| 摘要 |
<p>PURPOSE:To facilitate manufacture of a multi-element infrared detector by employing a hexagonal pyroelectric and providing a degree of freedom in the arrangement of elements, e.g. electrodes, by utilizing the area of the piezoelectric widely. CONSTITUTION:An opening 3 made in the center of the surface of a case 2 is closed by a window 4 made of an infrared ray transmitting material. A stem 5 closing the lower opening of the case 2 is held by means of four lead pins 6 penetrating the stem 5 and the conductive part of a pyroelectric element supporting base 18 is formed on the surface of a circuit board 8 held at the upper end part of time pins 6. A pyroelectric element 15 having ceramic substrate comprises a hexagonal pyroelectric 16 and a pair of electrodes (elements) 17a, 17b formed at predetermined regions on the surface and rear thereof and the electrode 17b is mounted on the board 8 while being bonded to the supporting base 18. Since the pyroelectric 16 receiving infrared rays and serving as a pyroelectric current source is formed hexagonally, the available area is increased to provide a degree of freedom in the arrangement of electrodes 17a, 17b thus facilitating manufacture of a multi-element detector.</p> |
