Compact zoom lens system

Optical: systems and elements – Lens – With variable magnification

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Details

359714, G02B 1514

Patent

active

054465923

ABSTRACT:
A compact zoom lens system comprises a front negative lens component and a rear positive lens component with a variable air space between the front and the rear lens components. The front negative lens component consists of two lens elements and the rear lens component consists of two or three lens elements. A plurality of aspherical surfaces are employed for the compact zoom lens system. Furthermore, some zoom lens system includes an additional negative lens component having a weak refractive power behind the rear lens component.

REFERENCES:
patent: 3958864 (1976-05-01), Glatzel
patent: 4153339 (1979-05-01), Tajima et al.
patent: 4195912 (1980-04-01), Doi et al.
patent: 4304466 (1981-12-01), Betensky
patent: 4509833 (1985-04-01), Ikemori
patent: 4647160 (1987-03-01), Ikemori
patent: 4726665 (1988-02-01), Itoh
patent: 4726666 (1988-02-01), Ota et al.
patent: 4810072 (1989-03-01), Takahashi
patent: 4812023 (1989-03-01), Kikuchi
patent: 4844599 (1989-07-01), Ito
patent: 4953957 (1990-09-01), Kobayashi
patent: 4999007 (1991-03-01), Aoki et al.
patent: 5005955 (1991-04-01), Ohshita
patent: 5054897 (1991-10-01), Ozawa

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