Lens barrel for flash photography

Details Lens barrel for flash photography Lens barrel for flash photography

1979-04-19

1980-10-14

Hix, L. T.

G03B 300

Patent

active

042277914

ABSTRACT:
A lens barrel in which a distance ring is coupled to an aperture ring so that correct exposure can be obtained in flash photography. In the arrangement, a rotating member, which rotates integrally with the aperture ring, and the distance ring can rotate functionally with respect to each other through a fixed cylinder and an engaging member which can move in the direction of optical axis with respect to the fixed cylinder.

REFERENCES:
patent: 3680459 (1972-08-01), Okura
patent: 4141636 (1979-02-01), Shimojima

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