| 摘要 |
PROBLEM TO BE SOLVED: To provide a range-finder reduced in time parallax while maintaining focusing precision. SOLUTION: Luminous flux is projected toward a range-finding object from an IRED 4 and the reflected light of the projected luminous flux is received by a PSD 5. Then, a signal outputted from the PSD 5 is arithmetically processed and outputted as distance information by signal processing circuits 11 and 12 and an arithmetic circuit 14. By an integrating circuit 15, the signal outputted from the arithmetic circuit 14 is integrated and a signal corresponding to the integrated result is outputted. By a CPU 1, a distance to the range-finding object is detected based on the signal outputted from the integrating circuit 25. In this range-finding device, the signal outputted from the arithmetic circuit 14 is started to be integrated by the integrating circuit 15 immediately after the output of a distance signal by the arithmetic circuit 14 is stabilized. |
