Incorrect lens setting detection device for wide-angle/telephoto

Details Incorrect lens setting detection device for wide-angle/telephoto Incorrect lens setting detection device for wide-angle/telephoto

1984-10-03

1985-10-01

Perkey, William B.

354268, G03B 300

Patent

active

045442495

ABSTRACT:
A camera has first and second switches which turn ON/OFF in association with a wide-angle/telephotography changeover member. The first switch turns ON when the wide-angle/telephotography changeover member is in the wide-angle position, and the second switch turns ON when the wide-angle/telephotography changeover member is in the telephoto position. An incorrect lens setting signal is generated when both the first and the second switches are OFF. Upon generation of the incorrect lens setting signal, an incorrect position display is actuated and the operation of the camera is stopped.

REFERENCES:
patent: 3836934 (1974-09-01), Suzuki et al.
patent: 3903537 (1975-09-01), Ettischer

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