| 摘要 |
PROBLEM TO BE SOLVED: To provide a focus moving mechanism capable of a high speed movement of a focus which is compact and does not exert effect due to vibrations to a sample or the like by providing an optical element having positive refractive power and an optical element having negative refractive power respectively by at least each one optical element between an objective lens and a light source, changing the distances of the optical elements, and to provide an optical microscope using the focus moving mechanism. SOLUTION: The focus moving mechanism moves the focus position of an optical system which converges incident light from a prescribed light source on the surface of the sample by means of the objective lens. Therein, the optical elements having positive refractive power and the optical elements having negative refractive power are arranged respectively by at least each one element between the objective lens and the light source and a moving means for changing a physical distance between the optical elements is disposed. COPYRIGHT: (C)2005,JPO&NCIPI
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