Fast wide angle zoom lens

Details Fast wide angle zoom lens Fast wide angle zoom lens

1996-10-07

1998-08-11

Epps, Georgia Y.

Optical: systems and elements

Lens

With variable magnification

359716, 359740, G02B 1514, G02B 302, G02B 900

Patent

active

057935343

ABSTRACT:
A fast wide angle zoom lens system for a compact camera is disclosed which comprises, from an object side, a first lens group of a negative refractive power; a second lens group of a positive refractive power; and a third lens group of a negative refractive power. When zooming is carried out from a wide angle position to a telephoto position in this system, the first, second and third lens groups are all shifted toward the object so that a distance between the first and second lens group and a distance between the second and third lens group are varied with the zoom lens system satisfying the following conditions:

REFERENCES:
patent: 5539582 (1996-07-01), Kohno et al.

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