1978-08-01
1980-06-10
Clark, Conrad J.
350214, G02B 962, G02B 961
Patent
active
042069742
ABSTRACT:
A high resolution objective lens system for ultra microfiche designed for a magnification of 1/150x.about.1/120x and comprising a first cemented lens component consisting of a positive lens element and a negative lens element, a second positive lens component, a third positive lens component, a fourth negative cemented lens component, a fifth positive lens component and a sixth cemented lens component consisting of a negative meniscus lens element and a positive meniscus lens element.
REFERENCES:
patent: 3759606 (1973-09-01), Van Orden
patent: 3773403 (1973-11-01), Lechner et al.
patent: 3817602 (1974-06-01), Kazamaki et al.
patent: 4080048 (1978-03-01), Kimura
Clark Conrad J.
Olympus Optical Co,. Ltd.
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