| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pyroelectric infrared detection device that can perform fine adjustment of the light reception quantity of incident energy of infrared radiation from human bodies or the like. <P>SOLUTION: A pyroelectric infrared detection device uses a plate 4 having at least one open hole. Arrangement of a plate having at least one open hole between a detection area and a pyroelectric infrared detector 2 allows adjustment of the light reception quantity of infrared radiation energy from human bodies or the like. <P>COPYRIGHT: (C)2013,JPO&INPIT |
