Data recording device for cameras

Details Data recording device for cameras Data recording device for cameras

1980-12-08

1982-05-04

Adams, Russell E.

354 25, 354109, 354195, G03B 1724

Patent

active

043279791

ABSTRACT:
For a photographic lens movable from a first position toward a second position by a shutter release action, the first position is set outside the actual focusing range of the lens from the nearest focused position to the infinity focused position to render the lens pre-movable over a specified distance from the first position to the actual focusing range. Lens position signal generating means operatively related to the movement of the lens generates an electric signal corresponding to the position to which the lens is moved. During the pre-movement of the lens, the position signal generating means emits a signal for initiating a data recording light source into operation so that the light source can be lighted for a substantially prolonged period of time.

REFERENCES:
patent: 3889281 (1975-06-01), Taguchi et al.
patent: 3953868 (1976-04-01), Kawamura et al.
patent: 4025931 (1977-05-01), Taguchi et al.
patent: 4235544 (1980-11-01), Yamada et al.

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