Zoom lens with an image stabilizing function

Details Zoom lens with an image stabilizing function Zoom lens with an image stabilizing function

1996-06-03

1998-03-24

Nguyen, Thong

Optical: systems and elements

Image stabilization

By movable refractive structure

359554, 359687, 359690, G02B 2764, G02B 1514

Patent

active

057318972

ABSTRACT:
A high performance zoom lens is provided with an image stabilizing function that can maintain a sufficiently long focal length and back focus. The zoom lens with an image stabilizing function includes, in order from an object side to an image side, a first lens group having positive refractive power, a second lens group having negative refractive power, and a terminal lens group having positive refractive power arranged closest to the image side. When zooming from a maximum wide angle state to a maximum telephoto state, the distance between the first lens group and the second lens group increases, and a distance between the second lens group and the terminal lens group changes. The terminal lens group includes, in order from the object side to the image side, at least a first terminal lens group having positive refractive power and a second terminal lens group having negative refractive power, and a displacement mechanism for preventing vibration of the image by rotating the second terminal lens group around a predetermined point on the optical axis of the zoom lens.

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