Patent ID: 6862085

Claim:
A device for detecting transmission losses of optical light guide means comprising optical light guide means ( 2 ) having an optical inlet portion ( 4 ) through which light from a separate light source ( 6 ) is transmitted to an optical outlet portion ( 8 ) of the light guide means ( 2 ), at least one light sensor ( 10 ) arranged in a chamber ( 20 ) for measuring the light intensity emerging from the optical outlet portion ( 8 ) of the light guide means ( 2 ) to be checked and diffusely reflected in the chamber ( 20 ), evaluation means ( 14 ) for evaluating the measuring signal from the at least one light sensor ( 10 ), the evaluation means ( 14 ) having a display means ( 18 ) for displaying the measurement result, said optical light guide means ( 2 ) is part of an endoscope ( 3 ), said optical inlet portion ( 4 ) of said light guide means ( 2 ) to be checked is located at the optical inlet portion ( 4 ) of the light guide means ( 2 ) contained in the endoscope ( 3 ), said separate light source ( 6 ) is independent of the light guide means ( 2 ) to be checked contained in said endoscope ( 3 ) couples a predetermined light intensity into the optical inlet portion ( 4 ) of said endoscope ( 3 ), and the optical outlet portion ( 8 ) of said endoscope ( 3 ) is introduced through an opening ( 22 ) of the chamber ( 20 ) into the chamber ( 20 ).