The police officer chooses the vehicle he wants to measure in the laser guns viewfinder. Then he presses the trigger and the laser sends impulses in the invisible-infrared part of the spectrum against this vehicle. The beam is emitted in very short intervals - pulses. If we aim the laser beam at a shiny object, it will be reflected back from it - Instantaneously. The reflected beam is captured by optics and a light-sensitive element - a photodiode - converts it into an electrical signal.
Based on the length of the pulse return time, the lidar calculates the distance to the object. The ratio of the distance traveled to the elapsed time is calculated from the average of several measurements, and the radar calculates the speed based on these values. The measuring point is most often the headlight, mask, or registration plate, which tends to be very shiny. By pressing the trigger, the device is activated and the vehicle's speed is measured within about one to two seconds. The speed data will immediately appear on the display.
The laser is able to measure the vehicle up to a distance of 1 km, but by default, it is measured at a distance of 50-400 meters. A light-colored vehicle is easier to measure with lasers than a dark-colored vehicle. The technical parameters of laser pistols used in Europe vary in each country.
A portable radar detector can detect laser guns, however, it usually does not provide enough time for safe deceleration, more about how radar detectors can be found here. The only 100% protection against laser speed measurement is a laser jammer.
Onick LS320 Handheld Laser Speedometer
LS320 is the first laser speedometer with superior performance launched by Onick! It is welcomed by speed measurement enthusiasts for its light appearance, simple operation and rapidity. Clear LCD display, novel design, compact style, light to use, high sensitivity, clear and convenient reading! Enjoy endless speed measurement fun! Onick LS320 handheld laser speedometer is widely used in traffic law enforcement, field training, sports competition, military and police technology and other application fields.
Product features:
LCD display, clear and convenient reading
Class 1 eye-safe laser
Maximum measurement range 1200 meters, speed range 320 kilometers per hour
Speed measurement accuracy 2 kilometers per hour, distance measurement accuracy 0.3 meters
With voice prompts, speed and sound synchronization
Novel design, compact style, light to use, high sensitivity, long-term working
Application areas:
Traffic speed measurement, road factory area, highway, field training, sports competition, military and police technology, etc.