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. 11, 2006
Filed:
Jun. 18, 2002
Albrecht Weiss, Linden, DE;
Albrecht Weiss, Linden, DE;
Leica Microsystems Wetzlar GmbH, Wetzlar, DE;
Abstract
A method and an apparatus for regulating the brightness of a light source (), configured as an incandescent lamp, in the illumination beam path () of a microscope (), the brightness of the light source () being modifiable by increasing or reducing the electrical power delivered to the light source (), are characterized in that a red shift, associated with the reduction in the delivered electrical power, of the spectrum of the light emitted by the light source () in the illumination beam path () is compensated for by way of a variable optical filter () that brings about a blue shift of the spectrum. A color-neutral regulation of the brightness of the illuminating light is thereby achieved.
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