Patent ID: 7036978
Filing Date: 2006-05-02
Classification: A61B,G01J

Abstract:
1. A radiation thermometer, comprising: an infrared-ray sensor for measuring a quantity of infrared rays irradiated from an object being measured, sensor-temperature measuring unit to measure a temperature of the infrared-ray sensor, a probe receiving therein the infrared-ray sensor and the sensor-temperature measuring unit and said probe is inserted into an opening, and temperature calculating unit to calculate a temperature of the object being measured, on the basis of a quantity of infrared rays irradiated from the object being measured, and a temperature of the infrared-ray sensor; said temperature calculating unit comprising representative temperature presuming unit to presume a temperature of the infrared-ray sensor or information of a temperature representative of any one of members constituting the probe in conformity to thermal time constants peculiar to the respective members from heat conducted to the infrared-ray sensor and the members by a heat source in the vicinity of an outer wall of the probe; and a temperature difference information presuming unit to calculate at least either of a phase lead component or a phase lag component of results of measurement of the sensor-temperature measuring unit in conformity to thermal time constants of the members present on a heat conduction path passing through the sensor-temperature measuring unit to presume a temperature difference information between the sensor-temperature measuring unit and the infrared-ray sensor and the members.