Title:
MIRROR FRAME DEVICE
Document Type and Number:
Japanese Patent JP2000275495
Kind Code:
A
Abstract:
To provide a mirror frame device having a simple structure and a small number of part items and capable of being driven by a structure comprising a backlash-free cam and cam followers.
A cam ring 1 serves as a barrel having cam grooves 11 for driving a cam follower 30a. Spring portions are provided near the cam grooves 11 as spring means for exerting a predetermined holding force so that cam followers 30b are held in the cam grooves 11. The cam grooves 11 are continuous grooves or holes opened through the peripheral surface of the cam ring 1. The spring portions are formed of a plurality of holes opened adjacent to the cam grooves 11.
Inventors:
TAKANASHI TATSUO
Application Number:
JP7671899A
Publication Date:
October 06, 2000
Filing Date:
March 19, 1999
Export Citation:
Assignee:
OLYMPUS OPTICAL CO
International Classes:
G02B7/04; G02B7/02; (IPC1-7): G02B7/04
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)