Invention Grant
- Patent Title: Dual film light guide for illuminating displays
- Patent Title (中): 用于照明显示屏的双膜光导
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Application No.: US11742299Application Date: 2007-04-30
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Publication No.: US07733439B2Publication Date: 2010-06-08
- Inventor: Jeffrey B. Sampsell , Russell W. Gruhlke , Mark Mienko , Gang Xu , Ion Bita
- Applicant: Jeffrey B. Sampsell , Russell W. Gruhlke , Mark Mienko , Gang Xu , Ion Bita
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM MEMS Technologies, Inc.
- Current Assignee: QUALCOMM MEMS Technologies, Inc.
- Current Assignee Address: US CA San Diego
- Agency: Knobbe, Martens, Olson & Bear LLP
- Main IPC: G02F1/335
- IPC: G02F1/335 ; G02F1/00

Abstract:
A front light guide panel including a plurality of embedded surface features is provided. The front light panel is configured to deliver uniform illumination from an artificial light source disposed at one side of the font light panel to an array of display elements located behind the front light guide while allowing for the option of illumination from ambient lighting transmitted through the light guide panel. The surface embedded surface relief features create air pockets within the light guide panel. Light incident on the side surface of the light guide propagates though the light guide until it strikes an air/light material guide interface at one on the air pockets. The light is then turned by total internal reflection through a large angle such that it exits an output face disposed in front of the array of display elements.
Public/Granted literature
- US20080267572A1 DUAL FILM LIGHT GUIDE FOR ILLUMINATING DISPLAYS Public/Granted day:2008-10-30
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