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Patent Searching and Data


Title:
PHASE FILTER, IMAGING OPTICAL SYSTEM, AND IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/155790
Kind Code:
A1
Abstract:
A phase filter (101) comprises a structure of annular rings with rotational symmetry around the optical axis, the annular rings each having substantially parabolic cross-sections such that incident light beams are uniformly magnified on a focal plane and mutually overlap.

Inventors:
SHIMANO, Takeshi (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SAKITA, Kouichi (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
OOTA, Mitsuhiko (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
Application Number:
JP2013/078090
Publication Date:
October 02, 2014
Filing Date:
October 16, 2013
Export Citation:
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Assignee:
HITACHI MAXELL, LTD. (1-88, Ushitora 1-chome Ibaraki-sh, Osaka 67, 〒5678567, JP)
International Classes:
G02B5/02; A61B5/117; A61B10/00; B60R1/00; G02B3/08; G02B3/10; G02B5/04; G02B5/18; G03B11/00; G08G1/16; H04N5/232
Foreign References:
JP2007327966A2007-12-20
JP2005331784A2005-12-02
JPH03107799U1991-11-06
JPH07198909A1995-08-01
JP2002244050A2002-08-28
JP2011128238A2011-06-30
Attorney, Agent or Firm:
ISSHIKI & CO. (Rookin-Shinbashi Bldg, 12-7 Shinbashi 2-chome, Minato-k, Tokyo 04, 〒1050004, JP)
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