1978-01-24
1979-09-04
Clark, Conrad J.
350222, G02B 2102
Patent
active
041666747
ABSTRACT:
An objective lens system for microscopes having a large N.A. and a long working distance comprising a first positive lens component, a second single or cemented meniscus lens component, a third negative cemented meniscus lens component and a fourth positive lens component. Said objective lens system is so designed as to satisfy the conditions enumerated hereunder:
REFERENCES:
patent: 2644943 (1953-07-01), Klein
patent: 3537773 (1970-11-01), Klein
patent: 3744881 (1973-07-01), Taira
Clark Conrad J.
Olympus Optical Co,. Ltd.
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