Invention Grant
- Patent Title: Spectrum sensor and angle restriction filter
- Patent Title (中): 光谱传感器和角度限制滤光片
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Application No.: US13073923Application Date: 2011-03-28
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Publication No.: US09012829B2Publication Date: 2015-04-21
- Inventor: Noriyuki Nakamura
- Applicant: Noriyuki Nakamura
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Kilpatrick Townsend & Stockton LLP
- Priority: JP2010-075007 20100329
- Main IPC: G02B5/22
- IPC: G02B5/22 ; G02B5/20 ; G01J3/02 ; G01J3/51 ; G02B5/28

Abstract:
An angle restriction filter that allows light incident thereon in a predetermined range of incident angles to pass, includes: an optical path wall section formed from a plurality of light shield members laminated in layers including a common material, thereby forming an optical path in a lamination direction of the light shield members; and a light transmission section formed in a region surrounded by the optical path wall section.
Public/Granted literature
- US20110233388A1 SPECTRUM SENSOR AND ANGLE RESTRICTION FILTER Public/Granted day:2011-09-29
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