Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-08-30
1998-10-06
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
25033911, 2503418, G01N 2135
Patent
active
058180460
ABSTRACT:
A set of mid-infrared transparent elements with new element geometry, design of the optics and radiation path configuration is described. Radiation from the IR microscope objective, after being internally reflected at the element/sample interface is either returned to the objective or is directed through the microscope condenser optics with sample information to the detector system for spectral analysis. Alternatively, the beam may bounce off the element/sample interface either once, twice or multiple times at the same angle of incidence, to allow examination of the micro surface of the sample by internal reflectance as well as transmission of the beam through the same sample area. Further, a method to perform external reflectance measurements at different angles of incidence using the described apparatus is discribed.
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