Camera having a diffusing plate with rotationally asymmetric lig

Details Camera having a diffusing plate with rotationally asymmetric lig Camera having a diffusing plate with rotationally asymmetric lig

1980-04-10

1982-01-05

Hix, L. T.

354155, 354199, G03B 700, G03B 1302

Patent

active

043090931

ABSTRACT:
A photographic camera provided with a finder system having, at the focal plane of the imaging lens, a light diffusing plate having a rotationally asymmetric diffusion property or a rotationally asymmetric angular distribution of diffused light. Such a camera is provided with a photosensor for light measuring therewithin. The diffusing plate diffuses light so that the photosensor receives an appropriate quality of light, and so that the light is distributed in the manner that the operator can easily focus the camera.

REFERENCES:
patent: 3698810 (1972-10-01), Bestenreiner et al.
patent: 3718078 (1973-02-01), Plummer
patent: 4027327 (1977-05-01), Harada
patent: 4109257 (1978-08-01), Okuno et al.
patent: 4121234 (1978-10-01), Altman et al.

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