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:
Jun. 25, 2002
Filed:
Jul. 26, 2000
Gert Koest, Hannover, DE;
Marc Repnow, Bremen, DE;
Oculus Optikgeraete GmbH, Wetzlar-Dutenhofen, DE;
Abstract
The invention relates to a slit projector comprising a light source, a slit diaphragm arranged in front of the light source, and a lens system arranged in front of the slit diaphragm. Such a slit projector is used in particular in slit lamps. The front chamber of the eye can be illuminated with such slit projectors in order to be able, for example, to take pictures of the slit image of the front chamber of the eye. High performance light sources are needed for this. These are presently not available at acceptable prices. Therefore, the purpose exists to improve a slit projector in such a manner that same presents a slit of the needed brightness for viewing the eye and in particular for slit image photography. This is attained in such a manner that the light source consists of several light diodes arranged essentially in a longitudinal direction of the slit, namely in the plane of the projected slit.