Abstract: A method and a system for determining a condition of an optical fiber cable of an electrosurgical instrument with regard to its transfer characteristic for light are described. The system can comprise an evaluation unit having a light source and a light analysis unit that can be optically coupled with the optical fiber cable. The emission light emitted from the light source is coupled in the optical fiber cable, reflected at its distal end and transmitted back to the light analysis unit and is received as receipt light. The receipt light is correlated with the emission light and therefrom a transfer characteristic can be determined. If this is carried out prior to the first use of the electrosurgical instrument and subsequently at least once, changes in the transfer characteristic can be determined and the condition of the optical fiber cable can be concluded.

Abstract: An apparatus for capturing superimposed distance and intensity images includes a distance image measuring arrangement provided with a distance radiation source, an intensity radiation source, a distance detection unit and an intensity detection unit. Distance measurement radiation from the distance radiation source and intensity measurement radiation from the intensity radiation source are incident on an area of a surface of a test object via a jointly used radiation deflection unit. The optical components of the distance image measuring arrangement and the intensity image measuring arrangement are mounted on a support structure in a fixed spatial relationship with respect to each other. Distance and intensity images are thus superimposed in an optically positionally accurate manner to produce high-quality real-time images.

Abstract: An apparatus for capturing superimposed distance and intensity images includes a distance image measuring arrangement provided with a distance radiation source, an intensity radiation source, a distance detection unit and an intensity detection unit. Distance measurement radiation from the distance radiation source and intensity measurement radiation from the intensity radiation source are incident on an area of a surface of a test object via a jointly used radiation deflection unit. The optical components of the distance image measuring arrangement and the intensity image measuring arrangement are mounted on a support structure in a fixed spatial relationship with respect to each other. Distance and intensity images are thus superimposed in an optically positionally accurate manner to produce high-quality real-time images.