| 摘要 |
PURPOSE:To enable light emitting diode elements to output a light beam in such a way that the light beam is branched in a left and right directions by providing the diode elements near the slopes of a prism section. CONSTITUTION:The exit light beam from light emitting diode elements 13 are branched in a left and right directions by providing the elements 13 near the slopes 152 and 153 of a prism section 151. For example, a light emitting diode 1 is constituted of a lead 11 one end of which is die-bonded to an infrared- ray emitting diode 13, another lead 12 which is provided in parallel with the lead 11 at a prescribed interval and one end of which is wire-bonded to another light emitting diode element 13 through a gold wire 14, and resin 15 with which the elements 13 and wire 14 are coated. The resin 15 which becomes an important part is integrally molded in a nearly rectangular shape by using, for example, a light transmitting epoxy resin so that its front end can become a prism- like shape. It is preferable to apply black paint to the surface of the resin 15 as a light shielding film except the slopes 152 and 153. |
