Invention Grant
US08816960B2 Light detector, optical position detection apparatus, and display apparatus with position detection capability
有权
光检测器，光学位置检测装置和具有位置检测能力的显示装置
- Patent Title: Light detector, optical position detection apparatus, and display apparatus with position detection capability
- Patent Title (中): 光检测器，光学位置检测装置和具有位置检测能力的显示装置
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Application No.: US12852709Application Date: 2010-08-09
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Publication No.: US08816960B2Publication Date: 2014-08-26
- Inventor: Yasunori Onishi
- Applicant: Yasunori Onishi
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2009-235996 20091013
- Main IPC: G06F3/033
- IPC: G06F3/033 ; G09G5/08
Abstract:
A light detector includes: a light receiving device having a central optical axis and first and second directions perpendicular thereto, the light receiving device detecting incident light; a first light shield provided on a light incident side of the light receiving device and disposed on one side in the first direction with respect to the light receiving device; and a second light shield provided on the light incident side of the light receiving device and disposed on the other side in the first direction with respect to the light receiving device, wherein the first and second light shields form a light incident slit over an angular range including the direction in which the central optical axis of the light receiving device extends, and the width of the slit increases as the angle with respect to the central optical axis of the light receiving device increases.
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