Zoom lens

Details Zoom lens Zoom lens

1995-11-29

2000-08-15

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359785, G02B 1514

Patent

active

061045489

ABSTRACT:
A zoom lens has, in succession from the object side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, and a third lens unit having positive refractive power. The second and third lens units are moved to thereby effect zooming. When variations in the magnifications of the second and third lens units from the wide angle end to the telephoto end are Z.sub.2 and Z.sub.3, respectively, the zoom lens satisfies the condition that Z.sub.3 /Z.sub.2 >1.4. The zoom lens is compact and yet covers a wide angle range of an angle of view of 60.degree.-80.degree..

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