Invention Grant
- Patent Title: Surface emitting light source with lateral variant refractive index profile
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Application No.: US16692648Application Date: 2019-11-22
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Publication No.: US11099393B2Publication Date: 2021-08-24
- Inventor: Maik Andre Scheller , Anurag Tyagi
- Applicant: Facebook Technologies, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Facebook Technologies, LLC
- Current Assignee: Facebook Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Agency: Weaver Austin Villeneuve & Sampson LLP
- Main IPC: G02B6/26
- IPC: G02B6/26 ; G02B27/01 ; H01L23/00 ; H01L33/06 ; H01L33/08 ; H01L33/14 ; H01L33/24 ; H01L33/30 ; H01L33/58 ; F21V8/00 ; H01L25/16

Abstract:
A micro-LED includes a light emitting device that emits a light beam surface—normally and a plurality of semiconductor layers that modify the light beam. Each semiconductor layer includes a first lateral region and a second lateral region, where the first lateral region and the second lateral region are characterized by different respective refractive indices. The first lateral regions of the plurality of semiconductor layers are arranged in two or more different lateral areas of the semiconductor light source. The second lateral region in each semiconductor layer of the plurality of semiconductor layers includes a semiconductor material with a different respective composition. The plurality of semiconductor layers form a planar optical component that is used to, for example, collimate, converge, diverge, or deflect the light beam emitted by the light emitting device.
Public/Granted literature
- US20210157142A1 SURFACE EMITTING LIGHT SOURCE WITH LATERAL VARIANT REFRACTIVE INDEX PROFILE Public/Granted day:2021-05-27
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