Optical module, lidar and vehicle

Abstract

This application provides an optical module including a base, a light guiding module, and a light emitting / receiving module. A first surface of the base has a first mounting area and a second mounting area. The first mounting area has a first positioning groove, and the second mounting area has at least one second positioning groove. Each light guide element of the light guiding module is at least partially embedded in one of the second positioning grooves. The light emitting / receiving module is at least partially embedded in the first positioning groove. The light emitting / receiving module is used to emit detection light or to receive detection light reflected from a target. This application also provides a laser radar including the above-described optical module and a vehicle including the above-described laser radar.

Claims

1. An optical module, improved in that it comprises: The base includes a first surface, the first surface having a first mounting area and a second mounting area; The first mounting area has a first positioning slot, and the second mounting area has at least one second positioning slot; a light guiding module includes at least one light guiding element, each light guiding element being at least partially embedded in one of the second positioning slots, and all light guiding elements sharing a common optical axis; and a light emitting / receiving module, at least partially embedded in the first positioning slot, such that the light emitting / receiving module is located on the optical axis of the light guiding module; the light emitting / receiving module is used to emit probe light or to receive probe light reflected from the target under test; wherein, when the light emitting / receiving module is used to emit probe light, the light guiding module is used to receive and change the emission direction of the probe light so that the probe light is incident on the target under test; when the light emitting / receiving module is used to receive probe light reflected from the target under test, the light guiding module is used to receive the probe light reflected from the target under test and converge the probe light to the light emitting / receiving module.

2. The optical module as described in claim 1, wherein, The base includes a substrate and an insulating layer covering the surface of the substrate. The base also includes a second surface disposed opposite to the first surface. Both the first surface and the second surface are surfaces of the insulating layer that face away from the substrate. A portion of the substrate is exposed on the second surface to enable the optical emitting / receiving module to be grounded.

3. The optical module as described in claim 2, wherein, The height of the second mounting area from the second surface is less than the height of the first mounting area from the second surface.

4. The optical module as described in claim 2, wherein, When the light emitting / receiving module is used to emit the detection light, one side of the light emitting / receiving module is attached to the insulating layer and at least partially embedded in the first positioning groove. The light emitting / receiving module includes a metal wire, which is used to electrically connect the light emitting / receiving module and the substrate.

5. The optical module as described in claim 2, wherein, The optical module further includes a circuit assembly, which is electrically connected to the light emitting / receiving module. When the light emitting / receiving module emits the detection light, the circuit assembly supplies power to the light emitting / receiving module to control the light emitting / receiving module to emit light. Alternatively, when the light emitting / receiving module receives the detection light, the light emitting / receiving module converts the detection light signal into an electrical signal, and the circuit assembly receives the electrical signal.

6. The optical module as described in claim 5, wherein, The optical emitting / receiving module is embedded in the first positioning groove on one side near the insulating layer, and the circuit component is located in the first mounting area and is attached to the surface of the optical emitting / receiving module on one side away from the optical guiding module.

7. The optical module as described in claim 1, wherein, The light guide includes a light-transmitting part and a fixing part; the light-transmitting part is used to fix a lens with diopter, and the lens is used to receive and change the emission direction of the detection light; the fixing part is connected to the light-transmitting part, and the fixing part is embedded in the second positioning groove.

8. The optical module as described in claim 7, wherein, The fixing part has at least one positioning hole so that the fixing part can be fixed to the base by positioning pin or bolt.

9. A laser radar, improved in that it includes: Two optical modules as described in any one of claims 1 to 8, one of which is a transmitting optical module and the other is a receiving optical module; In the transmitting optical module, the light transmitting / receiving module is used to emit the probe light so that the probe light is incident on the target to be tested; in the receiving optical module, the light transmitting / receiving module is used to receive the probe light reflected back from the target to be tested.

10. A vehicle, wherein the improvement comprises: ontology; And a laser radar as described in claim 9, the laser radar being mounted on the body.

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