Invention Grant
- Patent Title: Multifunctional polarizing filter and method for manufacturing the same
- Patent Title (中): 多功能偏振滤光器及其制造方法
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Application No.: US13700537Application Date: 2010-08-12
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Publication No.: US08670177B2Publication Date: 2014-03-11
- Inventor: Yutaka Karasawa
- Applicant: Yutaka Karasawa
- Applicant Address: JP Tokyo
- Assignee: Marumi Optical Co., Ltd.
- Current Assignee: Marumi Optical Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Flynn, Thiel, Boutell & Tanis, P.C.
- Priority: JP2010-162247 20100630
- International Application: PCT/JP2010/064122 WO 20100812
- International Announcement: WO2012/001823 WO 20120105
- Main IPC: G02B5/30
- IPC: G02B5/30
Abstract:
A multifunctional polarizing filter is used for a digital camera, and is produced by advanced optical technology to have a very small thickness and an integral structure in order to prevent a vignetting phenomenon in which the captured image is adversely affected by the frame of the filter.
Public/Granted literature
- US20130077156A1 POLARIZING FILTER WITH MULTIFUNCTION AND METHOD FOR MANUFACTURING POLARIZING FILTER WITH MULTIFUNCTION Public/Granted day:2013-03-28
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