Optics: measuring and testing – Crystal or gem examination – Axes determination
Patent
1992-01-10
1993-08-24
Evans, F. L.
Optics: measuring and testing
Crystal or gem examination
Axes determination
2502013, G01N 2100
Patent
active
052393550
ABSTRACT:
An optical microscope equipped with an optical device allowing a convergent beam to irradiate the surface of a specimen through a microscope tube and an objective lens. The device detects the deviation of the convergent beam reflected from the surface of the specimen to an optical axis of the microscope. A driving mechanism moves the specimen in a three-dimensional direction to automatically eliminate the deviation. With this microscope, it is possible to position the specimen automatically, thus reducing the time for examination and improving precision of the examination.
Evans F. L.
NEC Corporation
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