Device for controlling a zoom lens

Details Device for controlling a zoom lens Device for controlling a zoom lens

1995-03-02

1997-02-04

Epps, Georgia Y.

Optical: systems and elements

Lens

With support

G02B 702

Patent

active

056004966

ABSTRACT:
A zoom lens device includes an imaging device for converting light from an object to an electrical signal, a zoom lens and a focusing lens disposed between the object and the imaging device, a zooming adjusting circuit for adjusting a movement of the zoom lens, focus adjusting circuits for adjusting movements of the focusing lens, correcting circuits for outputting an adjustment value in response to adjustment of the zoom lens, a temperature detecting circuit for detecting a temperature around the object, and a coefficient circuit for correcting a correction value of the correcting circuit based on an output signal of the temperature detecting circuit.

REFERENCES:
patent: 3944324 (1976-03-01), Tajima et al.
patent: 4885600 (1989-12-01), Iwasa et al.
patent: 4907867 (1989-12-01), Perrin et al.
patent: 5124738 (1992-06-01), Yamashita
Patent Abstracts of Japan, vol. 9, No. 296, Nov. 22, 1985 (Furuya).

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