Photography – Camera shake sensing – Having stabilization system
Patent
1998-08-25
2000-08-01
Perkey, W. B.
Photography
Camera shake sensing
Having stabilization system
359554, G03B 1700, G02B 2764
Patent
active
060978961
ABSTRACT:
A motion compensation device to compensate for motion of an optical system causing image blur. The motion compensation device includes a motion detection unit to detect motion causing image blur, a motion compensation lens which is driven to correct image blur and a motion detection signal correction unit to correct a motion detection signal output by the motion detection unit. The motion detection signal correction unit includes a position bias table to correct a target position signal which drives the motion compensation lens to a target position, and a speed bias table to correct the drive speed of the motion compensation lens. The position bias table causes the motion compensation lens to be driven at the center of its range of movement to prevent a sense of physical disorder during panning or during a composition change. Moreover, the speed bias table causes the motion compensation lens to be driven to a center of its range of movement a predetermined time after introduction of a power supply to correct the drive speed of the motion compensation lens to obtain an image with little distortion.
REFERENCES:
patent: 5745799 (1998-04-01), Morofuji
patent: 5809346 (1998-09-01), Fujisaki
patent: 5845156 (1998-12-01), Onuki
Nikon Corporation
Perkey W. B.
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