Lidar scanning device and lidar scanning device system
A lidar scanning device for use in a motor vehicle includes a light source for emitting light onto an object; a light detector for receiving light that was reflected by the object; and multiple optical imaging elements in the optical path between the object and the light detector.
1. A lidar scanning device for a motor vehicle, comprising:
a light source to emit light onto an object;
a light detector to receive light that is reflected by the object;
multiple optical imaging elements in an optical path between the object and the light detector; and
an optical band-pass filter in the optical paths of the imaging elements, wherein bandwidths and/or center wavelengths of the band-pass filters differ from one another;
wherein an envelope curve of the band-pass filter is selected as a function of a spread angle of an associated monitoring region, so that a bandwidth, which corresponds to a full width (FW) of the envelope curve at half height or half maximum (HM) (FWHM), is controlled in an adapted manner to protect against interfering light, and
wherein the optical imaging elements includes taper optics.
2. The lidar scanning device of claim 1 , wherein an optical imaging element includes taper optics, a refractive element or a diffractive element.
3. The lidar scanning device of claim 1 , wherein the optical imaging elements have different monitoring regions.
4. The lidar scanning device of claim 3 , wherein the monitoring regions differ from one another in a spread angle or a range.
5. The lidar scanning device of claim 3 , wherein the monitoring regions differ from one another in an orientation of their boundaries.
6. The lidar scanning device of claim 1 , wherein the imaging elements project onto different regions of the light detector.
7. The lidar scanning device of claim 1 , wherein regions of the light detector, onto which the imaging elements project, overlap one another, and wherein there is a controllable diaphragm to block one of the monitoring regions.
8. The lidar scanning device of claim 1 , wherein there is one optical band-pass filter in the optical paths of the imaging elements and bandwidths and/or center wavelengths of the band-pass filters differ from one another.
9. A lidar scanning device system for a motor vehicle, comprising:
a light source to emit light onto an object;
a light detector to receive light that is reflected by the object; and
multiple optical imaging elements, one of which is positionable in an optical path between the object and the light detector; and
an optical band-pass filter in the optical paths of the imaging elements, wherein bandwidths and/or center wavelengths of the band-pass filters differ from one another;
wherein an envelope curve of the band-pass filter is selected as a function of a spread angle of an associated monitoring region, so that a bandwidth, which corresponds to a full width (FW) of the envelope curve at half height or half maximum (HM) (FWHM), is controlled in an adapted manner to protect against interfering light, and
wherein the optical imaging elements includes taper optics.
10. The lidar scanning device system of claim 9 , wherein simultaneously multiple optical imaging elements are positionable in the optical path.
11. The lidar scanning device system of claim 9 , wherein regions of the light detector, onto which the imaging elements project, overlap one another, further comprising:
a controllable diaphragm to block one of the monitoring regions.