Zoom lens camera

Details Zoom lens camera Zoom lens camera

1992-07-29

1994-04-19

Gellner, Michael L.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

354400, 318257, G03B 118, G03B 1318, H02P 100

Patent

active

053050380

ABSTRACT:
A zoom lens camera including a zoom taking lens having a zooming function, a motor for driving the zoom taking lens, a telephoto switch which is actuated to effect the motor to drive the zoom taking lens in a manner that increases the focal length thereof, a wide angle switch which is actuated to effect the motor to drive the zoom taking lens in a manner that decreases the focal length thereof, and a zooming speed controller for varying the zooming speed of the zoom taking lens when a predetermined condition is satisfied during the zooming operation when one of the telephoto switch or wide angle switch is actuated.

REFERENCES:
patent: 3594625 (1971-07-01), Richardson
patent: 4206982 (1980-06-01), Osanai
patent: 4445757 (1984-05-01), Enomoto et al.
patent: 4952962 (1990-08-01), Suzuki et al.
patent: 4962399 (1990-10-01), Numako et al.
patent: 5019765 (1991-05-01), Ogasawara
patent: 5136320 (1992-08-01), Kobayashi et al.
patent: 5148199 (1992-09-01), Kohomoto et al.
patent: 5148201 (1992-09-01), Umetsu et al.
patent: 5198847 (1993-03-01), Takahashi
United Kingdom Search Report, Short, Oct. 5, 1992.

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