| 摘要 |
PURPOSE:To lower cooling temperature and to improve sensitivity by cooling an infrared detecting element by using a cooling body equipped with a thermoelectric element formed by combining p-type and n-type Bi-Te alloy materials with each other and a thermoelectric element formed by combining p-type and n-type Bi-Sb alloy materials with each other. CONSTITUTION:The thermoelectric element 1 formed by combining the p-type and n-type Bi-Te materials and the thermoelectric element 2 formed by combining the p-type and n-type Bi-Sb alloy materials together are used to constitute the cooling body 3 which enables cooling down to -196 deg.C. Then this cooling body 3 is used to cool the infrared ray detecting element 4. This cooling body 3 of this constitution is used to lower the cooling temperature sufficiently as compared with a conventional detector which uses Peltier effect, and the sensitivity of the infrared-ray detector is improved. |
