Photographing apparatus

Details Photographing apparatus Photographing apparatus

1993-08-17

1995-07-25

Hayes, Monroe H.

354400, G03B 118

Patent

active

054366844

ABSTRACT:
A photographing apparatus comprises a first lens group to variably change a magnification, a second lens group to perform a focus adjustment, a movement measuring sensor to measure a moving speed of the first lens group, a movement control circuit to move the second lens group at the moving speed according to a measurement value of the moving speed which is obtained from the movement measuring sensor and a speed change circuit to change the moving speed of the first lens group. The apparatus has a stop circuit for allowing the movement control circuit to stop the movement control of the second lens group according to the measurement value of the moving speed obtained from the movement measuring sensor when the moving speed derived from the movement measuring sensor is changed.

REFERENCES:
patent: 4816859 (1989-03-01), Maruyama et al.
patent: 4935763 (1990-06-01), Itoh et al.
patent: 5075709 (1991-12-01), Ueyama
patent: 5136324 (1992-08-01), Tsubol et al.
patent: 5146260 (1992-09-01), Yamamoto
patent: 5157432 (1992-10-01), Fukuoka et al.

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