WO2014120671A1 - Consolidated troffer - Google Patents
Consolidated troffer Download PDFInfo
- Publication number
- WO2014120671A1 WO2014120671A1 PCT/US2014/013400 US2014013400W WO2014120671A1 WO 2014120671 A1 WO2014120671 A1 WO 2014120671A1 US 2014013400 W US2014013400 W US 2014013400W WO 2014120671 A1 WO2014120671 A1 WO 2014120671A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lighting system
- reflective surface
- light source
- light
- reflector
- Prior art date
Links
- 230000004888 barrier function Effects 0.000 claims abstract description 42
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000003760 hair shine Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000004313 glare Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- This invention pertains to a lighting system and, in particular, for a light emitting diode (LED) lighting system.
- LED light emitting diode
- Lighting systems have traditionally involved the use of incandescent or fluorescent lighting. Recent advances in the use of light emitting diodes has, however, resulted in greater use of LEDs for not only display and accent lighting but interior lighting as well. With the use of LEDs comes the problem of how to disperse the concentrated light ray of the LED so as to create a more uniform and comfortable lighting environment. In addition to developing ways to disperse the LED lighting, there is also a need to improve lighting systems for use with a dropped ceiling in order to meet regulatory restrictions that deal with dropped-ceiling mounted luminaires.
- a lighting system that includes a support element having a reflective surface, a luminaire mounted on the support element, said luminaire including an LED light source that provides light in a first pattern, and a waveguide redirection element that receives the light from the LED light source and redirects the light into a second pattern onto the reflective surface, wherein the reflective surface occupies a first area, the LED light source occupies a second area, and the first area is greater than the second area.
- a lighting system that includes a reflective surface having an edge, an LED light engine comprising at least one LED and a waveguide that receives the light generated from said at least one LED and directs the light from an emission surface towards the reflective surface, the LED light engine being adjacent to the reflective surface, and the emission surface being spaced from the reflective surface and adapted to direct light uniformly across at least a portion of the surface of the reflective surface laterally spaced from said LED light engine at an incident angle of no greater than about 10 degrees from the emission surface to the edge of the reflective surface.
- a lighting system kit that includes a support element having a reflective surface, and an LED light engine mounted on the support element including an LED light source that provides light in a first pattern, and a waveguide element that receives the light from the LED light source and redirects the light into a second pattern onto a portion of the reflective surface laterally spaced from the waveguide element.
- a dropped-ceiling lighting system comprised of a reflector positioned in an opening in a grid used to suspend a dropped ceiling, a lighting device mounted adjacent to the reflector.
- the lighting device includes a light source that provides light in a first pattern, and a redirection element that receives the light from the LED light source and redirects the light into a second pattern onto the reflector.
- a structural support secures the lighting device to the grid, and a power source for the lighting device.
- a dropped-ceiling lighting system comprised of a reflector attached to a plenum barrier positioned in an opening in a grid used to suspend a dropped ceiling, a power source extends from a first edge of the plenum barrier to a second edge of the plenum barrier, and a lighting device that includes a light source is mounted to the power source, where said light source provides light in a first pattern, and a redirection element that receives the light from the LED light source and redirects the light into a second pattern onto the reflector.
- Figure 1 A is an isometric view showing a top side of an embodiment of a dropped- ceiling lighting system.
- Figure IB is an isometric view showing a bottom side view of an embodiment of a dropped-ceiling lighting system.
- Figure 1C is a side view of an embodiment of a dropped-ceiling lighting system.
- Figure ID is a sectional view of a plenum barrier showing an embodiment of a dropped-ceiling lighting system with a lighting device positioned in the barrier and having a light source oriented in a position away from the reflector.
- Figure 2A is an isometric view showing a top side of a second embodiment of a dropped-ceiling lighting system.
- Figure 2B is an isometric view showing a bottom side of a second embodiment of a dropped-ceiling lighting system.
- Figure 2C is a side view of a second embodiment of a dropped-ceiling lighting system.
- Figure 2D is a sectional view of a plenum barrier showing a second embodiment of a dropped-ceiling lighting system with a lighting device positioned in the barrier and having a light source oriented in a position parallel to the reflector.
- Figure 3A is an isometric view showing a top side of another embodiment of a dropped-ceiling lighting system.
- Figure 3B is an isometric view showing a bottom side view of another embodiment of a dropped-ceiling lighting system having a waveguide adjacent to the light source.
- Figure 3C is a side view of another embodiment of a dropped-ceiling lighting system having a waveguide adjacent to the light source.
- Figure 3D is a sectional view of a plenum barrier showing another embodiment of a dropped-ceiling lighting system with a lighting device positioned in the barrier and having a light source adjacent to a waveguide and oriented in a position away from the reflector.
- Figure 3E is an enlarged view of the area identified by line 3E in Figure 3D.
- Figure 3F is a sectional view showing a light source oriented downward from the reflector and a portion of the waveguide.
- Figure 4A is an isometric view showing a top side of another embodiment of a dropped-ceiling lighting system.
- Figure 4B is an isometric view showing a bottom side view of another embodiment of a dropped-ceiling lighting system having a waveguide adjacent to the light source.
- Figure 4C is a side view of another embodiment of a dropped-ceiling lighting system having a waveguide adjacent to the light source.
- Figure 4D is a sectional view of a plenum barrier showing another embodiment of a dropped-ceiling lighting system with a lighting device positioned in the barrier and having a light source adjacent to a waveguide and oriented in a position away from the reflector.
- Figure 4E is an enlarged view of the area identified by line 4E in Figure 4D.
- Figure 4F is a sectional view showing a light source oriented downward from the reflector and a portion of the waveguide.
- Figure 5A is an isometric view showing a top side of another embodiment of a dropped-ceiling lighting system.
- Figure 5B is an isometric view showing a bottom side view of another embodiment of a dropped-ceiling lighting system.
- Figure 5C is a side view of another embodiment of a dropped-ceiling lighting system.
- Figure 5D is a sectional view of a plenum barrier showing another embodiment of a dropped-ceiling lighting system with a lighting device positioned in the barrier and having a light source adjacent to a waveguide and oriented in a direction parallel to the reflector
- Figure 6A is an isometric view showing a top side of an embodiment of a dropped- ceiling lighting system.
- Figure 6B is an isometric view showing a bottom side view of an embodiment of a dropped-ceiling lighting system.
- Figure 6C is a side view of an embodiment of a dropped-ceiling lighting system.
- Figure 6D is a sectional view of a plenum barrier showing an embodiment of a dropped-ceiling lighting system with a lighting device positioned in the barrier and having a light source oriented in a position away from the reflector.
- Figure 7 A is an isometric view showing a top side of an embodiment of a dropped- ceiling lighting system.
- Figure 7B is an isometric view showing a bottom side view of an embodiment of a dropped-ceiling lighting system.
- Figure 7C is a side view of an embodiment of a dropped-ceiling lighting system.
- Figure 7D is a sectional view of a plenum barrier showing an embodiment of a dropped-ceiling lighting system with a lighting device positioned in the barrier and having a light source oriented in a position toward the reflector.
- Figure 8A is an isometric view showing a top side of an embodiment of a dropped- ceiling lighting system.
- Figure 8B is an isometric view showing a bottom side view of an embodiment of a dropped-ceiling lighting system having a linear power source and a waveguide adjacent to the light source.
- Figure 8C is a sectional view of a plenum barrier showing another embodiment of a dropped-ceiling lighting system with a lighting device positioned along the bottom side of the barrier and having a light source adjacent to a waveguide and oriented in a position away from the reflector.
- Figure 8D is a side view of an embodiment of a dropped-ceiling lighting system.
- Figure 8E is a cross-section of the lighting device shown in Figure 8B.
- Figure 9A is an isometric view showing a top side of a dropped-ceiling.
- Figure 9B is an isometric showing a bottom side view of an embodiment of a dropped-ceiling lighting system secured to a portion of a ceiling grid between two tiles or plenum barriers.
- Figure 9C is a side view of an embodiment of a dropped-ceiling lighting system secured to a portion of a ceiling grid.
- Figure 9D is a bottom view of an embodiment of a dropped-ceiling lighting system with a lighting device secured to a portion of a ceiling grid.
- Figure 10A is an isometric view showing a top side of a dropped-ceiling.
- Figure 10B is an isometric showing a bottom side view of an embodiment of a dropped-ceiling lighting system secured to a portion of a ceiling grid between two tiles or plenum barriers.
- Figure 11A is an isometric view showing a top view of a dropped-ceiling and an embodiment of a dropped-ceiling lighting system.
- Figure 1 IB is an isometric showing a bottom view of an embodiment of a dropped- ceiling lighting system
- Figure 11C is a side view of an embodiment of a dropped-ceiling lighting system.
- Figure 1 ID is a bottom view of an embodiment of a dropped-ceiling lighting.
- Figure 12A is a partial view showing an embodiment of a waveguide and the extrusions on the waveguide.
- Figure 12B is a partial view showing another embodiment of a waveguide and the extrusions on the waveguide.
- Figure 12C is a partial view showing yet another embodiment of a waveguide and the extrusions on the waveguide.
- Figure 12D is a partial view showing another embodiment of a waveguide and the extrusions on the waveguide.
- Figure 13A shows the light distribution resulting from an embodiment utilizing a radial design of a lighting fixture.
- Figure 13B shows the light distribution resulting from a second embodiment utilizing a radial design of a lighting fixture.
- Figure 13C shows the light distribution resulting from still another embodiment utilizing a radial design of a lighting fixture.
- Figure 13D shows the light distribution resulting from an embodiment utilizing a linear design of a light fixture.
- Figure 13E shows the light distribution resulting from a second embodiment utilizing another linear design of a light fixture.
- FIGS 1-13E disclosed is a lighting system 10 comprised of a support element 21 having a reflective surface 12 and a luminaire 18 mounted on the support element 21.
- the luminaire 18 includes a light emitting diode (“LED”) light source 24 that provides light in a first pattern, and a redirection element 26 that receives the light from the LED light source 24 and redirects the light into a second pattern onto the reflective surface 12, wherein the reflective surface 12 occupies a first area, the LED light source 24 occupies a second area, and the first area is greater than the second area, as shown in Figures 13A-13E.
- LED light emitting diode
- the first area occupied by the reflective surface 12 is about 46 times greater than the second area occupied by the LED light source 24.
- the LED light source 24 occupies an area approximately 4 inches in diameter.
- the LED light source 24 is positioned to direct incident light initially downward with respect to the reflective surface 12. In another embodiment, the LED light source 24 directs incident light initially in an upward direction relative to the reflective surface 12, while in still another embodiment, the LED light source 24 directs incident light initially at an angle of about 90° with respect to the reflective surface 12. In one embodiment, the light source 24 may emit light in a circular pattern, while in a second embodiment, the light source 24 emits light in a linear pattern.
- the light is emitted from the light source 24 and is reflected from the reflector 12 in a luminance per unit maximum to minimum ratio of about 1 :1 to about 3:1 over the surface of the reflector 12. In another embodiment, the light is reflected from the reflector 12 in a ratio of about 1.5: 1 to about 2.5:1. In a more particular embodiment, the light is reflected from the reflector in a ratio of about 2.0 to about 1.0.
- the reflective surface 12 is diffuse. It may also be on a ceiling.
- the reflective surface 12 may be smooth or textured depending upon how one wants to control how light redirects off the reflective surface 12 and into space.
- a lighting system 10 comprising a reflective surface 12, an LED light engine 18 comprising at least one LED 24 and a waveguide 30 that receives the light generated from said at least one LED 24 and directs the light from an emission surface 31 towards the reflective surface 12, as shown in, for example, Figures 1C, 2C, 12A and 12D.
- the LED light engine 18 is adjacent to the reflective surface 12, while the emission surface 31 is spaced from said reflective surface 12 and adapted to direct light uniformly across at least a portion of the reflective surface 12 laterally spaced from said LED light engine 18 at an incident angle of no greater than about 10° from the emission surface 31 to the end of the reflective surface 12.
- the incident angle is less than about 8°, while is still another embodiment, the incident angle is between about 3° and about 8°. In a more particular embodiment, the incident angle is about 5°. Similar incident angles may occur in an embodiment using a reflective optical assembly as opposed to a waveguide 30 as a redirection element 26, as discussed below.
- the reflective surface 12 may be diffuse. It may also be designed to shine light down into an area to be illuminated.
- the reflective surface 12 may be smooth or textured depending upon how one wants to control how light redirects off the reflective surface 12 and into space. While the reflective surface 12 is designed to shine light into an area, the distribution of the light may be changed by changing the specularity versus diffusion of the reflective surface 12, and by adding textured surfaces onto the reflective surface 12. In addition to controlling how light illuminates a space, such features also affect the appearance of the reflective surface 12.
- the reflective surface 12 may be on a ceiling or on a support member 20 for the LED light engine 18 and may be rigid enough to support its own weight below a ceiling tile, but may also use the LED light engine 18 for support.
- the reflective surface 12 may also be a ceiling barrier that supports its own weight and may use the ceiling supports for additional strength.
- the waveguide 30 generally defines a plane, and the plane of the waveguide 30 is generally parallel to the plane of the reflective surface 12.
- the LED light engine 18 is supported by a support member 20 and the reflective surface 12 is a surface of the supporting member of the reflective surface.
- the reflective surface 12 is positioned in an opening in a grid used to suspend a dropped ceiling.
- the waveguide 30 maybe adapted to direct all of the light generated from the LED light source 24 onto the reflective surface 12. Likewise, the waveguide 30 may also be directed to direct most of the light generated from the LED light source 24 onto the reflective surface 12. In one embodiment, the emission surface 31 angles away from the reflective surface 12, as shown for example in Figures 1C and 2C.
- the LED light engine 18 comprises a reflector 26.
- the waveguide 30 comprises a reflector 26 opposite the reflective surface 12.
- the reflective surface 12 has a first area and the LED light source 24 has a second area that is smaller than the first area.
- the first area is 12 times greater than the second area.
- the LED light engine 18 may be located adjacent to yet spaced apart from said reflective surface 12.
- the support element 21 may be adapted to fit in a modular ceiling system.
- a lighting system kit 10 comprising a support element 21 having a reflective surface 12 and an LED light engine 18 mounted on the support element 21.
- the LED light engine 18 includes an LED light source 24 that provides light in a first pattern, and a waveguide element 30 that receives the light from the LED light source 24 and redirects the light into a second pattern onto a portion of the reflective surface 12 laterally space from the waveguide element 30.
- the reflective surface 12 is diffuse. In another embodiment, the light shines downward from the reflective surface 12 into an area to be illuminated. In still another embodiment, the reflective surface 12 is on a ceiling. The reflective surface 12 may also be on a support member for the LED light engine 18.
- the waveguide 30 generally defines a plane and the plane of the waveguide 30 is generally parallel to the plane of the reflective surface 12.
- the LED light engine 18 may be supported by a support member, and the reflective surface 12 is a surface of the supporting member of the reflective surface 12.
- the reflective surface 12 may also be positioned in an opening in a grid used to suspend a dropped ceiling.
- the waveguide 30 may be adapted to direct all of the light generated from the LED light source 24 onto the reflective surface 12. In another embodiment, the waveguide 30 is directed to direct most of the light generated from the LED light source 24 onto the reflective surface 12. In still another embodiment, the emission surface 31 angles away from the reflective surface 12.
- the LED light engine 18 comprises a reflector 26.
- the waveguide 30 comprises a reflector 26 opposite the reflective surface 12.
- the reflective surface 12 has a first area and the LED light source 24 has a second area that is smaller than the first area. In a more particular embodiment, the first area is 12 times greater than the second area.
- the LED light engine 18 may be located adjacent to yet spaced apart from said reflective surface 12.
- the reflective surface 12 is positioned in an opening in a grid used to suspend a dropped ceiling.
- Figures 1 -1 ID show a dropped-ceiling lighting system 10 that is comprised of a reflector 12 positioned in an opening in a grid 16 used to suspend a dropped ceiling 14.
- a lighting device 18 including a light source 24 is mounted adjacent to the reflector 12.
- the light source 24 provides light in a first pattern, and a redirection element 26 receives light from the light source 24 and redirects the light into a second pattern onto the reflector 12.
- a structural support 20 secures the lighting device 18 to the grid 16 independent of the reflector 12.
- a power source 22 supplies power for the lighting device 18.
- the redirection element 26 may be an optical reflector that is positioned adjacent to the light source 24.
- the power source 22 is remotely located within the dropped ceiling 14.
- the reflector 12 is attached to a plenum barrier 28 such as a ceiling tile that spans the opening in the grid.
- the plenum barrier 28 defines an opening and the lighting device 18 is mounted in the opening, as shown in Figures 1-7.
- the lighting device 18 is mounted flush with the plenum barrier 28.
- the light source 24 is a light emitting diode ("LED").
- the light source 24 is oriented away from the reflector 12, as shown, for example, in Figures ID, 4D, and 6D.
- the light source 24 is oriented toward the reflector 12, as in Figures 7D and 8D, while in a third version of the embodiment, the light source 24 is oriented parallel to the reflector 12 as, for example, in Figure 5D.
- a waveguide 30 may be positioned adjacent to the light source 24, as is shown in Figures IC and D, 2C and D, 3C and D, 4C and D, and 5C and D.
- the waveguide 30 may be comprised of a thin body of acrylic having multiple extraction features 32, as shown in Figures 12A-C. Light from the light source 24 bounces through the waveguide 30 until it strikes one of the multiple extraction features 32 and is redirected.
- the reflector 12 may be a substrate. In yet another embodiment, the reflector 12 is a coating painted on the plenum barrier 28.
- a dropped-ceiling lighting system 10 comprised of a reflector 12 attached to a plenum barrier 28 such as a ceiling tile positioned in an opening in a grid 16 used to suspend a dropped ceiling 14.
- a power source 22 extends from a first edge 34 of the plenum barrier 28 to a second edge 36 of the plenum barrier 28, as shown in Figures 8-10, and a light source 24 is mounted to the power source 22.
- the power source 22 is mounted so as to extend along a portion of the ceiling grid 16 between adjacent ceiling tiles, as shown in Figures 9A-D.
- a linear array having a plurality of light sources 24 extends along the power source 22 and light generated by each of the plurality of light sources 24 is directed into a solid volume of acrylic.
- the reflector 12 is a substrate.
- the reflector 12 may also be a coating that is painted on the plenum barrier 28.
- the light source 24 may be an LED.
- the lighting device 18 When in operation, power is transmitted to the lighting device 18 from the power source 22.
- the lighting device 18 e.g., LEDs
- the lighting device 18 emits light either downward from the ceiling, upward toward the ceiling, or outward from the center of the lighting system in a direction parallel to the ceiling tile.
- the emitted light radiates through an optical reflector 26 and lens 38 before entering a space or room to be illuminated where it then reflects off of the reflector 12 so as to light the space.
- the appearance of the light will be guided by the shape of the light source but can be controlled by changing the geometry of the optics.
- the design results in a constant output of light being directed to different orientations on the troffer. This allows one to avoid high brightness areas in favor of low brightness so as to reduce glare.
- the light emitted from the LEDs is directed into a waveguide 30 made of a thin body of an acrylic-like substance.
- the light repeatedly bounces through the shaped acrylic body by total internal reflection until it strikes an extraction feature and is redirected into the body or escapes into the space or room to be illuminated where it then reflects off of the reflector 12 at a relatively high angle (e.g., 70°) with respect to a vertical axis of the lighting fixture, thereby lighting the space.
- facets may be placed on the exiting surface, where they use refraction to extract the light.
- facets may be placed opposite the exiting surface, where they use total internal reflection, then refraction, to extract light.
- the light bounces through the shaped acrylic body until it strikes an extraction feature and is redirected into the body or escapes.
- the full array of facets creates a controllable distribution of light out of the guide.
- the waveguide 30 may include a diffuser, and/or a reflector mounted below an exposed portion of the waveguide 30. This is to control the appearance of the guide 30 and to provide for additional control of the extracted light.
- a long, thin lighting device 18 runs from a first edge 34 to a second edge 36 of the reflector 12 where it fastens directly to the ceiling grid, as shown in Figures 8A-E.
- a linear array of light sources 24 runs along the lighting device 18 and directs its output into waveguide 30 made of a solid volume of acrylic-like material. Light emitted from the light sources 24 travels through the acrylic until striking an extraction feature and redirecting out of the optic where it is reflected off of the reflector 12, thereby lighting the space or room as desired.
- the electrical driver is mounted remotely above the ceiling plane and supplies power to the engine.
- the lighting device 18 can be mounted so that it runs across the ceiling tile, or so that it runs along the ceiling grid between tiles, as shown in Figures 9A-D.
- the waveguide 30 may include a diffuser, and/or a reflector mounted below an exposed portion of the waveguide 30. This is to control the appearance of the guide 30 and to provide for additional control of the extracted light.
- Figures 13A-E shows the distribution of light across a reflector when using a radial design while Figures 13D-E shows the light distribution resulting from a linear design.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
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Applications Claiming Priority (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361758660P | 2013-01-30 | 2013-01-30 | |
US61/758,660 | 2013-01-30 | ||
US13/839,949 US9581751B2 (en) | 2013-01-30 | 2013-03-15 | Optical waveguide and lamp including same |
US13/842,557 US9062869B2 (en) | 2013-03-15 | 2013-03-15 | Lighting apparatus with mounting bracket, and method |
US13/842,557 | 2013-03-15 | ||
US13/841,651 US9091417B2 (en) | 2013-03-15 | 2013-03-15 | Lighting apparatus with reflector and outer lens |
US13/841,651 | 2013-03-15 | ||
US13/841,074 US9625638B2 (en) | 2013-03-15 | 2013-03-15 | Optical waveguide body |
US13/842,521 US9519095B2 (en) | 2013-01-30 | 2013-03-15 | Optical waveguides |
US13/841,074 | 2013-03-15 | ||
US13/840,563 US10436969B2 (en) | 2013-01-30 | 2013-03-15 | Optical waveguide and luminaire incorporating same |
US13/840,563 | 2013-03-15 | ||
US13/842,521 | 2013-03-15 | ||
US13/839,949 | 2013-03-15 | ||
US14/015,801 | 2013-08-30 | ||
US14/015,801 US9291320B2 (en) | 2013-01-30 | 2013-08-30 | Consolidated troffer |
Publications (1)
Publication Number | Publication Date |
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WO2014120671A1 true WO2014120671A1 (en) | 2014-08-07 |
Family
ID=51262877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US2014/013400 WO2014120671A1 (en) | 2013-01-30 | 2014-01-28 | Consolidated troffer |
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WO (1) | WO2014120671A1 (en) |
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---|---|---|---|---|
US9920901B2 (en) | 2013-03-15 | 2018-03-20 | Cree, Inc. | LED lensing arrangement |
US11112083B2 (en) | 2013-03-15 | 2021-09-07 | Ideal Industries Lighting Llc | Optic member for an LED light fixture |
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