Title:
LIGHT-AMOUNT ADJUSTING DEVICE
Document Type and Number:
Japanese Patent JP2015175966
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a light-amount adjusting device that enables effective prevention of occurrence of an image failure such as a ghost and the like by smoothly performing rising of each blade member causing an optical path aperture to open/close and surely regulating a light shielding range accompanied by an opening/closing operation of each blade member.SOLUTION: In a light-amount adjusting device having a plurality of blade members 15 and forming an optical path by opening/closing of the blade member 15, an inclined plane 36 is provided in an outer peripheral end part 35 of the blade member 15, and the inclined plane 36 has at least one or more deflection parts E and F provided outside a virtual linear line (B-C) connecting a tip end part (B) of the inclined plane 36 and a rear end part (D) thereof.
Inventors:
TAKAYA SHOICHI
SANAO YOSUKE
SANAO YOSUKE
Application Number:
JP2014052022A
Publication Date:
October 05, 2015
Filing Date:
March 14, 2014
Export Citation:
Assignee:
NISCA CORP
International Classes:
G03B9/02; G03B9/06
Attorney, Agent or Firm:
Satoshi Asakawa