Zoom control system

Details Zoom control system Zoom control system

1991-06-05

1993-08-31

Gray, David M.

Optical: systems and elements

Prism

With reflecting surface

359697, G03B 118

Patent

active

052413357

ABSTRACT:
A zoom control system for providing variable speed zoom control of a zoom lens system in a camera, or the like, comprises a single actuating means, timing control electronics, and speed control electronics. The zoom control system effects variable speed zooming in response to time dependent actuation of the zooming operation.

REFERENCES:
patent: 3209367 (1965-09-01), Heden
patent: 3418032 (1968-12-01), Kajiro
patent: 4445757 (1984-05-01), Enomoto et al.
patent: 4831402 (1989-05-01), Fujita et al.
patent: 4935763 (1990-06-01), Itoh et al.

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