Title:
LENS BARREL
Document Type and Number:
Japanese Patent JP2014178715
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress the occurrence of slip between a roller and a member abutting on the roller, when a manual operation is performed while a roller bearing ring butts against an actuation end.SOLUTION: A lens barrel includes: an oscillatory wave motor for driving a lens; a manual ring 102 for moving the lens in the direction of an optical axis through a manual operation; a slip ring 103 contacting the manual ring; a roller 105 abutting on the slip ring 103 and driven by the oscillatory wave motor; a roller bearing ring 104 bearing the roller 105; and pressure means for bringing the roller 105 into press-contact with the slip ring 103. The slip ring 103 is configured so that the frictional resistance of the abutment surface of the manual ring 102 and the slip ring 103 is lower than the frictional resistance of the abutment surface of the roller 105 and the slip ring 103.
Inventors:
SUGITA JUN
Application Number:
JP2014137388A
Publication Date:
September 25, 2014
Filing Date:
July 03, 2014
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/04; G02B7/02
Domestic Patent References:
| JPH02253214A | 1990-10-12 | |||
| JPH08114739A | 1996-05-07 |
Attorney, Agent or Firm:
Takuma Abe
Kuroiwa 創吾
Kuroiwa 創吾