Title:
LIGHT CONTROLLER AND IMAGING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2003/096108
Kind Code:
A1
Abstract:
A light controller and an imaging apparatus having an enhanced optical function. The light controller comprises a liquid crystal element and a polarizing plate disposed in front of an optical low-pass filter (55b) in the optical path of the imaging apparatus. Furthermore, the polarizing axis (14) of the polarizing plate and the crystal orientation of the liquid crystal element are directed differently from the orientation for separating a normal light beam from an abnormal light beam through the optical low-pass filter (55b). The light controller is applicable to the optical diaphragm of the imaging apparatus, e.g. a CCD camera or a CMOS image sensor.
Inventors:
YANAGIDA TOSHIHARU (JP)
Application Number:
PCT/JP2003/005762
Publication Date:
November 20, 2003
Filing Date:
May 08, 2003
Export Citation:
Assignee:
SONY CORP (JP)
YANAGIDA TOSHIHARU (JP)
YANAGIDA TOSHIHARU (JP)
International Classes:
G02F1/13; G02F1/1335; G02B5/30; G02F1/137; G02F1/139; G03B9/02; H04N5/225; H04N5/238; (IPC1-7): G02F1/13; G02F1/137
Foreign References:
| EP1186941A1 | 2002-03-13 | |||
| JPH05323306A | 1993-12-07 | |||
| JP2002122813A | 2002-04-26 | |||
| JP2000056268A | 2000-02-25 |
Other References:
See also references of EP 1505427A4
Attorney, Agent or Firm:
Nakamura, Tomoyuki c/o Miyoshi International Patent Office (9th Floor Toranomon Daiichi Building, 2-3,
Toranomon 1-chom, Minato-ku Tokyo, JP)
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