Patent ID: 7915575

Claim:
A laser scanning microscope comprising: an infrared light source which emits a first infrared light; a condenser lens which is adapted to illuminate a sample with the first infrared light; an infrared pulse laser which emits a second infrared light; an objective lens which is adapted to irradiate the sample with the second infrared light; an infrared light detector which is adapted to detect the first infrared light that passes through the sample and via the objective lens; a visible light detector which is adapted to detect via the condenser lens, a visible light that is from the sample, that is caused due to the irradiation of the second infrared light, and that has a wavelength shorter than a wavelength of the second infrared light; and an IR partial transmission filter disposed near a front focal position of the condenser lens, wherein the IR partial transmission filter includes: (i) a first area through which the first infrared light and the visible light are passable, and (ii) a second area through which the visible light is passable but the first infrared light is not passable.