The descriptions of ray paths in the microscope given in most books are insufficient to provide what is required for a proper appreciation of the roles of the various parts in a modern microscope. This chapter attempts to deal with ray paths in enough detail to illustrate the concepts of geometrical optics and the interrelation of lenses and diaphragms. The essential optical system described here exists in every microscope, but some are equipped with extra parts, optical and mechanical, for the measurement of optical and geometrical properties in various kinds of stage objects.
KeywordsLuminous Surface Virtual Image Primary Image Tube Lens Aperture Angle
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