| 摘要 |
<p>PURPOSE:To protect a photodetecting device against malfunction caused by a noise current which flows between opposed lead frames resin. CONSTITUTION:A photodetecting IC 6 is mounted on a secondary lead frame 7 facing in the same direction with a light emitting diode 2 mounted on a primary lead frame 5 which confronts the lead frame 7, and a noise current generated between the lead frames 7 and 5 is made to flow through the secondary lead frame 7 of low potential, whereby the photodetecting IC 6 can be prevented from malfunctioning. Light emitted from the light emitting diode 2 is reflected by an overcoat 4 to impinge on the photodetecting IC 6.</p> |
