Devices for workspace illumination having a panel forming an enclosure and a plurality of light emitters with primary and secondary optics

• US 10,190,762 B2
• Filed: 08/28/2017
• Issued: 01/29/2019
• Est. Priority Date: 09/13/2012
• Status: Active Grant

• Current Assignee: Quarkstar LLC
• Original Assignee: Quarkstar LLC
• Inventors: Dau, Wilson, Speier, Ingo, Schinagl, Ferdinand, Velasquez, Edgar R.
• Primary Examiner(s): May, Robert J
• Application Number:
  US15/688,648
• Publication Number:
  US 20180202646A1
• Time in Patent Office: 519 Days
• 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 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 33/006 General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/0033 with successive reflections from one reflector to the next or following
• CPC Class Codes: F21W 2131/402 for working places
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0045 by shaping at least a portion of the light guide
• CPC Class Codes: G02B 6/0076 Stacked arrangements of multiple light guides of the same or different cross-sectional area
• CPC Class Codes: G02B 6/0095 Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like

Abstract

Devices used for workspace illumination include, for example, a panel and a solid-state based optical system arranged inside an enclosure of the panel. The panel can be a cubicle divider. In one aspect, an illumination device includes a mount; a panel including a first face and a second opposing face. The panel is vertically supported by the mount along a horizontal dimension of the first and second faces. Further, the panel forms an enclosure between the first and the second face. Additionally, the illumination device includes a first luminaire module arranged in the enclosure and configured to output light in a first output angular range. The light output in the first output angular range has a prevalent propagation direction with a vertical component towards a first target area.

Claims

1. An illumination device comprising:

a mount;

a panel comprising a first face and a second opposing face forming an enclosure, the first and second faces extending in a first direction and a second direction perpendicular to the first direction, wherein, when mounted to a floor, the mount supports the panel so that the first direction is a vertical direction and the second direction is a horizontal direction; and

a luminaire module arranged in the enclosure, the luminaire module configured and arranged to output light towards respective target areas proximate to the first and the second face of the panel,

the luminaire module comprising;

a plurality of light-emitting elements (LEEs) distributed along the second direction, the plurality of LEEs being configured to emit light;

one or more primary optics coupled with one or more corresponding LEEs of the plurality of LEEs and configured to redirect light emitted by the one or more corresponding LEEs as redirected light; and

a secondary optic elongated along the second direction and comprising two redirecting surfaces and two output surfaces corresponding to the respective redirecting surfaces, each of the two redirecting surfaces being arranged and configured to reflect the light received from the one or more primary optics as reflected light towards the corresponding output surface, and the corresponding output surface being arranged and configured to refract the reflected light and to output the refracted light towards the respective target area.

2. The illumination device of claim 1, wherein the luminaire module is configured to output the light towards the respective target area proximate to the first face of the panel in an angular range with different divergence and asymmetric prevalent propagation direction than an angular range of the light output towards the respective target area proximate to the second face of the panel.

3. The illumination device of claim 1, wherein the luminaire module is configured to output light downward within +/−

40 degrees relative to the panel.

4. The illumination device of claim 1, wherein the luminaire module further comprises a light guide elongated along the second direction and disposed between the one or more primary optics and the secondary optic, the light guide configured to receive the redirected light and guide at least some of the received light along the first direction and provide the guided light at a distal end of the light guide to the secondary optic.

5. The illumination device of claim 1, wherein

the first face of the panel has a first aperture located proximate a distal end of the panel with respect to a portion of the mount along the second direction, and wherein the light that is output by the luminaire module towards the one of the target areas proximate to the first face of the panel passes through the first aperture, and

the second face of the panel has a second aperture located proximate the distal end of the panel, wherein the light that is output by the luminaire module towards the one of the target areas proximate to the second face of the panel passes through the second aperture.

6. The illumination device of claim 5, wherein each of the first aperture and the second aperture is elongated along the second direction.

7. The illumination device of claim 5, wherein at least one of the first aperture and the second aperture comprises glass.

8. The illumination device of claim 1, wherein a thickness of the panel is smaller than each of the second direction and the first direction of the first and second faces.

9. The illumination device of claim 1, wherein the panel is at least a portion of one of a cubical wall, a desk partition, a room partition, a wall panel, or an element of a piece of furniture.

10. The illumination device of claim 1, wherein a portion of the mount is configured to couple to the panel along the second direction.

11. The illumination device of claim 1, wherein a portion of the mount is configured to couple to a top of the panel.

12. The illumination device of claim 11, wherein the illumination device is detachable from the panel.