| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an infrared light introduction device and a light receiving component of an infrared sensor where a light receiving element functions even under direct rays. <P>SOLUTION: All faces of a tube 1 are made black. An opening part 2 and opening parts 3 are installed on both ends of the tube 1. Sizes of openings in the opening parts 3 are made larger than a light receiving part 5 incorporating the light receiving element 4. Supports 6 are arranged in the tube 1, and a length (height) of the tube 1 is properly controlled by the size of an instrument using the infrared sensor. Cylindrical shielding walls 12 are disposed at a periphery of the light receiving element 11. All faces of the cylindrical shielding wall 12 are made black. One or above opening parts 13 are installed on the cylindrical shielding walls 12, and a photosensitive part of the light receiving element 11 is turned to the opening part 13. The lengths (heights) of the cylindrical shielding walls 12 are properly controlled by the size of the instrument using the infrared sensor. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
