| 摘要 |
PROBLEM TO BE SOLVED: To provide an infrared sensor which is capable of reducing errors in temperature measurement due to the detection of secondary radiation from a case as much as possible and is hardly affected by disturbance, and to provide an electronic apparatus using the same. SOLUTION: A thermopile element 4 is housed in a recession part 11 formed in a part mounting surface of a stem 2. A chip-type thermistor 5 is mounted in the vicinity of the recession part 11 on the part mounting surface. An inner cap 12 thermally connected to the stem 2 is provided in such a way as to cover the thermopile element 4 and the thermistor 5. Therefore, it is possible to improve tendency to follow the temperature of a cold junction of the thermopile element to changes in the temperature of the stem. In addition, by the inner cap which follows changes in the temperature of the stem by thermal coupling with the stem, it is possible to prevent the thermopile element from being irradiated with secondary radiation from the case and the inner cap. COPYRIGHT: (C)2004,JPO
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