Optical: systems and elements – Lens – Microscope objective
Patent
1996-09-10
1998-01-13
Epps, Georgia Y.
Optical: systems and elements
Lens
Microscope objective
359660, 359661, 359787, G02B 2102, G02B 914
Patent
active
057085315
ABSTRACT:
This invention relates to a microscope objective lens system a part of which is immersed in a liquid to observe a sample present in the liquid. Particularly, this invention provides an apochromat-grade microscope objective lens system which can be machined cheaply and easily by the conventional technology, which is well corrected for chromatic aberration, and which is excellent in flatness of the image plane. This objective lens system has a plane-parallel plate on the most sample side, is constructed without using an embedded lens as used in the conventional objectives, and can take a variety of lens layouts.
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patent: 3883231 (1975-05-01), Koizumi
patent: 4403835 (1983-09-01), Ushida
patent: 4953962 (1990-09-01), Esswein et al.
patent: 5305147 (1994-04-01), Hasegawa et al.
patent: 5469299 (1995-11-01), Nagano
patent: 5502596 (1996-03-01), Suzuki
patent: 5530590 (1996-06-01), Saito
Ito Itoe
Suenaga Yutaka
Yamada Hiroshi
Epps Georgia Y.
Lester Evelyn A.
Nikon Corporation
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