Illumination Devices with Adjustable Optical Elements

Patent metadata

Field	Value
Publication number	US-2017038041-A1
Application number	US-201615231644-A
Country	US
Kind code	A1
Filing date	Aug 8, 2016
Priority date	Apr 19, 2013
Publication date	Feb 9, 2017
Grant date	—

Abstract

Illumination devices with adjustable optical elements configured to provide a variable illumination pattern of an area are described. The adjustable optical elements of the illumination devices can be traversed relative to a surface (e.g., a ceiling of a room) to vary the light distribution and/or intensity to the surface.

First claim

1 - 18 . (canceled)

19 . An illumination device comprising:
a housing having an opening; an adjustable mount attached to the housing; and a luminaire module coupled to the housing via the adjustable mount, the luminaire module comprising:
a plurality of light-emitting elements (LEEs) adapted to emit light;
a light guide positioned to receive, at an input end of the light guide, light from the LEEs and adapted to guide the received light to an output end of the light guide, wherein the light guide comprises a pair of parallel side surfaces extending between the input end and the output end; and
an optical extractor optically coupled with the light guide at the output end to receive light from the light guide, the optical extractor comprising at least one redirecting surface and one or more output surfaces, the at least one redirecting surface being adapted to reflect at least a portion of the light received at the optical extractor towards the one or more output surfaces,
wherein the LEEs and at least a portion of the light guide are recessed within the housing and the adjustable mount allows adjusting a position between the optical extractor and the opening of the housing.

20 . The illumination device of claim 19 , wherein the luminaire module further comprises one or more primary optics
positioned to receive light emitted by at least some of the LEEs, adapted to at least partially collimate the light from the at least some LEEs, and optically coupled at an input end of the light guide.

21 - 23 . (canceled)

24 . The illumination device of claim 19 , wherein the at least one redirecting surface is partially transmissive for the light received from the light guide.

25 . The illumination device of claim 19 , wherein the at least one redirecting surface reflects substantially all of the light received from the light guide.

26 - 29 . (canceled)

30 . The illumination device of claim 19 , wherein the housing comprises a mounting structure adapted to mount the illumination device in a ceiling so that adjusting the position between the optical extractor and the opening of the housing varies a distance between the optical extractor and the ceiling.

31 . The illumination device of claim 19 , wherein the adjustable mount comprises an electromechnical actuator adapted to move the luminaire module relative to the housing.

32 . The illumination device of claim 19 , wherein the adjustable mount is a manually adjustable mount.

33 . The illumination device of claim 19 , further comprising a stand for supporting the housing during operation of the illumination device.

34 . The illumination device of claim 33 , wherein the stand is a floor stand or a desk stand.

35 . The illumination device of claim 19 , wherein the housing comprises a connector for connecting the illumination device to a standard light socket.

36 . The illumination device of claim 35 , wherein the adjustable mount is adapted to translate the luminaire module relative to the connector.

37 . (canceled)

38 . The illumination device of claim 19 , wherein the illumination device is sized to attach to a recessed can ceiling fixture.

39 - 52 . (canceled)

Assignees

• Quarkstar Llc

Inventors

• Ng Andrew Tien-Man
• Speier Ingo
• Dau Wilson
• Lerman Louis
• Stormberg Hans Peter

Classifications

• G02B5/0284

  used in reflection · CPC title

• G02B6/0051

  Diffusing sheet or layer · CPC title

• G02B6/0045

  by shaping at least a portion of the light guide · CPC title

• G02B6/0096

  the lights guides being of the hollow type · CPC title

• F21K9/61

  using light guides · CPC title