Device in a camera for imparting pictures on a photographic film

Details Device in a camera for imparting pictures on a photographic film Device in a camera for imparting pictures on a photographic film

1976-09-28

1978-06-27

O'Connor, Edna M.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356249, G03B 1724

Patent

active

040978796

ABSTRACT:
A transparent liquid container half-filled with opaque liquid is provided in front of a film in a camera body to cover a small portion of the area of a single frame. The shadow of the opaque liquid is recorded on the film when a focal plane shutter is opened to expose the film to take a picture. Alternatively, an arrow shaped rotatable member having a weighted tail end is provided in front of the film. The shadow of the opaque liquid or that of the arrow shaped member indicates the top and bottom of the picture recorded on the film.

REFERENCES:
patent: 1674540 (1928-06-01), Bagley
patent: 1886052 (1932-11-01), Sconnell
patent: 3661061 (1972-05-01), Tokarz
patent: 3675549 (1972-07-01), Adair
patent: 3866602 (1975-02-01), Furihata
patent: 3891328 (1975-06-01), Hall

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