Apparatus, method for laser distance measurement, and non-transitory computer-readable storage medium
US10627493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Sep 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for laser distance measurement includes: a light-projecting circuit for projecting laser light emitted from a laser diode; a filter for transmitting a specific wavelength and suppressing a wavelength other than the specific wavelength; a photodetector including a plurality of photodetector elements, and configured to receive the laser light projected from the light-projecting circuit and reflected from a measurement object through the filter; and a controller for controlling a relative incidence angle of the reflected laser light with respect to the filter, wherein the controller causes a photodetector signal, which is to be used for calculating a distance to the measurement object, to be outputted from a photodetector element of the photodetector at a position to which a shift of a light-condensing position of the reflected laser light occurs as a result of the control of the relative incidence angle from the light-condensing position before the control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.