Recording system for photographic cameras

Details Recording system for photographic cameras Recording system for photographic cameras

1974-08-09

1977-01-04

Adams, Jr., Russell E.

354107, 354109, G03B 1724

Patent

active

040018466

ABSTRACT:
Several improvements are disclosed for a system which automatically photographically records information such as the aperture and shutter speed settings of a photographic camera on film negatives as they are exposed. The improvements include a light diffusing aperture structure for use with light emitting diode displays and several embodiments and structural features of selector switches which are used to control the light emitting diode displays. An electrical circuit is also disclosed illustrating the manner in which the various components of the present invention are combined and function in cooperation with a photographic camera.

REFERENCES:
patent: 2298588 (1942-10-01), Raymond
patent: 2784306 (1957-03-01), Johnson
patent: 3452196 (1969-06-01), Gray
patent: 3488253 (1970-01-01), Tone et al.
patent: 3720827 (1973-03-01), Hemphill
patent: 3750553 (1973-08-01), Pfeifer
patent: 3827070 (1974-07-01), Hoerenz
patent: 3882512 (1975-05-01), Lawrence et al.
patent: 3909137 (1975-09-01), Kisanuki
patent: 3953868 (1976-04-01), Kawamura et al.

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