Patent ID: 6204964
Filing Date: 2001-03-20
Classification: G02B

Abstract:
A laser microscope comprising:a laser illumination light source;an image-forming optical system which is substantially telecentric at at least an image side, leads illumination light emanated from said laser illumination light source to an object, and forms an image of reflected light from said object on an image plane; anda photoelectric conversion device having an image-taking plane which receives reflected light forming the image on the image plane, and converts the light into an electric signal; wherein,the image-taking plane of the photoelectric conversion device is tilted relative to the image plane in order that no interference of rays incident on the image-taking plane takes place, and wherein the following condition is fulfilled:sin.sup.-1 (NA)<.theta.<(1/2).multidot.sin.sup.-1 (.lambda./P)-sin.sup.-1 (NA)where,.theta.: a tilt angle of the image-taking plane of the photoelectric conversion device relative to the image plane,NA: a numerical aperture of the image side of the image-forming optical system,.lambda.: a wavelength of the illumination light to be used, andP: a period of a periodical structure of the photoelectric conversion device.