Patent Publication Number: US-10775030-B2

Title: Light fixture device including rotatable light modules

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The instant application claims priority under 35 U.S.C. § 119 to U.S. Provisional Application Ser. No. 62/502,026, the entire contents of which are incorporated herein by reference. 
    
    
     BACKGROUND 
     Technical Field 
     The present disclosure relates to lighting fixtures. More particularly, the present invention relates to a device for fixing a light to enable light to be directed in a custom manner. 
     Discussion of Related Art 
     Lighting, also referred to as artificial lights, are important in commercial and residential environments. Indoor lighting is critical for use of interior spaces during day and night. Outdoor lighting enables the use of outdoor spaces safely during periods of darkness. Lights can be expensive to install and operate. Light emitting diode (LED) lights can reduce the costs of installing and operating lights due to their long useful operating life and relatively low energy usage. 
     Large interior spaces require many lights to make them safe and useful. Overlapping light cones from adjacent light fixtures enable sets of lights to work together to create a bright and safe work area in a large interior space. Most light from lights designed for large interior spaces having high ceilings is directed downward since work is performed at floor level, and the overlapping light cones provide sufficient illumination toward the ceiling. 
     However, one problem with typical light fixtures designed for large interior spaces is that the edge of the space may not benefit from the overlapping light cones, particularly when the light fixtures hang down significantly from the ceiling. Therefore, a “cave effect” may occur, where an upper part of the wall may not be illuminated, or may be only dimly illuminated. Therefore, there is a need for a light fixture that eliminates the cave effect. 
     SUMMARY 
     Provided in accordance with the present disclosure is a device for directing light. The device includes at least two light modules adapted to provide a fixture for a light source. The at least two light modules are linear, parallel to a central axis, substantially in a plane with the central axis, and arranged on both sides of the central axis in the plane. A first inner endcap is provided that is arranged on a first end of the at least two light modules and a second inner endcap is provided that is arranged on a second end of the at least two light modules. The first end opposes the second end along a length of the two light modules. The first and second inner endcaps provide a fixed, rotational axis for at least one of the light modules, and provide at least two locking positions to determine a rotational position for the light module. 
     In an aspect of the present disclosure, the at least two locking positions include at least two detents on the first inner endcap. The at least two detents on the first inner endcap may be selectable by a pin adapted to engage one of the at least two detents. 
     In another aspect of the present disclosure, the at least two locking positions are four locking positions. The four locking positions may include four detents on the first inner endcap, and the four detents on the first inner end may be selectable by a tab adapted to engage one of the four detents. 
     In yet another aspect of the present disclosure, one of the first inner endcap and the second inner endcap may include a locking arrangement adapted to secure the rotational position of at least one of the light modules. 
     In another aspect of the present disclosure, the at least one light module is farthest from the central axis on a first side of the central axis and is designated a first outer light module. 
     In further aspects of the present disclosure, one other light module of the least two light modules is farthest from the central axis on a second side of the central axis and is designated a second outer light module. The two inner endcaps may provide another fixed, rotational axis for the second outer light module, and may provide two second locking positions to determine a second rotational position for the second outer light module. 
     The at least two light modules may be two light modules, may be four light modules, may be six light modules, or may be any number of light modules. 
     The at least two locking positions may be four locking positions determining the rotational position for the first outer light module. The other at least two second locking positions may be four second locking positions determining the second rotational position for the second outer light module. 
     A device according to aspects of the present disclosure may include a wireway positioned along the central axis. The wireway may be linear and may accommodate wiring. 
     A device according to further aspects of the present disclosure may include two outer endcaps arranged on opposing ends of the two light modules. The two outer endcaps may be mechanically coupled to the two inner endcaps and may provide a seal to inhibit ingress into an interior of the device. 
     In additional aspects of the present disclosure, the at least two light modules may be arranged in equal numbers on both sides of the central axis in the plane. 
     The present disclosure additionally provides a light fixture including at least two light modules adapted to provide a fixture for a light source. The at least two light modules are linear, parallel to a central axis, substantially in a plane with the central axis, and arranged on both sides of the central axis in the plane. A first inner endcap is arranged on an end of the light modules and a second inner endcap is arranged on a second end of the light modules. The first end opposes the second end along a length of the light modules. The first and second inner endcaps provide a fixed, rotational axis for at least one of the light modules, and provide locking positions to determine a rotational position for the light module. The locking positions include detents on the first inner endcap selectable by a pin adapted to engage one of the detents. 
     In an aspect of the present disclosure, one of the endcaps includes a locking arrangement adapted to secure the rotational position of the light module. 
     In another aspect of the present disclosure, the at least one light module is farthest from the central axis on a first side of the central axis and is designated a first outer light module. At least one other light module is farthest from the central axis on a second side of the central axis and is designated a second outer light module. The two inner endcaps provide another fixed, rotational axis for the second outer light module, and provide at least two further locking positions to determine a second rotational position for the second outer light module. 
     In yet another aspect of the present disclosure, four locking positions determine the rotational position for the first outer light module, and four further locking positions determine the second rotational position for the second outer light module. 
     In still further aspects of the present disclosure, a wireway is positioned along the central axis. The wireway is linear and accommodates wiring. 
     In another aspect of the present disclosure, two outer endcaps are arranged on opposing ends of the at least two light modules. The two outer endcaps may be mechanically coupled to the two inner endcaps and may provide a seal to inhibit ingress into an interior of the device. 
     Further, to the extent consistent, any of the aspects described herein may be used in conjunction with any or all of the other aspects described herein. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Various aspects and features of the present disclosure are described herein below with references to the drawings. 
         FIG. 1  is a perspective view of an exemplary embodiment of a light fixture according to the present technology. 
         FIG. 2  is an exploded view of an exemplary embodiment of a light fixture according to the present technology. 
         FIGS. 3A-3D  are diagrams illustrating an inner endcap and outer light modules illustrating different rotation positions for the outer light modules according to an exemplary embodiment of the present technology. 
         FIGS. 4A-4B  are diagrams illustrating an end view and a plan view of a light fixture according to the present technology having four light modules. 
         FIGS. 4C-4D  are diagrams illustrating an end view and a plan view of a light fixture according to the present technology having six light modules. 
         FIG. 5A  is a diagram illustrating an exploded view of a light module according to an exemplary embodiment of the present technology. 
         FIG. 5B  is a partial, perspective view of an inner endcap, shown in a semi-transparent condition, and a light module end illustrating a rotation functionality for the light module according to an exemplary embodiment of the present technology. 
         FIG. 6A  is a diagram illustrating a wire guard according to an exemplary embodiment of the present technology. 
         FIG. 6B  is a diagram illustrating an alternative wire guard according to an exemplary embodiment of the present technology. 
         FIG. 6C  is a cross-sectional view of a lens according to one embodiment of the present disclosure; 
         FIG. 6C  is a cross-sectional view of a lens according to one embodiment of the present disclosure; 
         FIG. 6D  is a cross-sectional view of an alternative lens according to one embodiment of the present disclosure; 
         FIG. 6E  is a partial cross-sectional view along a rotational axis of a light fixture having three light modules on one side of a wireway, and illustrating the light module having a rotation functionality according to an exemplary embodiment of the present technology. 
         FIG. 6F  is a partial perspective view of a rotation selector and an endcap illustrating the light module having a rotation functionality according to an exemplary embodiment of the present technology. 
         FIGS. 6G-L  depict views of an alternative rotation selector according to an exemplary embodiment of the present technology. 
         FIG. 6M  is an end view of an alternative light module in accordance with an embodiment of the present technology. 
         FIG. 7  is a flow chart illustrating an exemplary method according to an exemplary embodiment of the present technology. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure is directed, in part, to devices and methods for providing artificial light. In particular, the present technology addresses problems associated with conventional lighting of interior and exterior spaces. Light modules (also referred to as light fixtures, fixtures, or modules) are provided having mounts that include rotatable outer light modules. In this manner, a custom light cone can be set providing different light distributions. For example, when lighting areas above the fixture to eliminate the “cave effect”, the outer light modules may be aimed upwards to light these areas. Light modules may also include a light-emitting diode (LED) pattern on a printed circuit board (PCB), thermally conductive tape, and/or an aluminum heatsink. 
     The rotatable outer light modules include a module locking mechanism that is designed to set the rotation angles conveniently and safely lock the modules in place. The locking mechanism may include a rotation selector, also referred to as a lock. The rotation selector may engage with a selector detent, also referred to as a detent or a hole, to determine a rotational position for a light module. 
     In alternative exemplary embodiments, only one outer light module may be rotatable, modules other than the outer light modules may be rotatable, and in some exemplary embodiments, all of the light modules are rotatable. 
     The rotatable outer light modules may be adjustable before, during, or after installation. Adjustment of the rotatable outer light modules may be accomplished by first loosening screws on the outermost modules with a hex driver. However, in other exemplary embodiments, no locking screws may be included in the outer light module. The next step in the adjustment process is to locate the locks at the ends of the outermost modules, and then pull and hold the lock. At this point, the outer light module may be rotated to the next detent, or another detent, and the lock released. The lock may snap in place. In exemplary embodiments including screws for locking the module rotation, the next step is to tighten the screws to lock the modules at the set angles. 
     Modular wire guards may be provided that include steel wire guards for protecting the lenses. The module wire guards may be designed to protect only one module each, and in this manner, the modular design may be used to fit any number of modules. In this manner, the same wire guard may be used in light fixtures having two, four, six, or any number of light modules per fixture. 
     Light modules according to the present technology may include a heatsink designed for LED modules that includes a custom, optimized aluminum extruded heatsink to efficiently cool LEDs using natural convection. 
     Light modules according to the present technology may also include a custom extruded plastic lenses with engineered optics to provide maximum light transmission and provide various types of light distribution (for example, wide and aisle distributions). 
     Light fixtures according to the present technology may include an LED pattern on a PCB. One design adapted for use with the present technology includes  144  LEDs in series and/or parallel strings. 
     The disclosure is further directed to a wireway in the light fixtures, which may be extruded aluminum and/or may be used as a housing and/or a heatsink for the LED drivers. 
     Embodiments of the present disclosure are now described in detail with reference to the drawings in which like reference numerals designate identical or corresponding elements in each of the several views. Additionally, in the drawings and in the description that follows, terms such as front, rear, upper, lower, top, bottom, and similar directional terms are used simply for convenience of description and are not intended to limit the disclosure. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail. 
     With reference to  FIG. 1 , light fixture  100  is shown in a perspective view. Light fixture  100  includes light modules  110 . As shown in  FIG. 1 , light fixture  100  includes six light modules, each being linear and with three light modules arranged on one side of wireway  120 , and three light modules arranged on the other side of wireway  120 . Alternatively, light fixture  100  may include two or four light modules, or more, which may be arranged in equal numbers on either side of wireway  120 . In still further exemplary embodiments, the number of light modules may not be evenly divided on either side of wireway  120 , and light fixture  100  may include an odd number of light modules. Light modules  110  include a first outer light module  130 , which is positioned farthest from wireway  120 . Additionally, a second outer light module  135  may be positioned on an opposite side of wireway  120  from the first outer light module  130 , and farthest from wireway  120  on that side. The first outer light module  130 , and/or the second outer light module  135 , may rotate according to the present technology to provide a custom light cone useful for eliminating an edge effect in a large interior illuminated space. Arranged on opposing ends of light modules  110  and wireway  120  are first endcap  140  and second endcap  145 . Light modules  110  in light fixture  100  may include or may be provided with, wire guards  150  to protect lights and or lenses of the light modules from impacts without excessively impairing the illumination provided by the light modules. As shown in  FIG. 1 , wire guard  150  is a modular wire guard arranged on outer light module  135 , and each module  110  has a separate wire guard  150 . 
       FIG. 2  is an exploded view of light fixture  200  according to the present technology. Light fixture  200  includes two light modules, namely first outer light module  210  and second outer light module  220 . Wireway  120  is shown in  FIG. 2  disassembled into upper wireway section  230  and lower wireway section  240 . Upper wireway section  230  and lower wireway section  240  may combine to form wireway  120 , including an interior space to accommodate wires and/or drivers for powering LED lights in first outer light module  210  and second outer light module  220 . Wireway  120  may also function as a heatsink for the LED drivers. Wireway  120  may permit direct access to electrical components housed therein upon removal of lower wireway section  240  from the upper wireway section  230 . 
     First endcap  140  is shown in  FIG. 2  disassembled into first inner endcap  250  and first outer endcap  260 . Second endcap  145  is also shown in  FIG. 2  disassembled into second inner endcap  255  and second outer endcap  265 . First inner endcap  250  and second inner endcap  255  may attach to, or alternatively, function as mounting plates for, opposite ends of first outer light module  210 , second outer light module  220 , and wireway  120 . In this manner, the relative distances and directions between first outer light module  210 , second outer light module  220 , and wireway  120  with respect to each other may be fixed. 
     First outer light module  210  may be rotatable along an axis extending from first inner endcap  250  to second inner endcap  255 , through first outer light module  210 . Additionally or alternatively, second outer light module  220  may be rotatable along an axis extending from first inner endcap  250  to second inner endcap  255 , through second outer light module  220 . First outer light module  210  may include first rotation selector  215  on one end adjacent to second inner endcap  255 . 
     Additionally or alternatively, first outer light module  210  may have a rotation selector at the other end, or both ends. First rotation selector  215  may enable first outer light module  210  to be positioned in one of four pre-set angles, for example 0 degrees, 45 degrees, 90 degrees, and 135 degrees. Alternatively, more or fewer pre-set angles may be selectable by first rotation selector  215 . 
     Second outer light module  220  may include second rotation selector  225  on one end. Additionally or alternatively, second outer light module  220  may have a rotation selector at the other end, or both ends. Second rotation selector  225  may enable second outer light module  220  to be positioned in one of four pre-set angles, for example 0 degrees, 45 degrees, 90 degrees, and 135 degrees. Alternatively, more or fewer pre-set angles may be selectable by second rotation selector  225 . 
     First outer endcap  260  and second outer endcap  265  may be composed of plastic or any other appropriate material, and may provide an aesthetic appearance and/or operate to protect the wiring of the module assemblies. First locking arrangement  270  for first outer light module  210  is shown on first outer endcap  260 , and second locking arrangement  275  for second outer light module  220  is also shown on first outer endcap  260 . First and second locking arrangements  270 ,  275  may include screws adapted to engage first and second outer light modules  210 ,  220 , respectively. Alternatively, any appropriate locking arrangement may be used. The position of first locking arrangement  270  may correspond to the point of intersection for the rotational axis of first outer light module  210  and first outer endcap  260 . The position of second locking arrangement  275  may correspond to the point of intersection for the rotational axis of second outer light module  220  and first outer endcap  260 . 
       FIGS. 3A-3D  are diagrams illustrating second inner endcap  255 , first outer light module  210  and second outer light module  220  in different rotational positions. In particular,  FIGS. 3A-3D  are cross-sectional views of a light fixture according to the present disclosure, viewed from an interior in the direction of second inner endcap  255 . In each of  FIGS. 3A-3D , first outer light module  210  and second outer light module  220  are both in the same rotational position. Alternatively, first outer light module  210  and second outer light module  220  may be positioned in rotational positions different from each other, and/or only one of first outer light module  210  and second outer light module  220  may be rotatable. 
       FIG. 3A  illustrates first outer light module  210  and second outer light module  220  in a default rotational position with respect to second inner endcap  255 , with lens  340  of first outer light module  210  directed downwards. This default position may be referred to as the first position, 0 degrees, or 0 degrees down. In this position, light emitted from first outer light module  210  may be directed downwards. The rotational position of first outer light module  210  may be selected using first rotation selector  215 , which may engage with first detent  332  (shown in  FIG. 3B ) of selector detents  330  on second inner endcap  255 . The rotational position of second outer light module  220  may be selected using second rotation selector  225 . 
     Wireslot  320  may allow wires connecting to first outer light module  210  to move through a range of rotation of first outer light module  210 , so that the lighting function of first outer light module  210  is not impaired by rotation through the range. The wireslot  320  may also act as an end stop and prevent rotation of the light module  210  beyond the desired end of the wireslot  320 . 
       FIG. 3B  illustrates first outer light module  210  and second outer light module  220  in a second rotational position with respect to second inner endcap  255 , with lens  340  of first outer light module  210  directed downwards and slightly outwards. This second position may also be referred to as 45 degrees or 45 degrees out. Additionally, this second position may be at any appropriate angle other than 45 degrees. In this position, light emitted from first outer light module  210  may be directed down and outwards. The rotational position of first outer light module  210  may be selected using first rotation selector  215 , which may engage with second detent  334  (shown in  FIG. 3C ) of selector detents  330  on second inner endcap  255 . First detent  332  of selector detents  330  is shown in  FIG. 3B , and corresponds to the default position. Therefore, first detent  332  is selected by first rotation selector  215  for the rotational position shown in  FIG. 3A . The rotational position of second outer light module  220  may be selected using second rotation selector  225 . Also shown in  FIG. 3B  is wireslot  320 . 
       FIG. 3C  illustrates first outer light module  210  and second outer light module  220  in a third rotational position with respect to second inner endcap  255 , with lens  340  of first outer light module  210  directed outwards. This third position may also be referred to as 90 degrees or 90 degrees out. Additionally, this third position may be at any appropriate angle other than 90 degrees. In this position, light emitted from first outer light module  210  may be directed outwards. The rotational position of first outer light module  210  may be selected using first rotation selector  215 , which may engage with third detent  336  (shown in  FIG. 3D ) on second inner endcap  255 . Second detent  334  of selector detents  330  is shown in  FIG. 3C , and corresponds to the second position. Therefore, second detent  334  is selected by first rotation selector  215  for the rotational position shown in  FIG. 3B . Fourth detent  338  of selector detents  330  is shown in  FIG. 3C , and corresponds to the fourth position, to be discussed in regard to  FIG. 3D . Therefore, fourth detent  338  is selected by first rotation selector  215  for the rotational position shown in  FIG. 3D . The rotational position of second outer light module  220  may be selected using second rotation selector  225 . Also shown in  FIG. 3C  is wireslot  320 . 
       FIG. 3D  illustrates first outer light module  210  and second outer light module  220  in a fourth rotational position with respect to second inner endcap  255 , with lens  340  of first outer light module  210  directed outwards and slightly upwards. This fourth position may also be referred to as up, 135 degrees, or 135 degrees up. Additionally, this fourth position may be at any appropriate angle other than 135 degrees. In this position, light emitted from first outer light module  210  may be directed outwards and upwards. The rotational position of first outer light module  210  may be selected using first rotation selector  215 , which may engage with fourth detent  338  (shown in  FIG. 3C ) on second inner endcap  255 . Third detent  336  of selector detents  330  is shown in  FIG. 3D , and corresponds to the third position. Therefore, third detent  336  is selected by first rotation selector  215  for the rotational position shown in  FIG. 3C . The rotational position of second outer light module  220  may be selected using second rotation selector  225 . Also shown in  FIG. 3D  is wireslot  320 . 
       FIG. 4A  is an end view of light fixture  400  having four light modules according to the present technology.  FIG. 4A  shows first four-module outer endcap  410 . Centrally located in first four-module outer endcap  410  is first central axis endpoint  412 , which identifies a central axis of first four-module outer endcap  410 , and which corresponds to the endpoint of a wireway for first four-module outer endcap  410 . Also shown in  FIG. 4A  is rotational axis endpoint  414  for one of the outer modules of first four-module outer endcap  410 , which identifies the endpoint of a rotation axis for first four-module outer endcap  410 . Rotational axis endpoint  414  also may correspond to the position for an arrangement to secure first outer light module  210  to second inner endcap  255 , and/or the position for a locking arrangement, for example a screw, hex bolt, or any other appropriate locking system. 
       FIG. 4B  is a plan view of light fixture  400 , including four long light modules  420 . Two of the four long light modules  420  are arranged on one side of wireway  430 , and the other two of the four long light modules  420  are arranged on the other side of wireway  430 . The four long light modules  420  and wireway  430  extend from first four-module outer endcap  410  to second four-module outer endcap  415 . The relative length of light fixture  400  shown in  FIG. 4B  is for illustration purposes only, and in alternative exemplary embodiments, light fixture  400  may be shorter or longer as measured by the distance between first four-module outer endcap  410  and second four-module outer endcap  415 . 
       FIG. 4C  is an end view of light fixture  440  having six light modules according to the present technology.  FIG. 4A  shows first six-module outer endcap  450 . Centrally located in first six-module outer endcap  450  is first central axis endpoint  452 , which identifies a central axis of first six-module outer endcap  450 , and which corresponds to the endpoint of a wireway for first six-module outer endcap  450 . Also shown in  FIG. 4C  is rotational axis endpoint  454  for one of the outer modules of first six-module outer endcap  450 , which identifies the endpoint of a rotation axis for first six-module outer endcap  450 . 
       FIG. 4D  is a plan view of light fixture  440 , including six long light modules  460 . Three of the six long light modules  460  are arranged on one side of wireway  430 , and the other three of the six long light modules  460  are arranged on the other side of wireway  430 . The six long light modules  440  and wireway  430  extend from first six-module outer endcap  450  to second six-module outer endcap  455 . The length of light fixture  440  shown in  FIG. 4D  is for illustration purposes only, and in alternative exemplary embodiments, light fixture  440  may be shorter or longer. 
       FIG. 5A  is a diagram illustrating an exploded view of light module  210  according to an exemplary embodiment of the present technology. Shown in  FIG. 5A  is heatsink  500 , which may be formed by extruding aluminum. A thermal tape  510 , which may be thermally conductive adhesive tape used to attach PCB assembly  520  to heatsink  500 . In alternative exemplary embodiments, thermal tape  510  may not be used, and PCB assembly  520  may be attached to heatsink  500  by any appropriate method such as screws, rivets, and other mechanical fasteners. PCB assembly  520  may include LEDs and connectors on a printed circuit board. At an end of PCB assembly  520  may be positioned connector cover  530 , which may be a flame retardant cover for a connector on PCB assembly  520 . Covering the length of PCB assembly  520  may be lens  540 , which may be an extruded plastic lens, or a lens made of any other appropriate material. As shown the heatsink  500  may include two recesses  505  for receiving portions of lens  540 . 
       FIG. 5B  is a partial, perspective view of second inner endcap  255  shown in a semi-transparent condition. Also shown in  FIG. 5B  is first outer light module  210  having first rotation selector  215  arranged at an end adjacent to second inner endcap  255 . Shown on second inner endcap  255  in  FIG. 5B  are second detent  334 , third detent  336 , fourth detent  338 , and wireslot  320 . In  FIG. 5B , pin  550  engages a first detent to position the light module in a downward directed manner, also referred to as 0 degrees and 0 degrees down. Pin  550  may be disengaged from the first detent and moved to any of second detent  334 , third detent  336 , and fourth detent  338  by engaging a tab or pull on first rotation selector  215  to retract pin  550  from the first detent and rotating the light module manually about rotational axis endpoint  560 . Rotational axis endpoint  560  also may correspond to the position for an arrangement to secure first outer light module  210  to second inner endcap  255 , and/or the position for a locking arrangement, for example a screw, hex bolt, or any other appropriate locking system. 
       FIGS. 6A and 6B  illustrate different forms of wire guard  150  according to an exemplary embodiments of the present technology. Wire guard  150  may be formed from metal, or any other impact and heat resistant material, and may include two or more main wire rods along a length, with small transverse wire rods spanning a distance between the length-wise wire rods. In still further exemplary embodiments, two length-wise wire rods may be positioned on each side of the wire guard  150 . Wire guard  150  may attach to a light module by snapping onto a lens, coupling to a cover, or by any other appropriate method. Wire guard  150  may operate to protect lenses from impact strikes. Light fixtures may be shipped with several wire guards  150  installed during assembly, and wire guard  150  may be available in multiple sizes, for instance multiple lengths, including a short and long length to match the light module length. Wire guard  150  may protect both rotatable and non-rotatable light modules, and therefore, one type of wire guard may be used for light fixtures having two, four, six, or any number of light modules. 
       FIGS. 6C and 6D  are end views of lens  540 . The lenses  540  are shaped with tangs  545  which are received in recesses  505  of the heatsink  500 . Diffusers  565  formed on an inner surface of the lenses as shown in  FIG. 6C  can help shape the projected light. Similarly differences in opacity or other features included on the lenses  540  can be employed to reduce glare, filter certain light wavelengths, or focus light in a particular direction. The spring constant of the polymeric material from which the lenses  540  are formed can be used to ensure that the lenses  540  remain in the recesses. The lenses  540  may be covered with the wire guards  150  depicted in  FIGS. 6A and 6B . 
       FIG. 6E  is a partial cross-sectional view along a rotational axis of light fixture  100  having three light modules on one side of wireway  120 . Light fixture  100  includes cover  600 , which may be made of plastic or any other appropriate material. Two light modules  610  and  620  may includes lenses and may be positioned immediately adjacent to wireway  120 , and may not be rotatable, i.e., may be fixed. First outer light module  130  may be positioned farthest from wireway  120 , and may be rotatable in order to provide custom illumination options. First outer light module  130  may include lens  340 , which may be protected by wire guard  150 . Wire guard  150  may attach to cover  600 , or in alternative exemplary embodiments, may attach to lens  340  or another part of first outer light module  130 . First outer light module  130  may be rotatable using selector detents  330 . In  FIG. 6B , first outer light module  130  is directed downward, also referred to as 0 degrees and 0 degrees down. 
       FIG. 6F  is a partial perspective view of first rotation selector  215  and second endcap  145 . First rotation selector  215  is mounted on an end of first outer light module  210  adjacent to second endcap  145 . First rotation selector  215  may be mounted on first outer light module  210  by screws  630 , or by any other appropriate attachment method. First rotation selector  215  includes tab  552 , which may be a spring activator for a pin to engage selector detents when positioning first outer light module  210 . By pulling tab  552  in a direction away from second endcap  145 , a pin  550  attached to tab  552  may be disengaged from a selector detent  330 ,  334 ,  336 , or  338 , and first outer light module  210  may be manually rotated into a different position in which the pin  550  can engage with a different selector detent  330 ,  334 ,  336 , or  338 . 
       FIGS. 6G-6L  depict a further embodiment of the present disclosure, a rotation selector  215  having a different locking mechanism and a simplified design to that depicted in  FIG. 6F . Instead of a pin  550  engaging selector detents (e.g.,  330 ,  340 ,  350 ) a compressible clam shell  554  is provided and is insertable into the selector detent  330 ,  334 ,  336 , or  338  to position the first outer light module  210 . In this embodiment the clam shell  554  compresses to enter into the selector detent and can be re-compressed if a different selector detent  330 ,  334 ,  336 ,  338  is desired. A channel  556  extends from the flange  558  of the rotation selector  215 . The channel  556  is shaped to receive the light module  220 , and the entire rotation selector can slide on the light module to allow for removal of the rotation selector, and specifically the clam shell  554  from the detent to free the clam shell  554  for rotation of the light module  220  relative to the end cap. In the embodiment of  FIGS. 6G-L  the rotation selector  215  is prevented from rotating relative to the light module  220  by slots  559  formed in the flange  558 . These slots  559  mate with fins formed in the light module  220  that assist in heat dissipation. An example of such a light module  220  can be seen in  FIG. 6M . The fins  221  are sized to be received within the slots  550  of the rotation selector  215 . Other features of the light module  220  are consistent with those described herein above. 
       FIG. 7  is a flow chart illustrating exemplary method  700  according to an exemplary embodiment of the present technology, in which optional steps are shown with broken lines. Method  700  begins at start circle  710  and proceeds to operation  720 , which indicates to provide light modules adapted to provide a fixture for a light source, the light modules being linear, parallel to a central axis, substantially in a plane, and arranged on both sides of the central axis in the plane. From operation  720 , the flow in method  700  proceeds to operation  730 , which indicates to provide inner endcaps arranged on ends of the light modules along a length of the light modules, the inner endcaps providing a fixed, rotational axis for at least one of the light modules. From operation  730 , the flow proceeds to operation  740 , which indicates to determine a rotational position for the at least one light module using one of at least two locking positions. From operation  740 , the flow in method  700  proceeds to optional operation  750 , which indicates to lock the rotational position of the light module using a screw arranged on one of the inner endcaps. From optional operation  750 , the flow in method  700  proceeds to end circle  760 . 
     Detailed embodiments of such devices, systems incorporating such devices, and methods using the same are described above. However, these detailed embodiments are merely examples of the disclosure, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting but merely as a basis for the claims and as a representative basis for allowing one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure. The scope of the technology should therefore be determined with reference to the appended claims along with their full scope of equivalents.