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Title:
LENS BARRIER DEVICE AND IMAGING DEVICE WITH THE SAME
Document Type and Number:
WIPO Patent Application WO/2006/028004
Kind Code:
A1
Abstract:
A lens barrier device (1) having swingable sectors (11-14), a swing member (3) for swinging the sectors, and a drive means (6) for driving the swing member (3), wherein a drive transmission member (9W) for irreversibly transmitting drive force from the drive means (6) to the swing member (3) is provided between the swing member (3) and the drive means (6). In the lens barrier device (1), the drive transmission member irreversibly transmits drive force from the drive means to the swing member. In such a structure, since unstable movement of the swing member is restricted by the drive transmission member, a situation such as that the sectors are opened in a closed state can be prevented. Further, the drive means is stably driven by the drive transmission member, and as a result the sectors can be stably swung.

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Inventors:
Kurosawa, Yoshihisa c/o SEIKO PRECISION INC. (1-1 Akanehama 1-chome, Narashino-sh, Chiba 58, 27585, JP)
Oishi, Seiichi c/o SEIKO PRECISION INC. (1-1 Akanehama 1-chome, Narashino-sh, Chiba 58, 27585, JP)
Tada, Satoru c/o SEIKO PRECISION INC. (1-1 Akanehama 1-chome, Narashino-sh, Chiba 58, 27585, JP)
Application Number:
PCT/JP2005/016078
Publication Date:
March 16, 2006
Filing Date:
September 02, 2005
Export Citation:
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Assignee:
SEIKO PRECISION INC. (1-1 Akanehama 1-chome, Narashino-shi Chiba, 58, 27585, JP)
Kurosawa, Yoshihisa c/o SEIKO PRECISION INC. (1-1 Akanehama 1-chome, Narashino-sh, Chiba 58, 27585, JP)
Oishi, Seiichi c/o SEIKO PRECISION INC. (1-1 Akanehama 1-chome, Narashino-sh, Chiba 58, 27585, JP)
Tada, Satoru c/o SEIKO PRECISION INC. (1-1 Akanehama 1-chome, Narashino-sh, Chiba 58, 27585, JP)
International Classes:
G03B11/04; G02B7/02; H04N5/225
Foreign References:
JP2004184585A
US5971630A
JP2000180915A
EP0788020A1
JP2003114460A
JPH052130U
JP2001005047A
US20050005260A1
Attorney, Agent or Firm:
Katayama, Shuhei (Mitsui Sumitomo Marine Tepco Building, 6-1 Kyobashi 1-chom, Chuo-ku Tokyo 31, 10400, JP)
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