When real time microscope is a confocal used, the a dispersion optics, comprising: a broadband light source for supplying light; a illumination optical system for the illumination light emitted from the light source to a gap-shaped aperture by collecting the; the gap-shaped aperture, to allow for the passage only of the light beam emitted by the illumination optical system to pass the region of the gap be illuminated; a [...], to propagate to provide emitted to generate reflected to shine propagate through the gap-shaped aperture to provide emitted light beams to generate parallel light beams passing from the; a first dispersion optics, around the same that the parallel light rays in different from the [...], their wavelengths corresponding angles; an objective lens, the light beams emitted from the first to a sample dispersion optics ; a first imaging lens, from the gap-shaped aperture 805 passing light beams from the specimen and through the parallel light rays; a second dispersion optics, around the same that the parallel light rays in different from the first imaging lens, their wavelengths corresponding angles; a second imaging lens for the light beams emitted from the second illustration figurationdispersion optics ; and a two dimensional photoelectric detector for converting the from the second...