Laser-Emitting Method and Apparatus, Detection Apparatus and Mobile Platform
A laser emitting apparatus includes a light beam generation apparatus and an optical assembly. The light beam generation apparatus is configured to generate a first light beam and a second light beam, where the first light beam is incident to the optical assembly and is emitted from the optical assembly, the second light beam is incident to the optical assembly and is emitted from the optical assembly, and a first spot formed by the first light beam in space and a second spot formed by the second light beam in space are separated in a horizontal direction.
1 . A laser emitting apparatus comprising:
a light beam generation apparatus configured to:
generate a first light beam; and
generate a second light beam; and
an optical assembly communicatively coupled to the light beam generation apparatus and configured to:
receive the first light beam;
emit, after the first light beam is incident to the optical assembly, the first light beam to form a first spot in space;
receive the second light beam; and
emit, after the second light beam is incident to the optical assembly, the second light beam to form a second spot in the space,
wherein the first spot and the second spot are separated in a horizontal direction in relation to the optical assembly.
2 . The laser emitting apparatus of claim 1 , wherein the first light beam and the second light beam belong to a same beam.
3 . The laser emitting apparatus of claim 1 , wherein the light beam generation apparatus comprises:
a first light beam generation apparatus comprising a first laser light source, wherein the first laser light source comprises a first laser configured to generate the first light beam; and
a second light beam generation apparatus comprising a second laser light source, wherein the second laser light source comprises a second laser configured to generate the second light beam.
4 . The laser emitting apparatus of claim 1 , wherein the optical assembly comprises:
a first collimator comprising a first focal plane and configured to receive from a first position, the first light beam that is incident to the first collimator, wherein the first position is located on the first focal plane; and
a second collimator comprising a second focal plane and configured to receive, from a second position, the second light beam that is incident to the second collimator, wherein the second position is located on the second focal plane,
wherein the first position is located above or below a first focus of the first collimator, or the second position is located above or below a second focus of the second collimator.
5 . The laser emitting apparatus of claim 1 , wherein the optical assembly comprises a reflective prism comprising a right-angle edge, wherein the optical assembly is configured to receive the second light beam that is incident to the right-angle edge and that is not perpendicular to the right-angle edge.
6 . The laser emitting apparatus of claim 4 , wherein the optical assembly further comprises;
a first wedge prism configured to splice the first light beam in a vertical direction, and
a second wedge prism configured to splice the second light beam in the vertical direction.
7 . The laser emitting apparatus of claim 5 , wherein the optical assembly further comprises:
a first wedge prism configured to splice the first light beam in a vertical direction; and
a second wedge prism configured to splice the second light beam in the vertical direction.
8 . The laser emitting apparatus of claim 4 , wherein the optical assembly further comprises a homogenizer.
9 . The laser emitting apparatus of claim 1 , wherein a splicing field of view of the first spot and the second spot in a vertical direction is 25 degrees to 30 degrees.
10 . The laser emitting apparatus of claim 1 , wherein a difference between a first angle of spread of the first spot and a second angle of spread of the second spot in the horizontal direction is 0.3 degrees to 0.6 degrees.
11 . A detection apparatus comprising:
a laser emitting apparatus comprising:
a light beam generation apparatus configured to:
generate a first light beam; and
generate a second light beam; and
an optical assembly communicatively coupled to the light beam generation apparatus and configured to:
receive the first light beam;
emit, after the first light beam is incident to the optical assembly, the first light beam to form a first spot in space;
receive the second light beam; and
emit, after the second light beam is incident to the optical assembly, the second light beam to form a second spot in space;
wherein the first spot and the second spot are separated in a horizontal direction in relation to the optical assembly; and
a receiving apparatus comprising:
a detector comprising:
a first effective area corresponding to a first imaging area of a first echo of the first spot on the detector; and
a second effective area corresponding to a second imaging area of a second echo of the second spot on the detector,
wherein the first effective area and the second effective area are separated in the horizontal direction.
12 . The detection apparatus of claim 11 , wherein the first light beam and the second light beam belong to a same beam.
13 . The detection apparatus of claim 11 , wherein the light beam generation apparatus comprises:
a first light beam generation apparatus comprising a first laser light source, wherein the first laser light source comprises at least one first laser configured to generate the first light beam; and
a second light beam generation apparatus comprising a second laser light source, wherein the second laser light source comprises at least one second laser configured to generate the second light beam.
14 . The detection apparatus of claim 11 , wherein the optical assembly comprises:
a first collimator comprising a first focal plane and configured to receive, from a first position, the first light beam that is incident to the first collimator, wherein the first position is located on the first focal plane; and
a second collimator comprising a second focal plane and configured to receive, from a second position, the second light beam that is incident to the second collimator, wherein the second position is located on the second focal plane,
wherein the first position is located above or below a first focus of the first collimator, or wherein the second position is located above or below a second focus of the second collimator.
15 . The detection apparatus of claim 11 , wherein the optical assembly comprises a reflective prism comprising a right-angle edge wherein the optical assembly is configured to receive the second light beam that is incident to the right-angle edge and that is not perpendicular to the right-angle edge.
16 . The detection apparatus of claim 14 , wherein the optical assembly further comprises:
a first wedge prism configured to splice the first light beam in a vertical direction; and
a second wedge prism configured to splice the second light beam in the vertical direction.
17 . The detection apparatus of claim 15 , wherein the optical assembly further comprises:
a first wedge prism configured to splice the first light beam in a vertical direction; and
a second wedge prism configured to splice the second light beam in the vertical direction.
18 . The detection apparatus of claim 14 , wherein the optical assembly further comprises a homogenizer.
19 . The detection apparatus of claim 11 , wherein a splicing field of view of the first spot and the second spot in a vertical direction is 25 degrees to 30 degrees.
20 . The detection apparatus of claim 11 , wherein a difference between a first angle of spread of the first spot and a second angle of spread of the second spot in the horizontal direction is 0.3 degrees to 0.6 degrees.