Invention Grant
- Patent Title: Light guides having enhanced light extraction
- Patent Title (中): 具有增强光提取的光导
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Application No.: US13139600Application Date: 2009-12-08
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Publication No.: US08909009B2Publication Date: 2014-12-09
- Inventor: Tzu-Chen Lee , David A. Ender , Guoping Mao , Jun-Ying Zhang , Jaime B. Willoughby
- Applicant: Tzu-Chen Lee , David A. Ender , Guoping Mao , Jun-Ying Zhang , Jaime B. Willoughby
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Yufeng Dong; Kristofor L. Storvick; Daniel J. Iden
- International Application: PCT/US2009/067067 WO 20091208
- International Announcement: WO2010/080289 WO 20100715
- Main IPC: G02B6/26
- IPC: G02B6/26 ; G02B6/10 ; G02B6/34 ; F21V8/00 ; G02F1/1335

Abstract:
Lightguides, devices incorporating lightguides, processes for making lightguides, and tools used to make lightguides are described. A lightguide includes light extractors arranged in a plurality of regions on a surface of the lightguide. The orientation of light extractors in each region is arranged to enhance uniformity and brightness across a surface of the lightguide and to provide enhanced defect hiding. The efficiency of the light extractors is controlled by the angle of a given light extractor face with respect to a light source illuminating the light guide.
Public/Granted literature
- US20110243500A1 LIGHT GUIDES HAVING ENHANCED LIGHT EXTRACTION Public/Granted day:2011-10-06
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