Apochromatically corrected microscope objective

Details Apochromatically corrected microscope objective Apochromatically corrected microscope objective

2007-09-11

2007-09-11

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Microscope objective

Reexamination Certificate

active

11448592

ABSTRACT:
A microscope objective with high aperture, large object field and apochromatic correction in the wavelength range from ultraviolet to infrared. The microscope objective includes, starting from the object level: a first group of lenses with overall positive refraction power, including a cemented group with positive-negative refraction power effect, made out of one of two lenses, and of a further lens with positive refraction power, a second group of lenses with positive refraction power, including three cemented lenses, a third group of lenses with negative refraction power, including three cemented lenses, in which the side that faces the image plane is convex, a fourth group of lenses, consisting of a lens with positive refraction power and a cemented group of two lenses with positive-negative refraction power, and a fifth group of lenses, including two lenses in a cemented group with negative-positive refraction power.

REFERENCES:
patent: 5517360 (1996-05-01), Suzuki
patent: 5659425 (1997-08-01), Suzuki
patent: 6181480 (2001-01-01), Ito

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