Title:
LIGHT SHIELDING DEVICE FOR LENS BARREL
Document Type and Number:
Japanese Patent JP3406671
Kind Code:
B2
Abstract:
PURPOSE: To provide a light shielding device for lens barrel capable of surely preventing the intrusion of external light between a fixed barrel and a movable barrel while restraining a length in the optical axis direction.
CONSTITUTION: A leakage light preventing means in a light shielding device for lens barrel is provided with a first and a second light shielding ring members 86, 81 capable of sliding, engaged with a movable barrel 31, located on different positions in the optical axis direction and fixed on a fixed barrel 21, the inner periphery of the first light shielding ring member 86 located in the front is bent backward and the second light shielding ring member 81 located in the rear is provided with a housing space part 48 for housing the backward bending part 86b.
Inventors:
Hitoshi Tanaka
Application Number:
JP1649594A
Publication Date:
May 12, 2003
Filing Date:
February 10, 1994
Export Citation:
Assignee:
Pentax Corporation
International Classes:
G02B7/02; G02B7/04; G03B17/04; (IPC1-7): G02B7/02; G02B7/04; G03B17/04
Domestic Patent References:
| JP561711U | ||||
| JP437915U |
Attorney, Agent or Firm:
Kunio Miura
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