Invention Grant
- Patent Title: Illumination device for direct-indirect illumination
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Application No.: US14422851Application Date: 2014-09-17
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Publication No.: US09664839B2Publication Date: 2017-05-30
- Inventor: Allan Brent York , Hans Peter Stormberg , Louis Lerman , Ferdinand Schinagl , Wilson Dau
- Applicant: Quarkstar LLC
- Applicant Address: US NV Las Vegas
- Assignee: Quarkstar LLC
- Current Assignee: Quarkstar LLC
- Current Assignee Address: US NV Las Vegas
- Agency: Fish & Richardson P.C.
- International Application: PCT/US2014/056146 WO 20140917
- International Announcement: WO2015/042183 WO 20150326
- Main IPC: F21V7/04
- IPC: F21V7/04 ; F21V8/00 ; F21V7/00 ; F21K9/61 ; F21K99/00 ; G02B19/00 ; F21S8/02 ; F21Y101/00 ; F21Y103/10 ; F21Y115/10 ; F21Y103/00 ; F21Y101/02

Abstract:
An illumination device includes a plurality of light-emitting elements (LEEs); a light guide extending in a forward direction from a first end to a second end to receive at the first end light emitted by the LEEs and to guide the received light to the second end; an optical extractor optically coupled to the second end to receive the guided light, the optical extractor including a redirecting surface to reflect a first portion of the guided light, the reflected light being output by the optical extractor in a backward angular range, and the redirecting surface having one or more transmissive portions to transmit a second portion of the guided light in the forward direction; and one or more optical elements optically coupled to the transmissive portions, the optical elements to modify the light transmitted through the transmissive portions and to output the modified light in a forward angular range.
Public/Granted literature
- US20160025300A1 Illumination Device for Direct-Indirect Illumination Public/Granted day:2016-01-28
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