Zoom lens system

Details Zoom lens system Zoom lens system

1989-09-15

1991-09-10

Arnold, Bruce Y.

Optical: systems and elements

Lens

With graded refractive index

359683, 359708, G02B 1514, G02B 1304, G02B 1318

Patent

active

050468332

ABSTRACT:
A high performance, compact, light-weight zoom lens system manufacturable at a low cost consisting of a plural number of lens units and so adapted as to perform zooming by varying airspace(s) reserved between the lens units, said zoom lens system comprising, in the order from the object side, a first lens unit having negative refractive power, an aperture stop arranged on the image side of said first lens unit, and at least one radial GRIN lens component arranged on the image side of said aperture stop, having a concave shape and having positive power.

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