Image forming lens and microscope apparatus using the same

Details Image forming lens and microscope apparatus using the same Image forming lens and microscope apparatus using the same

2011-01-04

2011-01-04

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

Microscope objective

Reexamination Certificate

active

07864438

ABSTRACT:
An image forming lens has a configuration that an image forming lens IL for receiving parallel beams of light emitted from an observation target object and emerging from an infinity-designed objective lens of a microscope and forming an image of the observation target object in a predetermined position, is constructed of, in order from an object side, a first lens group G1having positive refractive power and a second lens group G2having negative refractive power, and the first lens group is constructed of a positive lens (e.g., a biconvex lens L1) and a negative lens (e.g., a negative meniscus lens L2). Glass materials of the positive lens and the negative lens configuring the first lens group G1satisfy conditions of predetermined νdht and partial dispersion ratio Pht, then a transmittance, with respect to the light having a wavelength of 340 nm, of each of the glass materials of all the lenses is equal to or larger than 50% per glass thickness of 10 mm, and the transmittance with respect to the light having the wavelength of 360 nm is equal to or larger than 80% per glass thickness of 10 mm.

REFERENCES:
patent: 5394271 (1995-02-01), Tanaka et al.
patent: 05-113540 (1993-05-01), None
patent: 2521959 (1996-05-01), None
patent: 9-243924 (1997-09-01), None
patent: 10-221597 (1998-08-01), None
patent: 11-160624 (1999-06-01), None
patent: 11-316337 (1999-11-01), None
patent: 2000-105340 (2000-04-01), None
patent: 2002-169098 (2002-06-01), None
patent: 2002-341249 (2002-11-01), None
patent: 2003-195175 (2003-07-01), None
patent: 2004-62118 (2004-02-01), None
patent: 2004-212920 (2004-07-01), None
patent: 2006-133248 (2006-05-01), None

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