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:
May. 18, 2004
Filed:
Apr. 18, 2002
Helmut Ruehl, Giessen, DE;
Wolfgang Rentzsch, Wetzlar, DE;
Leica Microsystems Wetzlar GmbH, Wetzlar, DE;
Abstract
A microscope with a viewing tube for visual observation of a specimen by an observer, with a control circuit for controlling electrical and/or electro-motor-driven microscope functions, and an illuminating device for illuminating the specimen to be observed is described. The control circuit is connected to a proximity sensor installed on the microscope, which responds to the presence of the observer to the viewing tube. The control circuit includes an adjustable time-delay logic element located in the control circuit for delaying switches of the microscope functions such that the microscope functions are switched after the observer is absent for a predetermined time period.