Zoom lens system

Optical: systems and elements – Lens – With variable magnification

Patent

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Details

359557, 359714, G02B 1514, G02B 1318, G02B 2764

Patent

active

051684039

ABSTRACT:
A zoom lens system comprises from the object side, a front lens group having a refractive power of a predetermined sign and a rear lens group having a refractive power of different sign from that of the front lens group. The front lens group is shiftable along the optical axis of the lens system in a zooming operation, and movable perpendicularly to the optical axis for decreasing a blur caused by a hand shake. The rear lens group is shiftable along the optical axis in the zooming operation.

REFERENCES:
patent: 4974951 (1990-12-01), Sander et al.
patent: 5000549 (1991-03-01), Yamazaki

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