Underwater camera having through-the-lens viewing

Details Underwater camera having through-the-lens viewing Underwater camera having through-the-lens viewing

1991-06-21

1992-11-24

Adams, Russell E.

354161, G03B 1708, G03B 1744

Patent

active

051667142

ABSTRACT:
An underwater camera includes a housing supporting an exposure mechanism therein. The exposure mechanism includes a support frame and a conventional film transport and shutter mechanism. A motor drive system is operative upon the film transport and shutter mechanism to alternatively raise or lower the transport mechanism with respect to the camera imaging lens. A viewer is optically coupled to the imaging lens. In one position of the film transport, a focusing screen is positioned in alignment with the imaging lens to provide through the lens viewing while in the alternative position of the film transport, the to-be-exposed film and shutter assembly is interposed between the imaging lens and the viewer to properly expose the film.

REFERENCES:
patent: 1885286 (1932-11-01), Petit et al.
patent: 1900730 (1933-03-01), Petit et al.
patent: 2287640 (1942-06-01), Raynes
patent: 3650186 (1972-03-01), Stelck
patent: 3759605 (1973-09-01), Johnson
patent: 4947783 (1990-08-01), Gell, Jr.
patent: 4994829 (1991-02-01), Tsukamoto
patent: 5027139 (1991-06-01), Varouxis et al.

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