laser sensor

A sensor that uses laser technology to measure, consisting of a laser, a laser detector, and a measurement circuit. The laser sensor is a new type of measuring instrument. Its advantage is that it can realize non-contact long-distance measurement, fast speed, high precision, large measuring range, strong resistance to light and electric interference.

When the laser sensor is in operation, the laser emitting diode is first directed to the target to emit a laser pulse. The laser scatters in all directions after being reflected by the target. Part of the scattered light is returned to the sensor receiver, which is received by the optical system and imaged onto the avalanche photodiode. An avalanche photodiode is an optical sensor with an internal amplification function, so it can detect extremely weak optical signals and convert them into corresponding electrical signals.

Non-contact long-distance measurement can be achieved by using the high directivity, high monochromaticity and high brightness of the laser. Laser sensors are commonly used for measuring physical quantities such as length (ZLS-Px), distance (LDM4x), vibration (ZLDS10X), speed (LDM30x), and azimuth. They can also be used for flaw detection and monitoring of atmospheric pollutants.