1. Accuracy, the measurement accuracy of ultrasonic range finder is centimeter level, and the measurement accuracy of laser range finder is millimeter level;
2. In the measurement range, the measurement range of the ultrasonic range finder is usually within 80 meters, while the measurement range of the handheld laser range finder is up to 200 meters, and the measurement range of the laser ranging telescope can reach several hundred kilometers. Even further (the measurement accuracy of laser ranging telescopes is usually 1 meter or tens of centimeters).
3. The ultrasonic range finder is easy to report errors. Because the ultrasonic range finder is a sound wave emission, it has the fan-shaped emission characteristics of sound waves. Therefore, when there are many obstacles passing through the sound wave, the sound waves reflected back are more, the interference is more, and the error is easy to report. The laser range finder is a very small laser that is emitted and returned, so as long as the beam can pass, there is almost no interference.
4, the price of ultrasonic range finder from tens of dollars to several hundred dollars, the price of laser range finder from a few hundred dollars to thousands, tens of thousands of dollars, depending on the accuracy and distance, there is a big difference.