Optical system, in particular lidar system, and vehicle

Patent metadata

Field	Value
Publication number	US-2022011439-A1
Application number	US-201917294294-A
Country	US
Kind code	A1
Filing date	Dec 30, 2019
Priority date	Jan 23, 2019
Publication date	Jan 13, 2022
Grant date	—

Abstract

An optical system includes an optical transmitter which emits a scanning light beam into the surroundings along a first beam path, and an optical detector which receives a reflected light beam from the surroundings along a second beam path. In at least one of the first beam path and the second beam path, two mirror surfaces tilted relative to one another by 90° deflect the light beam from a first plane into a second, parallel plane. The mirror surfaces are rotatably supported and coupled to one another so that when the mirror surfaces are rotated together about a rotational axis perpendicular to the planes, scanning of the surroundings takes place so that no tilting of the light beam occurs during the rotation. Beamforming of the scanning light beam takes place, at least partially, via a curvature of the two mirror surfaces and/or via a beamformer in the first beam path.

First claim

1 - 10 . (canceled)

11 . An optical system, comprising:
at least one optical transmitter; at least one optical detector, the optical transmitter being configured to emit a scanning light beam into surroundings along a first beam path, and the optical detector being configured to receive a reflected light beam from the surroundings along a second beam path; and two mirror surfaces situated in at least one of the first beam path and the second beam path, the two mirror surfaces being tilted relative to one another by 90° and deflect the light beam from a first plane into a second plane parallel to the first plane, wherein the mirror surfaces are rotatably supported and coupled to one another in such a way that when the mirror surfaces are rotated together about a rotational axis perpendicular to the first and second planes, scanning of the surroundings takes place in such a way that no tilting of the light beam occurs during the rotation, beamforming of the scanning light beam taking place, at least partially, via a curvature of the two mirror surfaces and/or at least partially via a beamformer in the first beam path.

12 . The optical system as recited in claim 11 , wherein the optical system is a LIDAR system.

13 . The optical system as recited in claim 11 , wherein the optical transmitter and/or the optical detector is on a stator and does not rotate together with the mirror surfaces.

14 . The optical system as recited in claim 11 , wherein the first beam path and the second beam path are superimposed, so that both the first and second beam paths use the same mirror surfaces.

15 . The optical system as recited in claim 11 , wherein in the first beam path and in the second beam path, in each case, a dedicated pair of mirror surfaces that are tilted relative to one another by 90° deflects the light beam from a first plane into a second plane parallel to the first plane.

16 . The optical system as recited in claim 11 , wherein the scanning light beam is formed into a line profile.

17 . The optical system as recited in claim 16 , wherein the line profile of the scanning light beam, due to the rotation of the mirror surfaces, does not rotate about a propagation direction.

18 . A vehicle that includes an optical system, the optical system comprising:
at least one optical transmitter; at least one optical detector, the optical transmitter being configured to emit a scanning light beam into surroundings along a first beam path, and the optical detector being configured to receive a reflected light beam from the surroundings along a second beam path; and two mirror surfaces situated in at least one of the first beam path and the second beam path, the two mirror surfaces being tilted relative to one another by 90° and deflect the light beam from a first plane into a second plane parallel to the first plane, wherein the mirror surfaces are rotatably supported and coupled to one another in such a way that when the mirror surfaces are rotated together about a rotational axis perpendicular to the two planes, scanning of the surroundings takes place in such a way that no tilting of the light beam occurs during the rotation, beamforming of the scanning light beam taking place, at least partially, via a curvature of the two mirror surfaces and/or at least partially via a beamformer in the first beam path; wherein the optical system is installed in the vehicle in such a way that the scanning light beam scans the surroundings of the vehicle horizontally.

19 . The vehicle as recited in claim 18 , wherein the optical system provides a continuous horizontal field of view of at least 200°.

20 . The vehicle as recited in claim 18 , wherein the optical system provides a continuous horizontal field of view of at least 250°.

21 . The vehicle as recited in claim 18 , wherein the optical system provides a continuous horizontal field of view of at least 300°.

22 . The vehicle as recited in claim 19 , wherein the optical system is situated with a center of its continuous field of view in a main driving direction of the vehicle.

23 . The vehicle as recited in claim 19 , wherein the optical system is situated with a center of its continuous field of view opposite a main driving direction of the vehicle.

Assignees

• Bosch Gmbh Robert

Inventors

• Spiessberger Stefan

Classifications

• G01S17/931 Primary

  of land vehicles · CPC title

• B60W40/02

  related to ambient conditions · CPC title

• G01S7/4812 Primary

  transmitted and received beams following a coaxial path · CPC title

• G01S17/42

  Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S17/46) · CPC title

• G01S7/4817 Primary

  relating to scanning · CPC title