ACTUATED OPTICAL ELEMENT FOR LIGHT BEAM SCANNING DEVICE
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Abstract
A light beam scanning device includes a lens element assembly which dynamically adjusts a divergence of the beam. The lens element assembly can include multiple lens elements, one or more of which translates parallel to the light beam to adjust beam divergence. Divergence adjustment can include adjusting the beam divergence along one or more cross sectional axes of the beam. Beam divergence can be adjusted between consecutive scans, during a scan, etc. Beam divergence can be adjusted based on the field of view and scan rate. Beam divergence adjustment can enable dynamic adjustment of the spot size of the beam, which can enable the apparatus to adjust between scanning a wide divergence beam to detect objects in a scene and scanning a narrow divergence beam to generate detailed point clouds of the detected objects. Beam divergence adjustment can enable adjustment of reflection point intensity, enabling detection of low-reflectivity objects.
10 Citations
40 Claims
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1-20. -20. (canceled)
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21. An apparatus, comprising:
a light beam scanning device configured to scan a light beam, over one or more fields of view at one or more scan rates and generate an image map of at least a portion of a scene within the one or more fields of view, based at least in part upon a time of flight of the light beam to and from one or more points within the scene, wherein the light beam scanning device comprises; a controller device configured to control at least one portion of the light beam scanning device to dynamically adjust a beam spot size of the light beam as the light beam is scanned over at least a portion of at least one field of view during a scan over the at least one field of view within a scan range of the light beam scanning device. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A method, comprising:
performing, by at least one computer system; dynamically adjusting a beam spot size of a light beam scanned, by a light beam scanning device, over a scene that is within a field of view of a scan range of the light beam scanning device, such that a map of at least a portion of the scene is generated, based at least in part upon a time of flight of the light beam to and from one or more points within the scene, wherein dynamically adjusting the beam spot size of the light beam comprises; adjusting the beam spot size of the light beam during a scan over at least one field of view within the scan range. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A non-transitory computer-readable storage medium storing a program of computer executable instructions that, when executed by a computer, cause the computer to perform:
dynamically adjusting a beam spot size of a light beam scanned, by a light beam scanning device, over a scene that is within a field of view of a scan range of the light beam scanning device, such that a map of at least a portion of the scene is generated, based at least in part upon a time of flight of the light beam to and from one or more points within the scene, wherein dynamically adjusting the beam spot size of the light beam comprises; adjusting the beam spot size of the light beam during a scan over at least one field of view within the scan range. - View Dependent Claims (37, 38, 39, 40)
Specification