Patent ID: 6563634
Filing Date: 2003-05-13
Classification: G02B

Abstract:
A microscope comprising:an aberration correcting objective lens facing a specimen and having a movable aberration correcting lens correcting an aberration due to an error in a thickness of a cover glass covering said specimen or a specimen-holding member with transmittivity holding said specimen; a moving amount detector detecting a moving amount by which said aberration correcting lens moves along an optical axis of the aberration correcting lens; a focusing unit changing a distance between said specimen and said aberration correcting objective lens; a driver unit driving said focusing unit; and an arithmetic unit obtaining a defocus amount of said aberration correcting objective lens based on a moving amount detected by said moving amount detector, wherein said specimen is put out of focus of said aberration correcting objective lens when said aberration correcting lens is moved, and on the basis of a defocus amount obtained by said arithmetic unit, said driver unit drives said focusing unit so that said aberration correcting objective lens focuses on said specimen.