socket notches of the reflectors described above. Each socket notch  174  is a rectangular opening in the reflector of a height  174   a  and a width  174   b . In an exemplary embodiment, the socket notches  174  can be approximately 2.6 inches long and 0.75 inches wide. In the exemplary embodiment, each socket notch  174  is located a distance  174   c  from the respective ends of the reflector  170 . In the exemplary embodiment, each socket notch  174  can be disposed approximately 0.884 inches away from each end of the reflector  170 . However, the socket notches  174  can be any shape or size appropriate to accommodate a socket for a fluorescent lamp. The reflector itself has a length  170   a  and a width  170   b  which, in an exemplary embodiment, can be 48 inches and 4.305 inches, respectively. 
         [0096]    In the exemplary embodiment, the large fastener holes  180  have a diameter  180   a  and are centered a distance  180   b  from the end of the reflector  170 . In the exemplary embodiment, the large fastener holes  180  can be approximately 0.408 inches in diameter, and can be located substantially along the center of the reflector  170 , centered approximately 2.223 inches from each end. The small fastener holes  182  have a diameter  182   a  and are centered a distance  182   b  from the end of the reflector  170 . In an exemplary embodiment, the small fastener holes  182  can be approximately 0.15 inches in diameter, and can be located essentially along the center of the reflector  170 , centered approximately five inches from each end. However, the large and small fastener holes  180  and  182  can be in any size and any configuration appropriate to facilitate connection to a luminaire housing. 
         [0097]      FIG. 19  is an illustration of a side view of the exemplary reflector  170  of  FIG. 17 . As  FIG. 19  illustrates, the reflector  170  has a height  170   c . In the exemplary embodiment, the reflector  170  can have a height of approximately 1.288 inches.  FIG. 19  further illustrates the configuration of the socket notches  174  with respect to the curvature of the reflector  170 . 
         [0098]      FIGS. 20 and 21  illustrate cross-sectional views of the exemplary reflector  170  of  FIG. 17 . The reflector  170  has sides  172  that extend downward in a substantially parabolic fashion. The reflector  170  has a rim  200  and sides  172  that are substantially similar to the corresponding features described above with respect to  FIGS. 3-4 . A notable difference between the present embodiment and the embodiments previously described, as can be seen particularly with respect to  FIGS. 20 and 21 , is the smaller size of the flat portion  184  at the top of the reflector  170  and the absence of a V-shaped structure between the top portion and the sides. 
         [0099]    The rim  200  extends at an angle  202  that can be approximately ninety degrees from the terminus of the sides  172 . As shown in  FIG. 21 , each side of this embodiment comprises nine steps  210 . The steps may take any number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step in the exemplary embodiment are listed below in table 13. 
         [0000]    
       
         
               
               
               
               
             
               
               
               
               
             
           
               
                 TABLE 13 
               
               
                   
               
               
                   
                   
                 Horizontal 
                 Angle from 
               
               
                 Step 
                 Downward Distance (210a) 
                 Distance (210b) 
                 prior step (210c) 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 0.034 
                 0.1 
                 172° 
               
               
                 2 
                 0.034 
                 0.149 
                 175° 
               
               
                 3 
                 0.052 
                 0.157 
                 175° 
               
               
                 4 
                 0.073 
                 0.169 
                 175° 
               
               
                 5 
                 0.101 
                 0.184 
                 175° 
               
               
                 6 
                 0.138 
                 0.206 
                 175° 
               
               
                 7 
                 0.191 
                 0.235 
                 175° 
               
               
                 8 
                 0.271 
                 0.277 
                 175° 
               
               
                 9 
                 0.394 
                 0.336 
                 175° 
               
               
                   
               
             
          
         
       
     
         [0100]    Table 14 below provides light distribution data for a configuration of the reflector  170  in a luminaire using a single 54 watt T5 fluorescent lamp rated at 4400 lumens. Table 15 below provides zonal lumen data for this configuration of the reflector  170 , and Table 16 below provides the reflector&#39;s efficiency of producing light on a horizontal surface as determined by the zonal cavity method. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 14 
               
             
             
               
                   
               
               
                 Candela distribution 
               
             
          
           
               
                   
                 0 
                 22.5 
                 45 
                 67.5 
                 90 
                 Flux 
               
               
                   
                   
               
             
          
           
               
                 0 
                 2638 
                 2638 
                 2638 
                 2638 
                 2638 
                   
               
               
                 5 
                 2593 
                 2586 
                 2520 
                 2446 
                 2427 
                 235 
               
               
                 15 
                 2496 
                 2286 
                 2133 
                 2001 
                 1950 
                 605 
               
               
                 25 
                 2307 
                 1964 
                 1564 
                 1102 
                 962 
                 718 
               
               
                 35 
                 2021 
                 1540 
                 738 
                 573 
                 562 
                 652 
               
               
                 45 
                 164 
                 901 
                 464 
                 497 
                 521 
                 574 
               
               
                 55 
                 1261 
                 386 
                 407 
                 491 
                 524 
                 489 
               
               
                 65 
                 819 
                 243 
                 383 
                 487 
                 529 
                 445 
               
               
                 75 
                 393 
                 187 
                 363 
                 487 
                 532 
                 390 
               
               
                 85 
                 42 
                 131 
                 181 
                 209 
                 217 
                 176 
               
               
                 90 
                 0 
                 16 
                 38 
                 57 
                 61 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
             
           
               
                 TABLE 15 
               
             
             
               
                   
               
               
                 Zonal Lumen Summary 
               
             
          
           
               
                   
                 Zone 
                 Lumens 
                 % lamp 
                 % fixt 
               
               
                   
                   
               
             
          
           
               
                   
                 0-30 
                 1558 
                 35.4 
                 36.4 
               
               
                   
                 0-40 
                 2209 
                 50.2 
                 51.6 
               
               
                   
                 0-60 
                 3272 
                 74.4 
                 76.4 
               
               
                   
                 0-90 
                 4283 
                 97.3 
                 100 
               
               
                   
                 90-120 
                 0 
                 0 
                 0 
               
               
                   
                 90-130 
                 0 
                 0 
                 0 
               
               
                   
                 90-150 
                 0 
                 0 
                 0 
               
               
                   
                 90-180 
                 0 
                 0 
                 0 
               
               
                   
                  0-180 
                 4283 
                 97.3 
                 100 
               
               
                   
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 16 
               
             
             
               
                   
               
               
                 Zonal Cavity Method 
               
             
          
           
               
                   
                 RC 
               
             
          
           
               
                   
                 80 
                 70 
                 50 
                 30 
                 10 
                 0 
               
             
          
           
               
                 RW 
                 70 
                 50 
                 30 
                 10 
                 70 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 0 
               
               
                   
               
             
          
           
               
                 0 
                 116 
                 116 
                 116 
                 116 
                 113 
                 113 
                 113 
                 113 
                 108 
                 108 
                 108 
                 104 
                 104 
                 104 
                 99 
                 99 
                 99 
                 97 
               
               
                 1 
                 106 
                 102 
                 97 
                 94 
                 103 
                 99 
                 96 
                 92 
                 95 
                 92 
                 89 
                 91 
                 89 
                 87 
                 88 
                 86 
                 84 
                 82 
               
               
                 2 
                 97 
                 89 
                 83 
                 78 
                 95 
                 88 
                 82 
                 77 
                 84 
                 79 
                 75 
                 81 
                 77 
                 73 
                 78 
                 75 
                 72 
                 70 
               
               
                 3 
                 90 
                 80 
                 73 
                 67 
                 87 
                 78 
                 72 
                 66 
                 76 
                 70 
                 65 
                 73 
                 68 
                 64 
                 71 
                 66 
                 63 
                 61 
               
               
                 4 
                 83 
                 72 
                 64 
                 58 
                 81 
                 71 
                 63 
                 57 
                 68 
                 62 
                 57 
                 66 
                 60 
                 56 
                 64 
                 59 
                 55 
                 53 
               
               
                 5 
                 76 
                 65 
                 56 
                 50 
                 74 
                 64 
                 56 
                 50 
                 62 
                 55 
                 49 
                 60 
                 54 
                 49 
                 58 
                 53 
                 48 
                 46 
               
               
                 6 
                 71 
                 59 
                 51 
                 45 
                 69 
                 58 
                 50 
                 45 
                 56 
                 49 
                 44 
                 55 
                 49 
                 44 
                 53 
                 48 
                 43 
                 42 
               
               
                 7 
                 66 
                 54 
                 46 
                 40 
                 65 
                 53 
                 45 
                 40 
                 52 
                 45 
                 40 
                 50 
                 44 
                 39 
                 49 
                 43 
                 39 
                 37 
               
               
                 8 
                 62 
                 49 
                 41 
                 36 
                 60 
                 48 
                 41 
                 36 
                 47 
                 40 
                 35 
                 46 
                 40 
                 35 
                 45 
                 39 
                 35 
                 33 
               
               
                 9 
                 57 
                 45 
                 37 
                 32 
                 56 
                 44 
                 37 
                 32 
                 43 
                 36 
                 32 
                 42 
                 36 
                 31 
                 41 
                 35 
                 31 
                 30 
               
               
                 10 
                 54 
                 41 
                 34 
                 29 
                 53 
                 41 
                 34 
                 29 
                 40 
                 33 
                 29 
                 39 
                 33 
                 29 
                 38 
                 32 
                 28 
                 27 
               
               
                   
               
             
          
         
       
     
         [0101]      FIG. 22   a  is a zonal lumination plot for the exemplary reflector of  FIG. 17  using a single 54 watt T5 linear fluorescent lamp rated at 4400 lumens. 
         [0102]      FIG. 22   b  is a zonal rumination plot for the exemplary reflector of  FIG. 17  using two 54 watt T5 linear fluorescent lamps spaced 1.062 inches from the top of the reflector  170 , each rated at 4400 lumens. 
         [0103]      FIG. 22   c  is a zonal lumination plot for the exemplary reflector of  FIG. 17  using two 54 watt T5 linear fluorescent lamps spaced 0.875 inches from the top of the reflector  170 , each rated at 4400 lumens. 
         [0104]      FIG. 23  is an isometric view of a reflector  230  for a luminaire according to another exemplary embodiment the invention. In an exemplary embodiment, the reflector  230  may use a single fluorescent lamp, such as a T8 lamp, to provide a more focused beam of light from a higher luminaire installation using lower wattage lamps. As illustrated in  FIG. 23 , the reflector  230  of this embodiment is similar to the reflector of the embodiment described in  FIGS. 17-21 . In this embodiment, however, the reflector is designed to house a T8 style fluorescent lamp. 
         [0105]    The reflector  230  has sides  232  and socket notches  234 . The socket notches  234  are similarly configured to the socket notches of the embodiment described in  FIG. 1 , and are operative to allow for the installation of electrical sockets for the fluorescent lamp portion within the reflector  230 . The sides  232  extend generally downward in a parabolic manner from a top portion  238 . The reflector  230  also has two fastener holes  236  in the top portion  238  that are used to attach the reflector  230  to a luminaire housing (not shown). 
         [0106]      FIG. 24  is an illustration of a cross-sectional view of the exemplary reflector  230  of  FIG. 23 . As shown in  FIG. 24 , the reflector  230  has a rim  240  and sides  232  that are substantially similar to the corresponding features described above with respect to  FIGS. 17-21 . Each side  232  extends downward from the top portion  238 . The top portion has a width  238   a . In an exemplary embodiment, the top portion is  238  can be 0.676 inches wide. In this embodiment, the sides  232  terminate at the rim  240  a vertical distance  240   a  from the top of the reflector  230  and form an opening  246  having a width  2460   a . In an exemplary embodiment, the sides  232  can terminate approximately 3.706 inches below the top of the reflector  230  and form an opening  246  that can be 8.204 inches wide. The rim  240  extends at an angle  242  that, in an exemplary embodiment, is approximately ninety degrees from the terminus of the sides  112 . The rim  240  has a length  240   b , which in an exemplary embodiment can be 0.404 inches long. The rims  240  terminate a distance  240   c  apart, which in an exemplary embodiment can be 8.972 inches. 
         [0107]    As shown in  FIG. 24 , each side of this embodiment comprises five steps. The steps may take any number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step are listed below in Table 17. 
         [0000]    
       
         
               
               
               
             
           
               
                 TABLE 17 
               
               
                   
               
               
                 Step 
                 Distance along side (244a) 
                 Angle from prior step (244b) 
               
               
                   
               
             
             
               
                 1 
                 0.779 in 
                 197.5° 
               
               
                 2 
                 0.915 in 
                 195.5° 
               
               
                 3 
                 0.283 in 
                 191.6° 
               
               
                 4 
                 1.221 in 
                 188.2° 
               
               
                 5 
                 1.392 in 
                 185.9° 
               
               
                   
               
             
          
         
       
     
         [0108]    Table 18 below provides light distribution data for a configuration of the reflector  230  in a luminaire using a single 32 watt T8 fluorescent lamp rated at 2850 lumens. Table 19 below provides zonal lumen data for this configuration of the reflector  230 , and Table 20 below provides the reflector&#39;s  230  efficiency of producing light on a horizontal surface as determined by the zonal cavity method. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 18 
               
             
             
               
                   
               
               
                 Candela distribution 
               
             
          
           
               
                   
                 0 
                 22.5 
                 45 
                 67.5 
                 90 
                 Flux 
               
               
                   
                   
               
             
          
           
               
                 0 
                 3174 
                 3174 
                 3174 
                 3174 
                 3174 
                   
               
               
                 5 
                 3139 
                 3197 
                 3265 
                 3281 
                 3300 
                 309 
               
               
                 15 
                 3017 
                 3197 
                 2954 
                 2394 
                 2182 
                 774 
               
               
                 25 
                 2795 
                 2765 
                 1572 
                 1212 
                 1108 
                 864 
               
               
                 35 
                 2449 
                 1731 
                 922 
                 671 
                 614 
                 761 
               
               
                 45 
                 2027 
                 986 
                 514 
                 474 
                 495 
                 628 
               
               
                 55 
                 1529 
                 512 
                 392 
                 438 
                 400 
                 505 
               
               
                 65 
                 984 
                 242 
                 208 
                 0 
                 0 
                 237 
               
               
                 75 
                 470 
                 133 
                 0 
                 0 
                 0 
                 93 
               
               
                 85 
                 51 
                 4 
                 0 
                 0 
                 0 
                 12 
               
               
                 90 
                 4 
                 7 
                 0 
                 0 
                 0 
                 0 
               
               
                 95 
                 1 
                 4 
                 0 
                 0 
                 0 
                 1 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
             
           
               
                 TABLE 19 
               
             
             
               
                   
               
               
                 Zonal Lumen Summary 
               
             
          
           
               
                   
                 Zone 
                 Lumens 
                 % lamp 
                 % fixt 
               
               
                   
                   
               
             
          
           
               
                   
                 0-30 
                 1948 
                 44.3 
                 46.5 
               
               
                   
                 0-40 
                 2708 
                 61.6 
                 64.7 
               
               
                   
                 0-60 
                 3841 
                 87.3 
                 91.8 
               
               
                   
                 0-90 
                 4183 
                 95.1 
                 99.9 
               
               
                   
                 90-120 
                 2 
                 0.1 
                 0.1 
               
               
                   
                 90-130 
                 2 
                 0.1 
                 0.1 
               
               
                   
                 90-150 
                 2 
                 0.1 
                 0.1 
               
               
                   
                 90-180 
                 2 
                 0.1 
                 0.1 
               
               
                   
                  0-180 
                 4186 
                 95.1 
                 100 
               
               
                   
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 20 
               
             
             
               
                   
               
               
                 Zonal Cavity Method 
               
             
          
           
               
                   
                 RC 
               
             
          
           
               
                   
                 80 
                 70 
                 50 
                 30 
                 10 
                 0 
               
             
          
           
               
                 RW 
                 70 
                 50 
                 30 
                 10 
                 70 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 0 
               
               
                   
               
             
          
           
               
                 0 
                 113 
                 113 
                 113 
                 113 
                 111 
                 111 
                 111 
                 111 
                 106 
                 106 
                 106 
                 101 
                 101 
                 101 
                 97 
                 97 
                 97 
                 95 
               
               
                 1 
                 107 
                 103 
                 100 
                 98 
                 104 
                 101 
                 99 
                 96 
                 97 
                 95 
                 93 
                 94 
                 92 
                 90 
                 90 
                 89 
                 88 
                 86 
               
               
                 2 
                 100 
                 94 
                 89 
                 85 
                 97 
                 92 
                 88 
                 84 
                 89 
                 85 
                 82 
                 86 
                 83 
                 80 
                 83 
                 81 
                 79 
                 77 
               
               
                 3 
                 93 
                 86 
                 80 
                 75 
                 91 
                 84 
                 79 
                 75 
                 82 
                 77 
                 73 
                 79 
                 75 
                 72 
                 77 
                 74 
                 71 
                 69 
               
               
                 4 
                 87 
                 78 
                 72 
                 67 
                 85 
                 77 
                 71 
                 66 
                 75 
                 70 
                 65 
                 73 
                 68 
                 65 
                 71 
                 67 
                 64 
                 62 
               
               
                 5 
                 81 
                 71 
                 64 
                 59 
                 79 
                 70 
                 64 
                 59 
                 68 
                 63 
                 58 
                 67 
                 62 
                 58 
                 65 
                 61 
                 57 
                 55 
               
               
                 6 
                 76 
                 65 
                 58 
                 53 
                 74 
                 64 
                 58 
                 53 
                 63 
                 57 
                 53 
                 61 
                 56 
                 52 
                 60 
                 55 
                 52 
                 50 
               
               
                 7 
                 71 
                 60 
                 53 
                 48 
                 69 
                 59 
                 53 
                 48 
                 58 
                 52 
                 48 
                 57 
                 51 
                 47 
                 55 
                 51 
                 47 
                 45 
               
               
                 8 
                 66 
                 55 
                 48 
                 43 
                 65 
                 54 
                 48 
                 43 
                 53 
                 47 
                 43 
                 52 
                 47 
                 43 
                 51 
                 46 
                 42 
                 41 
               
               
                 9 
                 61 
                 50 
                 43 
                 39 
                 60 
                 50 
                 43 
                 39 
                 49 
                 43 
                 38 
                 48 
                 42 
                 38 
                 47 
                 72 
                 38 
                 37 
               
               
                 10 
                 58 
                 46 
                 43 
                 35 
                 56 
                 46 
                 39 
                 35 
                 45 
                 39 
                 35 
                 44 
                 39 
                 35 
                 43 
                 38 
                 35 
                 33 
               
               
                   
               
             
          
         
       
     
         [0109]      FIG. 25   a  is a zonal lumination plot for the exemplary reflector of  FIG. 23  using a single 32 watt T8 linear fluorescent lamp rated at 2850 lumens. 
         [0110]      FIG. 25   b  is a zonal lamination plot for the exemplary reflector of  FIG. 23  using two 32 watt T8 fluorescent lamps. 
         [0111]      FIG. 26  is an illustration of a top view of a reflector  260  for a luminaire according to another exemplary embodiment of the present invention. As illustrated in  FIG. 26 , the reflector  260  has sides  262 , socket notches  264 , half-circle notches  266 , and fastener holes  268  that are substantially similar to those of the embodiment described above with respect to  FIGS. 1-4 . The reflector itself has a length  260   a . In an exemplary embodiment, the reflector  260  can be 48 inches long. 
         [0112]    The socket notches  264  are located at either end of the reflector  260 , and are an appropriate length  264   a  and width  264   b  to accommodate the installation of a standard socket. In an exemplary embodiment, the socket notches  264  can be 1.5 inches wide and 1.6 inches long, although the socket notches  264  may be of any size or shape necessary to accommodate a socket for a fluorescent lamp. 
         [0113]    The half-circle notches  266  are located in pairs at each end of the reflector  260  and are configured to allow a power cable (not shown) to pass through the reflector  260  to a luminaire housing (not shown) in an embodiment wherein multiple reflectors  266  are connected to one another along their ends. The half-circle notches  266  may be of any diameter and in any distance from the center of the reflector  260  that is appropriate to fasten the reflector  260  to a luminaire housing (not shown). 
         [0114]    The fastener holes  268  are located along the axial center of the reflector  260  and are positioned in order to facilitate the connection of the reflector  260  to the luminaire housing (not shown). The fastener holes are located a distance  268   a  on either side of the center of the reflector  260 . In this embodiment, the fastener holes  268  can be approximately 21.78 inches from the center of the reflector  260 . However, the distance  268   a  between the fastener holes  268  and the center of the reflector  260  varies depending on the size of the fluorescent lamp to be used in the light fixture. Depending on the size of fluorescent lamp and type of luminaire housing used, the fastener holes  268  may be of any appropriate size and placed in any appropriate location to facilitate the connection of the reflector  260  to the luminaire housing (not shown). 
         [0115]    The reflector  260  also has secondary fastener holes  270  that may assist in coupling the reflector to the luminaire housing (not shown). The secondary fastener holes  270  have a diameter  270   a  and are disposed a distance  270   b  from the center of the reflector  260 . In an exemplary embodiment, the secondary fastener holes  270  may be disposed 20.26 inches from the center of the reflector  260 , and may be 0.19 inches in diameter, although the dimensions and locations of the secondary fastener holes can be of any size appropriate to fasten the reflector to a luminaire housing. 
         [0116]      FIG. 27  is an illustration of a cross-sectional view of the exemplary reflector  230  of  FIG. 26 . As shown in  FIG. 27 , the reflector  260  has a rim  276  and sides  262  that are substantially similar to the corresponding features described above with respect to  FIG. 24 . Each side  262  extends downward from the top portion  272 . The top portion has a width  272   a . In an exemplary embodiment, the top portion  272  can be 0.688 inches wide. In this embodiment, the sides  2262  terminate at the rim  276  and form an opening  278 . The rim  276  extends at an angle  278  that, in an exemplary embodiment, is approximately ninety degrees from the terminus of the sides  262 . The rims  276  have a length  276   a , which in an exemplary embodiment can be 0.375 inches long. 
         [0117]    As shown in  FIG. 27 , each side of this embodiment comprises five steps. The steps may take any number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step are listed below in Table 21. 
         [0000]    
       
         
               
               
               
             
               
               
               
             
           
               
                 TABLE 21 
               
               
                   
               
               
                 Step 
                 Distance Along Side (274) 
                 Angle from Prior Step (274a) 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 0.79 
                 160.45° 
               
               
                 2 
                 0.924 
                 158.48° 
               
               
                 3 
                 1.073 
                 165.41° 
               
               
                 4 
                 1.102 
                 170.84° 
               
               
                 5 
                 1.167 
                 174.09° 
               
               
                   
               
             
          
         
       
     
         [0118]    Table 21a below provides light distribution data for a configuration of the reflector  260  in a luminaire using a single 54 watt T5 fluorescent lamp rated at 4460 lumens. Table 21b below provides zonal lumen data for this configuration of the reflector  260 , and Table 21c below provides the reflector&#39;s  260  efficiency of producing light on a horizontal surface as determined by the zonal cavity method. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 21a 
               
             
             
               
                   
               
               
                 Candela distribution 
               
             
          
           
               
                   
                 0 
                 22.5 
                 45 
                 67.5 
                 90 
               
               
                   
                   
               
             
          
           
               
                   
                 0 
                 2889 
                 2889 
                 2889 
                 2889 
                 2889 
               
               
                   
                 2.5 
                 2889 
                 2890 
                 2902 
                 2917 
                 2909 
               
               
                   
                 5 
                 2881 
                 2900 
                 2968 
                 3043 
                 3061 
               
               
                   
                 7.5 
                 2866 
                 2924 
                 3097 
                 3211 
                 3221 
               
               
                   
                 10 
                 2846 
                 2969 
                 3196 
                 3264 
                 3260 
               
               
                   
                 12.5 
                 2815 
                 3020 
                 3223 
                 3209 
                 3122 
               
               
                   
                 15 
                 2782 
                 3058 
                 3198 
                 2901 
                 2715 
               
               
                   
                 17.5 
                 2740 
                 3073 
                 3028 
                 2467 
                 2278 
               
               
                   
                 20 
                 2691 
                 3055 
                 2709 
                 2071 
                 1890 
               
               
                   
                 22.5 
                 2637 
                 3017 
                 2342 
                 1734 
                 1591 
               
               
                   
                 25 
                 2578 
                 2957 
                 2010 
                 1472 
                 1342 
               
               
                   
                 27.5 
                 2511 
                 2852 
                 1718 
                 1231 
                 1095 
               
               
                   
                 30 
                 2441 
                 2674 
                 1473 
                 1012 
                 897 
               
               
                   
                 32.5 
                 2366 
                 2432 
                 1267 
                 823 
                 724 
               
               
                   
                 35 
                 2285 
                 2160 
                 1058 
                 676 
                 627 
               
               
                   
                 37.5 
                 2199 
                 1898 
                 885 
                 585 
                 564 
               
               
                   
                 40 
                 2109 
                 1655 
                 725 
                 533 
                 535 
               
               
                   
                 42.5 
                 2012 
                 1427 
                 597 
                 502 
                 479 
               
               
                   
                 45 
                 1912 
                 1223 
                 514 
                 446 
                 386 
               
               
                   
                 47.5 
                 1807 
                 1047 
                 458 
                 351 
                 246 
               
               
                   
                 50 
                 1699 
                 886 
                 427 
                 215 
                 107 
               
               
                   
                 52.5 
                 1588 
                 721 
                 371 
                 88 
                 30 
               
               
                   
                 55 
                 1476 
                 584 
                 286 
                 22 
                 0 
               
               
                   
                 57.5 
                 1361 
                 454 
                 163 
                 0 
                 0 
               
               
                   
                 60 
                 1243 
                 357 
                 59 
                 0 
                 0 
               
               
                   
                 62.5 
                 1124 
                 287 
                 8 
                 0 
                 0 
               
               
                   
                 65 
                 1004 
                 250 
                 0 
                 0 
                 0 
               
               
                   
                 67.5 
                 884 
                 208 
                 1 
                 0 
                 0 
               
               
                   
                 70 
                 762 
                 141 
                 0 
                 0 
                 0 
               
               
                   
                 72.5 
                 643 
                 56 
                 0 
                 0 
                 0 
               
               
                   
                 75 
                 525 
                 18 
                 0 
                 0 
                 0 
               
               
                   
                 77.5 
                 409 
                 13 
                 0 
                 0 
                 0 
               
               
                   
                 80 
                 298 
                 10 
                 0 
                 0 
                 0 
               
               
                   
                 82.5 
                 195 
                 9 
                 0 
                 0 
                 0 
               
               
                   
                 85 
                 100 
                 6 
                 0 
                 0 
                 0 
               
               
                   
                 87.5 
                 29 
                 5 
                 1 
                 1 
                 0 
               
               
                   
                 90 
                 0 
                 0 
                 0 
                 0 
                 0 
               
               
                   
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
             
               
               
               
             
           
               
                 TABLE 21b 
               
             
             
               
                   
               
               
                 Zonal Lumen Summary 
               
             
          
           
               
                 Zone 
                 Lumens 
                 Summary 
               
               
                   
               
             
          
           
               
                  0- 
                 5 
                 69 
               
               
                  5- 
                 10 
                 220 
               
               
                 10- 
                 15 
                 368 
               
               
                 15- 
                 20 
                 456 
               
               
                 20- 
                 25 
                 483 
               
               
                 25- 
                 30 
                 481 
               
               
                 30- 
                 35 
                 447 
               
               
                 35- 
                 40 
                 396 
               
               
                 40- 
                 45 
                 349 
               
               
                 45- 
                 50 
                 291 
               
               
                 50- 
                 55 
                 216 
               
               
                 55- 
                 60 
                 150 
               
               
                 60- 
                 65 
                 104 
               
               
                 65- 
                 70 
                 82 
               
               
                 70- 
                 75 
                 49 
               
               
                 75- 
                 80 
                 29 
               
               
                 80- 
                 85 
                 14 
               
               
                 85- 
                 90 
                 3 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                   
                 TABLE 21c 
               
             
             
               
                   
                   
               
               
                   
                 RC 
               
             
          
           
               
                   
                 80 
                 70 
                 50 
                 30 
                 10 
                 0 
               
             
          
           
               
                 RW 
                 70 
                 50 
                 30 
                 10 
                 70 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 0 
               
               
                   
               
             
          
           
               
                 0 
                 112 
                 112 
                 112 
                 112 
                 110 
                 110 
                 110 
                 110 
                 105 
                 105 
                 105 
                 100 
                 100 
                 100 
                 96 
                 96 
                 96 
                 94 
               
               
                 1 
                 105 
                 102 
                 99 
                 96 
                 103 
                 100 
                 97 
                 95 
                 96 
                 94 
                 92 
                 93 
                 91 
                 89 
                 89 
                 88 
                 87 
                 85 
               
               
                 2 
                 98 
                 93 
                 88 
                 84 
                 96 
                 91 
                 86 
                 83 
                 88 
                 84 
                 81 
                 85 
                 80 
                 77 
                 76 
                 81 
                 79 
                 77 
               
               
                 3 
                 92 
                 84 
                 78 
                 74 
                 90 
                 83 
                 77 
                 73 
                 80 
                 76 
                 72 
                 78 
                 74 
                 71 
                 76 
                 72 
                 69 
                 68 
               
               
                 4 
                 86 
                 77 
                 70 
                 65 
                 84 
                 76 
                 70 
                 65 
                 74 
                 68 
                 64 
                 72 
                 67 
                 63 
                 70 
                 66 
                 63 
                 61 
               
               
                 5 
                 80 
                 71 
                 64 
                 59 
                 79 
                 70 
                 63 
                 58 
                 68 
                 62 
                 58 
                 66 
                 61 
                 57 
                 64 
                 60 
                 57 
                 55 
               
               
                 6 
                 75 
                 65 
                 58 
                 53 
                 74 
                 64 
                 58 
                 53 
                 63 
                 57 
                 53 
                 61 
                 56 
                 52 
                 60 
                 55 
                 52 
                 50 
               
               
                 7 
                 71 
                 60 
                 53 
                 48 
                 69 
                 59 
                 53 
                 48 
                 58 
                 52 
                 48 
                 57 
                 52 
                 48 
                 56 
                 51 
                 47 
                 46 
               
               
                 8 
                 67 
                 56 
                 49 
                 45 
                 65 
                 55 
                 49 
                 44 
                 54 
                 48 
                 44 
                 53 
                 48 
                 44 
                 52 
                 47 
                 44 
                 42 
               
               
                 9 
                 63 
                 52 
                 46 
                 41 
                 62 
                 52 
                 45 
                 41 
                 51 
                 45 
                 41 
                 50 
                 44 
                 41 
                 49 
                 44 
                 40 
                 39 
               
               
                 10 
                 59 
                 49 
                 42 
                 38 
                 58 
                 48 
                 42 
                 38 
                 47 
                 42 
                 38 
                 47 
                 41 
                 38 
                 46 
                 41 
                 38 
                 36 
               
               
                   
               
             
          
         
       
     
         [0119]      FIG. 28  is a zonal rumination chart for the exemplary reflector of  FIG. 26  using a single 54 watt T5 linear fluorescent lamp rated at 4460 lumens. 
         [0120]      FIG. 29  is an illustration of a top view of a reflector  290  for a luminaire according to another exemplary embodiment of the present invention. As illustrated in  FIG. 29 , the reflector  290  has sides  292 , socket notches  294 , half-circle notches  296 , and fastener holes  298  that are substantially similar to those of the embodiment described above with respect to  FIGS. 1-4 . The reflector itself has a length  290   a . In an exemplary embodiment, the reflector  290  can be 48 inches long. 
         [0121]    The socket notches  294  are located at either end of the reflector  290 , and are an appropriate length  294   a  and width  294   b  to accommodate the installation of a standard socket. In an exemplary embodiment, the socket notches  294  can be 2.963 inches long and 0.775 inches wide, although the socket notches  294  may be of any size or shape necessary to accommodate a socket for a fluorescent lamp. 
         [0122]    The half-circle notches  296  are located in pairs at each end of the reflector  290  and are configured to allow a power cable (not shown) to pass through the reflector  290  to a luminaire housing (not shown) in an embodiment wherein multiple reflectors  290  are connected to one another along their ends. The half-circle notches  296  may be of any diameter and in any distance from the center of the reflector  290  that is appropriate to fasten the reflector  290  to a luminaire housing (not shown). The half-circle notches  296  are spaced a distance  296   a  apart, which, in an exemplary embodiment, may be 5.203 inches. 
         [0123]    The fastener holes  298  are located along the axial center of the reflector  290  and are positioned in order to facilitate the connection of the reflector  290  to the luminaire housing (not shown). The fastener holes are located a distance  298   a  from the end of the reflector  290 . In this embodiment, the fastener holes  298  can be approximately 1.140 inches from the end of the reflector  290 . However, the distance  298   a  between the fastener holes  298  and the end of the reflector  290  varies depending on the size of the fluorescent lamp to be used in the light fixture. Depending on the size of fluorescent lamp and type of luminaire housing used, the fastener holes  268  may be of any appropriate size and placed in any appropriate location to facilitate the connection of the reflector  290  to the luminaire housing (not shown). 
         [0124]      FIG. 30  is an illustration of a cross-sectional view of the reflector of  FIG. 29 . As shown in  FIG. 30 , the reflector  290  has a rim  304  and sides  292  that are substantially similar to the corresponding features described above with respect to  FIG. 24 . Each side  292  extends downward from the top portion  300 . The top portion has a width  300   a . In an exemplary embodiment, the top portion  300  can be between 0.688 inches and 0.790 inches wide. In this embodiment, the sides  292  terminate at the rim  304  and form an opening. The rim  304  extends at an angle  306  that, in an exemplary embodiment, is approximately 58.69 degrees from the terminus of the sides  292 . The rims  304  have a length  304   a , which in an exemplary embodiment can be 0.471 inches long. 
         [0125]    As shown in  FIG. 30 , each side of this embodiment comprises five steps. The steps may take any number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step are listed below in Table 22. The dimensions of each step of an alternative exemplary embodiment of the reflector of  FIG. 29  are listed below in Table 23. 
         [0000]    
       
         
               
               
               
             
               
               
               
             
           
               
                 TABLE 22 
               
               
                   
               
               
                 Step 
                 Distance Along Side (302a) 
                 Angle from Prior Step (302b) 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 0.79 
                 162.48° 
               
               
                 2 
                 0.924 
                 164.48° 
               
               
                 3 
                 1.073 
                 165.41° 
               
               
                 4 
                 1.226 
                 170.84° 
               
               
                 5 
                 1.273 
                 172.09° 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
               
               
             
               
               
               
             
           
               
                 TABLE 23 
               
               
                   
               
               
                 Step 
                 Distance Along Side (302a) 
                 Angle from Prior Step (302b) 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 0.79 
                 160.48° 
               
               
                 2 
                 0.924 
                 162.48° 
               
               
                 3 
                 1.073 
                 165.41° 
               
               
                 4 
                 1.102 
                 170.84° 
               
               
                 5 
                 1.167 
                 172.09° 
               
               
                   
               
             
          
         
       
     
         [0126]      FIG. 31  is an illustration of a top view of a reflector  310  for a luminaire according to another exemplary embodiment of the present invention. As illustrated in  FIG. 31 , the reflector  310  has sides  312 , socket notches  314 , half-circle notches  316 , and fastener holes  318  that are substantially similar to those of the embodiment described above with respect to  FIG. 26 . 
         [0127]    The socket notches  314  are located at either end of the reflector  310 , and are an appropriate length  314   a  and width  314   b  to accommodate the installation of a standard socket. In an exemplary embodiment, the socket notches  314  can be 1.5 inches wide and 1.6 inches long, although the socket notches  314  may be of any size or shape necessary to accommodate a socket for a fluorescent lamp. 
         [0128]    The half-circle notches  316  are located in pairs at each end of the reflector  260  and are configured to allow a power cable (not shown) to pass through the reflector  310  to a luminaire housing (not shown) in an embodiment wherein multiple reflectors  310  are connected to one another along their ends. The half-circle notches  316  may be of any diameter and in a distance  316   a  from the center of the reflector  310  that is appropriate to fasten the reflector  310  to a luminaire housing (not shown). In an exemplary embodiment, the half circle notches may be 2.12 inches from the center of the reflector  310 . 
         [0129]    The fastener holes  318  are located along the axial center of the reflector  310  and are positioned in order to facilitate the connection of the reflector  310  to the luminaire housing (not shown). The fastener holes are located a distance  318   a  on either side of the center of the reflector  310 . In this embodiment, the fastener holes  318  can be approximately 21.80 inches from the center of the reflector  310 . However, the distance  318   a  between the fastener holes  318  and the center of the reflector  310  varies depending on the size of the fluorescent lamp to be used in the light fixture. Depending on the size of fluorescent lamp and type of luminaire housing used, the fastener holes  318  may be of any appropriate size and placed in any appropriate location to facilitate the connection of the reflector  310  to the luminaire housing (not shown). 
         [0130]    The reflector  310  also has secondary fastener holes  320  that may assist in coupling the reflector to the luminaire housing (not shown). The secondary fastener holes  320  have a diameter  320   a  and are disposed a distance  320   b  from the center of the reflector  310 . In an exemplary embodiment, the secondary fastener holes  320  may be disposed 20.25 inches from the center of the reflector  320 , and may be 0.19 inches in diameter, although the dimensions and locations of the secondary fastener holes can be of any size appropriate to fasten the reflector to a luminaire housing. 
         [0131]      FIG. 32  is an illustration of a cross-sectional view of the reflector of  FIG. 31 . As shown in  FIG. 32 , the reflector  310  has a rim  326  and sides  312  that are substantially similar to the corresponding features described above with respect to  FIG. 24 . Each side  312  extends downward from the top portion  322 . In this embodiment, the sides  312  terminate at the rim  326  and form an opening. The rim  326  extends at an angle  328  that, in an exemplary embodiment, is approximately 58.69 degrees from the terminus of the sides  312 . The rims  326  have a length  326   a , which in an exemplary embodiment can be 0.471 inches long. 
         [0132]    As shown in  FIG. 32 , each side of this embodiment comprises five steps. The steps may take any number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step are listed below in Table 24. 
         [0000]    
       
         
               
               
               
             
               
               
               
             
           
               
                 TABLE 24 
               
               
                   
               
               
                 Step 
                 Distance Along Side (324a) 
                 Angle from Prior Step (324b) 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 0.79 
                 160.48° 
               
               
                 2 
                 0.924 
                 162.48° 
               
               
                 3 
                 1.073 
                 165.41° 
               
               
                 4 
                 1.102 
                 170.84° 
               
               
                 5 
                 1.167 
                 172.09° 
               
               
                   
               
             
          
         
       
     
         [0133]    Table 24a below provides light distribution data for a configuration of the reflector  310  in a luminaire using a single 54 watt T5 fluorescent lamp rated at 4460 lumens. Table 24b below provides zonal lumen data for this configuration of the reflector  410 , and Table 24c below provides the reflector&#39;s  310  efficiency of producing light on a horizontal surface as determined by the zonal cavity method. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 24a 
               
             
             
               
                   
               
               
                 Candela distribution 
               
             
          
           
               
                   
                 0 
                 22.5 
                 45 
                 67.5 
                 90 
               
               
                   
                   
               
             
          
           
               
                   
                 0 
                 3848 
                 3848 
                 3848 
                 3848 
                 3848 
               
               
                   
                 2.5 
                 3837 
                 3856 
                 3884 
                 3911 
                 3907 
               
               
                   
                 5 
                 3830 
                 3885 
                 3935 
                 3898 
                 3850 
               
               
                   
                 7.5 
                 3802 
                 3906 
                 3788 
                 3615 
                 3520 
               
               
                   
                 10 
                 3777 
                 3878 
                 3548 
                 3174 
                 3026 
               
               
                   
                 12.5 
                 3738 
                 3760 
                 3188 
                 2693 
                 2531 
               
               
                   
                 15 
                 3691 
                 3606 
                 2791 
                 2260 
                 2072 
               
               
                   
                 17.5 
                 3636 
                 3433 
                 2436 
                 1807 
                 1630 
               
               
                   
                 20 
                 3574 
                 3203 
                 2076 
                 1481 
                 1359 
               
               
                   
                 22.5 
                 3502 
                 2946 
                 1708 
                 1232 
                 1101 
               
               
                   
                 25 
                 3423 
                 2669 
                 1439 
                 1009 
                 945 
               
               
                   
                 27.5 
                 3336 
                 2405 
                 1228 
                 886 
                 845 
               
               
                   
                 30 
                 3241 
                 2154 
                 1022 
                 795 
                 754 
               
               
                   
                 32.5 
                 3138 
                 1901 
                 875 
                 708 
                 665 
               
               
                   
                 35 
                 3031 
                 1640 
                 782 
                 625 
                 598 
               
               
                   
                 37.5 
                 2917 
                 1384 
                 701 
                 564 
                 561 
               
               
                   
                 40 
                 2795 
                 1190 
                 623 
                 531 
                 536 
               
               
                   
                 42.5 
                 2668 
                 1030 
                 547 
                 505 
                 509 
               
               
                   
                 45 
                 2536 
                 871 
                 488 
                 479 
                 504 
               
               
                   
                 47.5 
                 2398 
                 717 
                 452 
                 474 
                 454 
               
               
                   
                 50 
                 2255 
                 609 
                 424 
                 419 
                 334 
               
               
                   
                 52.5 
                 2105 
                 529 
                 396 
                 292 
                 167 
               
               
                   
                 55 
                 1953 
                 457 
                 386 
                 135 
                 45 
               
               
                   
                 57.5 
                 1797 
                 388 
                 331 
                 28 
                 0 
               
               
                   
                 60 
                 1640 
                 323 
                 210 
                 0 
                 0 
               
               
                   
                 62.5 
                 1478 
                 277 
                 75 
                 1 
                 0 
               
               
                   
                 65 
                 1316 
                 246 
                 5 
                 0 
                 0 
               
               
                   
                 67.5 
                 1153 
                 218 
                 2 
                 0 
                 0 
               
               
                   
                 70 
                 992 
                 201 
                 1 
                 0 
                 0 
               
               
                   
                 72.5 
                 830 
                 130 
                 1 
                 0 
                 0 
               
               
                   
                 75 
                 674 
                 37 
                 0 
                 0 
                 0 
               
               
                   
                 77.5 
                 520 
                 17 
                 0 
                 0 
                 0 
               
               
                   
                 80 
                 373 
                 13 
                 0 
                 0 
                 0 
               
               
                   
                 82.5 
                 230 
                 10 
                 0 
                 0 
                 0 
               
               
                   
                 85 
                 106 
                 8 
                 0 
                 0 
                 0 
               
               
                   
                 87.5 
                 24 
                 5 
                 0 
                 0 
                 0 
               
               
                   
                 90 
                 0 
                 0 
                 0 
                 0 
                 0 
               
               
                   
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
             
               
               
               
             
           
               
                 TABLE 24b 
               
             
             
               
                   
               
               
                 Zonal Lumen Summary 
               
             
          
           
               
                 Zone 
                 Lumens 
                 Summary 
               
               
                   
               
             
          
           
               
                  0- 
                 5 
                 93 
               
               
                  5- 
                 10 
                 268 
               
               
                 10- 
                 15 
                 379 
               
               
                 15- 
                 20 
                 425 
               
               
                 20- 
                 25 
                 429 
               
               
                 25- 
                 30 
                 418 
               
               
                 30- 
                 35 
                 397 
               
               
                 35- 
                 40 
                 366 
               
               
                 40- 
                 45 
                 340 
               
               
                 45- 
                 50 
                 310 
               
               
                 50- 
                 55 
                 256 
               
               
                 55- 
                 60 
                 190 
               
               
                 60- 
                 65 
                 133 
               
               
                 65- 
                 70 
                 101 
               
               
                 70- 
                 75 
                 71 
               
               
                 75- 
                 80 
                 37 
               
               
                 80- 
                 85 
                 17 
               
               
                 85- 
                 90 
                 2 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                   
                 TABLE 24c 
               
             
             
               
                   
                   
               
               
                   
                 RC 
               
             
          
           
               
                   
                 80 
                 70 
                 50 
                 30 
                 10 
                 0 
               
             
          
           
               
                 RW 
                 70 
                 50 
                 30 
                 10 
                 70 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 50 
                 30 
                 10 
                 0 
               
               
                   
               
             
          
           
               
                 0 
                 113 
                 113 
                 113 
                 113 
                 110 
                 110 
                 110 
                 110 
                 105 
                 105 
                 105 
                 101 
                 101 
                 101 
                 97 
                 97 
                 97 
                 95 
               
               
                 1 
                 106 
                 102 
                 99 
                 96 
                 103 
                 100 
                 97 
                 95 
                 96 
                 94 
                 92 
                 93 
                 91 
                 89 
                 89 
                 88 
                 87 
                 85 
               
               
                 2 
                 99 
                 92 
                 87 
                 83 
                 96 
                 91 
                 86 
                 82 
                 87 
                 84 
                 80 
                 85 
                 81 
                 79 
                 82 
                 79 
                 77 
                 75 
               
               
                 3 
                 92 
                 84 
                 78 
                 73 
                 90 
                 82 
                 77 
                 72 
                 80 
                 75 
                 71 
                 77 
                 73 
                 70 
                 75 
                 72 
                 69 
                 67 
               
               
                 4 
                 86 
                 76 
                 70 
                 64 
                 84 
                 75 
                 69 
                 64 
                 73 
                 68 
                 63 
                 71 
                 66 
                 62 
                 69 
                 65 
                 62 
                 60 
               
               
                 5 
                 80 
                 70 
                 63 
                 58 
                 78 
                 69 
                 62 
                 58 
                 67 
                 61 
                 57 
                 65 
                 60 
                 56 
                 64 
                 59 
                 56 
                 54 
               
               
                 6 
                 75 
                 65 
                 57 
                 52 
                 73 
                 64 
                 57 
                 52 
                 62 
                 56 
                 52 
                 61 
                 55 
                 51 
                 59 
                 55 
                 51 
                 49 
               
               
                 7 
                 71 
                 60 
                 53 
                 48 
                 69 
                 59 
                 52 
                 48 
                 58 
                 52 
                 47 
                 56 
                 51 
                 47 
                 55 
                 50 
                 47 
                 45 
               
               
                 8 
                 66 
                 56 
                 49 
                 44 
                 65 
                 55 
                 48 
                 44 
                 54 
                 48 
                 44 
                 53 
                 47 
                 43 
                 52 
                 47 
                 43 
                 42 
               
               
                 9 
                 63 
                 52 
                 45 
                 41 
                 62 
                 51 
                 45 
                 41 
                 50 
                 45 
                 40 
                 49 
                 44 
                 40 
                 49 
                 44 
                 40 
                 39 
               
               
                 10 
                 59 
                 49 
                 42 
                 38 
                 58 
                 48 
                 42 
                 38 
                 47 
                 42 
                 38 
                 47 
                 41 
                 37 
                 46 
                 41 
                 37 
                 36 
               
               
                   
               
             
          
         
       
     
         [0134]      FIG. 33  is a zonal lumination chart for the exemplary reflector of  FIG. 31  using a single 54 watt T5 linear fluorescent lamp rated at 4460 lumens. 
         [0135]      FIG. 34  is an illustration of a top view of a reflector  340  for a luminaire according to another exemplary embodiment of the present invention. As illustrated in  FIG. 34 , the reflector  340  has sides  342 , socket notches  344 , half-circle notches  346 , and fastener holes  348  that are substantially similar to those of the embodiment described above with respect to  FIG. 29 . The reflector itself has a length  340   a . In an exemplary embodiment, the reflector  340  can be 48 inches long. 
         [0136]    The socket notches  344  are located at either end of the reflector  340 , and are an appropriate length  344   a  and width  344   b  to accommodate the installation of a standard socket. In an exemplary embodiment, the socket notches  344  can be 2.963 inches long and 0.775 inches wide, although the socket notches  344  may be of any size or shape necessary to accommodate a socket for a fluorescent lamp. 
         [0137]    The half-circle notches  346  are located in pairs at each end of the reflector  340  and are configured to allow a power cable (not shown) to pass through the reflector  340  to a luminaire housing (not shown) in an embodiment wherein multiple reflectors  340  are connected to one another along their ends. The half-circle notches  346  may be of any diameter and in any distance from the center of the reflector  340  that is appropriate to fasten the reflector  340  to a luminaire housing (not shown). The half-circle notches  346  are spaced a distance  346   a  apart, which, in an exemplary embodiment, may be 5.203 inches. 
         [0138]    The fastener holes  348  are located along the axial center of the reflector  340  and are positioned in order to facilitate the connection of the reflector  340  to the luminaire housing (not shown). The fastener holes are located a distance  348   a  from the end of the reflector  340 . In this embodiment, the fastener holes  348  can be approximately 1.140 inches from the end of the reflector  340 . However, the distance  348   a  between the fastener holes  348  and the end of the reflector  340  varies depending on the size of the fluorescent lamp to be used in the light fixture. Depending on the size of fluorescent lamp and type of luminaire housing used, the fastener holes  348  may be of any appropriate size and placed in any appropriate location to facilitate the connection of the reflector  340  to the luminaire housing (not shown). 
         [0139]      FIG. 35  is an illustration of a cross-sectional view of the reflector of  FIG. 34 . As shown in  FIG. 35 , the reflector  340  has a rim  354  and sides  342  that are substantially similar to the corresponding features described above with respect to  FIG. 32 . Each side  342  extends downward from the top portion  350 . The top portion has a width  350   a . In an exemplary embodiment, the top portion  350  can be 0.896 inches wide. In this embodiment, the sides  342  terminate at the rim  354  and form an opening a distance  340   c  from the top portion  350 . The rim  354  extends at an angle  354   b  that, in an exemplary embodiment, is slightly greater than ninety degrees from the terminus of the sides  342 . The rims  354  have a length  354   a , which in an exemplary embodiment can be 0.471 inches long. In an exemplary embodiment, the sides  342  may terminate 3.713 inches from the top portion  350 . 
         [0140]    As shown in  FIG. 35 , each side of this embodiment comprises seven steps. The steps may take any number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step are listed below in Table 25. 
         [0000]    
       
         
               
               
               
             
               
               
               
             
           
               
                 TABLE 25 
               
               
                   
               
               
                 Step 
                 Distance Along Side (352a) 
                 Angle from Horizontal (352b) 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 0.896 
                 167.82° 
               
               
                 2 
                 0.6 
                 154.83° 
               
               
                 3 
                 0.65 
                 142.49° 
               
               
                 4 
                 0.7 
                 131.79° 
               
               
                 5 
                 0.75 
                 122.36° 
               
               
                 6 
                 0.8 
                 113.89° 
               
               
                 7 
                 0.805 
                 106.18° 
               
               
                   
               
             
          
         
       
     
         [0141]      FIG. 36  is an illustration of a top view of a reflector  360  for a luminaire according to another exemplary embodiment of the present invention. As illustrated in  FIG. 36 , the reflector  360  has sides  362 , socket notches  364 , half-circle notches  366 , and fastener holes  368  that are substantially similar to those of the embodiment described above with respect to  FIG. 34 . The reflector itself has a length  360   a . In an exemplary embodiment, the reflector  360  can be 48 inches long. 
         [0142]    The socket notches  364  are located at either end of the reflector  360 , and are an appropriate length  364   a  and width  364   b  to accommodate the installation of a standard socket. In an exemplary embodiment, the socket notches  364  can be 2.963 inches long and 0.775 inches wide, although the socket notches 364 may be of any size or shape necessary to accommodate a socket for a fluorescent lamp. 
         [0143]    The half-circle notches  366  are located in pairs at each end of the reflector  360  and are configured to allow a power cable (not shown) to pass through the reflector  360  to a luminaire housing (not shown) in an embodiment wherein multiple reflectors  360  are connected to one another along their ends. The half-circle notches  366  may be of any diameter and in any distance from the center of the reflector  360  that is appropriate to fasten the reflector  360  to a luminaire housing (not shown). The half-circle notches  366  are spaced a distance  366   a  apart, which, in an exemplary embodiment, may be 5.203 inches. 
         [0144]    The fastener holes  368  are located along the axial center of the reflector  360  and are positioned in order to facilitate the connection of the reflector  360  to the luminaire housing (not shown). The fastener holes are located a distance  368   a  from the end of the reflector  360 . In this embodiment, the fastener holes  368  can be approximately 1.140 inches from the end of the reflector  360 . However, the distance  368   a  between the fastener holes  368  and the end of the reflector  360  varies depending on the size of the fluorescent lamp to be used in the light fixture. Depending on the size of fluorescent lamp and type of luminaire housing used, the fastener holes  368  may be of any appropriate size and placed in any appropriate location to facilitate the connection of the reflector  360  to the luminaire housing (not shown). 
         [0145]      FIG. 37  is an illustration of a cross-sectional view of the reflector of  FIG. 36 . As shown in  FIG. 37 , the reflector  360  has a rim  374  and sides  362  that are substantially similar to the corresponding features described above with respect to  FIG. 35 . Each side  362  extends downward from the top portion  370 . The top portion has a width  370   a . In an exemplary embodiment, the top portion  370  can be 0.7 inches wide. In this embodiment, the sides  362  terminate at the rim  374  and form an opening a distance  360   c  from the top portion  370 . The rim  374  extends at an angle  374   b  that, in an exemplary embodiment, is slightly greater than ninety degrees from the terminus of the sides  362 . The rims  374  have a length  374   a , which in an exemplary embodiment can be 0.471 inches long. In an exemplary embodiment, the sides  362  terminate a distance 3.713 inches from the top portion  370 . 
         [0146]    As shown in  FIG. 37 , each side of this embodiment comprises seven steps. The steps may take any number of forms as previously described above with respect to  FIGS. 3-4 . The dimensions of each step are listed below in Table 26. 
         [0000]    
       
         
               
               
               
             
               
               
               
             
           
               
                 TABLE 26 
               
               
                   
               
               
                 Step 
                 Distance Along Side (372a) 
                 Angle from Horizontal (372b) 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1 
                 0.896 
                 163.12° 
               
               
                 2 
                 0.6 
                 144.44° 
               
               
                 3 
                 0.65 
                 128.68° 
               
               
                 4 
                 0.7 
                 115.67° 
               
               
                 5 
                 0.75 
                 104.80° 
               
               
                 6 
                 0.8 
                  95.89° 
               
               
                   
               
             
          
         
       
     
         [0147]    It will be apparent to a person having ordinary skill in the at that the above-described reflectors are exemplary embodiments of the reflector of the present invention and are not intended to be limiting. For example, similar reflectors of differing sizes that will accommodate a variety of luminaire lamps and housings are contemplated by the present invention. Further, a reflector in accordance with the present invention can be made of any suitable material and can have any appropriate reflective surface. 
         [0148]    It is understood that the foregoing description describes examples only and the claims are intended to cover deviations from this disclosure. 
         [0149]    Any spatial references such as, for example, “upper,” “lower,” “above,” “below,” “between,” “vertical,” “horizontal,” “angular,” “upward,” “downward,” “side-to-side,” “left-to-right,” “right-to-left,” “top-to-bottom,” “bottom-to-top,” “left,” “right,” etc., are for the purpose of illustration only and do not limit the specific orientation or location of the structure described above. 
         [0150]    In several exemplary embodiments, one or more of the operational steps in each embodiment may be omitted. Additionally, in some instances, some features of the present disclosure may be employed without a corresponding use of the other features. Furthermore, one or more of the above-described embodiments and/or variations may be combined in whole or in part with any one or more of the other above-described embodiments and/or variations. 
         [0151]    Although several exemplary embodiments have been described in detail above, the embodiments described are exemplary only and are not limiting, and those having ordinary skill in the art will readily appreciate that many other modifications, changes, and/or substitutions are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of the present disclosure. Accordingly, all such modifications, changes, and/or substitutions are intended to be included within the scope of this disclosure as defined in the following claims.