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US 10,509,198 B1Granted
Lever system for driving mirrors of a lidar transmitter
AssigneeDiDi Research America, LLC
InventorsQin Zhou, Youmin Wang
Life of this patent
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Abstract
A lever is used to rotate a microelectromechanical systems (MEMS) mirror. The lever can be used to provide more torque from a vertical comb drive. The MEMS mirror can be part of an array of micro mirrors used for beam steering a laser in a Light Detection and Ranging (LiDAR) system for an autonomous vehicle.
Claims10
A device for beam steering in a Light Detection and Ranging (LiDAR) system of an autonomous vehicle, the device comprising:
- a mirror comprising:
- a reflective surface;
- and
- a supporting beam, wherein the supporting beam is configured to rotate the reflective surface by force being applied to the supporting beam;
- a combdrive actuator, wherein:
- the combdrive actuator is configured to apply a torque to the supporting beam;
- and
- the supporting beam is mechanically between the combdrive actuator and the reflective surface;
- a lever mechanically coupling the combdrive actuator with the supporting beam, wherein the lever is configured to apply a force to the supporting beam;
- a hinge coupling the lever with the supporting beam, wherein the hinge is configured to allow for articulated movement between the lever and the supporting beam;
- and
- an actuator with a spring configured to harmonically oscillate the mirror about a first axis, wherein the supporting beam is configured to rotate the reflective surface about a second axis, and wherein the first axis is not parallel to the second axis.
9 more elements
Dependencies are inferred from the claim text.