| 摘要 |
A nondirectional infrared detector element using a pyroelectric member, sensitive to the movement of an object in any directions, is provided for an infrared sensor unit and an infrared detector. The infrared detector element comprises a pyroelectric member (11), on one side of which are provided first infrared-absorbing electrodes (12 and 13) that are substantially trapezoidal and are connected electrically to have opposite polarities, while on the other side are provided a pair of electrically- connected second electrodes (14 and 15). The first trapezoidal electrodes (12 and 13) and the second trapezoidal electrodes (14 and 15) are arranged so that their base sides can be in the same direction. This infrared detector element is sensitive to the movement of an object in any direction. |
