Lens control apparatus

Details Lens control apparatus Lens control apparatus

1997-07-25

1999-09-21

Perkey, W. B.

Photography

Camera shake sensing

396 81, 396136, 359698, 348347, 348356, G03B 1336, G02B 1514

Patent

active

059565284

ABSTRACT:
A lens control apparatus which corrects a variation in a focus position due to a zooming operation by driving a compensator lens at a standard speed according to a predetermined cam locus is arranged to determine a correction direction on the basis of an integral value of a high-frequency component and a correction speed on the basis of the ratio of the high-frequency component to a luminance difference, and to combine the correction speed based on the state of focus with the standard speed.

REFERENCES:
patent: 4735494 (1988-04-01), Makino et al.
patent: 5157432 (1992-10-01), Fukuoka et al.
patent: 5164756 (1992-11-01), Hirasawa
patent: 5200860 (1993-04-01), Hirasawa et al.
patent: 5249010 (1993-09-01), Kaneda
patent: 5323200 (1994-06-01), Hirasawa

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