OPTICAL EQUIPMENT, AND IMAGING DEVICE HAVING THE SAME

Japanese Patent JP2014074793

A

To attain reduction in thickness in an optical axis direction of optical equipment and an imaging device having the same.

Optical equipment which has a first optical member (10), a second optical member (20), and light quantity means (23) disposed between the first optical member and the second optical member; wherein one of the first optical member and the second optical member has a concave curved shape on a light adjustment means side; the other of the first optical member and the second optical member has a convex curved shape on the light adjustment means side; the light quantity adjustment means has a plurality of blade members (233) each having a convex curved shape on the one optical member side; the blade members are respectively rotated to thereby vary the size of an opening allowing a light flux to pass; and a radius of curvature of the convex curved shape possessed by the blade member is smaller than a radius of curvature of the concave curved shape possessed by the one optical member, and larger than a radius of curvature of the convex curved shape possessed by the other optical member.

KATANO KENICHI
FUKAI YOSUKE
ADACHI KEISUKE

JP2012221998A

April 24, 2014

October 04, 2012

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CANON KK

G02B7/10; G02B7/04; G03B5/00; G03B9/02; G03B9/06

JP2014013363A	2014-01-23
JP2007094074A	2007-04-12
JP2007500869A	2007-01-18
JP2007232773A	2007-09-13
JP2008180774A	2008-08-07
JP2011039086A	2011-02-24
JP2012083708A	2012-04-26
JP2010156874A	2010-07-15

WO2013005436A1

2013-01-10

Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya

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