Provided is a microscope that allows irradiation with uniform illumination light without decreasing the amount of light. Employed is a microscope 1 including an incoherent light source 31 that emits incoherent light I; an optical fiber 35 on which the incoherent light I is incident and which guides the incident incoherent light I by repeated total reflection; a DMD 37 having an array of movable micromirrors each reflecting or transmitting the guided incoherent light I; an objective lens 18 that irradiates a specimen 19 with the incoherent light I reflected or transmitted by the DMD 37 and that collects fluorescence F coming from the specimen 19; a dichroic mirror 17 that splits off the collected fluorescence F coming from the specimen 19 from the incoherent light I; and a CCD camera 13 that is disposed at a position conjugate to the position of the DMD 37 and that detects the fluorescence F coming from the specimen 19 and split off by the dichroic mirror 17.