Patent ID: 9448117
Filing Date: 2016-09-20
CPC Classification: G01J

Claim Text:
1. An infrared thermometer that measures a temperature using an infrared sensor, comprising: a determination unit configured to determine whether or not a sensor body including the infrared sensor therein has contact with an object to be measured; a measurement unit configured to measure an amount of infrared radiation using the infrared sensor at a time when the determination unit determines that the sensor body has contact with the object to be measured; and a calculation unit configured to calculate a temperature based on the amount of infrared radiation measured by the measurement unit, wherein the measurement unit comprises: a proximity sensor configured to measure capacitance when the sensor body approaches the object to be measured; a circuitry configured to output an oscillation frequency upon reception of the capacitance measured by the proximity sensor; a micro controller configured to calculate a proximity distance between the sensor body and the object to be measured, based on count of the oscillation frequency; a monitor configured to monitor the temperature calculated by the calculation unit when the proximity distance calculated by the micro controller is a certain distance or less; and a determiner configured to determine that the sensor body has contact with the object to be measured when the temperature monitored by the monitor is around a certain temperature.