Camera having a built-in strobe and lens for use therewith

Details Camera having a built-in strobe and lens for use therewith Camera having a built-in strobe and lens for use therewith

1991-07-08

1992-12-29

Adams, Russell E.

3541491, G03B 1503

Patent

active

051755815

ABSTRACT:
A strobe built-in camera includes a camera body having a strobe built therein and at least one photographing lens to be detachably mounted on the camera body. The camera comprises a strobe use-warning device for warning unsuitability of use of the strobe in case of the the photographing lens mounted on the camera body reduces a quantity of light emitted from the strobe to a value less than a correct quantity of light to be irradiated upon an object, or that a spreading zone of the light from the strobe is narrower than a field of view of the photographing lens. Therefore, photographing under inappropriate photographing conditions is prevented and superfluous use of films can be avoided.

REFERENCES:
patent: 3823411 (1974-07-01), Hasegawa et al.
patent: 4893140 (1990-01-01), Yamamoto et al.
patent: 4910542 (1990-03-01), Yamamoto et al.
patent: 4978981 (1990-12-01), Satoh et al.
patent: 4994846 (1991-02-01), Kobayashi et al.
patent: 5012262 (1991-04-01), Mogamiya et al.
patent: 5021814 (1991-06-01), Sato

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