Title:
LIGHT INTENSITY ADJUSTMENT DEVICE AND OPTICAL INSTRUMENT
Document Type and Number:
Japanese Patent JP2016122148
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress a movement of a blade member from becoming unstable due to a joint layer of the blade member.SOLUTION: There is provided a light intensity adjustment device comprising an opening that passes light therethrough and a blade member that can be displaced in a direction to open/close the opening, where the blade member includes: a main body layer; a reinforcement layer that is disposed at a portion where the blade member is in contact with another part of the light intensity adjustment device and has a smaller area than that of the main body layer; and a joint layer that is interposed between the main body layer and the reinforcement layer to joint the two layers; the joint layer is formed not to contact the another part.SELECTED DRAWING: Figure 6
Inventors:
MARUYAMA NAOAKI
ARAI KATSUMI
ARAI KATSUMI
Application Number:
JP2014263312A
Publication Date:
July 07, 2016
Filing Date:
December 25, 2014
Export Citation:
Assignee:
CANON DENSHI KK
International Classes:
G03B9/10; G03B9/02
Domestic Patent References:
| JP2008299033A | 2008-12-11 | |||
| JP2009182143A | 2009-08-13 | |||
| JP2004335602A | 2004-11-25 | |||
| JPH0659312A | 1994-03-04 | |||
| JP2007121895A | 2007-05-17 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu