Anti-vibration optical device
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United States of America Patent
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May 14, 1996
Grant Date -
N/A
app pub date -
Mar 25, 1994
filing date -
Mar 30, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An optical device having an objective lens system including at least two lens groups (at least one of which is shiftable in the optical axis direction), a vibration detector for detecting a vibration of the objective lens system, and outputting a signal indicating the vibration of the objective lens system, a vibration compensation unit arranged at a position other than the position of the most-object side lens group of the objective lens system, and at least one shift amount detector for detecting the shift amount, in the optical axis direction, of the shiftable lens of the objective lens system, and outputting a signal indicating the shift amount. The drive amount of the vibration compensation unit is calculated based on the signal from the shift amount detector and the signal from the vibration detector.
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