Abstract: The invention relates to an illuminating device for microscopes, wherein the light source has, in particular, a white light illumination having total daylight spectrum and/or an excitation light source for fluorescent colors. The inventive illuminating device for a microscope consists of surface or spatially arranged light sources, which are connected to a control unit for generating any desired illuminating patterns and illuminating spectrums, and an illuminating optic to image these illuminating patterns on the object to be examined. The light sources consist of LEDs (11) which excite at least one luminescence color (14) which is adapted to the wavelength which is emitted by the LEDs (11). The LEDs (11) are arranged concentrically to the optical axis of the illuminating device, preferably, in or in the vicinity of the aperture diaphragm plane.

Abstract: An illuminating module (100) has a light source which has at least one white-light LED. In addition to the white-light LED, an LED for red light and an LED for green light are provided. The illuminating module (100) has an output (112) and includes a light-mixing unit (101) which mixes the light of the white-light LED with the light of the respective LEDs for red light and green light in order to make available white illuminating light at the output (112) of the illuminating module for illuminating light.