Patent ID: 8786945

Claim:
A laser scan confocal microscope comprising: a light separator that is configured to separate illumination light of a light source and observation light, the observation light being emitted from a specimen; a light scanner that is configured to scan the illumination light on the specimen; an objective lens that is configured to be disposed between the light scanner and the specimen to form a focal point on the specimen; a collective lens that is configured to collect the observation light to a position conjugate to the focal point of the objective lens; a pinhole plate which is provided in a focal plane of the collective lens; a detector that is configured to detect observation light having passed through a pinhole of the pinhole plate; a plane-parallel plate which is disposed between an illumination lens and the light source, the illumination lens being provided between the light source and the light separator; and a controller that controls rotation of the plane-parallel plate in accordance with a driving amount of the plane-parallel plate, the driving amount being calculated based on chromatic aberration of magnification of the objective lens relating to a deflection amount of the light scanner.