Title:
レンズ鏡筒
Document Type and Number:
Japanese Patent JP6989015
Kind Code:
B2
Abstract:
A lens barrel is capable of changing the aperture diameter according to a zoom position while having a short length. A lens barrel includes: a aperture unit having a cam follower; and a moving tube having a cam groove for engaging the cam follower, the moving tube being provided at the outer circumference of the aperture unit and able to move along the optical axis direction.
Inventors:
Kunihiko Shimizu
Japanese hot water Mizui
Japanese hot water Mizui
Application Number:
JP2020527329A
Publication Date:
January 05, 2022
Filing Date:
June 04, 2019
Export Citation:
Assignee:
NIKON CORPORATION
International Classes:
G02B7/04; G02B7/02; G02B7/08; G03B9/06
Domestic Patent References:
| JP2017097243A | ||||
| JP5754120U | ||||
| JP5891435A | ||||
| JP20128335A | ||||
| JP6195325A | ||||
| JP53145843U | ||||
| JP53123933U |
Attorney, Agent or Firm:
Ryota Kato
Kumiko Motoki
Kumiko Motoki
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