CN212965408U - Quick matching device and debugging system - Google Patents
Quick matching device and debugging system Download PDFInfo
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- CN212965408U CN212965408U CN202021729561.2U CN202021729561U CN212965408U CN 212965408 U CN212965408 U CN 212965408U CN 202021729561 U CN202021729561 U CN 202021729561U CN 212965408 U CN212965408 U CN 212965408U
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Abstract
The application relates to a quick matching device and a debugging system, wherein the quick matching device comprises a light convergence mechanism and a laser radar system to be tested; the laser radar system to be tested comprises a detector and a receiving lens; the receiving lens, the light converging mechanism and the detector are sequentially arranged along a receiving light path; the receiving lens is used for receiving the light reflected by the target object; the light rays are projected to the detector through the receiving lens and the light ray converging mechanism in sequence; the light converging mechanism comprises a first side surface and a second side surface opposite to the first side surface; the receiving lens is arranged towards the first side surface; the detector is disposed toward the second side. The distance between multiplicable receiving lens and the detector of this application can observe the position of facula and detector simultaneously at the in-process of debugging, avoids needing to carry out blind accent to can realize quick alignment, and then reduced the matching time of receiving system and detector, improved laser radar system's debugging efficiency.
Description
Technical Field
The application relates to the technical field of photoelectric information, in particular to a quick matching device and a debugging system.
Background
With the development of detection and ranging technology, lidar systems have emerged. In the existing laser radar system, it is difficult to realize a large size of an APD (Avalanche photodiode) due to a limit in performance. Meanwhile, the large size of the APD also easily causes the increase of the noise floor of the system. Therefore, the current lidar system generally adopts an APD with a smaller size and is matched with a receiving lens with a smaller image plane size. The smaller image plane size means that the focal length of the receiving lens is short, so the current laser radar is generally short-focus, and the receiving lens is arranged close to the APD.
However, in the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the receiving lens is short in focal length, the positions of light spots and APDs are difficult to observe simultaneously in the debugging process, blind debugging can only be performed, and the problem of low debugging efficiency exists.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a fast matching apparatus and a debugging system capable of improving debugging efficiency.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a fast matching apparatus, including a light converging mechanism and a laser radar system to be measured; the laser radar system to be tested comprises a detector and a receiving lens; the receiving lens, the light converging mechanism and the detector are sequentially arranged along a receiving light path;
the receiving lens is used for receiving the light reflected by the target object; the light rays are projected to the detector through the receiving lens and the light ray converging mechanism in sequence;
the light converging mechanism comprises a first side surface and a second side surface opposite to the first side surface; the receiving lens is arranged towards the first side surface; the detector is disposed toward the second side.
In one embodiment, the receiving lens is arranged at twice the focal length of the light converging mechanism; the second side detector is arranged at twice the focal length of the light converging mechanism.
In one embodiment, the fast matching device further comprises a polarization separator arranged between the receiving lens and the light converging mechanism;
the light converging mechanism is arranged on a transmission light path of the polarization separator.
In one embodiment, the fast matching device further comprises an infrared camera device;
the infrared camera device is arranged on a reflection light path of the polarization separator.
In one embodiment, the polarization separator is a beam splitter prism, a polarization beam splitter, or a beam splitting grating.
In one embodiment, the light converging means is a fixed focal length optical means.
In one embodiment, the light converging mechanism is a convex lens, a lens group or an imaging lens.
In one embodiment, the convex lens is a plano-convex lens, a biconvex lens, or a meniscus lens.
In one embodiment, the detector is an APD.
On the other hand, the embodiment of the present application further provides a debugging system, which includes the fast matching device in any of the above embodiments.
One of the above technical solutions has the following advantages and beneficial effects:
receiving lens, light convergence mechanism and detector set gradually along receiving light path, and the light that the target object reflects loops through receiving lens and light convergence mechanism and projects on the detector to the distance between multiplicable receiving lens and the detector realizes observing the position of facula and detector simultaneously at the in-process of debugging, avoids carrying out blind accent, and then can realize quick alignment, reduces the matching time of receiving lens and detector, and improves debugging efficiency.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the subject matter of the present application.
FIG. 1 is a first schematic block diagram of a fast matching apparatus according to an embodiment;
FIG. 2 is a second schematic block diagram of a fast matching apparatus in one embodiment;
fig. 3 is a third schematic block diagram of a fast matching apparatus according to an embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "disposed," "first side," "second side," and the like as used herein are for illustrative purposes only.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
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.
In one embodiment, as shown in fig. 1, a fast matching apparatus is provided, which includes a light converging mechanism 120 and a laser radar system under test; the laser radar system to be tested comprises a detector 130 and a receiving lens 110; the receiving lens 110, the light converging mechanism 120 and the detector 130 are sequentially arranged along a receiving light path;
the receiving lens 110 is used for receiving light reflected by a target object; the light rays are projected onto the detector 130 through the receiving lens 110 and the light ray converging mechanism 120 in sequence;
wherein the light converging mechanism 120 comprises a first side and a second side opposite to the first side; the receiving lens 110 is disposed toward the first side; detector 130 is disposed toward the second side.
Specifically, the laser radar system to be tested may be a laser radar receiving system or a laser radar transmitting and receiving system. The rapid matching device can be applied to the production debugging process of a laser radar system and is used for achieving rapid matching of the receiving lens and the detector. The laser radar system to be measured may be any type of laser radar system, and the application is not particularly limited thereto.
After the detection light is emitted to the detection area, the target object located in the detection area reflects the detection light to obtain the light reflected by the target object. The fast matching device of the present application includes a receiving lens 110, a light converging mechanism 120, and a detector 130, where the receiving lens 110, the light converging mechanism 120, and the detector 130 are sequentially disposed along a receiving optical path, and the receiving optical path may be a conducting path of light reflected by a target object. The light converging mechanism 120 includes a first side surface and a second side surface, the first side surface is opposite to the second side surface, the receiving lens 110 faces the first side surface device, and the detector 130 faces the second side surface, that is, the receiving lens 110, the first side surface of the light converging mechanism 120, the second side surface of the light converging mechanism 120, and the detector 130 are sequentially disposed.
The light reflected by the target object is transmitted to the receiving lens 110, and is projected on the detector 130 through the receiving lens 110 and the light converging mechanism 120 in sequence. The detector 130 performs photoelectric conversion on the light reflected by the target object to obtain an electrical signal, and performs corresponding data processing calculation on the electrical signal to obtain an image of the object. The light converging mechanism 120 may be implemented by a single device, or may be implemented by combining a plurality of devices. In one example, detector 130 is an APD.
Because the receiving lens 110 and the detector 130 are respectively located at two sides of the light converging mechanism 120, the focal length of the whole laser radar system to be tested can be increased, so that the positions of the light spot and the detector 130 can be observed conveniently, and the rapid alignment can be realized in the debugging process. Further, the setting relationship between the receiving lens 110 and the light converging mechanism 120 may be determined according to lens parameters of the receiving lens 110, optical parameters of the light converging mechanism 120, and/or expected imaging parameters (i.e., imaging parameters of the lidar system to be measured after the lidar system to be measured is adjusted), and further, the receiving lens 110 may be located at a focus of the light converging mechanism 120. Similarly, the arrangement relationship between the light converging mechanism 120 and the detector 130 can be determined according to the optical parameters of the light converging mechanism 120, the parameters of the detector 130 and/or the expected imaging parameters, and further, the detector 130 can be located at the focal point of the light converging mechanism 120.
In the above fast matching apparatus, the receiving lens 110, the light converging mechanism 120 and the detector 130 are sequentially arranged along the receiving light path, the receiving lens 110 receives the light reflected by the target object, and the light reflected by the target object sequentially passes through the receiving lens 110 and the light converging mechanism 120 to be projected onto the detector 130, so that the distance between the receiving lens 110 and the detector 130 can be increased, the positions of the light spot and the detector 130 can be observed simultaneously in the debugging process, blind debugging is avoided, and fast alignment can be realized, the matching time of the receiving lens 110 and the detector 130 is reduced, and the debugging efficiency is improved.
In one embodiment, receiving lens 110 is positioned at twice the focal length of light converging mechanism 120; the detector 130 is disposed at twice the focal length of the light converging means 120.
Specifically, when the light converging means 120 is composed of a single optical device, the optical center of the light converging means 120 is the optical center of the optical device, and the focal length of the light converging means 120 is the focal length of the optical device. When the light converging means 120 is composed of a plurality of optical devices, for example, the light converging means 120 is a lens group composed of a plurality of lenses, the optical center of the light converging means 120 may be the optical center of the lens group, and the focal length of the light converging means 120 may be the focal length of the lens group.
Specifically, the distance between the receiving lens 110 and the optical center of the light converging mechanism 120 may be twice the focal length of the light converging mechanism 120, and the distance between the detector 130 and the optical center of the light converging mechanism 120 may be twice the focal length of the light converging mechanism 120, that is, the receiving lens 110 and the detector 130 are respectively placed at twice the focal length on both sides of the light converging mechanism 120. So, can make the formation of image of detector 130 department and the formation of image of receiving lens 110 department wait big and handstand each other to when increasing whole laser radar system focus that awaits measuring, avoid again causing the influence to the follow-up projection formation of image of the laser radar system that awaits measuring, and need not to add extra in the laser radar system that awaits measuring, be used for the adjustment, change the circuit or the module of formation of image size, and then can reduce matching cost and production debugging cost.
In one embodiment, as shown in fig. 2, the fast matching apparatus further includes a polarization separator 140 disposed between the receiving lens 110 and the light converging mechanism 120; the light converging means 120 is disposed on the transmission light path of the polarization separator 140. The polarization separator 140 may be composed of a single optical device or a combination of a plurality of optical devices.
The polarization separator 140 is used to separate the horizontal polarization and the vertical polarization of the light reflected by the target object, and specifically, the polarization separator 140 may transmit one of the polarized light and reflect the other polarized light, so that the horizontal polarization and the vertical polarization are respectively transmitted through the transmission light path and the reflection light path, thereby realizing the separation of the horizontal polarization and the vertical polarization.
The polarization separator 140 is disposed between the receiving lens 110 and the light converging mechanism 120, and the light converging mechanism 120 is disposed on the transmission light path of the polarization separator 140. The light reflected by the target object may be projected onto the detector 130 through the receiving lens 110, the polarization separator 140, and the light converging mechanism 120 in sequence. At the same time, it can be observed through the reflected light path of the polarization separator 140 whether the positions of the light spot and the detector 130 are matched. The polarization separator 140 is arranged between the receiving lens 110 and the light converging mechanism 120, and the light converging mechanism 120 is arranged on the transmission light path of the polarization separator 140, so that the cooperation between the light spot and the detector 130 can be observed on the reflection light path of the polarization separator 140, and the debugging efficiency can be improved.
In one embodiment, as shown in fig. 3, the fast matching apparatus further includes an infrared camera device 150; an infrared camera 150 is provided on the reflected light path of the polarization separator 140. Specifically, the fast matching apparatus further includes an infrared image pickup device 150 disposed on the reflection optical path of the polarization splitter 140. Through arranging infrared camera device 150 in the reflection side of polarization separator 140 to usable infrared camera device 150 monitors facula and detector 130, and observes facula and detector 130's position simultaneously, and then can realize quick alignment in the debugging, improves debugging efficiency.
In one embodiment, the polarization separator 140 is a beam splitter prism, a polarization beam splitter, or a beam splitting grating. The polarization separator 140 may be composed of a single optical device or a plurality of optical devices, and further, the polarization separator 140 may be any one of a beam splitter prism, a polarization beam splitter, and a beam splitting grating. It should be noted that the polarization separator 140 in the present application is not limited to the above-mentioned devices, and those skilled in the art can select a corresponding observation device as the polarization separator 140 according to actual situations and design requirements.
In one embodiment, the light converging means 120 is a fixed focal length optical means.
Specifically, the focal length of the light converging means 120 may be a fixed focal length, so that the cost of the fast matching device may be reduced.
In one embodiment, the light converging mechanism 120 is a convex lens, a lens group, or an imaging lens.
Specifically, the light converging means 120 may be implemented by a single device, or may be implemented by combining a plurality of devices. Further, the light converging mechanism 120 may be any one or any combination of a convex lens of a single lens, a lens group composed of multiple lenses, or an imaging lens. It should be noted that the light converging mechanism 120 is not limited to the above-mentioned cases, and those skilled in the art can determine the specific composition of the light converging mechanism 120 according to the actual situation and the design requirement.
In one example, the light converging means 120 may be a single lens convex lens of fixed focal length, which may reduce the cost of the fast matching device.
In one embodiment, the convex lens is a plano-convex lens, a biconvex lens, or a meniscus lens.
Specifically, when the light converging means 120 includes a convex lens, the convex lens may be a plano-convex lens, a biconvex lens, or a meniscus lens, and further, the light converging means 120 may be a plano-convex lens of a single lens, a biconvex lens of a single lens, or a meniscus lens of a single lens. In one example, the convex lens may be a plano-convex lens, thereby reducing the difficulty of manufacturing the light converging mechanism 120 and reducing the cost of the fast-matching device.
In one embodiment, a debugging system is provided, which comprises the fast matching device in any one of the above embodiments. Specifically, the debugging system may be a system for debugging the laser radar system during the production modulation process of the laser radar system, so as to adjust and test whether the positions of the receiving lens 110 and the detector 130 of the laser radar system are matched. Further, the commissioning system may comprise further features, such as matching means for a lidar transmission system, etc.
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 express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A fast matching device is characterized by comprising a light convergence mechanism and a laser radar system to be detected; the laser radar system to be detected comprises a detector and a receiving lens; the receiving lens, the light converging mechanism and the detector are sequentially arranged along a receiving light path;
the receiving lens is used for receiving light rays reflected by the target object; the light rays are projected onto the detector through the receiving lens and the light ray converging mechanism in sequence;
the light converging mechanism comprises a first side surface and a second side surface opposite to the first side surface; the receiving lens is arranged towards the first side face; the detector is disposed toward the second side.
2. The quick matching device of claim 1, wherein the receiving lens is disposed at twice the focal length of the light converging mechanism; the second side face of the detector is arranged at twice the focal length of the light converging mechanism.
3. The fast matching apparatus of claim 1, further comprising a polarization separator disposed between said receiving lens and said light converging mechanism;
the light converging mechanism is arranged on a transmission light path of the polarization separator.
4. The quick matching device according to claim 3, further comprising an infrared camera;
the infrared camera device is arranged on a reflection light path of the polarization separator.
5. The fast matching apparatus of claim 3, wherein the polarization splitter is a beam splitter prism, a polarization beam splitter, or a beam splitting grating.
6. The quick-match apparatus according to any one of claims 1 to 5, wherein the light converging means is a fixed focal length optical means.
7. The fast matching device according to any of claims 1 to 5, wherein said light converging means is a convex lens, a lens group or an imaging lens.
8. The quick-match apparatus of claim 7, wherein the convex lens is a plano-convex lens, a biconvex lens, or a meniscus lens.
9. The fast-matching device of any of claims 1 to 5, wherein said detector is an APD.
10. A debugging system comprising a quick matching apparatus according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021729561.2U CN212965408U (en) | 2020-08-17 | 2020-08-17 | Quick matching device and debugging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021729561.2U CN212965408U (en) | 2020-08-17 | 2020-08-17 | Quick matching device and debugging system |
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| CN212965408U true CN212965408U (en) | 2021-04-13 |
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