Method and device for detecting an object that can retroreflect light
US7858920B2 · kind B2 · utility
2Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2007 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Nov 22, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/89
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to the invention, two simultaneous images with different wavelengths (λ1, λ2) are formed in synchronism with each illuminance laser pulse, one of the Images corresponding to the wavelength (λ1) of the laser pulses, and the difference between the two images is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.