What is the principle of laser distance sensors?

Long-range laser rangefinder in the work of the target to shoot a very thin beam of laser light, by the photoelectric element to receive the target reflected laser beam, the timer to determine the laser beam from the launch to receive the time to calculate the distance from the observer to the target; LED white light tachymeter imaging in the instrument internal integrated circuit chip CCD, the CCD chip performance is stable, long working life, and basically not affected by the working environment and temperature. The CCD chip has stable performance and long working life, and is basically not affected by the working environment and temperature. Therefore, LED white light tachymeter measurement accuracy is guaranteed, stable and reliable performance.