Illuminating arrangement for a microscope (200) having a first LED (10) for providing light with a first intensity spectrum (K1) with at least two intensity maxima and an intensity minimum located between the intensity maxima, and at least one further LED (20) for providing light with a further intensity spectrum (K2) respectively, each further intensity spectrum (K2) having an intensity maximum in the region of the intensity minimum of the first intensity spectrum (K1), and a device (30) for merging the light of the first LED (10) and the light of the at least one further LED (20), by means of which illuminating light can be produced with a combined intensity spectrum (K3) composed of light with the first intensity spectrum and light with each of the further intensity spectra.