Flash device for camera

Details Flash device for camera Flash device for camera

1989-12-19

1991-01-08

Gellner, Michael L.

35414911, G03B 1505

Patent

active

049839985

ABSTRACT:
The present patent application discloses a flash device for camera, or a camera, including a light emitter for flash photography mounted about a pivot shaft on the camera body and a light condenser mounted about a pivot shaft on the photographic lens barrel which moves to vary the light distribution characteristics of the light emitter as the focal length of the photographic optical system varies, wherein when the flash device is in use, the light condenser moves as the focal length of the photographic optical system varies, thus making it possible to obtain the light distribution characteristic which is suited to the focal length of the photographic optical system, while when not in use, the light emitter and the light condenser are turned to be integrally housed in an appropriate plate of either the lens barrel or the camera body.

REFERENCES:
patent: 3720145 (1973-03-01), Johnson et al.
patent: 4914461 (1990-04-01), Hori

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