| 摘要 |
An optical scanning microscope is provided in which the observation magnification does not greatly change even when the working distance of an objective lens is changed. The optical scanning microscope includes an objective optical system that converts the light from a specimen into a substantially collimated light beam, an imaging optical system that forms an image from the substantially collimated light beam from the objective optical system at a predetermined position, a pupil projection optical system that substantially collimates the light formed into an image by the imaging optical system at the predetermined position, a lateral scanner that angularly deflects the substantially collimated light beam from the pupil projection optical system to laterally scan the area of the specimen to be observed, and a lens driver that drives the imaging optical system or the pupil projection optical system or both in the optical axis direction. Defining the front side be the side where the specimen is located, the imaging optical system is disposed so that the front focal point thereof is positioned in the vicinity of the back focal point of the objective optical system.
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