COMPOSITE LIGHT SOURCE SYSTEMS AND METHODS

• US 20150345724A1
• Filed: 07/23/2015
• Published: 12/03/2015
• Est. Priority Date: 04/02/2014
• Status: Abandoned Application

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Inventors: LEADFORD, KEVIN F., Gould, Carl T., Sorensen, Christopher J., Slaughter, Christopher D., Nelson, Peter K., Miller, Joshua
• Application Number:
  US14/807,398
• Publication Number:
  US 20150345724A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21S 8/03 of surface-mounted type F21S8/02, F21S8/04 take precedence; details of wall or floor bases F21V21/02
• CPC Class Codes: F21V 23/003 the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light

Abstract

A composite light source includes at least eight illumination panels in a layout. Each of the illumination panels in the layout is adjacent at least one other of the illumination panels. All of the illumination panels emit light of the same chromaticity as one another. Each illumination panel emits light characterized by one of at least first, second, and third discrete levels of luminous intensity. At least one of the illumination panels emits light at the first level of luminous intensity; at least one of the illumination panels emits light at the second level of luminous intensity; and at least one of the illumination panels emits light at the third level of luminous intensity.

Claims

1. A composite light source, comprising:

a plurality of at least eight illumination panels provided in a layout within the composite light source, wherein;

each of the illumination panels in the layout is adjacent to at least one other of the plurality of illumination panels;

all of the illumination panels emit light of substantially the same chromaticity as one another;

each illumination panel emits light characterized by one of at least first, second, and third discrete levels of luminous intensity;

at least one of the illumination panels emits light at the first level of luminous intensity;

at least one of the illumination panels emits light at the second level of luminous intensity; and

at least one of the illumination panels emits light at the third level of luminous intensity.

2. The composite light source of claim 1, wherein any selected one of the plurality of at least eight illumination panels emits light having luminous intensity at a same one of the first, second or third luminous intensity levels as no more than one illumination panel that is adjacent to the selected one of the plurality of at least eight illumination panels.

3. The composite light source of claim 2, wherein the selected one of the plurality of at least eight illumination panels emits light having luminous intensity at a same one of the first, second or third luminous intensity levels as no more than one illumination panel laterally or diagonally adjacent to the selected one of the plurality of at least eight illumination panels.

4. The composite light source of claim 1, wherein each of the plurality of at least eight illumination panels is rectilinear and the plurality of at least eight illumination panels forms a rectilinear array of at least two rows and at least two columns.

5. The composite light source of claim 4, wherein each of the plurality of at least eight illumination panels is square.

6. The composite light source of claim 5, wherein the plurality of at least eight illumination panels consists of nine of the illumination panels that form an array of three columns and three rows.

7. The composite light source of claim 1, wherein at least one of the plurality of at least eight illumination panels emits light at a fourth level of luminous intensity.

8. The composite light source of claim 1, wherein at least one of the plurality of at least eight illumination panels emits light at a fifth level of luminous intensity.

9. The composite light source of claim 1, wherein each of the levels of luminous intensity are at least ten percent different in luminous intensity relative to one another.

10. The composite light source of claim 1, wherein chromaticities of the light emitted by the illumination panels are within a five step MacAdam ellipse of one another.

11. The composite light source of claim 1,

wherein each one of the plurality of at least eight illumination panels comprises a corresponding output lens having a planar outward surface;

wherein the planar outward surfaces of the output lenses are arranged along a common output plane of the composite light source; and

wherein the output lenses are separated from one another by isolating structure that optically isolates the illumination panels from one another.

12. The composite light source of claim 11,

wherein each one of the plurality of at least eight illumination panels comprises a corresponding light emitter that provides the light for the one of the illumination panels and is disposed above the common output plane, and

wherein the composite light source further comprises a housing that provides mechanical support for the plurality of at least eight illumination panels, the housing comprising baffles as the isolating structure, the baffles extending downwardly at least to the common output plane.

13. The composite light source of claim 11,

wherein the isolating structure includes a snap feature that yields as one of the lenses moves toward the common output plane, and wherein the snap feature snaps into place to hold it in place, when an outward surface of the at least one of the lenses moves past the snap feature to the common output plane.

14. The composite light source of claim 11,

wherein the isolating structure is substantially flush with the outward surface of the at least one of the lenses at the common output plane.

15. The composite light source of claim 11,

wherein a divider assembly includes dividers and the output lenses as part of the isolating structure.

16. The composite light source of claim 15,

wherein the output lenses and dividers are bonded to form the divider assembly.

17. The composite light source of claim 1,

wherein each of the plurality of at least eight illumination panels emits light at its own respective level of luminous intensity, and

wherein the respective levels of luminous intensity emitted by each of the plurality of at least eight illumination panels does not change each time the composite light source is operated.

18. The composite light source of claim 1, wherein the composite light source includes a controller that assigns a level of luminous intensity emitted by each of the plurality of at least eight illumination panels.

19. The composite light source of claim 18, wherein the controller assigns the level of luminous intensity emitted by each of the plurality of at least eight illumination panels each time the composite light source is activated.

20. The composite light source of claim 18, wherein the controller reassigns the level of luminous intensity emitted by each of the plurality of at least eight illumination panels during operation of the composite light source.

21. The composite light source of claim 20, wherein the controller reassigns the level of luminous intensity emitted by each of the plurality of at least eight illumination panels during operation based on input received from a user.

22. The composite light source of claim 20, wherein the controller reassigns the level of luminous intensity emitted by each of the plurality of at least eight illumination panels during operation without receiving input from a user.

23. A composite lighting system, comprising:

a plurality of luminaires, each of the luminaires comprising at least three illumination panels provided in a layout;

wherein, across all luminaires of the composite lighting system;

all of the illumination panels emit light of substantially the same chromaticity as one another;

each illumination panel emits light characterized by one of at least first, second, and third discrete levels of luminous intensity;

at least one of the illumination panels emits light at the first level of luminous intensity;

at least one of the illumination panels emits light at the second level of luminous intensity;

at least one of the illumination panels emits light at the third level of luminous intensity; and

each of the plurality of luminaires has an identical layout of the illumination panels as each other luminaire of the plurality of luminaires, and provides a same net lumen output as is provided by each other luminaire of the plurality of luminaires.

24. The composite light source of claim 23, wherein, in each luminaire:

each of the at least three illumination panels in the layout is adjacent to at least one other of the at least three illumination panels in the luminaire;

any selected one of the at least three illumination panels in the luminaire emits light of the same luminous intensity as no more than one illumination panel adjacent to the selected one of the at least three illumination panels in the luminaire.

25. The composite light source of claim 23, wherein arrangements of the first, second, and third discrete levels of luminous intensity across the at least three illumination panels of each luminaire are different for at least two luminaires of the composite lighting system.

26. A composite lighting system, comprising:

a plurality of luminaires, each of the luminaires comprising at least three illumination panels provided in a layout;

wherein at least one of the luminaires of the composite lighting system has a layout that differs from a layout of at least one other of the luminaires of the composite lighting system;

wherein each of the plurality of luminaires provides a same net lumen output per unit area of the layout, as is provided by each other luminaire of the plurality of luminaires; and

wherein, across all luminaires of the composite lighting system;

all of the illumination panels emit light of substantially the same chromaticity as one another;

each illumination panel emits light characterized by one of at least first, second, and third discrete levels of luminous intensity;

at least one of the illumination panels emits light at the first level of luminous intensity;

at least one of the illumination panels emits light at the second level of luminous intensity; and

at least one of the illumination panels emits light at the third level of luminous intensity.