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. 10, 2001
Filed:
Apr. 21, 2000
Lorenz Twisselmann, Prisdorf, DE;
Moller-Wedel GmbH, Wedel, DE;
Abstract
An optical system for a stereoscopic surgical microscope for interchanging two light rays parallel to the optical centre axis with simultaneous image reversion for both rays without parallel offset of the emerging pair of rays with respect to the entering pair of rays, comprising elements reflecting on one side and two elements reflecting in parallel on both sides, all of which are arranged in a plane perpendicular to the optical axis. Each of the elements reflecting on both sides reflects the incident ray with its front side via the elements reflecting on one side to the rear side of the respectively other elements reflecting on both sides. All the optical elements are configured as flat, superficially mirror-coated mirrors, so that their substrate lies completely outside the path of rays. The mirrors mirror-coated on both sides are shaped such that, in the plan view along the optical axis, their edge in the vicinity of the optically neighbouring mirrors mirror-coated on one side extends tangentially virtually parallel to the reflecting surface of the latter, so that they can be brought up to one another until they touch. The reflection surfaces of the two mirrors mirror-coated on both sides form with the plane of the optical arrangement an angle of greater than 45°, in order to avoid a disturbing parallel offset of the emerging pair of rays with respect to the entering pair of rays.