Zoom lens for an electronic camera

Details Zoom lens for an electronic camera Zoom lens for an electronic camera

Filed on

1990-03-19

Date issued

1991-12-10

Examiner

Arnold, Bruce Y.

Patent Class

Optical: systems and elements

SubClass

Lens

SubSubClass

With variable magnification

Other Related Categories

359663, G02B 1500, G02B 964, G02B 1322

Type

Patent

Status

active

Patent number

050712373

Description

ABSTRACT:
A zoom lens is described for an electronic camera for still pictures, comprising a front group (G.sub.1), a variator group (G.sub.2) and a main group (G.sub.4). The lens is designed in such a manner that the sum of the spherical aberrations of the front group and the variator group is constant throughout the zoom range and is adapted to that of the main group.

REFERENCES:
patent: 3891304 (1975-06-01), Muszumanski
patent: 4518228 (1985-05-01), Sugiura
patent: 4763998 (1988-08-01), Tsuji et al.

Affiliated with

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