Title:
OPTICAL INSTRUMENT
Document Type and Number:
Japanese Patent JP2021189255
Kind Code:
A
Abstract:
To provide an optical instrument that can prevent a deterioration in operability due to scratches and dents.SOLUTION: An optical instrument comprises a photographic optical system, and has at least three roller parts that are arranged in a first holding member, and an operation member that has groove parts engaged with the roller parts and rotates around an optical axis to move a part of the photographic optical system in a direction along the optical axis. The roller parts include a first roller part and a second roller part that slide in contact with the groove parts, and the second roller part has a different rigidity from that of the first roller part.SELECTED DRAWING: Figure 9
Inventors:
KITAYAMA TOMA
Application Number:
JP2020092899A
Publication Date:
December 13, 2021
Filing Date:
May 28, 2020
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/02; G02B7/04
Attorney, Agent or Firm:
Ryoichi Takaoka
Nao Oda
Rena Miyoshi
Nao Oda
Rena Miyoshi