Title:
An imaging device provided with optical apparatus and it
Document Type and Number:
Japanese Patent JP6099924
Kind Code:
B2
Abstract:
An optical apparatus includes a first optical member (10) on which a concave curved surface is formed, a second optical member (20) on which a convex curved surface is formed, and a light amount adjuster (23) that includes a plurality of blade members (233) each having a convex curved shape portion and that changes size of an aperture to pass a light beam by a rotation of the blade members (233), the first and second optical members are disposed side by side in an optical axis direction so that the concave curved surfaces of the first and second optical members face each other, the light amount adjuster is disposed between the first and second optical members, and a radius of curvature of the convex curved shape portion of the blade member is smaller than that of the first optical member and is larger than that of the second optical member.
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Inventors:
Kenichi Katano
Yosuke Fukai
Keisuke Adachi
Yosuke Fukai
Keisuke Adachi
Application Number:
JP2012221998A
Publication Date:
March 22, 2017
Filing Date:
October 04, 2012
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B7/10; G02B7/04; G03B5/00; G03B9/02; G03B9/06
Domestic Patent References:
| JP2014013363A | ||||
| JP2007094074A | ||||
| JP2007500869A | ||||
| JP2007232773A | ||||
| JP2008180774A | ||||
| JP2011039086A | ||||
| JP2012083708A | ||||
| JP2010156874A |
Foreign References:
| WO2013005436A1 |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya
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