Title:
LENS BARREL
Document Type and Number:
Japanese Patent JP3140245
Kind Code:
B2
Abstract:
PURPOSE: To provide a lens barrel which can effectively shield light by utilizing a small space in the lens barrel without increasing the sliding resistance of a moving frame.
CONSTITUTION: The lens barrel is constituted of a fixed frame 2, the moving frame 1 moved forward and backward in the direction of an optical axis 0 with respect to the fixed frame 2 and light shielding films 3 and 4 which are the thin film-like members disposed between the frames 2 and 1 and superposed in the direction of the optical axis 0, whose outside circumferential base end parts are fixed to the frame 2 and whose inside circumference-side tips are inserted in the outside circumference 1a of the frame 1 by being elastically deformed. The film 4 is provided with a notch 4a or the like inclined by a prescribed angle with respect to the normal direction of the inside circumference thereof and inserted so as to be slid and brought into contact with the outside circumferential surface 1a of the frame 1. Since the notch 4a or the like is inclined, the external light entering the notch can be efficiently shielded.
Inventors:
Kazuya Nishimura
Michiharu Saito
Michiharu Saito
Application Number:
JP6063093A
Publication Date:
March 05, 2001
Filing Date:
March 19, 1993
Export Citation:
Assignee:
Olympus Optical Co., Ltd.
International Classes:
G02B7/02; (IPC1-7): G02B7/02
Domestic Patent References:
| JP664239U | ||||
| JP62164305U |
Attorney, Agent or Firm:
Susumu Ito