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Title:
APERTURE MECHANISM
Document Type and Number:
WIPO Patent Application WO/2011/065017
Kind Code:
A1
Abstract:
An aperture mechanism (10) wherein two aperture blades (14, 16) are disposed so as to overlap each other and form, by means of edges of the aperture blades, a single light passage opening (50) into which the light utilized for image-capturing is introduced. A drive mechanism (22) changes within a predetermined range the area of opening of the light passage opening (50) by driving the two aperture blades (14, 16) in directions different from each other. The two aperture blades (14, 16) are provided so that, when the aperture blades are located at the smallest aperture position at which the area of opening of the light passage opening (50) is smallest within the predetermined range, the single light passage opening (50) which is surrounded by boundaries including eight straight lines is formed by the edges of the aperture blades.

Inventors:
MURAMATSU HIDEAKI (JP)
ONO TAKASHI (JP)
Application Number:
PCT/JP2010/006923
Publication Date:
June 03, 2011
Filing Date:
November 26, 2010
Export Citation:
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Assignee:
VICTOR COMPANY OF JAPAN (JP)
MURAMATSU HIDEAKI (JP)
ONO TAKASHI (JP)
International Classes:
G03B9/02; G03B9/14
Foreign References:
JP2001147460A2001-05-29
JP2007101709A2007-04-19
JPH07264467A1995-10-13
JP2003344895A2003-12-03
JP2001147709A2001-05-29
JP2007101709A2007-04-19
JPH07264467A1995-10-13
Other References:
See also references of EP 2506072A4
Attorney, Agent or Firm:
MORISHITA, SAKAKI (JP)
Sakaki Morishita (JP)
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