| 摘要 |
PROBLEM TO BE SOLVED: To provide the inexpensive chopper for a pyroelectric radiation- temperature measuring device, which can perform accurate radiation temperature measurement and can achieve a compact configuration of the entire radiation- temperature measuring device. SOLUTION: A base part 102, to which a piezoelectric element 104 is attached, is held and fixed with fixing members 106a and 106b so as to divide the base part into two parts. Chopping plates 110a and 110b are provided at the tips of arms 108a and 108b vertically extending from both ends of the base part 102. The base part 102 is finely vibrated with the piezoelectric element 104. Then, the vibration is amplified with the arms 108a and 108b, and the chopping plates 110a and 110b are made to cross the front of a sensor window 114 of a pyroelectric sensor 112. |
