The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2011
Filed:
Apr. 26, 2007
Renhu Shi, Goettingen, DE;
Werner Kleinschmidt, Adelebsen, DE;
Thomas Bocher, Goettingen, DE;
Carl Zeiss MicroImaging GmbH, Jena, DE;
Abstract
The invention relates to a microscope objective with preferably anti-symmetric lenses or lens groups with an optical magnification of −100 and a visual field factor of 20. According to the invention the microscope objective consists of 9 lenses with 3 cemented elements, starting from the object side (left), a lens which is almost a hemisphere Lwith positive refractive power, a meniscus lens Lwith positive refractive power, a two-part cemented element Gwith positive refractive power, another two-art cemented element Gwith positive refractive power, a two-part cemented element Gwith negative refractive power, and finally a meniscus lens Lwith negative refractive power. By using cemented elements and lens pairings of the same construction, production costs can be reduced compared with methods of the prior art while image contrast is improved.