Lens barrel attachable to and detachable from main body of optic

Details Lens barrel attachable to and detachable from main body of optic Lens barrel attachable to and detachable from main body of optic

1996-12-27

1999-12-14

Perkey, W. B.

Photography

Having variable focal length of camera objective

396529, G03B 1700

Patent

active

060028858

ABSTRACT:
A lens barrel attachable to and detachable from a main body including a lens system, and a transparent plate provided closer to the main body than a rearmost lens unit of the lens system.

REFERENCES:
patent: 4536057 (1985-08-01), Sumi et al.
patent: 4920369 (1990-04-01), Kaneda et al.
patent: 5212598 (1993-05-01), Kikuchi
patent: 5402174 (1995-03-01), Takahashi
patent: 5677791 (1997-10-01), Yoshibe et al.
patent: 5781236 (1998-07-01), Shinbori et al.

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