Microscope for use in modular FTIR spectrometer system
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United States of America Patent
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-
Aug 1, 1989
Grant Date -
N/A
app pub date -
Sep 16, 1986
filing date -
Sep 16, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A microscopic unit for a multi-station modular FTIR spectrometer system is disclosed. The microscope unit, which has a Cassegrain objective, not only provides the usual optical path for radiation during visual observation, and for infrared radiation in the transmission mode, but also provides a separate optical path for infrared radiation in the reflectance mode and in a macroscopic transmission mode. An optical switching wheel is in the path of entering radiation, which may enter through any of three ports; and the wheel is movable into a plurality of alternative positions, including a position in which radiation entering through one port passes through the wheel toward the objective, a position in which radiation entering through the same port is reflected by a wheel-carried mirror along the separate optical path, a position in which a wheel-carried mirror causes radiation to bypass the microscope, and positions in which other wheel-carried mirrors reflect into the microscope radiation entering through other ports.
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