Lens information introducing device having corrected extraneous

Details Lens information introducing device having corrected extraneous Lens information introducing device having corrected extraneous

1979-07-19

1980-12-02

Gellner, Michael L.

354 23D, 354289, G03B 7093, G03B 1700, G03B 1718

Patent

active

042368049

ABSTRACT:
A lens information introducing device in a camera comprises a photoelectrically legible digital code pattern provided on a lens, optical means for introducing the code pattern into a camera body and imaging the same at a predetermined position, photoelectric converter means disposed at the predetermined position for photoelectrically converting the image of the code pattern formed by the optical means, and shaping means for comparing the photoelectrically converted signal by the photoelectric converter means with a standard signal and generating the lens information indicated by the code pattern as a digital signal.

REFERENCES:
patent: 3840298 (1974-10-01), Okuno
patent: 3928858 (1975-12-01), Sakurada et al.
patent: 4104649 (1978-08-01), Tanaka et al.

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