Invention Grant
- Patent Title: Surface light source device, optical member, and display device
- Patent Title (中): 表面光源装置，光学构件和显示装置
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Application No.: US13256338Application Date: 2010-03-24
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Publication No.: US08696187B2Publication Date: 2014-04-15
- Inventor: Masahiro Goto , Tetsuya Sadahiro
- Applicant: Masahiro Goto , Tetsuya Sadahiro
- Applicant Address: JP Shinjuku-Ku
- Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee Address: JP Shinjuku-Ku
- Agency: Burr & Brown, PLLC
- Priority: JP2009-074394 20090325
- International Application: PCT/JP2010/055090 WO 20100324
- International Announcement: WO2010/110319 WO 20100930
- Main IPC: F21V7/04
- IPC: F21V7/04
Abstract:
An optical member includes a first optical sheet, and a second optical sheet disposed on the light exit side of the first optical sheet. The optical sheets each include a body portion, and unit shaped elements arranged side by side on the body portion. The ratio of the height of the unit shaped elements relative to the arrangement pitch of the unit shaped elements in the first optical sheet is smaller than that in the second optical sheet.
Public/Granted literature
- US20120020081A1 SURFACE LIGHT SOURCE DEVICE, OPTICAL MEMBER, AND DISPLAY DEVICE Public/Granted day:2012-01-26
Information query
