Detector using bar code for detecting the maximum/minimum diaphr

Details Detector using bar code for detecting the maximum/minimum diaphr Detector using bar code for detecting the maximum/minimum diaphr

1997-05-02

1998-03-24

Malley, Daniel P.

Photography

Camera detail

Lens mount

396505, 396529, G03B 793

Patent

active

057323038

ABSTRACT:
A detector for detecting the maximum/minimum diaphragm adjustment value of an exchange lens of a camera includes a bar code, in which the maximum/minimum diaphragm adjustment value of an exchange lens is printed in a binary code, formed on the lens and a bar code reader on the camera for reading and decoding the bar code. The bar code reader outputs an electric pulse signal corresponding to the bar code by radiating a fixed scanning line at the bar code.

REFERENCES:
patent: 4236803 (1980-12-01), Shimomura

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