Power zooming device

Details Power zooming device Power zooming device

1991-02-15

1993-03-30

Gellner, Michael L.

35428912, G03B 118

Patent

active

051988470

ABSTRACT:
A power zooming device for a camera having a zoom lens and electric drive for zooming the zoom lens. An operation switch is movable in opposite directions from a neutral position. A control switch determines a zooming operation for actuation of the electric drive, when the operation switch has been displaced, on the basis of the positions of the operation switch before and after displacement thereof.

REFERENCES:
patent: 4002405 (1977-01-01), Stahl
patent: 4365884 (1982-12-01), Knapp
patent: 4568165 (1986-02-01), Ishibashi
patent: 4851869 (1989-07-01), Ishimaru et al.
patent: 4857951 (1989-08-01), Nakajima et al.
patent: 4861146 (1989-08-01), Hatase et al.
patent: 4936664 (1990-06-01), Haraguchi et al.
English Abstract of Japanese Patent 62-272215, May 13, 1988.

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