| 摘要 |
PURPOSE:To obtain an inexpensive compact range finder which achieves com mon use of a memory capacitor without interposing a switching element to reduce the number of memory capacitors without lowering the S/N ratio. CONSTITUTION:Stationary light current bypassing circuits 22-22E are connected to a plurality of photodetectors 1D-6D respectively. To determine the bypass level of the bypassing circuits 22-22E, one common capacitor 107 is connected to the photodetectors 1D, 3D and 5D one apart and another capacitor 108 is connected in common to the remaining photodetectors 2D, 4D and 6D every other. |
