Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1989-03-02
1991-02-05
Cuchlinksi, Jr., William A.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356356, 374 55, G01B 1102, G01N 2516
Patent
active
049899805
ABSTRACT:
A method and apparatus for optically measuring coefficient of thermal expansion includes an optical dilatometer system. The system provides a housing having a chamber defined therein and a transparent end adapted for receiving a focused laser beam into the chamber. The housing is adapted for maintaining a vacuum in the chamber. The optical dilatometer system further provides an interferometer comprising first and second interference surfaces, the interferometer being positioned within the chamber. The system further provides a test sample positioned between the first and second interference surfaces. The method includes the step of transmitting a focused laser beam through the transparent end and to the interferometer, thereby generating an interference pattern defined by Newton rings. The Newton ring interference pattern is utilized to determine the coefficient of thermal expansion of the test sample.
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Cuchlinksi, Jr. William A.
Gutierrez Diego F. F.
Honeywell Inc.
Pajak Robert A.
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