| US 7,591,586 B2 | ||
| Method of temperature measurement and temperature-measuring device using the same | ||
| Akira Ohnishi, Kanagawa (Japan) | ||
| Assigned to Japan Aerospace Exploration Agency, Tokyo (Japan) | ||
| Filed on Aug. 09, 2007, as Appl. No. 11/836,693. | ||
| Claims priority of application No. 2006-219895 (JP), filed on Aug. 11, 2006. | ||
| Prior Publication US 2008/0037610 A1, Feb. 14, 2008 | ||
| Int. Cl. G01J 5/00 (2006.01) | ||
| U.S. Cl. 374—129 [374/121; 374/130; 374/126; 374/2] | 6 Claims |
| 1. A method of measuring temperature, the method comprising:
bringing a reference object having an emissivity which is substantially 1 and does not depend on temperature in a prescribed
wavelength range into contact with an object so as to be substantially in the thermal equilibrium with the object;
transmitting the radiant energy radiated from the reference object substantially in the thermal equilibrium with the object
and in the prescribed wavelength range through a bandpass filter; and
observing the radiant energy transmitted through the bandpass filter with a radiation thermometer and determining temperature
of the reference object.
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