Compact zoom lens system

Details Compact zoom lens system Compact zoom lens system

1996-12-11

1998-03-17

Nelms, David C.

Optical: systems and elements

Lens

With variable magnification

G02B 1514

Patent

active

057293929

ABSTRACT:
A compact zoom lens system is disclosed which comprises a first lens group having an overall positive refractive power and a second lens group having an overall negative refractive power. The magnification of the compact zoom lens system can be varied by varying the distance between the first lens group and the second lens group in accordance with the following condition:

REFERENCES:
patent: 5164859 (1992-11-01), Ito
patent: 5229887 (1993-07-01), Hayashi et al.
patent: 5353162 (1994-10-01), Ito et al.
patent: 5381270 (1995-01-01), Cho

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