Title:
LIGHT SHIELDING DEVICE OF LENS BARREL
Document Type and Number:
Japanese Patent JP2006171196
Kind Code:
A
Abstract:
To provide a light shielding device of a lens barrel capable of reducing a load upon zoom barrel operation by the use of a light shielding rubber of a zoom barrel.
A rib on an inner diameter part of a light shielding rubber is formed in a helical shape so as to fit the helicoid rotation direction of the barrel, thereby, a back and forth sliding amount of the light shielding rubber is reduced and the operation load is reduced.
Inventors:
IKUI AKIHIRO
Application Number:
JP2004361440A
Publication Date:
June 29, 2006
Filing Date:
December 14, 2004
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/02; G02B7/10
Attorney, Agent or Firm:
Keizo Nishiyama
Yuichi Uchio
Yuichi Uchio
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