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:
Apr. 08, 1997
Filed:
Aug. 10, 1994
Applicant:
Inventors:
Assignee:
Carl-Zeiss-Stiftung, Heidenheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359389 ; 359368 ; 359370 ; 359385 ;
Abstract
Phase-contrasting elements are arranged in the viewing beam paths of a stereomicroscope to make transparent media visible with rich contrast such as in the area of ophthalmologic surgery. The phase-contrasting elements make the transparent media visible as phase objects in the amplitude contrast. The phase-contrasting elements are selected in dependence upon the light source diaphragm which is used.
Hellmuth, Thomas. (1997). Stereomicroscope for making transparent media visible and method therefor (U.S. Patent No. 5619372). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5619372
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile