COMPARISON MICROSCOPE Russian patent published in 1997 - IPC

FIELD: comparative analysis of objects, in particular, for examination of securities. SUBSTANCE: comparison microscope has two comparison branches 1 and 6, observation and detection branch 9, and image field registration unit 21 located between them, consisting of first reflecting surface 22 and a beam splitter made, for instance, in the form of separating prism 23; reflecting surface 22 and prism 23 are installed for movement along the plane of the main section of the separating prism that is formed by two prisms with common beam-splitting face 26 and installed for movement along beam-splitting face 26 at least to two fixed positions. Beam- splitting face 26 is separated at least into three sections: with a semitransparent mirror, with a mirror-reflecting surface, and with a surface transparent for light. EFFECT: enhanced reliability. 5 cl, 14 dwg