Invention Grant
- Patent Title: Light reflector and planar light source device
- Patent Title (中): 光反射器和平面光源装置
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Application No.: US11722026Application Date: 2005-12-16
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Publication No.: US08542443B2Publication Date: 2013-09-24
- Inventor: Takahiko Ueda , Hiroshi Koyama
- Applicant: Takahiko Ueda , Hiroshi Koyama
- Applicant Address: JP Tokyo
- Assignee: Yupo Corporation
- Current Assignee: Yupo Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2004-366874 20041217
- International Application: PCT/JP2005/023142 WO 20051216
- International Announcement: WO2006/064907 WO 20060622
- Main IPC: G02B5/02
- IPC: G02B5/02 ; G02F1/13357
Abstract:
A light reflector of which the bidirectional reflectance R1 is from 90 to 120% when the light entrance angle is 15° and the light acceptance angle is 0°, and the bidirectional reflectance R2 is from 85 to 110% when the light entrance angle is 75° and the light acceptance angle is 0°. The light reflector has high reflectivity, and attains brightness improvement even in underlight-type backlights.
Public/Granted literature
- US20080130295A1 Light Reflector And Planar Light Source Device Public/Granted day:2008-06-05
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