Title:
光量調節装置および光学機器
Document Type and Number:
Japanese Patent JP7301606
Kind Code:
B2
Abstract:
A light amount adjusting apparatus includes a base member, light amount adjusting blades configured to form an aperture through which light passes, a blade driving member configured to rotate relative to the base member to drive the light amount adjusting blades, a cam member including a cam attached to the base member and configured to rotate the light amount adjusting blades driven by a rotation of the blade driving member so as to change a size of the aperture, and an adjuster configured to change a mount phase of the cam member relative to the base member in a rotational direction of the blade drive member.
Inventors:
Katsuhiko Sato
Application Number:
JP2019103418A
Publication Date:
July 03, 2023
Filing Date:
June 03, 2019
Export Citation:
Assignee:
Canon Inc
International Classes:
G03B9/02; H04N23/55
Domestic Patent References:
| JP4013931U | ||||
| JP57167419U | ||||
| JP5043136U |
Foreign References:
| WO2020170585A1 |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Tomoya Hirayama
Atsuya Mizumoto
Tomoya Hirayama
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