microscope with device for regulating the brightness of a light source and automatic lampenwechsler

摘要

Method for changing the light bulb of an electrical light source for an optical observation unit, whereby the light intensity given off by the light source is continuously monitored using a light sensor (3a). If the measured intensity exceeds or falls below given intensity thresholds, a signal to the user indicates the imminent failure of the light bulb. ??An Independent claim is made for a optical observation device, especially a microscope (7), with a bulb type light source (1) and one or more light sensors (3a, 3b) linked to an electronic unit (4) and a user display (5) linked to a user (9).