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. 28, 2017
Filed:
Apr. 14, 2010
Peter Reimer, Ellwangen, DE;
Thomas Kratzer, Konigsbronn, DE;
Stefan Ernsperger, Ellwangen, DE;
Bruno Stich, Aalen, DE;
Peter Reimer, Ellwangen, DE;
Thomas Kratzer, Konigsbronn, DE;
Stefan Ernsperger, Ellwangen, DE;
Bruno Stich, Aalen, DE;
CARL ZEISS MEDITEC AG, Jena, DE;
Abstract
An optical observation unit () has an illumination apparatus () for illuminating an observation object (). The illumination apparatus () has a light source () emitting illumination light with a first color temperature, and a spectral filter () that can be inserted in the illumination beam path. The spectral filter () converts the illumination light with the first color temperature into illumination light with a second color temperature. The illumination apparatus further has an attenuator () that can be inserted in the illumination beam path in place of the spectral filter () and has a transmission characteristic that leads to an intensity reduction of the illumination light with the first color temperature that corresponds to the intensity reduction of the illumination light with the second color temperature by way of the spectral filter ().