Abstract:
Luminaires intended to deliver maximal light flux to a playing field with improved uniformity, the invention provides primary reflector structures having shaped facets, the several reflectors being capable of maximizing lumen delivery onto the playing field when considered relative to economy of manufacture. In certain embodiments of the invention, a shielding device or flux manager is employed for producing target extinctions by management of flux to precisely pass flux nearby original arc and through a second bounce off the reflector structure to direct that flux back into the beam. A virtual arc is thus produced in proximity to the original arc with the virtual arc acting as a second source. The flux manager acts to reduce glare and “spill” light. Performance optimization is further provided in embodiments using the flux manager through additional use of a multi-faceted reflector insert which re-aims light which would have been incident on portions of the reflector structure and which light is blocked by the flux manager. The improved light distribution provided by the luminaires of the invention allow use of fewer luminaires for a given playing field lighting performance.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The invention relates generally to the lighting of stadia, playing fields and similar areas and particularly to lighting fixtures intended for such lighting applications and which utilize reflective surfaces in combination with illumination sources to produce desired work plane illumination levels. 
     2. Description of the Prior Art 
     The field of sports lighting has evolved over time into a form of outdoor lighting having characteristics similar to outdoor area lighting yet peculiar to those requirements which come into play when lighting athletic playing fields. Uniformity of illuminance is of critical importance as is illumination level per se with these factors being joined by the everpresent need for optimum performance at the lowest possible cost. Advances in the art thus occur at least in part through development of luminaire configurations which effectively deliver a maximal amount of flux onto a playing area. In the sports light field in particular both vertical and horizontal illuminances must also be addressed as must illumination levels required for optimum video camera operation inter alia. Luminaire design also typically takes into account conventional arrangements of pole locations, mounting heights and aiming angles. Other objectives include consistent overlap of beam patterns in order to maximize system performance while minimizing costly applications engineering efforts usually associated with sports lighting systems. The prior art has long encompassed the mounting of discrete clusters of sportslighting luminaires at periodic locations about the perimeter of a playing area. Within these conventional system constraints, luminaire performance is evaluated not only as a single unit but also within these discrete clusters, the net distribution of each cluster being necessarily considered in performance evaluation. As is therefore to be appreciated, luminaire design in the sportslighting field is a complex matter dependent upon a variety of factors not the least of which is total system cost. 
     When considering cost, operational costs cannot be dismissed as inconsequential. Prior sportslighting systems which utilize less efficient light sources such as incandescent and mercury vapor must be improved in order to gain the benefits of greater efficiency with comparable light levels and desirable light quality which are to be gained from sources such as high pressure sodium and metal halide, as example Greatest luminaire flexibility is attained through luminaire design capable of using the widest variety of illumination sources to include high pressure sodium and metal halide and the like. 
     Examples of prior art lighting designed for the purposes to which the present invention are directed are disclosed by Lemons et al in U.S. Pat. Nos. 4,864,476 and 5,313,379 and by Tickner in U.S. Pat. Nos. 5,355,290 and 5,377,086. As is conventional in the art, these patents disclose the use of reflector structures intended to provide desired illumination levels on a work plane. Sportslighting luminaires of the prior art can also be seen in the TV Sportslighting luminaire manufactured by Lithonia Lighting, a division of National Service Industries, Inc. of Atlanta, Ga., this luminaire including in its optical structure an anodized aluminum reflector capable of a range of beam spreads. The TV luminaire further includes a horizontal degree aiming scale and repositioning locator as well as a vertical aiming adjustment mechanism complete with degree aiming scale and a repositioning stop. While sportslighting luminaire devices such as the TV luminaire of Lithonia Lighting provide lighting capabilities of substantial utility and while other luminaire devices of the prior art also provide capabilities desirably useful in the sportslighting field, a need exists in the art for sportslighting luminaires capable of improved cost and energy efficiencies and which particularly provide performance capabilities allowing use of fewer luminaires within a given system arrangement. 
     SUMMARY OF THE INVENTION 
     The invention provides luminaire structures intended for illumination of stadia, playing fields and similar areas and which are particularly adapted to mounting in discrete clusters on poles or the like at locations about the perimeter of a playing area which is to be illuminated. The luminaire structures of the invention are particularly improved in the several embodiments of the invention by reflectors which usually include a faceted reflector body with individual facets being arranged in a manner intended to optimize performance. In the several embodiments of the invention, improved principal reflectors are used in combination with an illumination source to provide an improved luminaire useful in sportslighting applications. In certain embodiments of the invention, faceted reflectors are combined according to the invention with a shielding device or flux manager and a reflector insert for optimization of light uniformity and reduction of glare and “spill” light. The flux manager structures of the invention produce target extinctions by management of flux to precisely pass flux nearby original arc and through a second bounce off of the principal reflector to direct that flux back into the beam. A virtual arc is produced in proximity to the original arc with the virtual arc acting as a second source. The reflector insert is a multi-faceted reflector with aimed facets which re-direct light which would have been incident on the flux manager. One embodiment of the invention is comprised of a principal reflector having individual facets aimed in a manner to optimize uniformity of light distribution with reduced glare and light “spill” without the need for a flux manager and reflector insert. The several embodiments of the invention provide improved light distributions and performance of a magnitude which allows use of fewer luminaires for a given playing field configuration. 
     The luminaire structures of the invention typically include a ballast and junction box housing assembly having mounting trunnion arrangements with a horizontal degree aiming scale and a respositioning locator. Vertical aiming adjustment is also provided to include a degree aiming scale and a repositioning stop. Mounted to the housing assembly is one of the primary reflectors of the invention, the reflectors being sealed by a hinged lens formed of heavy-duty thermal-resistant, shock-resistant and impact-resistant tempered glass. An illumination source such as a standard BT-56 jacketed lamp is mounted within the principal reflector by a porcelain mogul-base socket in a fixed relation to the reflective surfaces of the principal reflector. The luminaire structures of the invention typically utilize high pressure sodium or metal halide lamps of wattages within the range of 400 watts to 1500 watts. A range of beam spreads are provided by the luminaire structures of the invention. 
     Accordingly, it is an object of the invention to provide luminaire structures capable of efficiently illuminating stadia, playing fields and similar areas with light of improved uniformity. 
     It is another object of the invention to provide luminaire structures intended for sportslighting applications and having improved principal reflectors formed with facets intended to optimize performance, the principal reflectors being useful with conventional illumination sources and being improved in certain embodiments to reduce light “spillage” by the addition of a flux manager intended to produce desired target extinctions, the flux manager creating precise redirection of flux around original arc with the redirected flux being reflected by the principal reflector into the beam, the principal reflectors used with a flux manager further being optimized by addition of a reflector insert having aimed facets which re-direct light blocked by the flux manager. 
     It is a further object of the invention to provide luminaire structures having improved principal reflectors and/or improved reflector assemblies capable of sufficient improvement of illumination on the work plane of a playing field to allow use of fewer luminaires for a given playing field configuration. 
     Other objects and advantages of the invention will become more readily apparent in light of the following detailed description of the preferred embodiments. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of a first embodiment of a luminaire apparatus of the invention, and having a principal reflector configured with annular facets, a flux manager and a reflector insert; 
     FIG. 2 is a side elevational view of the luminaire apparatus of FIG. 1; 
     FIG. 3 is a plan view of the luminaire apparatus of FIG. 1; 
     FIG. 4 is an exploded view in perspective of the principal reflector of FIG. 1 configured as a portion of a reflector assembly forming a portion of a luminaire apparatus having a flux manager and a reflector insert disposed within sealed optics of said luminaire apparatus; 
     FIG. 5A is a side elevational view in section of one-half of the principal reflector of FIGS. 1 through 4; 
     FIG. 5B is a front elevational view of the principal reflector of FIG. 5A; 
     FIG. 5C is a detail view in section of a rim portion of the principal reflector of FIGS. 5A and 5B; 
     FIGS. 6A through 6E are elevational views of a shielding device or flux manager useful according to the invention; 
     FIGS. 7A through 7C are elevational views of a reflector insert useful according to the invention; 
     FIG. 8 is a diagram illustrating the geometrical configuration of a flux manager conformed according to the invention; 
     FIG. 9 is a diagram illustrating the geometrical configuration of an involute; 
     FIG. 10 is a perspective view of a principal reflector of the invention having annular facets in the manner of FIGS. 5A and 5B and having a lens mounted thereto; 
     FIG. 11 is a side elevational view of an embodiment of the invention using the principal reflector assembly of FIG. 10 on the optical structure of the luminaire as shown; 
     FIG. 12 is a plan view of the luminaire of FIG. 11; 
     FIG. 13 is a front elevational view of a principal reflector of the invention having multiple regularly-arranged facets; 
     FIG. 14 is a perspective view of the principal reflector of FIG. 13; 
     FIG. 15 is a front elevation view of a multi-faceted principal reflector of the invention having all facets thereof aimed to create a desired light distribution; 
     FIG. 16 is a perspective view of the principal reflector of FIG. 15; 
     FIG. 17A is a diagram illustrating lune segments of the principal reflector of FIG. 15; 
     FIG. 17B is a diagram of the numbered lune segments forming the reflector of FIGS. 15 and 16; 
     FIGS. 18A through 18U are diagrams illustrating respectively lines  1  through  21  of the reflector of FIGS. 15 and 16; 
     FIG. 19A is a diagram illustrating the ideal vertical candela trace of the principal reflectors of the invention; 
     FIG. 19B is a diagram illustrating the ideal horizontal candela trace of the principal reflectors of the invention, and; 
     FIG. 20 is a schematic illustrating an ideal illuminance distribution such as is intended to be produced according to the invention. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring now to the drawings and particularly to FIGS. 1 through 4, a luminaire assembly  10  configured according to a preferred embodiment of the invention is seen to include a substantially weatherproof housing  12  formed of a ballast box  14  and a junction box  16 , the luminaire assembly  10  further including a reflector assembly  18  sealed by means of glass lens  20  mounted to the substantially circular periphery of principal reflector  22 . The reflector assembly  18  is sealed to prevent entrance of contaminants into an optical chamber  24  defined by the reflector  22 . Since the luminaire assembly  10  is intended for outdoor use, it is necessary to seal the reflector assembly  18  by means of the glass lens  20  in a manner which will be described in detail hereinafter. Similarly, in order to house electronics (not shown) including ballast (not shown) and the like within the housing  12 , the ballast box  14  and the junction box  16  must seal together in a weatherproof manner and the housing  12  generally must be weatherproof. It is to be understood, however, that the luminaire assembly  12  can be used indoors such as in indoor stadia or the like. Even in an indoor environment, the luminaire assembly  10  is intended to retain weatherproof capabilities in order to positively seal electronics and the like within the housing  12  and to further seal the optical chamber  24  of the reflector assembly  18  in order to prevent degradation of the functioning of electronics within the housing  12  or degradation of the optical operation of the reflector assembly  18  which can be caused by miscellaneous contaminants including water and the like. Accordingly, even though the luminaire assembly  10  may be referred to herein as being an “outdoor” luminaire, it is to be understood that the luminaire assembly  10  can function in both indoor and outdoor environments. 
     The principal reflector  22  is formed of a heavy-gauge anodized aluminum material, inner wall surfaces of the reflector  22  primarily defining the optical chamber  24  sealed by means of the glass lens  20 . The reflector  22 , which is also seen in FIGS. 5A through 5C, has a thickness sufficient to provide the strength and rigidity necessary for functioning of the reflector  22  as the housing for the optical chamber  24  including mounting of the glass lens  20  about the periphery thereof and the supporting of structure including lamping which must be carried by the reflector  22 . Further, the reflector  22  must be sufficiently rugged to withstand winds and the like in a use enviroment. It should be understood that the light reflective inner wall surfaces of the reflector  22  could be formed on a backing of other material with that backing (not shown) being sufficiently rigid and having sufficient strength to accomplish the intended purpose. The housing  12  is preferably formed of die-cast aluminum, the electrical components (not shown) contained within the housing  12  being thermally isolated from the reflector  22  and the interior of the optical chamber  24  as well as thermally isolated from socketry and lamping which will be described hereinafter. 
     Lamping preferably takes the form of a standard BT56 jacketed metal halide lamp for wattages of 1000 and 1500 watts, an ED37 being usable for 400W. A 750 watt high pressure sodium lamp may also be employed. The lamp is referred to herein as lamp  40  but can take several forms and wattages such as are conventionally manufactured by OSRAM, Phillips, General Electric and Venture inter alia. The lamp  40  is mounted transversely within the optical chamber  24  as will be described hereinafter, the transverse orientation of the lamp  40  creating a small extinction angle when spill light control is desired. This orientation of the lamp  40  maximizes the average tilt factor through typical aiming angles. 
     The luminaire assembly  10  is further seen to include a trunnion  26  which mounts the housing  12  for pivotal movement necessary for aiming of the luminaire assembly  10 , the trunnion  26  further being seen to mount to a bracket  28  for mounting to cooperating structure (not shown) on a pole (not shown) or other structure intended for mounting of the luminaire assembly  10  in an elevated position about the periphery of an athletic field or the like. Although not shown in the drawings, a horizontal aiming scale is typically provided between the trunnion  26  and the bracket  28  to facilitate aiming of the luminaire assembly  10 . Further, a vertical aiming scale  30  is seen to be located at the connection of the housing  12  and the trunnion  26  for aiming of the luminaire assembly  10 . A socket arm  32  connects to and extends from the junction box  16  of the housing  12  to mount a socket bracket  34  which in turn mounts mogul socket  36 , the socket  36  extending through opening  38  into the interior of the reflector assembly  18  to mount the lamp  40 . Edge surfaces of the socket arm  32  which contact exterior surfaces of the reflector assembly  18  are flanged (not seen in the drawings) and shaped to conform to outer surfaces of the reflector  22 . The socket arm  32  also covers the opening  38  and effectively provides a sealing function with an appropriate gasket (not shown) in the area of the aforesaid flanged portions of the socket arm  32 . The socket arm  32  is essentially hollow interiorly and houses electrical connectors, wiring and the like (not shown) which connect to the socket  36  from the interior of the junction box  16  through the socket arm  32 . Reinforcing strips  39  disposed on inner wall surfaces of the reflector  22  facilitate mounting of the socket arm  32  to the reflector  22  through use of screws  41 . The socket arm  32  thus mounts the lamp  40  with the lamp  40  being disposed in a fixed location transversely within the optical chamber  24  in a predetermined relationship to the reflector  22  and to other portions of the reflector assembly  18  which will be described in detail hereinafter. 
     While the luminaire assembly  10  includes other functional elements of structure particularly including structure associated with and/or contained within the housing  12 , the primary advance in the art afforded by the invention relates to the reflector assembly  18  and thus those remaining portions of structure not described or shown involving the housing  12  including details of the boxes  14 ,  16  and components associated therewith or contained therein will not be described further herein. It is to be understood that ballast devices (not shown) suitable for operation of the luminaire assembly  12  are known in the art and are devised to be housed by the ballast box  14 , for example, and structure such as gaskets (not shown) necessary for sealing of the ballast box  14  to the junction box  16 , for example, are also seen to be conventional in the art. 
     Considering now with continuing reference to FIGS. 1 through 4 and with additional reference to FIGS. 5A through 5C, the reflector assembly  18  is also seen to include a shielding device known herein as a flux manager  42  which is mounted within the optical chamber  24  by means of brackets  44  and  46  respectively substantially at the periphery of the reflector  22  defined by reflector rim  48 . A detailed view of the reflector rim  48  is seen in FIG. 5C, the rim  48  including an annular trough  50  defined distally by annular flange  52  having an outwardly turned-up annular edge  54 . The glass lens  20  is mounted to the reflector rim  48  by means of a lens ring  56  which is substantially circular in conformation and which is split at one location thereof with riveted screw brackets  58  being located at the free ends of the ring  56  for receipt of a screw  60  which is tightened by torque nut  62  in a conventional manner to mount the glass lens  20 . The lens ring  56  is formed either of galvanized material or stainless steel. A lens gasket  64  is disposed about the periphery of the lens  20  and held thereon by the lens ring  56 , also in a conventional manner. The lens ring  56  can be provided with spaced slots  65  which receive a portion of a lens ring latch clip  66 , the latch clips  66  being regularly disposed about the lens ring  56  as is also conventional in the art. A hinge bracket  68  mounts to the exterior of the reflector assembly  18  by means of a rivet  70  and washer  72 , a portion of the hinge bracket  68  fitting between and aligning with portions of the brackets  58  disposed on the lens ring  56  to receive the screw  60  to provide a positive mounting of the lens  20  to the reflector  22 . 
     Centrally of the body of the reflector  22 , a flat  74  is formed, the flat having an aperture  76  formed therein for receiving a fastener such as a screw which in combination with fastening structure (not shown) attaches the reflector assembly  18  to the housing  12 . Interiorly of the optical chamber  24  and bounding the flat  74 , a semi-circular plate-like flat  78  having apertures  80  formed therein mounts a reflector insert  82  by means of pop rivets  84  which are received within aligned apertures  86  formed in the reflector insert  82  and further into the apertures  80  of the flat  78 . The reflector insert  82  is mounted in spaced relation to the flat  78  and to inner wall surfaces of the reflector  22 . 
     The flux manager  42  is mounted above a horizontal center line of the reflector  22  by the brackets  44  and  46  referred to hereinabove. The bracket  44  is substantially semi-circular in conformation and mounts immediately inside of the lens  20 , the bracket  44  having apertures  88  formed one each at each end thereof, which apertures  88  align with apertures  90  formed at each end of the bracket  46 , pop rivets  92  being received through the aligned pairs of apertures  88 ,  90  to mount the bracket  46  in a location extending substantially across the reflector  22 . The bracket  46  effectively lies along the horizontal diameter of the reflector  22 , the flux manager  42  being mounted by clips  94  which attach to the flux manager  42  and to the bracket  46  by means of pop rivets  96 . The bracket  46  is provided with a central plate  98  having apertures  100  formed near either end thereof to receive the pop rivets  96  for mounting of the flux manager  42 , the plate  98  having an arcuate cutout  102  extending over central portions thereof to conform to the shape of adjacent portions of the flux manager  42 . 
     Referring particularly to FIGS. 4,  5 A and  5 B, the reflector  22  is seen to be provided with annular facets  104  through  118  which are essentially concentric. The facets  104  through  118  are defined by segments of the reflector  22  identified as segments  120  through  134 , these segments defining the reflector  22  and essentially comprising frusto-conical sections joined at annular perimeters thereof to form the reflector  22 , each of the segments  120  through  134  essentially having a linear cross section as is seen in FIG.  5 A. FIG. 5A further provides relative dimensions of the segments  120  through  134  for a reflector  22  having a diameter of essentially  24  inches. FIG. 5A also shows the angle of each of the annular facets  104  through  118  relative to a reference line  136 , these angles being chosen for optimization of the total reflector output with respect to a desired light distribution. It is to be understood that the relative sizes of the facets  104  through  118  and the angles of the facets  104  through  118  relative to a reference could be produced by formation of a reflector body having outer surfaces which do not take the particular shapes of the segments  120  through  134  but could effectively comprise another shape within which the facets  104  through  118  are formed. However, for ease of manufacture, the segments  120  through  134  comprise exterior surfaces of the reflector  22  and are relatively defined by the vertical and horizontal dimensions in x and y planes as can be inferred from the measurements provided in FIG.  5 A. In order that the thickness of the material forming the reflector  22  does not alter the optical characteristics of the reflector  22 , the dimensions given are to the inside surfaces of the reflector  22 . 
     Given the optical characteristics of the reflector  22  as provided by the annular facets  104  through  118 , it is seen that a shielding device capable of producing a target extinction is desirable and can be provided by the flux manager  42 , the flux manager  42  blocking light which would otherwise leave the lamp  40  and produce glare or “spill”. In luminaire structures of the prior art, this light is either absorbed by a low reflectance surface or redirected by a diffusing surface. In the present invention, the flux manager  42  optimizes performance of the principal reflector  22 . The flux manager  42  is provided with an involute conformation which precisely redirects the light which is blocked as aforesaid and redirects that light past the original arc provided by the lamp  40  to form a second image, this flux then being reflected by the principal reflector  22  into the beam which is directed onto the surface which is to be illuminated. The shape of the flux manager  42  acts to define an extinction angle which begins blocking the arc at 6.25° above center beam and completely blocks the arc at 11°. In other words, the flux manager  42  produces a beam which begins extinguishing at just above 6° above the aiming angle and is totally extinguished at 11°. The flux manager  42  therefore acts as a shielding device which redirects light, which would otherwise be glare, into the beam, thus optimizing light directed onto a playing field or the like by the principal reflector  22 . The flux manager  42  essentially produces a virtual arc which is close to the original arc, the virtual arc acting due to the provision of the flux manager  42  as a second source. 
     The particular conformation of the flux manager  42  is seen in FIGS. 6A through 6D and which is more appreciated by reference to FIGS. 8 and 9. The flux manager  42  takes the shape of an involute having the following equation as derived in FIG.  9 : 
     
       
           x=a  cos + a   sin  and 
       
     
     
       
           y=a  sin − a   cos  
       
     
     as related to Cartesian coordinates where BP={circumflex over (BA)}. As seen in FIG. 9, “a” is taken to be the radius of arc tube  41  of the lamp  40 , the arc tube  41  being centered in the optical chamber  24 . Referring to FIG. 8, the shape of the flux manager  42  is derived in x, y and z with 0, 0, 0 being the center of the arc tube  41  of the lamp  40  with the center of a circular section being taken as a point on that circle forming the arc tube of the lamp at (0.1381,0.0920) with the radius being taken as (3.6504) for formation of a circular curve. For the dimensions required, an angle of 75.8361° from the y axis is subtended with an angle of 10.9082° being subtracted therefrom, the involute lying there-between. As might be generally described, the involute which is the flux manager  42  has an arcuate central body portion  138  which is partially defined by a lowermost edge  140  which is substantially a straight line and which is located just above the horizontal centerline of the reflector  22 . At either end of the central body portion  138 , the flux manager  42  curves outwardly in two directions to form end portions  142  which are nearly spherical sections. The edge  140  of the flux manager  42  curves outwardly to form arcuate edges  144 . In essence, the involute which is the flux manager  42  is symmetrical about a line bisecting the lower-most edge  140  and uppermost edge  146 . The uppermost edge  146  also is linear and curves near either end thereof to form arcuate edges  148 . The arcuate edges  144  and the arcuate edges  148  intersect at outermost ends of the flux manager  42  thus terminating the involute at either end of the flux manager  42 . The flux manager  42  is preferably generated as a surface of revolution constructed of an involute in the vertical dimension and an empirical line having an arc at either end in the horizontal direction. 
     In those embodiments of the invention which utilize the flux manager  42 , the reflector insert  82  is also utilized, the structure of the reflector insert  82  being best seen in FIGS. 7A through 7C. The reflector  82  is seen to be comprised of a multiplicity of facets  150  which re-aim light which would have been incident on portions of the reflective surface of the principal reflector  22  and which then would be blocked by the flux manager  42 . In essence, the reflector insert  82  causes the flux which would have been impingent on the flux manager  42  to be redirected to exit the optical chamber  24  at the highest possible angle below center beam without striking the flux manager or being incident with the arc of the lamp  40 . As an alternative, some light can pass over and some light can pass under. The reflector insert is symmetrical about a centerline except that five facets are removed from one side thereof for mechanical convenience. A principal reflector such as the reflector  22  fitted with the reflector insert  82  and having a diameter of nominally  24  inches would have a reflector insert  82  having a length of approximately  13  inches. The facets  150  are empirically sized and shaped to direct flux incident thereon as aforesaid. 
     The reflector assembly  18  seen in FIGS. 1 through 4 utilizes the principal reflector  22  having the annular facets  104 - 118  as particularly shown in FIG.  5 A. The reflector assembly  18  of FIGS. 1 through 4 is provided with the flux manager  42  and the reflector insert  82  to provide the functions described herein. However, the principal reflector  22  can be utilized as seen in FIG. 10 without the addition thereto of the flux manager  42  and the reflector insert  82 . In essence, the principal reflector  22  can be sealed by means of the glass lens  20  and the lens ring  56  inter alia with the principal reflector  22  being mounted to a housing such as the housing  12  of FIG. 1 inter alia, thereby providing a reflector assembly  160 . For ease of illustration, the reflector assembly  160  is shown without the complication of a housing such as the housing  12  of FIG. 1 inter alia. The reflector assembly  160  provides a desirable distribution of light to a playing field or the like albeit with some loss of lamp lumen output to glare or “spill”. 
     FIGS. 11 and 12 illustrate a luminaire assembly  170  having lamp  176  mounted transversely within optical chamber  174  defined by principal reflector  176  and sealed by lens  178  as afore-said relative to the mounting of the lens  20  to the principal reflector  22 . The lamp  172  is seen to be mounted by socket  180  which is a porcelain mogul base socket having a copper alloy nickel plates screw shell and center contact (not shown), the socket  180  being listed for up to 1500 watts at 600 volts and rated for 5KV pulses. The socket  180  essentially takes the same form as the mogul socket  36  described herein relative to the luminaire assembly  10 . The luminaire assembly  170  is illustrated in order to not only show in a simplified illustration the mounting of the lamp  172  by means of the socket  180  carried by diecast aluminum socket arm  182 , but also to point out that the several principal reflectors described herein can be utilized in a luminaire assembly such as the luminaire assembly  170  which does not utilize a shielded device such as the flux manager  42  or an internal reflector such as the reflector insert  82 . In essence, the luminaire assembly  170  could take the form of the principal reflector  22  having the annular facets  104 - 118  or could take the form of principal reflector  190  of FIGS. 13 and 14 or principal reflector  200  of FIGS. 15 and 16 inter alia, the principal reflectors  190  and  200  being described hereinafter. 
     Referring now to FIGS. 13 and 14, the principal reflector  190  is seen to be formed with annular concentric arrays  192  of facets  194 , each array  192  corresponding to the similarly located segments  120  through  134  of FIG.  5 A. Each array  192  is broken down into the facets  194  of each array by virtue of forty radial lune segments  196  which extend from the geometric center of the principal reflector  190  to cause each of the annular concentric arrays  192  to comprise forty of the facets  194 . A differing number of the lune segments  196  could be employed, the number chosen being suitable for manufacturing convenience and reflector performance. As is readily appreciated from a consideration of FIGS. 13 and 14, the facets  194  on the outermost array  192  have a different area and configuration relative to the facets  194  on those arrays  192  located progressively inwardly of the principal reflector  190 . For simplicity of illustration, only the principal reflector  190  is shown in FIGS. 13 and 14. As aforesaid, the principal reflector  190  can be placed into the luminaire assembly  170  of FIGS. 11 and 12 in order to form a luminaire assembly utilizing the principal reflector  190 . Similarly, the principal reflector  190  can substitute for the principal reflector  22  in the luminaire assembly  10  and thus be utilized in combination with the flux manager  42  and the reflector insert  82 . The facets  194  are each essentially planar. 
     Referring now to FIGS. 15 and 16, the principal reflector  200  is seen to be formed of a multiplicity of facets  222  which are of irregular configuration and formed as will be described hereinafter. Essentially, each facet  222  of the principal reflector  200  is aimed in order to provide a desired light distribution and performance. The aiming of each of the facets  222  obviates the need for the use of a shielding device such as the flux manager  42  described above and also obviates the need for the use of the reflector insert  82  as also described herein. The principal reflector  200  shown in FIGS. 15 and 16 can substitute for the reflector of FIGS. 11 and 12 to form a luminaire assembly as aforesaid. The facets  222  of the principal reflector  190  are defined by twenty-one lune segments identified as lune segments  201 ,  202  . . .  221  as identified in FIGS. 17A and 17B. The lune segments  201  through  221  essentially having the conformation suggested in FIG.  17 A and being fully defined in FIGS. 18A through 18U which provide the shape of each of the twenty-one lune segments. The shape of each of the lune segments  201  through  221  is provided by definition of points as Cartesian coordinates in x and y as shown in FIGS. 18A through 18U, the points being connected to form the lune segments  201  through  221  and then cross-connected to define inner reflective surfaces, that is, the facets  222  of the principal reflector  200  for one-half of the inner reflective surfaces of said reflector  200 . The other half of the reflector  200  are formed according to the lune segments  201  through  221  on an opposite half of the reflector  200  across a vertical centerline. In essence, the inner reflective surfaces of the reflector  200  are mirror images across the vertical centerline. 
     As noted above, FIGS. 18A through 18U are diagrams illustrating the cross-sectional shapes of each of the lune segments  201  through  221  in x and y coordinates with x and y dimensions being provided by relative reference in the following Tables I through XXI which correspond respectively to lune segments  201  through  221 . 
     
       
         
               
             
               
               
               
             
           
               
                 TABLE I 
               
             
             
               
                   
               
               
                 Lune segment 201 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.641 
                 2.717 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.691 
                 4.573 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.159 
                 5.784 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.873 
                 6.602 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.751 
                 7.161 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.728 
                 7.521 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.796 
                 7.751 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.919 
                 7.883 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.929 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE II 
               
             
             
               
                   
               
               
                 Lune segment 202 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.641 
                 2.717 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.689 
                 4.573 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.158 
                 5.783 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.872 
                 6.601 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.749 
                 7.160 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.728 
                 7.521 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.795 
                 7.750 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.919 
                 7.881 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.929 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE III 
               
             
             
               
                   
               
               
                 Lune segment 203 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.635 
                 2.717 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.684 
                 4.573 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.157 
                 5.783 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.872 
                 6.601 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.747 
                 7.157 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.727 
                 7.519 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.795 
                 7.749 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.919 
                 7.881 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.929 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE IV 
               
             
             
               
                   
               
               
                 Lune segment 204 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.725 
                 2.706 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.742 
                 4.578 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.189 
                 5.793 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.894 
                 6.613 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.760 
                 7.169 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.733 
                 7.527 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.797 
                 7.754 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.920 
                 7.884 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.929 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE V 
               
             
             
               
                   
               
               
                 Lune segment 205 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.812 
                 2.696 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.795 
                 4.583 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.227 
                 5.804 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.913 
                 6.624 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.772 
                 7.179 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.739 
                 7.535 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.799 
                 7.758 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.920 
                 7.886 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.930 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE VI 
               
             
             
               
                   
               
               
                 Lune segment 206 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.894 
                 2.686 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.855 
                 4.588 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.265 
                 5.816 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.936 
                 6.637 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.779 
                 7.186 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.740 
                 7.537 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.799 
                 7.758 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.920 
                 7.888 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.929 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE VII 
               
             
             
               
                   
               
               
                 Lune segment 207 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.933 
                 2.681 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.880 
                 4.590 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.260 
                 5.814 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.897 
                 6.615 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.754 
                 7.164 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.728 
                 7.521 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.795 
                 7.749 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.919 
                 7.881 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.928 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE VIII 
               
             
             
               
                   
               
               
                 Lune segment 208 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.378 
                 2.749 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.543 
                 4.560 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.076 
                 5.758 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.819 
                 6.572 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.721 
                 7.135 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.713 
                 7.501 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.788 
                 7.734 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.917 
                 7.873 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.925 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE IX 
               
             
             
               
                   
               
               
                 Lune segment 209 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.368 
                 2.750 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.506 
                 4.557 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.068 
                 5.756 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.819 
                 6.572 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.720 
                 7.134 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.713 
                 7.501 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.787 
                 7.733 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.917 
                 7.873 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.923 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE X 
               
             
             
               
                   
               
               
                 Lune segment 210 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.230 
                 2.767 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.522 
                 4.559 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.150 
                 5.781 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.822 
                 6.574 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.723 
                 7.137 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.713 
                 7.501 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.788 
                 7.736 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.917 
                 7.873 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.925 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XI 
               
             
             
               
                   
               
               
                 Lune segment 211 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.334 
                 2.754 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.506 
                 4.557 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.068 
                 5.756 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.814 
                 6.569 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.715 
                 7.130 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.710 
                 7.497 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.787 
                 7.733 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.917 
                 7.871 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.923 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XII 
               
             
             
               
                   
               
               
                 Lune segment 212 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.340 
                 2.754 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.506 
                 4.557 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.043 
                 5.748 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.807 
                 6.565 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.709 
                 7.125 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.707 
                 7.493 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.786 
                 7.730 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.916 
                 7.869 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.922 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XIII 
               
             
             
               
                   
               
               
                 Lune segment 213 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.339 
                 2.754 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.516 
                 4.558 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.043 
                 5.748 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.807 
                 6.565 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.713 
                 7.128 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.707 
                 7.493 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.787 
                 7.732 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.916 
                 7.869 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.922 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XIV 
               
             
             
               
                   
               
               
                 Lune segment 214 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.340 
                 2.754 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.514 
                 4.558 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.043 
                 5.748 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.807 
                 6.565 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.708 
                 7.124 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.707 
                 7.493 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.785 
                 7.729 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.916 
                 7.869 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.922 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XV 
               
             
             
               
                   
               
               
                 Lune segment 215 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.361 
                 2.751 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.516 
                 4.558 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.051 
                 5.750 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.807 
                 6.565 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.710 
                 7.126 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.707 
                 7.493 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.785 
                 7.729 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.916 
                 7.868 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.922 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XVI 
               
             
             
               
                   
               
               
                 Lune Segment 216 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.380 
                 2.749 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.528 
                 4.559 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.060 
                 5.753 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.808 
                 6.566 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.714 
                 7.129 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.707 
                 7.493 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.786 
                 7.731 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.916 
                 7.868 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.922 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XVII 
               
             
             
               
                   
               
               
                 Lune Segment 217 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.546 
                 2.728 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.605 
                 4.566 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.098 
                 5.765 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.832 
                 6.579 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.723 
                 7.137 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.713 
                 7.501 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.787 
                 7.733 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.917 
                 7.873 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.926 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XVIII 
               
             
             
               
                   
               
               
                 Lune Segment 218 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.983 
                 2.675 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.891 
                 4.591 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.249 
                 5.811 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.899 
                 6.616 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.755 
                 7.165 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.727 
                 7.520 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.794 
                 7.747 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.918 
                 7.878 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.927 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XIX 
               
             
             
               
                   
               
               
                 Lune Segment 219 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.993 
                 2.673 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.914 
                 4.593 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.298 
                 5.826 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.944 
                 6.641 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.779 
                 7.186 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.739 
                 7.536 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.798 
                 7.757 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.920 
                 7.884 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.929 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XX 
               
             
             
               
                   
               
               
                 Lune Segment 220 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.641 
                 2.717 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.693 
                 4.574 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.165 
                 5.785 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.875 
                 6.603 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.752 
                 7.162 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.729 
                 7.522 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.796 
                 7.751 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.919 
                 7.883 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.928 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
           
               
                 TABLE XXI 
               
             
             
               
                   
               
               
                 Lune Segment 221 
               
             
          
           
               
                   
                 X 
                 Y 
               
               
                   
                   
               
               
                   
                 11.328 
                 0.000 
               
               
                   
                 9.996 
                 2.673 
               
               
                   
                 9.107 
                 2.782 
               
               
                   
                 7.918 
                 4.593 
               
               
                   
                 7.394 
                 4.547 
               
               
                   
                 6.306 
                 5.828 
               
               
                   
                 5.977 
                 5.728 
               
               
                   
                 4.960 
                 6.650 
               
               
                   
                 4.758 
                 6.538 
               
               
                   
                 3.795 
                 7.199 
               
               
                   
                 3.665 
                 7.086 
               
               
                   
                 2.748 
                 7.548 
               
               
                   
                 2.681 
                 7.459 
               
               
                   
                 1.802 
                 7.765 
               
               
                   
                 1.776 
                 7.709 
               
               
                   
                 0.921 
                 7.890 
               
               
                   
                 0.914 
                 7.859 
               
               
                   
                 0.070 
                 7.934 
               
               
                   
                 0.000 
                 7.931 
               
               
                   
                   
               
             
          
         
       
     
     Referring now to FIG. 19A, a vertical candela trace is seen which is characteristic of the principal reflectors of the invention and particularly of the principal reflector  200  with the principal reflectors  22  and  190  approximating the vertical candela trace as seen in FIG.  19 A. Use of the principal reflector  22  and  190  with shielding devices such as the flux manager  42  and further with the reflector insert  82  causes said principal reflectors  22  and  190  to more closely approximate the vertical candela trace seen in FIG.  19 A. In the vertical candela trace of FIG. 19A, the bottom side of the beam is to the right, the candela distribution being arranged so that the maximum candela will occur at center beam. The vertical candela trace of FIG. 19A is essentially the same regardless of set back and mounting height assumptions and are essentially asymmetric with the majority of flux being directed below center beam. A very sharp, nearly linear cutoff occurs above center beam and an exponential behavior is exhibited between center beam and the lower extinction angle. A horizontal candela trace is seen in FIG.  19 B and illustrates that the linear behavior required on either side of the illuminance pattern results in a linear and symmetric illuminance trace with respect to horizontal angle. Differing set back and mounting height assumptions essentially result in distributions with similar occurrence with the beam being linear and symmetric even though maximum value differs as does angular extent from left to right. 
     The optics of the luminaire assemblies described herein are intended to produce a unique distribution of light characterised by a linear sloping to the front of the luminaire assembly and to the sides with each luminaire providing an illuminance distribution shaped as is seen in FIG. 20, a plurality of the luminaire assemblies of the invention in a cluster acting to produce essentially half of a flat cone with the distribution of FIG. 20 forming a section thereof which is perpendicular to the base of the cone which “halves” the cone with these distributions overlapping to some degree at edges thereof to produce the unique distribution of light provided by the present luminaire assemblies of the invention. It is to be understood relative to FIGS. 19A,  19 B and  20  that these figures define ideal distributions for all of the primary reflector assemblies of the invention. 
     While the invention has been described in light of explicit embodiments thereof, it is to be understood that the invention can be embodied other than as explicitly described and shown herein, the scope of the invention being defined by the recitations of the appended claims.