Title:
POLARISING FILTER WITH MULTIFUNCTION AND METHOD FOR MANUFACTURING POLARISING FILTER WITH MULTIFUNCTION
Document Type and Number:
WIPO Patent Application WO/2012/001823
Kind Code:
A1
Abstract:
A polarizing filter with multifunction, wherein, in order to prevent the so-called vignetting phenomenon in which the filter frame is reflected in a captured image in a polarizing filter used for a digital camera, the advanced optical technology enables the thickness of the filter body to be manufactured very thinly, and integrally.
Inventors:
KARASAWA YUTAKA (JP)
Application Number:
PCT/JP2010/064122
Publication Date:
January 05, 2012
Filing Date:
August 12, 2010
Export Citation:
Assignee:
MARUMI OPTICAL CO LTD (JP)
KARASAWA YUTAKA (JP)
KARASAWA YUTAKA (JP)
International Classes:
G03B11/00; G02B1/11; G02B5/22; G02B5/26; G02B5/30
Foreign References:
| JP2007133049A | 2007-05-31 | |||
| JP2008170870A | 2008-07-24 | |||
| JP2009205091A | 2009-09-10 | |||
| JP2009077339A | 2009-04-09 | |||
| JP2002287212A | 2002-10-03 | |||
| JPH0983879A | 1997-03-28 |
Other References:
See also references of EP 2590013A4
Attorney, Agent or Firm:
HATAKEYAMA TAKASHI (JP)
Takashi Hatakeyama (JP)
Takashi Hatakeyama (JP)
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Claims: