| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a simple and economic method for sufficiently separating bundles of input/output rays of a photodetector with a compact structure. <P>SOLUTION: The photodetector has an electronic board (10) on the upper surface of which at least the transmission mechanism (12) of a first light signal and at least the reception transmission (14) of a second light signal by reflection of the first light signal are arranged; and covers (20) in which transmission lens (22) and reception lens (24) made of a translucent material are incorporated, and which are arranged in front of the transmission mechanism (12) and the reception mechanism (14), respectively. The board (10) and the covers (20) are fixed on a fixed support (30) made of an opaque material, and the support (30) has a protruding center strip (31) engaged with a division groove (21) of the cover (20) between the transmission lens (22) and the reception lens (24). <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
