CN210690806U - Laser radar receiving system - Google Patents
Laser radar receiving system Download PDFInfo
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- CN210690806U CN210690806U CN201920337994.4U CN201920337994U CN210690806U CN 210690806 U CN210690806 U CN 210690806U CN 201920337994 U CN201920337994 U CN 201920337994U CN 210690806 U CN210690806 U CN 210690806U
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Abstract
The utility model relates to a laser radar receiving system, this system includes: the light reflection device comprises a mirror array consisting of at least two mirrors, and each mirror in the mirror array receives a return light signal and reflects the return light signal; the return light signal is a return light signal which carries the relevant information of the target object after the emergent light signal responds to the target object; and the light receiving module is used for receiving the light signal reflected by the light reflecting device. In the system, the mirror array composed of at least two mirrors included in the light reflection device can enlarge the receiving area of the return light signal, enhance the intensity of the received return light signal and further improve the received return light signal of the light receiving module.
Description
Technical Field
The utility model relates to a laser radar field especially relates to a laser radar receiving system.
Background
In the solid-state laser radar, a light reflection device is a core device of the solid-state laser radar, a return light signal of a target object enters a receiving module of the laser radar through the turning back of a reflector of the light reflection device, and the receiving module of the laser radar can acquire information of the target object according to the received light signal.
Generally, the intensity of the optical signal received by the laser receiver is limited by the area of the mirror on the optical reflection device that is used to respond to the optical beam. The larger the area of the mirror on the light reflecting device, the stronger the intensity of the received light signal. However, since the light reflecting device suffers from problems of current materials and processes, it is difficult to make the area of the mirror for responding to the light beam large.
Therefore, the conventional solid-state laser radar receiving system has the problem that the received optical signal is weak.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a lidar receiving system aiming at the problem that the received optical signal is weak in the conventional solid-state lidar receiving system.
A lidar receiving system comprising:
the light reflection device comprises a mirror array consisting of at least two mirrors, and each mirror in the mirror array receives a return light signal and reflects the return light signal; the return light signal is a return light signal which carries the relevant information of the target object after the emergent light signal responds to the target object;
and the light receiving module is used for receiving the light signal reflected by the light reflecting device.
In one embodiment, the light reflection device is further configured to receive an optical signal emitted by the laser emission system and emit the optical signal to the target object.
In one embodiment, the optical reflection device is configured to receive an optical signal emitted by the laser emission system by using a mirror located at a central portion of the mirror array, and emit the optical signal to the target object.
In one embodiment, the mirror is a plane mirror, a spherical mirror, or an aspherical mirror.
In one embodiment, the mirrors in the mirror array are circular, rectangular or any polygon in shape.
In one embodiment, the mirror array is any one of a rectangular array, a circular array, or a shaped array.
In one embodiment, the rectangular array distribution is an m × n array distribution, where m and n are integers.
In one embodiment, the light receiving module is further configured to obtain information of the target object according to the light signal reflected by the light reflecting device.
In one embodiment, the light receiving module comprises a focusing optical lens group and a receiver; the focusing optical lens group is used for converging the received optical signal on the receiver, and the receiver is used for receiving the optical signal.
In one embodiment, the laser emission system comprises an emitter and a collimating optical lens group; the emitter is used for emitting emergent laser, and the collimating optical lens group is used for collimating the emergent laser emitted by the emitter.
The laser radar receiving system provided by the above embodiment includes a light reflection device, which includes a mirror array composed of at least two mirrors, and each mirror in the mirror array receives and reflects a return light signal; the return light signal is a return light signal which carries the relevant information of the target object after the emergent light signal responds to the target object; and the light receiving module is used for receiving the light signal reflected by the light reflecting device. In the system, the mirror array composed of at least two mirrors included in the light reflection device can enlarge the receiving area of the return light signal, enhance the intensity of the received return light signal and further improve the intensity of the return light signal received by the light receiving module.
Drawings
FIG. 1 is a schematic diagram of a lidar receiving system provided in one embodiment;
FIG. 2 is a schematic diagram of a mirror array according to an embodiment;
FIG. 3 is a schematic diagram of an exit path of a lidar according to an embodiment;
FIG. 4 is a schematic view of a mirror array provided in one embodiment;
FIG. 5 is a schematic diagram of a mirror array according to an embodiment.
Description of reference numerals:
a light reflection device 100; a light receiving module 200;
a mirror 101; a central mirror 102;
a target object 300; laser emission system 400.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The traditional laser radar receiving system has the problem that the received optical signal is weak. Therefore, the embodiment of the present application provides a laser radar receiving system, which aims to solve the above technical problems of the conventional technology.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a schematic diagram of a lidar receiving system according to an embodiment. FIG. 2 is a schematic diagram of a mirror array according to an embodiment. As shown in fig. 1 and 2, the laser radar receiving system 10 includes: a light reflection device 100 including a mirror array composed of at least two mirrors, each mirror 101 in the mirror array receiving and reflecting a return light signal; the return light signal is a return light signal which carries the relevant information of the target object after the emergent light signal responds to the target object; the light receiving module 200 is configured to receive the light signal reflected by the light reflecting device 100.
Specifically, the light reflection apparatus 100 includes a mirror array composed of at least two mirrors, and each mirror 101 in the mirror array receives and reflects the return light signal. The return light signal is the return light signal which carries the relevant information of the target object after the emergent light signal responds to the target object. Optionally, the mirror array may be a rectangular array, or may be a circular array or a shaped array. Alternatively, the mirrors 101 in the mirror array may be plane mirrors, spherical mirrors or aspherical mirrors. Optionally, the mirrors 101 in the mirror array are circular, rectangular or any polygon in shape. For example, the light reflection device 100 may include a 3 × 3 rectangular array of mirrors, or may include a 4 × 3 rectangular array of mirrors, or the light reflection device 100 may include a circular array of mirrors.
The light receiving module 200 is configured to receive the light signal reflected by the light reflecting device 100. Alternatively, the light receiving module 200 may include a focusing optical lens group for converging the received light signal on a receiver, and a receiver for receiving the light signal. Alternatively, the number of receivers may be one or more. Alternatively, the plurality of receivers may be arranged in one dimension or two dimensions.
In this embodiment, the mirror array composed of at least two mirrors included in the light reflection device can enlarge the receiving area of the return light signal, enhance the intensity of the return light signal received by the light reflection device, and further improve the intensity of the return light signal received by the light receiving module.
Fig. 3 is a schematic diagram of an exit optical path of a laser radar according to an embodiment. FIG. 4 is a schematic diagram of a mirror array according to an embodiment. In the scenario of emitting laser signals by the solid-state laser radar, on the basis of the foregoing embodiment, as an alternative implementation manner, as shown in fig. 3, the light reflection apparatus 100 is further configured to receive light signals emitted by the laser emission system 400 and emit the light signals to the target object 300.
Specifically, as shown in fig. 3, in an outgoing light path of the solid-state laser radar, the light reflection apparatus 100 is further configured to receive collimated outgoing laser light emitted by the laser emission system 400, and emit the collimated outgoing laser light to the target object 300. Optionally, the laser emission system 400 includes an emitter and a collimating optical lens group, where the emitter is configured to emit outgoing laser light, and the collimating optical lens group is configured to collimate the outgoing laser light emitted by the emitter. Optionally, the light reflection apparatus 100 is configured to receive the collimated outgoing laser light emitted by the laser emission system 400 by using the mirror 101 located at the central portion of the mirror array, and emit the received collimated outgoing laser light to the target object 300. Alternatively, one mirror located in the center of the mirror array in the light reflection apparatus 100 may receive the collimated outgoing laser beam emitted by the laser emission system 400 and emit the received collimated outgoing laser beam to the target object 300, or a plurality of mirrors located in the center of the mirror array in the light reflection apparatus 100 may receive the collimated outgoing laser beam emitted by the laser emission system 400 and emit the received collimated outgoing laser beam to the target object 300. Taking fig. 4 as an example, in the outgoing light path, the central reflecting mirror 102 located at the central portion of the mirror array in the light reflecting device 100 receives the collimated outgoing laser light emitted by the laser emitting system 400, and emits the received collimated outgoing laser light to the target object 300; on the other hand, in the reception optical path, each mirror 101 in the mirror array receives the return optical signal and reflects the return optical signal.
In this embodiment, one or more mirrors located at the central portion of the mirror array in the optical reflection device can receive the optical signal emitted by the laser emission system and emit the optical signal to the target object, thereby improving the receiving rate of the optical reflection device for the optical signal emitted by the laser emission system.
FIG. 5 is a schematic diagram of a mirror array according to an embodiment. As shown in fig. 5, on the basis of the above embodiment, as an alternative implementation mode, the mirror array is any one of a rectangular array, a circular array or an irregular array.
Specifically, the mirror array is any one of a rectangular array, a circular array, or an irregularly shaped array. Optionally, the distance between the reflectors 101 in the rectangular array, the circular array, or the irregular array may be a fixed distance, or may be adjusted according to actual conditions, as long as the array shape is a rectangular shape, a circular shape, or an irregular shape. In the present embodiment, a circular array is taken as an example for explanation, and as shown in fig. 5, the mirror arrays are distributed in a circular array in the light reflection device 100, and the spacing between the mirrors 101 is a fixed spacing.
In this embodiment, the array distribution shape of the mirror array can be adjusted according to actual conditions, so that the receiving area of the light reflection device for the return light signal can be enlarged, the intensity of the return light signal received by the light reflection device is enhanced, and the intensity of the return light signal received by the light reception module is further improved.
With continued reference to fig. 2, in a scenario where the mirror arrays are distributed in a rectangular array on the light reflection apparatus 100, on the basis of the above embodiment, as an alternative implementation manner, the rectangular array is distributed in an m × n array, where m and n are both integers.
Specifically, in the scene where the mirror arrays are distributed in a rectangular array in the light reflection device 100, the rectangular array distribution is an m × n array distribution, where m and n are integers. Alternatively, the values of m and n may be two identical integers or two different integers.
In this embodiment, the mirror arrays distributed in the light reflection device in the rectangular array can enlarge the receiving area of the light reflection device for the return light signal, enhance the intensity of the return light signal received by the light reflection device, and further improve the intensity of the return light signal received by the light reception module.
On the basis of the foregoing embodiment, as an optional implementation manner, the light receiving module 200 is further configured to obtain information of the target object 300 according to the light signal reflected by the light reflecting device 100.
Specifically, after receiving the optical signal reflected by the mirror array in the optical reflection device 100, the light receiving module 200 acquires the information of the target object 300 according to the received optical signal. In this embodiment, since the light reflection device enlarges the receiving area of the return light signal and increases the intensity of the received return light signal, the intensity of the light signal received by the light reception module is increased, and the accuracy of the target object information acquired by the light reception module is further increased.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A lidar receiving system, the system comprising:
the light reflection device comprises a mirror array consisting of at least two mirrors, and each mirror in the mirror array receives a return light signal and reflects the return light signal; the return light signal is a return light signal which carries the relevant information of the target object after the emergent light signal responds to the target object;
and the light receiving module is used for receiving the light signal reflected by the light reflecting device.
2. The system of claim 1, wherein the light reflection device is further configured to receive a light signal emitted from the laser emitting system and emit the light signal to the target object.
3. The system of claim 2, wherein the optical reflection device is configured to receive the optical signal emitted from the laser emitting system by using a mirror located at a central portion of the mirror array and emit the optical signal to the target object.
4. The system of claim 1, wherein the mirrors in the array of mirrors are flat mirrors, spherical mirrors, or aspherical mirrors.
5. The system of claim 1, wherein the mirrors in the mirror array are circular, rectangular, or any polygon in shape.
6. The system of claim 1, wherein the array of mirrors is any one of a rectangular array, a circular array, or an array of shaped shapes.
7. The system of claim 6, wherein the rectangular array distribution is an m x n array distribution, wherein m and n are integers.
8. The system of claim 1, wherein the light receiving module is further configured to obtain information of the target object according to the light signal reflected by the light reflecting device.
9. The system of claim 8, wherein the light receiving module comprises a focusing optical lens group and a receiver.
10. The system of claim 9, wherein the focusing optics group is configured to focus the received optical signal onto the receiver, and the receiver is configured to receive the optical signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920337994.4U CN210690806U (en) | 2019-03-18 | 2019-03-18 | Laser radar receiving system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920337994.4U CN210690806U (en) | 2019-03-18 | 2019-03-18 | Laser radar receiving system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975782A (en) * | 2019-03-18 | 2019-07-05 | 深圳市速腾聚创科技有限公司 | Laser radar receives system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975782A (en) * | 2019-03-18 | 2019-07-05 | 深圳市速腾聚创科技有限公司 | Laser radar receives system and method |
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