Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1988-11-02
1990-03-06
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
350 9629, 374162, G01J 0508, G01K 1112
Patent
active
049061062
ABSTRACT:
A pyrometric temperature measuring instrument including at least one optical wave guide (1a) with a core (5) and a cladding (6), a light detector (3) and at least one pyrometric sensor (2a). The at least one optical wave guide (1a) has a large numerical aperture. The pyrometric sensor (2a) is located at one end of the at least one optical wave guide (1a) and covers at least a cross-section of the core (5) of an optical wave guide (1a). In a preferred embodiment, the light detector (3) is an InGaAs photodiode. The optical wave guide (1a) has a numerical aperture of 0.3 or more, a diameter of the core (5) of approximately 100 .mu.m or more, and is surrounded by a light-tight cover (7).
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Kaufmann Meinolph
Schultheis Lothar
BBC Brown Boveri AG
Yasich Daniel M.
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