| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem such that with a conventional laser range finding device, since the output of a light receiving element is amplified and compared, a range finding value varies due to the amount of laser beam signal, characteristics such as sensitivity characteristics of the light receiving element, amplification characteristics of an amplifier, and threshold characteristics of a comparator, and variations in the characteristics.SOLUTION: Correlation between reference light showing a transmission timing and signal right showing a reception timing is detected. From the detection results of correlation, the center of gravity is obtained and a range finding value is calculated. Thus, a laser range finding device can be provided that reduces a range finding error to improve range finding accuracy.</p> |
