Light intercepting apparatus of movable lens barrel

Details Light intercepting apparatus of movable lens barrel Light intercepting apparatus of movable lens barrel

1993-10-15

1995-05-30

Blankenship, Howard B.

Optical: systems and elements

Prism

With reflecting surface

359813, G03B 118

Patent

active

054206561

ABSTRACT:
A light intercepting apparatus of a lens barrel is provided having a movable lens barrel which moves along an optical axis of the lens barrel, and an annular light intercepting member that elastically contacts an outer peripheral surface of the movable lens barrel. At least the portion of the annular light intercepting member, that is in contact with the outer peripheral surface of the lens barrel, consists of a material containing fluorine.

REFERENCES:
patent: 4911542 (1990-03-01), Nishio et al.
patent: 4944030 (1990-07-01), Haraguchi et al.
patent: 5033819 (1991-07-01), Tanaka
patent: 5034762 (1991-07-01), Kohmoto
patent: 5115350 (1992-05-01), Tanaka
patent: 5289318 (1994-02-01), Sekine et al.

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