Lens mount barrel for photographing with flash lamp

Details Lens mount barrel for photographing with flash lamp Lens mount barrel for photographing with flash lamp

1980-07-24

1982-02-09

Griffin, Donald A.

354196, G03B 1503, G03B 902

Patent

active

043147496

ABSTRACT:
A lens mount barrel for flash photographing in which the relative positions of a flash source and a photographing lens are made variable and the photographic magnification or distance value can be set to preferred values within a general sequence of frequently-used numbers on a stopdown scale while simultaneously a click stop of the magnification scale is accomplished by a click stop on the stopdown scale. An operational sleeve and a stopdown sleeve cooperate with one another for focusing. A click stop mechanism is provided in the operational sleeve for click stopping the stopdown sleeve at positions corresponding to predetermined positions on the magnification scale.

REFERENCES:
patent: 2989908 (1961-06-01), Bolsey
patent: 3447441 (1969-06-01), Ort
patent: 3633483 (1972-01-01), Nagashima
patent: 3680459 (1972-08-01), Okura
patent: 3906529 (1975-09-01), Filipovich
patent: 4141636 (1979-02-01), Shimojima
patent: 4227791 (1980-10-01), Komoto

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