Photographic camera apparatus

Details Photographic camera apparatus Photographic camera apparatus

1981-03-03

1982-07-06

Gonzales, John

G03B 300

Patent

active

043380115

ABSTRACT:
Photographic camera apparatus for use with a camera having an optical path along which film can be positioned for exposure. The apparatus comprises a scanning type shutter blade arrangement displaceable during an exposure cycle to define a progressively increasing aperture in alignment with the optical path to facilitate film exposure and a variable focus optical system coupled with the shutter blade arrangement such that the focus of the optical system is continuously changed in response to displacement of the shutter blade arrangement. The apparatus is structured so that the optical system focuses for predetermined subject distances as predetermined sizes of the shutter blade arrangement aperture occur.

REFERENCES:
patent: 1771844 (1930-07-01), Eilenberg et al.
patent: 3305294 (1967-02-01), Alvarez
patent: 3507565 (1970-04-01), Alvarez et al.
patent: 3583299 (1971-06-01), Land
patent: 3583790 (1971-06-01), Baker
patent: 3617116 (1971-11-01), Jones
patent: 3721169 (1973-03-01), Johnson
patent: 3750543 (1973-08-01), Eloranta et al.
patent: 3903218 (1975-09-01), Humphrey
patent: 4064520 (1977-12-01), Freudenschuss et al.
patent: 4167316 (1979-09-01), Johnson et al.
patent: 4188103 (1980-02-01), Biber et al.
patent: 4191462 (1980-03-01), Johnson

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