Recessed luminaire

• US 10,012,353 B2
• Filed: 09/11/2013
• Issued: 07/03/2018
• Est. Priority Date: 09/11/2012
• Status: Active Grant

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Inventors: Gould, Carl, Nelson, Peter K., Sorensen, Chris, Slaughter, Chris, Leadford, Kevin F.
• Primary Examiner(s): Gyllstrom, Bryon T
• Assistant Examiner(s): ENDO, JAMES M
• Application Number:
  US14/427,588
• Publication Number:
  US 20150226392A1
• Time in Patent Office: 1,756 Days
• Field of Search: 40444, 40442, 40562, 40563, 40582
• CPC Class Codes: F21K 9/62 using mixing chambers, e.g. housings with reflective walls
• CPC Class Codes: F21S 6/008 with a combination of direct and indirect lighting
• CPC Class Codes: F21S 8/024 intended to be recessed in a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21S 8/033 the surface being a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21V 21/025 Elongated bases having a U-shaped cross section
• CPC Class Codes: F21V 21/04 Recessed bases
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 5/08 producing an asymmetric light distribution
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• 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 47/165 following a pre-assigned programmed sequence; Logic control [LC]

Abstract

A two-component luminaire for illuminating an architectural space includes a housing with a panel that faces the architectural space. A peripheral edge of the housing, having first and second edge segments, forms an output aperture that faces the architectural space. A plane bisecting the output aperture defines a boundary between an indirect lighting region and a direct lighting region. The luminaire includes a primary optical subsystem arranged within the housing so as to be hidden from the direct lighting region by the first panel section, and configured to generate and emit light, through the output aperture, solely into the indirect lighting region, and a secondary optical subsystem, disposed within the housing and configured to generate and emit light through the output aperture.

Claims

1. A two-component luminaire with a total light output having a total photometric distribution for illuminating an architectural space, comprising:

a housing, including at least a panel that faces the architectural space, wherein

a peripheral edge of the housing forms an output aperture that faces the architectural space, a first edge segment of the peripheral edge bounding a first panel section of the panel, a second edge segment of the peripheral edge being across the output aperture from the first edge segment, and

a plane normal to the panel and bisecting in half the output aperture defines a boundary between an indirect lighting region and a direct lighting region, wherein the first edge segment and first panel section are within the direct lighting region, and the second edge segment is within the indirect lighting region;

a diffuser positioned within the housing;

a primary optical subsystem that is

arranged within the housing behind the first panel section so as to be hidden from view when viewed from the direct lighting region through the aperture perpendicularly to the panel, and

configured to generate and emit light having a primary photometric distribution through the output aperture into the indirect lighting region; and

a secondary optical subsystem, disposed within the housing and configured to generate and emit light having a secondary photometric distribution through the output aperture, wherein;

a majority of light from the secondary optical subsystem passes through the diffuser prior to emitting through the output aperture;

a majority of light from the primary optical subsystem does not pass through the diffuser prior to emitting through the output aperture; and

the primary optical subsystem contributes more than 50% of the total light output of the two-component luminaire and wherein the total photometric distribution is asymmetric relative to the plane normal to the panel such that more light of the total light output is directed into the indirect lighting region compared to the direct lighting region.

2. The two-component luminaire according to claim 1, wherein the primary optical subsystem is configured to illuminate a surface that is substantially perpendicular to the panel and within the indirect lighting region.

3. The two-component luminaire according to claim 1, wherein the light emitted by the secondary optical subsystem is distributed across the output aperture.

4. The two-component luminaire according to claim 1, further comprising a controller that independently controls one or more of lumen output, luminance, brightness, color and color temperature of the primary optical subsystem and the secondary optical subsystem.

5. The two-component luminaire according to claim 1, wherein the primary optical subsystem comprises a plurality of light sources disposed within the housing proximate the first edge segment and the first panel section.

6. The two-component luminaire according to claim 1, wherein the secondary optical subsystem comprises a light source selected from the group consisting of a plurality of multi-color light emitting diodes (LEDs), a liquid crystal display (LCD), an organic light emitting diode (OLED) display, an LED matrix, and a plasma display.

7. The two-component luminaire according to claim 1, wherein the secondary optical subsystem comprises a first plurality of light sources and a second plurality of light sources, and wherein the two-component luminaire further comprises a controller that independently controls the first plurality of light sources and the second plurality of light sources.

8. The two-component luminaire according to claim 7, wherein the first and second pluralities of light sources are independently controllable to emit light of adjustable color and intensity, such that the light sources can create a gradient of one or both of color and intensity across the output aperture, when the output aperture is viewed from the direct lighting region.

9. The two-component luminaire according to claim 1, wherein the primary optical subsystem is disposed between the diffuser and the first panel section such that from the direct lighting region, the diffuser is substantially visible across the output aperture, but the primary optical subsystem remains hidden by the first panel section.

10. The two-component luminaire according to claim 1, wherein the diffuser:

has a surface area larger than an area of the output aperture, and

is concave with respect to the output aperture.

11. The two-component luminaire according to claim 1, wherein:

the diffuser is collapsible such that it can be removed from the luminaire through the output aperture.

12. The two-component luminaire according to claim 1, wherein the primary optical subsystem comprises a plurality of light sources that produce substantially white light.

13. The two-component luminaire according to claim 1, further comprising a plurality of sidewalls disposed proximate the peripheral edge of the output aperture and extending perpendicularly into the housing from the peripheral edge.

14. The two-component luminaire according to claim 13, wherein

the housing is substantially rectangular;

the second edge segment of the peripheral edge is substantially horizontal when the luminaire is installed;

a first one of the plurality of sidewalls adjoins the second edge segment of the peripheral edge and extends perpendicularly into the housing therefrom;

third and fourth edge segments of the peripheral edge are substantially vertical when the luminaire is installed, each of the third and fourth edge segments connecting with the first and second edge segments proximate sides of the housing; and

second and third ones of the plurality of sidewalls adjoin the third and fourth edge segments respectively and extend perpendicularly into the housing therefrom.

15. The two-component luminaire according to claim 1, the output aperture forming a first output aperture, the two-component luminaire further comprising:

a second output aperture;

a second primary optical subsystem disposed to direct light through the second output aperture;

a second secondary optical subsystem disposed to direct light through the second output aperture; and

a controller configured to independently control one or more of lumen output, luminance, brightness, color and color temperature of light emitted by the primary optical subsystem, the secondary optical subsystem, the second primary optical subsystem, and the second secondary optical subsystem.

16. The two-component luminaire according to claim 1, wherein at least 50% of light emitted by the primary photometric distribution is directed at an angle of 0°

to 25°

relative to the plane normal to the panel.

17. The two-component luminaire according to claim 1, wherein the secondary photometric distribution comprises a uniform distribution of light into the architectural space.

18. The two-component luminaire according to claim 1, wherein the secondary photometric distribution is substantially Lambertian.

19. The two-component luminaire according to claim 1, wherein the primary photometric distribution and the secondary photometric distribution at least partially overlap.

20. The two-component luminaire according to claim 1, wherein the primary photometric distribution emits light into the indirect lighting region but not into the direct lighting region, and wherein the secondary photometric distribution emits light into both the indirect lighting region and the direct lighting region.

21. A luminaire with a total light output having a total photometric distribution for illuminating an architectural space, comprising:

a housing that forms an output aperture facing the architectural space;

a plane perpendicular to and bisecting in half the output aperture, wherein the plane extends between a first optical subsystem and a second optical subsystem;

the first optical subsystem, disposed on a first side of the plane such that the first optical subsystem is within the housing near a first edge of the output aperture;

the second optical subsystem, disposed on a second side of the plane such that the second optical subsystem is within the housing near a second edge of the output aperture, the second edge opposing the first edge across the output aperture;

a diffuser within the housing; and

each of the first and second optical subsystems including a plurality of colored light sources that are distributed in at least one of a horizontal direction and a vertical direction within the housing, wherein;

the colored light sources are arranged and independently controllable so as to create at least one of horizontal and vertical gradients of at least one of color and intensity across the output aperture when viewed from the architectural space;

a majority of light from the second optical subsystem passes through the diffuser prior to emitting through the output aperture;

a majority of light from the first optical subsystem does not pass through the diffuser prior to emitting through the output aperture;

the first optical subsystem emits light primarily toward the second side of the plane; and

the first optical subsystem emits more light into the architectural space than the second optical subsystem such that the total photometric distribution from the luminaire is asymmetric relative to the plane such that more light of the total light output is directed toward the second side of the plane compared to the first side of the plane.

22. The luminaire for illuminating the architectural space according to claim 21, wherein:

the diffuser at least partially mixes light from the colored light sources such that mixed light therefrom is visible through the output aperture;

the second optical subsystem is disposed behind the diffuser as viewed from the architectural space; and

the colored light sources of the first and second optical subsystems are independently controllable such that the first and second optical subsystems can create a gradient of at least one of color and intensity across the output aperture, as viewed from the architectural space.

23. The luminaire for illuminating the architectural space according to claim 21, wherein:

the first optical subsystem is disposed along a first lateral side of the output aperture;

the second optical subsystem is disposed along a second lateral side of the output aperture, across the output aperture from the first lateral side, and behind the diffuser as viewed from the architectural space; and

the colored light sources of the first and second optical subsystems are independently controllable such that the first and second optical subsystems can create a horizontal gradient of at least one of color and intensity across the output aperture, as viewed from the architectural space.

24. The luminaire for illuminating the architectural space according to claim 21, wherein:

the housing and the output aperture are substantially rectangular; and

the output aperture forms a peripheral edge, such that a first edge segment of the peripheral edge is substantially horizontal, and second and third edge segments of the peripheral edge are substantially vertical, when the luminaire is installed;

and further comprising;

a plurality of sidewalls extending perpendicularly into the housing from the output aperture, wherein

a first one of the sidewalls adjoins the first edge segment of the peripheral edge and extends perpendicularly into the housing therefrom;

second and third ones of the sidewalls adjoin the second and third edge segments respectively, and extend perpendicularly into the housing therefrom.

25. The luminaire for illuminating the architectural space according to claim 21, wherein:

the first optical subsystem is disposed along an upper side of the output aperture aperture;

the second optical subsystem is disposed along a lower side of the output aperture, across the output aperture from the upper side, and behind the diffuser as viewed from the architectural space; and

the colored light sources of the first and second optical subsystems are independently controllable such that the first and second optical subsystems can create a vertical gradient of at least one of color and intensity across the output aperture, as viewed from the architectural space.

26. The luminaire for illuminating the architectural space according to claim 21, wherein the first optical subsystem emits light toward the second side of the plane but does not emit light toward the first side of the plane.

27. A luminaire with a total light output having a total photometric distribution for illuminating an architectural space, comprising:

a housing that forms an output aperture facing the architectural space, wherein

the housing and the output aperture are substantially rectangular,

the output aperture forms a peripheral edge, such that first and fourth segments of the peripheral edge at respective upper and lower sides of the output aperture are substantially horizontal, and second and third edge segments of the peripheral edge along sides of the output aperture are substantially vertical, when the luminaire is installed,

a plane perpendicular to and bisecting in half the second and third edge segments,

the housing includes first, second, and third sidewalls extending perpendicularly into the housing from the output aperture, wherein the first sidewall adjoins the first segment of the peripheral edge and extends perpendicularly into the housing therefrom, and the second and third sidewalls adjoin the second and third segments of the peripheral edge respectively, and extend perpendicularly into the housing therefrom; and

at least one optical subsystem disposed within the housing, each optical subsystem including a plurality of independently controllable red, green, and blue light sources that emit light; and

a diffuser, disposed behind the first, second, and third sidewalls that at least partially mixes light from the light sources such that the at least partially mixed light is visible within and emitted through the output aperture, wherein;

a majority of light from one of the at least one optical subsystem passes through the diffuser prior to emitting through the output aperture;

a majority of light from another of the at least one optical subsystem does not pass through the diffuser prior to emitting through the output aperture; and

wherein the at least one optical subsystem emits more than 70% of the emitted light above the plane such that the total photometric distribution of the luminaire is asymmetric relative to the plane and more light of the total light output is directed above the plane compared to below the plane.