Optical: systems and elements – Lens – Microscope objective
Reexamination Certificate
2006-05-16
2006-05-16
Lester, Evelyn A. (Department: 2873)
Optical: systems and elements
Lens
Microscope objective
C359S656000, C359S784000, C359S754000
Reexamination Certificate
active
07046451
ABSTRACT:
To provide an immersion microscope objective lens capable of making a numerical aperture NA larger than 1.45 even if an ordinary oil is used, the objective lens includes, in order from an object, a first lens group, a second lens group, and a third lens group. The first lens group includes a first cemented lens constructed by a plano-convex lens having a plane surface facing to the object cemented with a meniscus lens having a convex surface facing to an image, and two or more cemented positive lenses disposed to the image side of the first cemented lens. The second lens group includes one or more cemented lens. The third lens group includes, in order from the object, a cemented meniscus lens having a strong concave surface facing to the image, and a cemented meniscus lens having a strong concave surface facing to the object. Given conditional expressions are satisfied.
REFERENCES:
patent: 3297393 (1967-01-01), Ziegler
patent: 3598474 (1971-08-01), Shoemaker
patent: 3661446 (1972-05-01), Mori et al.
patent: 3700311 (1972-10-01), Shoemaker
patent: 3746428 (1973-07-01), Shoemaker
patent: 3902793 (1975-09-01), Shoemaker
patent: 4373785 (1983-02-01), Shoemaker
patent: 5444573 (1995-08-01), Saito
patent: 5502596 (1996-03-01), Suzuki
patent: 5517360 (1996-05-01), Suzuki
patent: 5532878 (1996-07-01), Suenaga et al.
patent: 5798869 (1998-08-01), Watanabe
patent: 5805346 (1998-09-01), Tomimatsu
patent: 5889617 (1999-03-01), Yamada et al.
patent: 5978147 (1999-11-01), Kudo
patent: 5982559 (1999-11-01), Furutake
patent: 6501603 (2002-12-01), Kasahara
patent: 6519092 (2003-02-01), Yamaguchi
patent: 6700710 (2004-03-01), Watanabe
patent: 6747804 (2004-06-01), Fujimoto et al.
patent: 2002/0089760 (2002-07-01), Yamaguchi
patent: 2003/0043473 (2003-03-01), Okuyama
patent: 2003/0053218 (2003-03-01), Fujimoto et al.
patent: 2000-35541 (2000-02-01), None
patent: 2002-98903 (2002-04-01), None
patent: 2002-341249 (2002-11-01), None
patent: 2002-350734 (2002-12-01), None
patent: 2003-015046 (2003-01-01), None
patent: 2004-61589 (2004-02-01), None
Mandai Miwako
Yamaguchi Kotaro
Lester Evelyn A.
Miles & Stockbridge P.C.
Nikon Corporation
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