Invention Grant
- Patent Title: Optical filter and optical module having optical filter
- Patent Title (中): 光滤波器和光滤波器
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Application No.: US12628754Application Date: 2009-12-01
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Publication No.: US08687254B2Publication Date: 2014-04-01
- Inventor: Yuki Hanamura , Takeo Funakawa , Tsukasa Funasaka
- Applicant: Yuki Hanamura , Takeo Funakawa , Tsukasa Funasaka
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Global IP Counselors, LLP
- Priority: JP2008-313306 20081209
- Main IPC: G02B26/08
- IPC: G02B26/08

Abstract:
An optical filter comprising a first substrate, a first mirror formed on the first substrate, a second substrate coupled to the first substrate, the second substrate including a concave portion, and a second mirror formed on the concave portion and facing the first mirror, wherein the first substrate includes a first portion located on the first mirror, a second portion located around the first portion, a third portion located around the second portion, and a fourth portion located around the third portion, wherein both a thickness of the second portion and a thickness of the fourth portion are equal to or smaller than a thickness of the first portion.
Public/Granted literature
- US20100142067A1 OPTICAL FILTER AND OPTICAL MODULE HAVING OPTICAL FILTER Public/Granted day:2010-06-10
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