Compact zoom lens system

Details Compact zoom lens system Compact zoom lens system

1992-11-20

1995-06-13

Dzierzynski, Paul M.

Optical: systems and elements

Lens

With variable magnification

359676, 359716, G02B 1514

Patent

active

054248701

ABSTRACT:
A compact zoom lens system comprises, from the object side, a first lens component of a positive refractive power, a second lens component of a positive refractive power, and a third lens component of a negative refractive power. The first lens component has at least one aspherical surface. There are variable air spaces between the first and second lens components and between the second and third lens components.

REFERENCES:
patent: 4726668 (1988-02-01), Nakayama et al.
patent: 4773744 (1988-09-01), Yamanashi
patent: 4840467 (1989-06-01), Takada et al.
patent: 4952038 (1990-08-01), Ito
patent: 5004329 (1991-04-01), Tsuchida
patent: 5069536 (1991-12-01), Ogata

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