Apparatus for positive vignetting

Details Apparatus for positive vignetting Apparatus for positive vignetting

1981-12-03

1984-03-13

Gonzales, John

G03B 1100

Patent

active

044364008

ABSTRACT:
The apparatus of the present invention is for use with a subject and a camera, including a lens and a shutter, for positive vignetting comprising a means adjacent the camera lens for at least partially obstructing subject light received by the camera lens in regions of the camera lens to be positive vignetted, a means for providing auxiliary light to the region adjacent the camera lens, and a means for directing a pattern of the auxiliary light to the camera lens in the regions of the camera lens to be positive vignetted. The method of the present invention is for use with a subject and a camera including a lens for providing positive vignetting comprising the steps of partially obstructing subject light from the camera lens in a region of the camera lens to be positive vignetted, and, introducing auxiliary light to the region to be positive vignetted.

REFERENCES:
patent: 2556307 (1951-06-01), Walker
patent: 2821105 (1958-01-01), Walker
patent: 2972931 (1961-02-01), Roob
patent: 4155029 (1979-05-01), Yamaoka
patent: 4204761 (1980-05-01), Walker

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