Zooming optical system

Details Zooming optical system Zooming optical system

1994-10-04

1997-10-14

Epps, Georgia Y.

Optical: systems and elements

Image stabilization

By movable refractive structure

359683, G02B 2764, G02B 1514

Patent

active

056777922

ABSTRACT:
A zooming optical system provided with a variable angle prism member of which the vertical angle is variable, and designed such that the vertical angle of the prism member is varied by a drive force applied from outside to thereby deflect a beam of light, wherein provision is made of a first lens unit having positive refractive power and a plurality of lens units including a movable lens unit rearwardly of the first lens unit, the first lens unit is divided into a front lens unit of negative refractive power and a rear lens unit of positive refractive power, and the prism member is disposed between the front lens unit and the rear lens unit.

REFERENCES:
patent: 2959088 (1960-11-01), Rantsch
patent: 5040881 (1991-08-01), Tsuji
patent: 5182671 (1993-01-01), Kitagishi et al.
patent: 5315435 (1994-05-01), Horiuchi

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