A device for producing a triangular laser sheet. The device has an optical transmitter with a pair of plano-convex cylindrical lenses for circularizing infrared laser light and a plano-concave cylindrical lens for shaping the circularized light to produce a triangular laser sheet. A tilt sensor measures departure of the triangular laser sheet from a horizontal reference. The device projects a triangular sheet of infrared light that is useful for detecting over-height vehicles that are approaching a structure, such as a bridge.
LASER RANGING OVER-HEIGHT VEHICLE DETECTOR SYSTEM (LARA-OHVD)
2020-03-12
Patent
Electronic Resource
English
Laser ranging over-height vehicle detector system (LARA-OHVD)
European Patent Office | 2022
|Engineering Index Backfile | 1965
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