Title:
絞り装置及びそれを有するレンズ装置及び撮像装置
Document Type and Number:
Japanese Patent JP6494581
Kind Code:
B2
Abstract:
A stop apparatus including stop blades; a supporting member supporting stop blades rotatably about rotating centers; and a rotating member rotating the stop blades, one of the stop blades or the rotating members, having protruded parts, and the other having recessed parts engaging with the protruded parts, the stop blades including: close blades forming close state by rotating in a direction of closing an opening both during stopping down the opening from open state to predetermined opening diameter state and during stopping down the opening from the predetermined opening diameter state to the close state; and non-close blades rotating in the direction of closing the opening during stopping down the opening from the open state to the predetermined opening diameter state and rotating in a direction of opening the opening during stopping down the opening from the open state from the predetermined opening diameter state to the close state.
Inventors:
Kamo Daichi
Application Number:
JP2016191613A
Publication Date:
April 03, 2019
Filing Date:
September 29, 2016
Export Citation:
Assignee:
Canon Inc
International Classes:
G03B9/02
Domestic Patent References:
| JP4133038A | ||||
| JP59172633A | ||||
| JP59165036A | ||||
| JP61256333A | ||||
| JP63157134A | ||||
| JP54005722A | ||||
| JP2004264713A | ||||
| JP2006126653A | ||||
| JP2002350718A | ||||
| JP55063517U |
Foreign References:
| US4199247 | ||||
| US6102554 |
Attorney, Agent or Firm:
Okabe
Takao Ochi
Koji Yoshizawa
Masami Saito
Takao Ochi
Koji Yoshizawa
Masami Saito