Patent
1986-09-16
1989-08-01
Arnold, Bruce Y.
350511, 350620, G02B 510, G02B 1314, G02B 2118
Patent
active
048529559
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.
REFERENCES:
patent: 3134297 (1964-05-01), Carlson et al.
patent: 3464757 (1969-09-01), Schmidt et al.
patent: 4594509 (1986-06-01), Simon et al.
patent: 4712912 (1987-12-01), Messerschmitt
BioRad Digilab publication, date unknown.
ESN-European Spectroscopy News, 64(1986), p. 12. XS
"Low-Cost FTIR Microscopy Units Gain Wider Use in Microanalysis", C&EN, Dec. 9, 1985, p. 15.
Analect Instruments Publication, Jan., 1986.
Doyle Walter M.
Hughes Norman S.
Arnold Bruce Y.
Edmondson David J.
Laser Precision Corporation
Plante Thomas J.
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