To provide an infrared temperature sensor that is corrected in detected temperature while ensuring high responsiveness. An infrared temperature sensor 10 according to the present invention includes a heat conversion film 40, an infrared detection element 43 held by the heat conversion film 40, a tem
To provide an infrared temperature sensor that is corrected in detected temperature while ensuring high responsiveness. An infrared temperature sensor 10 according to the present invention includes a heat conversion film 40, an infrared detection element 43 held by the heat conversion film 40, a temperature compensation element 45 that is provided adjacently to the infrared detection element 43 and is held by the heat conversion film 40, a light guide part 59 that guides entered infrared rays toward the infrared detection element 43, and a blocking part 27 that blocks the infrared rays from being incident on the temperature compensation element 45, in which an inner surface of the light guide part 59 configures an irradiation surface 57 to be irradiated with the infrared rays, and the irradiation surface 57 includes a correction region 58 that is different in emissivity of the infrared rays from surroundings.
대표청구항▼
1. An infrared temperature sensor that detects temperature of a detection object in a non-contact manner according to infrared rays radiated from the detection object, the infrared temperature sensor configured to be used so as to be disposed facing the detection object, the infrared temperature sen
1. An infrared temperature sensor that detects temperature of a detection object in a non-contact manner according to infrared rays radiated from the detection object, the infrared temperature sensor configured to be used so as to be disposed facing the detection object, the infrared temperature sensor comprising: a heat conversion film configured to be irradiated with the infrared rays radiated from the detection object and to convert the incident infrared rays into heat;a blocking part disposed facing the heat conversion film, and configured to block the infrared rays radiated from the detection object, from being incident on a part of the heat conversion film;an infrared detection element that is held in a region of the heat conversion film irradiated with the infrared rays radiated from the detection object;a temperature compensation element that is held in a region of the heat conversion film blocked from the infrared rays by the blocking part; anda light guide part including an irradiation surface and configured to guide the infrared rays radiated from the detection object to the region where the infrared detection element is provided, whereinthe irradiation surface includes a correction region that is different in emissivity of the infrared rays from another region, wherein the correction region is higher or lower in the emissivity of the infrared rays than the other region and the correction region is larger or smaller in surface roughness than the other region. 2. The infrared temperature sensor according to claim 1, wherein the correction region is formed through supply of energy from outside. 3. The infrared temperature sensor according to claim 2, wherein the energy from outside is supplied through application of a laser beam. 4. An infrared temperature sensor that detects temperature of a detection object in a non-contact manner according to infrared rays radiated from the detection object, the infrared temperature sensor configured to be used so as to be disposed facing the detection object, the infrared temperature sensor comprising: a heat conversion film configured to be irradiated with the infrared rays radiated from the detection object and to convert the incident infrared rays into heat;a blocking part disposed facing the heat conversion film, and configured to block the infrared rays radiated from the detection object, from being incident on a part of the heat conversion film;an infrared detection element that is held in a region of the heat conversion film irradiated with the infrared rays radiated from the detection object;a temperature compensation element that is held in a region of the heat conversion film blocked from the infrared rays by the blocking part; anda light guide part including an irradiation surface and configured to guide the infrared rays radiated from the detection object to the region where the infrared detection element is provided, whereinthe irradiation surface includes a correction region that is different in emissivity of the infrared rays from another region, wherein the correction region is higher or lower in the emissivity of the infrared rays than the other region and the correction region includes a coating film or a sheet member that is higher or lower in the emissivity of the infrared rays than the other region. 5. The infrared temperature sensor according to claim 1, wherein the irradiation surface is partitioned into a plurality of irradiation surfaces, andthe correction region is provided on at least one of the partitioned irradiation surfaces. 6. The infrared temperature sensor according to claim 5, wherein the correction region is provided on a whole or a part of one of the partitioned irradiation surfaces. 7. The infrared temperature sensor according to claim 1, wherein the irradiation surface includes a single continuous surface, andthe correction region is provided on a part of the single surface. 8. The infrared temperature sensor according to claim 1, wherein the other region is provided around the correction region. 9. The infrared temperature sensor according to claim 1, wherein the light guide part has a cylindrical shape, andthe irradiation surface is provided on an inner surface of the cylindrical light guide part. 10. The infrared temperature sensor according to claim 1, further comprising a first case and a second case disposed facing the first case, wherein the first case includes the blocking part and the light guide part, andthe first case and the second case sandwich the heat conversion film. 11. The infrared temperature sensor according to claim 10, wherein the second case includes a housing concave part housing the infrared detection element and the temperature compensation element that are held on a surface of the heat conversion film on a side opposite to the detection object. 12. The infrared temperature sensor according to claim 10 wherein the irradiation surface and the correction region are provided directly on the light guide part of the second case, or on an infrared absorbing molded body that is configured to be attached to the light guide part of the second case. 13. A method of manufacturing the infrared temperature sensor according to claim 1, the method comprising: a determination step of determining necessity of correction for an inspection object sensor, based on prescribed temperature Tr and actually-measured temperature Ta that is acquired by actually performing temperature detection with use of the inspection object sensor; anda correction step of forming, on the irradiation surface of the inspection object sensor, the correction region that is different in emissivity of the infrared rays from surroundings, based on a result of the determination in the determination step. 14. The infrared temperature sensor according to claim 11 wherein the irradiation surface and the correction region are provided directly on the light guide part of the second case, or on an infrared absorbing molded body that is configured to be attached to the light guide part of the second case. 15. The method according to claim 13, wherein in the correction step, the correction region is formed through application of a laser beam to a part of the irradiation surface. 16. The method according to claim 13, wherein in the correction step, the correction region is formed by a coating film or a sheet member that is higher or lower in the emissivity of the infrared rays than the other region. 17. An infrared temperature sensor that detects temperature of a detection object in a non-contact manner according to infrared rays radiated from the detection object, the infrared temperature sensor configured to be used so as to be disposed facing the detection object, the infrared temperature sensor comprising: a heat conversion film configured to be irradiated with the infrared rays radiated from the detection object and to convert the incident infrared rays into heat;a blocking part disposed facing the heat conversion film, and configured to block the infrared rays radiated from the detection object, from being incident on a part of the heat conversion film;an infrared detection element that is held in a region of the heat conversion film irradiated with the infrared rays radiated from the detection object;a temperature compensation element that is held in a region of the heat conversion film blocked from the infrared rays by the blocking part; anda light guide part including an irradiation surface and configured to guide the infrared rays radiated from the detection object to the region where the infrared detection element is provided, whereinthe irradiation surface includes a correction region that is different in emissivity of the infrared rays from another region and wherein the correction region is provided on an inner wall of the light guide part.
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