Systems and methods for calibrating an optical distance sensor
US9989406B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2017 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Jan 30, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4815
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A calibration system is provided including an aperture layer, a lens layer, an optical filter, a pixel layer and a regulator. The aperture layer defines a calibration aperture. The lens layer includes a calibration lens substantially axially aligned with the calibration aperture. The optical filter is adjacent the lens layer opposite the aperture layer. The pixel layer is adjacent the optical filter opposite the lens layer and includes a calibration pixel substantially axially aligned with the calibration lens. The calibration pixel detects light power of an illumination source that outputs a band of wavelengths of light as a function of a parameter. The regulator modifies the parameter of the illumination source based on a light power detected by the calibration pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.