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:
Nov. 19, 2002
Filed:
Nov. 09, 2000
Jacques Alain Déverin, Widnau, CH;
Leica Microsystems AG, Heerbrugg, CH;
Abstract
The invention relates to an illumination device for a surgical microscope comprising a main objective lens ( ) surrounding a main optical axis ( ) and an illumination optical system ( ) having a light source ( ). Two prisms ( ) are provided between the main objective lens ( ) and the illumination optical system ( ). During operation, the first prism ( ) causes part of the light flow from the illumination optical system ( ) to be deflected at a small angle to the main optical axis ( ) and the second prism ( ) causes another part of the light flow from the illumination optical system ( ) to be deflected along the main optical axis ( ). Both prisms ( ) are arranged next to each other. The light entry surfaces ( ) of both prisms face the illumination optical system ( ) in such a way that light flux can be independently adjusted for the two prisms ( ). This results in a compact design and a good light flux distribution.