Variable path length probe

A probe is provided having a probe head (2) in which is formed an opening (10) for receiving a sample to be analysed. The head (2) comprises a pair of optical interfaces (16; 18), each disposed at a respective opposing inner surface (20; 22) of the opening (10) to delimit a path (26) for optical rad...

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Bibliographic Details
Main Author BORN, CHRISTIAN
Format Patent
LanguageEnglish
Published 20.02.2014
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A probe is provided having a probe head (2) in which is formed an opening (10) for receiving a sample to be analysed. The head (2) comprises a pair of optical interfaces (16; 18), each disposed at a respective opposing inner surface (20; 22) of the opening (10) to delimit a path (26) for optical radiation through the opening (10). At least one of the pair of optical interfaces (18) comprises an element (32) transparent to the optical radiation in the wavelength region(s) of interest and is disposed to permit the optical radiation to travel between internal (28) the probe head and the opening (10). The probe further comprises a movable diaphragm (24) in which a one (18) of the pair of optical interfaces (16; 18) is located for movement therewith and an actuator (46) is located within the probe head (2) and in operable connection to the diaphragm (24) to control its movement so as to vary the path length of the path (26) for optical radiation.
Bibliography:Application Number: AU20090356468