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:
Jan. 05, 2010
Filed:
Sep. 28, 2005
Johannes Winterot, Jena, DE;
Dirk Jahn, Jena, DE;
Renhu Shi, Goettingen, DE;
Ingo Fahlbusch, Goettingen, DE;
Johannes Winterot, Jena, DE;
Dirk Jahn, Jena, DE;
Renhu Shi, Goettingen, DE;
Ingo Fahlbusch, Goettingen, DE;
Carl Zeiss Microimaging GmbH, Jena, DE;
Abstract
The invention is directed to an objective, particularly for telescope-type stereomicroscopes. The objective comprises two lens groups, a first lens group and a second lens group. The first lens group, which faces the object plane, has a positive refractive power and comprises a plurality of lenses of which at least two form a cemented component. The second lens group, which is on the image side, has a negative refractive power and comprises a collecting cemented component and a diverging lens. The objective is characterized in that the following conditions Band Bare met: where Drepresents the diameter of the exit pupil of the objective and ωrepresents the maximum field angle.