Laser ranging over-height vehicle detector system (LARA-OHVD)
US11487010B2 · kind B2 · utility
1Cited by
21References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2019 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Jun 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.