Title:
FOCAL PLANE SHUTTER
Document Type and Number:
WIPO Patent Application WO/2008/032521
Kind Code:
A1
Abstract:
A focal plane shutter (1) has a base (10) with an opening (11), blades (21-24, 61-64)
for forming a front screen (20) and a rear screen (60) that run from either one of
a superposed state and a spread state to the other to open the opening (11), and
drive arms (40, 50, 80, 90) for driving the front screen (20) and the rear screen
(60), respectively. A blade reinforcement member (30) is joined to the blade
(21) having the largest range of movement among the group of the blades constituting
the front screen (20).
Inventors:
OISHI SEIICHI (JP)
Application Number:
PCT/JP2007/065941
Publication Date:
March 20, 2008
Filing Date:
August 16, 2007
Export Citation:
Assignee:
SEIKO PRECISION KK (JP)
OISHI SEIICHI (JP)
OISHI SEIICHI (JP)
International Classes:
G03B9/36
Foreign References:
| JPS55155232U | 1980-11-08 | |||
| JPH04355734A | 1992-12-09 | |||
| JPH11194393A | 1999-07-21 | |||
| JPH0511132U | 1993-02-12 | |||
| JP2002268113A | 2002-09-18 |
Attorney, Agent or Firm:
KATAYAMA, Shuhei (6-1 Kyobashi 1-chome,Chuo-ku, Tokyo 31, JP)
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