Compact zoom lens system

Details Compact zoom lens system Compact zoom lens system

1991-06-12

1994-02-01

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

359708, 359715, G02B 1514

Patent

active

052836932

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
patent: 4195912 (1980-04-01), Doi
patent: 4304466 (1981-12-01), Betensky
patent: 4509833 (1985-04-01), Ikemori
patent: 4647160 (1987-03-01), Ikemori
patent: 4652091 (1987-03-01), Oizumi et al.
patent: 4659186 (1987-04-01), Sato et al.
patent: 4682860 (1987-07-01), Tanaka et al.
patent: 4726665 (1988-02-01), Itoh
patent: 4726666 (1988-02-01), Ota
patent: 4772106 (1988-09-01), Ogata et al.
patent: 4787718 (1988-11-01), Cho
patent: 4810072 (1978-03-01), Takahashi
patent: 4815830 (1989-03-01), Sato et al.
patent: 4830476 (1989-05-01), Aoki
patent: 4838669 (1989-06-01), Ogata et al.
patent: 4844599 (1989-04-01), Ito
patent: 4906077 (1990-03-01), Ito
patent: 4911539 (1990-03-01), Tsunashima et al.
patent: 4936661 (1990-06-01), Betensky et al.
patent: 4953957 (1990-09-01), Kobayashi
patent: 4999007 (1991-03-01), Aoki
patent: 5005955 (1991-04-01), Ohshita
patent: 5054897 (1991-10-01), Ozawa
"Study on the Optical Design of a Zoom Lens," by Keizo Yamaji, Cannon Research Report No. 3, 1965.

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