| 摘要 |
PURPOSE:To assure the transmission of electric signals with a miniature mechanism, by transmitting the electric signal that is transmitted between a fixed base and a rotary base by means of an optical signal converted from said electric signal between a light emitting part and a photodetecting part. CONSTITUTION:For a light emitter 28, the electric signal delivered from a control part 30 of changeover switches is converted into an optical signal through an electricity-light converting part 31. At the part 31, the electric signal delivered in parallel from the part 30 is converted in a series form by a parallel- series converter 33 and then converted into an optical signal by an electricity- light converter 34 comprising an LED and an optical system to be led to each fiber 32. The optical signal led to the emitter 28 is made incident to its corresponding photodetector 29 and then sent to a light-electricity converting part 36 via an optical fiber 35. |
