Title:
SHUTTER DEVICE
Document Type and Number:
Japanese Patent JP2004138779
Kind Code:
A
Abstract:
To improve the durability of a light shielding blade without spoiling the increase of shutter speed.
In a shutter device having a light shielding blade 1 and a driving means for opening/closing the blade 1, a reinforcing member 9 is attached only to the partial area (the area shown by oblique lines including 1a to 1d) of the blade 1 including a part easily deteriorated by repeating the opening/closing driving of the blade 1, whereby the blade 1 is made lighter in weight and hardly deteriorative even when the opening/closing driving of the blade 1 is repeated.
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Inventors:
SATO HIRONOBU
Application Number:
JP2002302856A
Publication Date:
May 13, 2004
Filing Date:
October 17, 2002
Export Citation:
Assignee:
CANON DENSHI KK
International Classes:
G03B9/26; G03B9/10; G03B9/70; (IPC1-7): G03B9/26; G03B9/10
Attorney, Agent or Firm:
Minoru Nakamura
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