| 摘要 |
<p>PURPOSE: To provide a transmission type photo-interrupter which is smaller and thinner and can be surface-mounted. CONSTITUTION: A transmission type photo-interrupter 2 is provided with an insulation substrate 1 on the surface of which a conductive pattern 3 is formed, a light emitting element 5 which is mounted on the surface of the insulation substrate 1, and a photo-detecting element 9 which is mounted on the surface of the insulation substrate 1 for detecting the light from the light emitting element. On the insulation substrate between the light emitting element 5 and the photo-detecting element 9, a notch 29 into which a detector body is inserted is formed. The light emitting and photo-detecting elements are directly fixed and connected on the insulation substrate 1, for thinner shape. Further, since the transmission type photo-interrupter has no lead and not limited to a minimum lead pitch, miniaturization is possible. Furthermore, a conductor layer is formed on the surface of a recessed part 31 of the insulation substrate 1, thus surface mounting becomes possible.</p> |
