Vibration-isolating optical system

Details Vibration-isolating optical system Vibration-isolating optical system

1990-03-02

1990-12-18

Sugarman, Scott J.

350252, G02B 1514, G02B 702

Patent

active

049782053

ABSTRACT:
A vibration-isolating optical system having an image stabilizing function, comprising: a fixed lens optical system having a plurality of lens groups which are arranged to be stationary in the vertical direction with respect to the optical axis; and a vibration-isolating compensating optical system disposed adjacently to the image of the fixed lens optical system and arranged to be movable in a direction intersecting the optical axis, wherein the vibration-isolating compensating optical system is constituted by, in sequence order from the portion adjacent to the object, a first factor formed by a double convex positive lens, a second factor formed by a negative lens whose concave confronts the object and a third factor formed by a positive lens, the vibration-isolating compensating optical system being arranged so as to meet the following relationships, assuming that the power (the reciprocal of the focal length) of the overall body of the vibration-isolating compensating optical system is .phi., the power of the first factor is .phi., the power of the first factor is .phi..sub.1, the power of the second factor is .phi..sub.2 and the combination power of the first factor and the second factor is .phi. .sub.12 : .vertline..phi..sub.12 .vertline..ltoreq.0.3 .phi.; -0.5.ltoreq.(.phi./.phi..sub.2)+1.ltoreq.1.0; and -0.3.ltoreq.(.phi..sub.2 /.phi..sub.1)+1.ltoreq.0.3.

REFERENCES:
patent: 4100404 (1978-07-01), Johnson et al.
patent: 4802746 (1989-02-01), Baba et al.

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