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. 19, 1992
Filed:
Jul. 11, 1990
Felix Ams, Kampfelbach, DE;
Roland Schafer, Bretten-Durrenbuchig, DE;
Richard Wolf GmbH, Knittlingen, DE;
Abstract
A means for checking the iluminating means of an endoscope allows both the lamp of the endoscope and the light-guide cable to be checked for their operating conditions. For this purpose, the checking means has a beam splitter positioned in the beam path from the lamp which conveys part of the quantity of light emitted by the lamp to a detecting means. A detecting means provided with a device to receive the distal end of the light-guide cable picks up the quantity of light coming from the cable. From the signal derived therefrom and the signal generated by the detecting means, the transmission factor is found in a calculating circuit by quotient formation and is shown on a display. In this way it is possible to determine whether the transmission factor of the light-guide cable will allow the objects which are going to be viewed to be adequately illuminated or whether the cable needs to be replaced.