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:
Dec. 04, 1990
Filed:
Sep. 20, 1989
Applicant:
Inventors:
Ulrich Sander, Oberkochen, DE;
Kurt Schulz, Oberkochen, DE;
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350520 ; 350256 ; 350409 ;
Abstract
The invention contemplates a stereoscopic binocular surgical microscope wherein a principal objective of defined focal length is rigidly attached to the microscope and serves both observation-ray paths; an additional lens system is swingably positionable in and out of the ray paths for quick change of focal length, without changing the principal objective, and the additional lens system has provision for selective small radial adjustment of the axis of the additional lens system with respect to the axis of the principal objective, when in operative position.