F-.theta. lens system

Details F-.theta. lens system F-.theta. lens system

1982-09-02

1984-03-13

Corbin, John K.

350 68, G02B 934, G02B 2717

Patent

active

044363834

ABSTRACT:
An F-.theta. lens system comprising a first lens group consisting of a first positive meniscus lens component and a second negative lens component, and a second lens group consisting of a third positive lens component and a fourth positive lens component, said lens system comprising a small number of lens elements, a small F number and a large field angle.

REFERENCES:
patent: 3973833 (1976-08-01), Lawson
patent: 4269478 (1981-05-01), Maeda et al.
patent: 4401362 (1983-08-01), Maeda

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