Microscope beamsplitter
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United States of America Patent
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Aug 4, 1998
Issued Date -
N/A
app pub date -
Jan 28, 1997
filing date -
Jun 16, 1995
priority date (Note) -
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Abstract
A zonal beamsplitter for use with surgical microscopes including a pair of right triangular prisms positioned adjacent to each other in opposing relation along substantially planar surfaces defining their respective hypotenuses. The planar surface of one prism is bi-zonal and includes a first zone for diverting substantially all of a portion of an image-quality optical signal at an angle from the direction of travel of the optical signal, and a second zone for conducting substantially all of the remaining image-quality optical signal therethrough. The plane of the first zone may be offset from that of the second zone and/or coated with an opaque reflective surface such as a metal foil.
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