Gauss lens with image stabilizing function

Details Gauss lens with image stabilizing function Gauss lens with image stabilizing function

1996-01-18

1998-07-14

Nguyen, Thong

Optical: systems and elements

Image stabilization

By movable refractive structure

359554, 359691, G02B 2764, G02B 1514

Patent

active

057813400

ABSTRACT:
A Gauss lens having image stabilizing function with sufficient brightness, back focal length and excellent imaging quality is provided. The present invention includes, in order from object side, at least a first lens group with positive refractive power and a second lens group with positive refractive power. A negative lens component having a divergent surface with a convex surface facing the object side is placed closest to the image side in the first lens group G1 and a negative lens component having a divergent surface with a convex surface facing the image side is placed adjacent to the image side of the aperture stop. A displacement mechanism moves the second lens group in the direction substantially perpendicular to the optical axis to prevent vibration. The focal length f2 of the second lens group and the focal length f of the totality of the lens system satisfy the condition:

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