FOCUS STABILIZING MECHANISM OF MICROSCOPE OR THE LIKE

摘要

An optical microscope of high stability such that the problem that the image of the sample becomes blurred during observation and the problem that movement (drift) of the object point (object) occurs are solved because the defocusing in the Z direction attributable to thermal expansion of the optical microscope is compensated. The optical instruments are characterized by comprising an optical system unit symmetrical to the optical axis in terms of the weight and the shape and a peripheral unit having a sample positioning mechanism is constituted by combining components having temperature dependences close to zero.