Laser rangefinder
How does it work ?
Laser rangefinders (LRF) all work using the same basic concept. The rangefinder emits laser beams at the push of a button. Those beams bounce off distant objects and the rangefinder’s high-speed clock measures the total time it took from when the beams left the unit until they returned. Since we know how fast the beam was traveling (speed of light) the unit can simply use that time measurement to calculate the distance it traveled, and then it displays the distance to the user.
Source: precisionrifleblog.com
What is it composed of ?
It is composed of a laser diode and a photo diode. There is a lens, a microcontroller, switch, LCD and resistor. And a 5V power supply.
Where is it used ?
- Military, because of his long range it is used by soldier (mostly sniper) to target the tank for exemple.
- 3D modeling in order to offer high-precision scanning abilities.
- In forestry to easily have the exact distance of everything.
- In sport that needs precise distance such as golf/archery/hunting
Exemple:
Simmons 801600 Volt 600
Presentation video
Features
10-600 Yard/meters performance
Powerful 4X magnification
In view liquid crystal display
One button operation
Vocabulary:
Rangefinders: Télémètre
Laser Beam: Rayon Laser
Bonce off: Rebondir
High-speed clock: Horloge à haute vitesse
Speed of light: Vitesse de la lumière
Power supply: Alimentation
Sniper: Tireur d’élite
Scanning abilities: Balayage visual
Forestry: Exploitation forestrière
Archery: Tir à l’arc
Hunting: Chasse
Magnification: Zoom