| 摘要 |
<p>PURPOSE: To provide a passive sensor wherein miniaturization can be effectively realized after proper function is maintained. CONSTITUTION: A passive sensor is provided with an optical unit housed in a cover 2 and for collecting light incident through the cover 2 at a specified position and a support mechanism for rotatably supporting the optical unit on a chassis 19. The optical unit is movably supported only in a specified stroke by the support mechanism so as to adjust the position in the direction of the height from the chassis 19. The position of the height from the chassis 19 is changed in constant relation for its rotation and movement angle. The support mechanism movably supports the optical unit by using a bearing hole 23a formed in the direction of the height from the chassis 19. And when the optical unit is rotated and moved, a guide shaft 15 at the side of the optical unit is moved along a guide groove 16 and the position of the height from the chassis 19 of the optical unit is changed.</p> |
