Optical lens adjusting device of multi-wavelength laser radar
By setting up a multi-wavelength optical lens adjustment device in the lidar and using a dual-reflection component and a rotating unit to achieve 360-degree rotation, the problem of high difficulty and low efficiency of multi-angle detection in complex environments of traditional lidar is solved, and a wider detection range and more efficient detection effect are achieved.
Patent Information
- Application Number
- CN202423264819.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-28
AI Technical Summary
Traditional lidar suffers from the problem of high difficulty and low efficiency in multi-angle detection under complex environments due to its single optical transmitter and receiver port.
The optical lens adjustment device of the multi-wavelength lidar uses a first and second reflective component to drive the receiving tube to rotate, forming a dual receiving and transmitting port. A rotating unit is set in each reflective component to achieve 360-degree rotation. Combined with a focusing component and a signal transceiver component, the detection range and efficiency are improved.
Multi-angle detection was achieved in complex environments, expanding the detection range and improving detection efficiency.
Smart Images
Figure CN223857397U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lidar technology, and in particular to an optical lens adjustment device for a multi-wavelength lidar. Background Technology
[0002] LiDAR (Light Detection and Ranging) is a scanning sensor that uses non-contact laser ranging technology. It detects targets by emitting a laser beam and acquires spatial parameters from the reflected beam. After photoelectric processing, it generates a precise three-dimensional image. This technology can accurately acquire high-precision physical spatial environment information and is widely used in industries such as geographic surveying, environmental monitoring, industrial scanning, and autonomous driving. Traditional LiDAR typically has only one optical transmitter / receiver port for receiving and transmitting light signals, which is difficult and inefficient for multi-angle detection in complex environments.
[0003] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content
[0004] The technical problem this invention aims to solve is that using a single optical transmitter / receiver port to receive and transmit optical signals is difficult and inefficient for multi-angle detection in complex environments.
[0005] The present invention adopts the following technical solution:
[0006] On one hand, an optical lens adjustment device for a multi-wavelength lidar is provided, comprising: a first reflective component 1, a second reflective component 2, a focusing component 3, and a signal transceiver component 4; the focusing component 3 is fixedly disposed inside the signal transceiver component 4, the second reflective component 2 is nested above the signal transceiver component 4, and the first reflective component 1 is nested above the second reflective component 2;
[0007] The first reflective assembly 1 is provided with a first receiving tube 10 and a first rotating unit 11. The first receiving tube 10 is fixedly mounted on the first rotating unit 11, and the first rotating unit 11 drives the first receiving tube 10 to rotate 360 degrees. The second reflective assembly 2 is provided with a second receiving tube 20 and a second rotating unit 21. The second receiving tube 20 is fixedly mounted on the second rotating unit 21, and the second rotating unit 21 drives the second receiving tube 20 to rotate 360 degrees. The first receiving tube 10 is provided with a first reflector 14, and the second receiving tube 20 is provided with a first filter 24.
[0008] Preferably, the first reflection assembly 1 further comprises a first upper lens barrel 12 and a first lower lens barrel 13, the first lower lens barrel 13 is nested above the second reflection assembly 2, the first rotating unit 11 is rotationally connected to the upper surface of the first lower lens barrel 13; the first reflector 14 is fixed at an angle of 45 degrees in the first receiving barrel 10, the first upper lens barrel 12 is arranged above the first lower lens barrel 13 and is fixedly connected to the first lower lens barrel 13, and the first receiving barrel 10 is fixedly arranged above the first rotating unit 11.
[0009] Preferably, the first upper lens barrel 12 is provided with a first transparent window 120, the first transparent window 120 is embedded on the first upper lens barrel 12, and the first receiving barrel 10 is provided with a first through hole 100, the diameter of the first through hole 100 is greater than or equal to the height of the first transparent window 120.
[0010] Preferably, the lower surface of the first upper lens barrel 12 is provided with a first accommodating position 121 for accommodating the first rotating unit 11, the first rotating unit 11 comprises a first motor 110, a first bevel gear 111, a first bearing disc 112 and a first lens 113, the motor shaft of the first motor 110 is fixedly connected to the first bevel gear 111, the edge of the first bearing disc 112 is provided with a first gear tooth 1120, the first gear tooth 1120 is engaged with the first bevel gear 111, and the first lens 113 is arranged on the upper surface of the first bearing disc 112 and is fixedly connected to the first bearing disc 112.
[0011] The first bearing disc 112 and the first lower lens barrel 13 are provided with a first ball 130 therebetween, the first ball 130 is used to ensure smooth rotation between the first bearing disc 112 and the first lower lens barrel 13.
[0012] Preferably, the second reflection assembly 2 further comprises a second upper lens barrel 22 and a second lower lens barrel 23, the first reflection assembly 1 is nested above the second upper lens barrel 22, and the second lower lens barrel 23 is nested above the signal transceiver assembly 4; the second rotating unit 21 is rotationally connected to the upper surface of the second lower lens barrel 23, the first filter 24 is fixed at an angle of 45 degrees in the second receiving barrel 20, the second upper lens barrel 22 is arranged above the second lower lens barrel 23 and is fixedly connected to the second lower lens barrel 23, and the second receiving barrel 20 is fixedly arranged above the second rotating unit 21.
[0013] Preferably, the second upper lens barrel 22 is provided with a second transparent window 220 embedded on the second upper lens barrel 22, and the second receiving barrel 20 is provided with a second through hole 200 with a diameter greater than or equal to the height of the second transparent window 220.
[0014] Preferably, the lower surface of the second upper lens barrel 22 is provided with a second accommodating position 221 for accommodating the second rotating unit 21, the second rotating unit 21 comprising a second motor 210, a second bevel gear 211, a second bearing disc 212 and a second lens 213, the motor shaft of the second motor 210 being fixedly connected with the second bevel gear 211, the edge of the second bearing disc 212 being provided with second gear teeth 2120 engaged with the second bevel gear 211, and the second lens 213 being arranged on the upper surface of the second bearing disc 212 and fixedly connected with the second bearing disc 212.
[0015] The second bearing disc 212 and the second lower lens barrel 23 are provided with second balls 230 for ensuring smooth rotation between the second bearing disc 212 and the second lower lens barrel 23.
[0016] Preferably, the light collecting assembly 3 comprises a first light collecting lens 30, a fixed lens barrel 31 and an adjusting lens frame 32, the fixed lens barrel 31 being embedded in the signal transceiver assembly 4, the adjusting lens frame 32 being arranged in the fixed lens barrel 31, and the first light collecting lens 30 being fixedly arranged in the adjusting lens frame 32.
[0017] The side wall of the fixed lens barrel 31 is provided with two adjusting members 310 oppositely arranged, the adjusting members 310 abutting against the adjusting lens frame 32 through the side wall of the fixed lens barrel 31, and the adjusting members 310 are used for adjusting the position of the adjusting lens frame 32.
[0018] Preferably, the signal transceiver assembly 4 comprises a fixed base 40, a signal unit 41 and a fixed bottom plate 42, the fixed lens barrel 31 being embedded in the fixed base 40, the bottom of the fixed base 40 being fixedly connected with the fixed bottom plate 42, and the signal unit 41 being fixedly arranged on the bottom plate.
[0019] The side wall of the fixed base 40 is provided with two adjusting through holes 400 corresponding to the adjusting members 310, and the adjusting through holes 400 facilitate the adjusting operation of the adjusting members 310.
[0020] Preferably, the inside of the signal unit 41 is provided with a plurality of light emitters 410 and a plurality of light receivers 411, the light emitters 410 are used for sending light signals to the outside, and the light receivers 411 are used for receiving external light signals to identify information.
[0021] Compared with the prior art, the beneficial effects of the utility model lie in: the utility model adopts first reflection assembly 1 and second reflection assembly 2, first reflection assembly 1 and second reflection assembly 2 are placed in stacks, form double receiving and emitting ports, and first rotation unit 11 is arranged in first reflection assembly 1, first rotation unit 11 drives first receiving cylinder 10 to rotate, second rotation unit 21 is arranged in second reflection assembly 2, second rotation unit 21 drives second receiving cylinder 20 to rotate, it is favorable for laser radar to detect in complex environment at multi-angle, and the detection range is also wider using two reflection assemblies, effectively improve detection range and detection efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed to be used in the embodiment of the utility model will be simply introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creating creative labor for the ordinary skilled in the art.
[0023] Figure 1 It is the whole structure schematic diagram of the optical lens adjusting device of the multi-wavelength laser radar provided by the embodiment of the utility model;
[0024] Figure 2a It is the first reflection assembly schematic diagram of the optical lens adjusting device of the multi-wavelength laser radar provided by the embodiment of the utility model;
[0025] Figure 2b It is the first rotation unit schematic diagram of the optical lens adjusting device of the multi-wavelength laser radar provided by the embodiment of the utility model;
[0026] Figure 2c It is the second reflection assembly and light collecting assembly schematic diagram of the optical lens adjusting device of the multi-wavelength laser radar provided by the embodiment of the utility model;
[0027] Figure 3 It is the first ball schematic diagram of the optical lens adjusting device of the multi-wavelength laser radar provided by the embodiment of the utility model;
[0028] Figure 4 It is the second ball schematic diagram of the optical lens adjusting device of the multi-wavelength laser radar provided by the embodiment of the utility model;
[0029] Figure 5 This is a schematic diagram of the second focusing lens of an optical lens adjustment device for a multi-wavelength lidar provided in an embodiment of the present invention;
[0030] Figure 6 This is a schematic diagram of the signal unit of an optical lens adjustment device for a multi-wavelength lidar provided in an embodiment of this utility model.
[0031] The attached figures are labeled as follows:
[0032] 1-First reflecting assembly, 10-First receiving tube, 100-First through hole, 11-First rotating unit, 110-First motor, 111-First bevel gear, 112-First support plate, 1120-First gear tooth, 113-First lens, 12-First upper lens barrel, 120-First transparent window, 121-First receiving position, 13-First lower lens barrel, 130-First ball bearing, 14-First reflector, 15-Second condensing lens, 2-Second reflecting assembly, 20-Second receiving tube, 200-Second through hole, 21-Second rotating unit, 210-Second motor, 211-Second bevel gear, 21 2-Second carrier plate, 2120-Second gear tooth, 213-Second lens, 22-Second upper lens barrel, 220-Second transparent window, 221-Second receiving position, 23-Second lower lens barrel, 230-Second ball bearing, 24-First filter, 3-Condensing assembly, 30-First condensing lens, 31-Fixed lens barrel, 310-Adjusting component, 32-Adjusting lens frame, 4-Signal transceiver assembly, 40-Fixed base, 400-Adjusting through hole, 41-Signal unit, 410-Light emitter, 411-Light receiver, 42-Fixed base plate, 43-First narrowband filter array, 44-Second narrowband filter array. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in 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 utility model and are not intended to limit the present utility model.
[0034] Unless the context clearly requires otherwise, throughout the description and the claims, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers. In description of embodiments, the terms "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a specific example," or "some examples," and the like, are not necessarily referring to the same embodiment or the same example, but instead can describe different embodiments or examples, some of which can be mutually exclusive, some can be incorporated into other embodiments or examples, and some can be utilized to develop yet further embodiments or examples. Furthermore, these terms can be used throughout the present disclosure to describe various embodiments. However, you should not assume that these terms always designate the same embodiment or example. The terms "first," "second," and the like, do not denote any order, quantity, combination, or importance, but rather are used to identify one element from another. Therefore, these terms are used herein and in the description of the embodiments merely to distinguish one element from another.
[0035] In the description of the present utility model, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.
[0036] In the description of the present utility model, the terms "first", "second" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "multiple" is two or more. In addition, for example, in the description, the same type of nouns can also be described as two independent individuals by adding "A", "B" at the end, in which case the features limited by "A", "B" are only used for the purpose of distinguishing the description of the same type of individuals, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
[0037] In describing some embodiments, the terms "coupled," "coupled," and "connected," and their derivative expressions, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. Similarly, the term "coupled" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact. However, the terms "connected" or "coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other, such as "optical coupling" or "wireless connection." The embodiments disclosed herein are not necessarily limited to the scope of this invention.
[0038] In the description of this utility model, the expression "A and / or B" (where A and B are used to formally represent specific features) will be involved. The corresponding expression includes the following three combinations: only A, only B, and a combination of A and B.
[0039] As used in this invention, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the specified value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the specified quantity (i.e., the limitations of the measurement system).
[0040] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0041] Example 1:
[0042] Embodiment 1 of this utility model provides an optical lens adjustment device for a multi-wavelength lidar, such as... Figure 1 As shown, it includes: a first reflective component 1, a second reflective component 2, a focusing component 3, and a signal transceiver component 4; the focusing component 3 is fixedly disposed inside the signal transceiver component 4, the second reflective component 2 is nested above the signal transceiver component 4, and the first reflective component 1 is nested above the second reflective component 2; during use, the signal transceiver component 4 emits detection signal light of different wavelengths, which is transmitted through the focusing component 3 to the first reflective component 1 and the second reflective component 2. The first reflective component 1 and the second reflective component 2 reflect the detection signal light onto the external object to be detected. The detection signal light is reflected on the object to be detected to form a return signal light. The first reflective component 1 and the second reflective component 2 receive the return signal light and reflect it back to the focusing component 3. The focusing component 3 converges the return signal light and transmits it to the signal transceiver component 4. The signal transceiver component 4 analyzes the return signal light to obtain external environmental information.
[0043] The first receiving cylinder 10 is fixedly arranged on the first rotating unit 11, and the first rotating unit 11 drives the first receiving cylinder 10 to rotate by 360 degrees; the second receiving cylinder 20 is fixedly arranged on the second rotating unit 21, and the second rotating unit 21 drives the second receiving cylinder 20 to rotate by 360 degrees, wherein the first reflecting mirror 14 is arranged in the first receiving cylinder 10, and the first filter 24 is arranged in the second receiving cylinder 20.
[0044] The first reflecting assembly 1 and the second reflecting assembly 2 are stacked to form a double receiving and emitting port, the first rotating unit 11 is arranged in the first reflecting assembly 1 to drive the first receiving cylinder 10 to rotate, the second rotating unit 21 is arranged in the second reflecting assembly 2 to drive the second receiving cylinder 20 to rotate, the laser radar is beneficial to multi-angle detection in a complex environment, the detection range is wider by using two reflecting assemblies, and the detection range and the detection efficiency are effectively improved.
[0045] For the first reflecting assembly 1, as shown in Figure 2a The first reflecting assembly 1 further includes a first upper mirror cylinder 12 and a first lower mirror cylinder 13, the first lower mirror cylinder 13 is nested above the second reflecting assembly 2, and the first rotating unit 11 is rotationally connected with an upper surface of the first lower mirror cylinder 13; the first reflecting mirror 14 is fixedly arranged in the first receiving cylinder 10 at an angle of 45 degrees, the first upper mirror cylinder 12 is arranged above the first lower mirror cylinder 13 and is fixedly connected with the first lower mirror cylinder 13, and the first receiving cylinder 10 is fixedly arranged above the first rotating unit 11. In the above scheme, the signal transceiver assembly 4 emits detection signal light of different wavelengths, assuming that the signal transceiver assembly 4 can emit detection light signals of λ1, λ2, λ3, …, λ n Since the first reflecting mirror 14 is located at the uppermost position, the first reflecting mirror 14 can reflect detection light signals of full wavelengths of λ1, λ2, λ3, …, λ n In order to avoid that the first upper mirror cylinder 12 blocks the light path, the first upper mirror cylinder 12 is provided with a first transparent window 120, the first transparent window 120 is embedded on the first upper mirror cylinder 12, the first receiving cylinder 10 is provided with a first through hole 100, and the diameter of the first through hole 100 is greater than or equal to the height of the first transparent window 120. When the first receiving cylinder 10 is driven to rotate by the first rotating unit 11, the first reflecting mirror 14 in the first receiving cylinder 10 can reflect the detection signal light by 360 degrees, and the returned signal light can be received.
[0046] For the first rotating unit 11, as shown in Figure 2a and Figure 2b the lower surface of the first upper lens barrel 12 is provided with a first accommodating position 121 for accommodating the first rotating unit 11, the first rotating unit 11 comprising a first motor 110, a first bevel gear 111, a first bearing disc 112 and a first lens 113, the motor shaft of the first motor 110 being fixedly connected with the first bevel gear 111, the edge of the first bearing disc 112 being provided with first gear teeth 1120 which are engaged with the first bevel gear 111, the first lens 113 being arranged on the upper surface of the first bearing disc 112 and being fixedly connected with the first bearing disc 112; and, as shown in Figure 3 the first bearing disc 112 is provided with first balls 130 between the first bearing disc 112 and the first lower lens barrel 13, the first balls 130 being used to ensure smooth rotation between the first bearing disc 112 and the first lower lens barrel 13.
[0047] In actual use, the first motor 110 drives the first bevel gear 111 to rotate, and the first bevel gear 111 drives the first bearing disc 112 to rotate around the shaft center.
[0048] For the second reflecting assembly 2, as shown in Figure 2c the second reflecting assembly 2 comprises a second upper lens barrel 22 and a second lower lens barrel 23, the first reflecting assembly 1 being nested above the second upper lens barrel 22, and the second lower lens barrel 23 being nested above the signal transceiver assembly 4; the second rotating unit 21 is rotationally connected with the upper surface of the second lower lens barrel 23, the first filter 24 being fixedly arranged in the second receiving barrel 20 at an angle of 45 degrees, the second upper lens barrel 22 being arranged above the second lower lens barrel 23 and being fixedly connected with the second lower lens barrel 23, and the second receiving barrel 20 being fixedly arranged above the second rotating unit 21. In the above-mentioned scheme, it is mentioned that the signal transceiver assembly 4 can emit probe light signals of λ1, λ2, λ3, …, λ n Since the first reflector 14 is located at the uppermost position, the first reflector 14 can allow λ1, λ2, λ3, …, λ nThe first filter 24 can allow the reflection of part of the wavelengths of light, and the transmission of the other part of the wavelengths of light, for example, if the signal transceiver assembly 4 can emit probe light signals of λ1, λ2, …, λ6, the first filter 24 can allow the reflection of the probe light signals of λ1, λ2, λ3, and the transmission of the other wavelengths of light signals, so as to be reflected by the first mirror 14. In order to avoid the blocking of the light path by the second upper lens barrel 22, the second upper lens barrel 22 is provided with a second transparent window 220 embedded on the second upper lens barrel 22, and the second receiving barrel 20 is provided with a second through hole 200, the diameter of the second through hole 200 is greater than or equal to the height of the second transparent window 220. So that when the second receiving barrel 20 is driven to rotate by the second rotating unit 21, the first filter 24 in the second receiving barrel 20 can reflect the probe signal light by 360 degrees, and receive the return signal light.
[0049] For the second rotating unit 21, the lower surface of the second upper lens barrel 22 is provided with a second accommodating position 221 for accommodating the second rotating unit 21, the second rotating unit 21 comprises a second motor 210, a second bevel gear 211, a second bearing disc 212 and a second lens 213, the motor shaft of the second motor 210 is fixedly connected with the second bevel gear 211, the edge of the second bearing disc 212 is provided with a second gear tooth 2120, the second gear tooth 2120 is engaged with the second bevel gear 211, the second lens 213 is arranged on the upper surface of the second bearing disc 212 and is fixedly connected with the second bearing disc 212; and as shown in Figure 4 The second bearing disc 212 and the second lower lens barrel 23 are provided with a second ball 230 therebetween, the second ball 230 is used for ensuring the smooth rotation between the second bearing disc 212 and the second lower lens barrel 23.
[0050] In the embodiment of the utility model, only two reflection assemblies, the first reflection assembly 1 and the second reflection assembly 2, are arranged in the device, in actual application scenarios, multiple reflection assemblies can be arranged according to actual detection requirements, so as to meet the scene requirements of multi-wavelength detection of the laser radar.
[0051] For the light condensing assembly 3, referring to Figure 2cAs shown, the light collecting assembly 3 comprises a first light collecting lens 30, a fixed lens barrel 31 and an adjusting lens frame 32, the fixed lens barrel 31 is embedded in the signal transceiver assembly 4, the adjusting lens frame 32 is arranged in the fixed lens barrel 31, and the first light collecting lens 30 is fixedly arranged in the adjusting lens frame 32. After long-term use of the device, the position of the first light collecting lens 30 may be offset due to the movement of the overall laser radar, in order to ensure that the first light collecting lens 30 can accurately converge the light signal, the side wall of the fixed lens barrel 31 is provided with two adjusting pieces 310, the two adjusting pieces 310 are oppositely arranged, the adjusting piece 310 abuts against the adjusting lens frame 32 through the side wall of the fixed lens barrel 31, and the adjusting piece 310 is used for adjusting the position of the adjusting lens frame 32. Thus, the accuracy of the first light collecting lens 30 can be adjusted in the subsequent use process; wherein the focal point of the first light collecting lens 30 falls on the first optical filter 24.
[0052] Because the distance between the first reflecting assembly 1 and the first light collecting lens 30 is far, the probe signal light may not be directly converged on the first reflector 14 after passing through the first light collecting lens 30, especially in the case of stacking multiple reflecting assemblies, the problem is more obvious, therefore, in the preferred scheme, as shown in the figure, Figure 5 A second light collecting lens 15 can be further arranged in the first reflecting assembly 1, so that the probe light signal can be converged for the second time at the second light collecting lens 15 after passing through the first light collecting lens 30, so that the probe light signal can be converged on the first reflector 14 for reflection; wherein the focal point of the second light collecting lens 15 falls on the first reflector 14.
[0053] For the signal transceiver assembly 4, refer to Figure 2c As shown, the signal transceiver assembly 4 comprises a fixed base 40, a signal unit 41 and a fixed bottom plate 42, the fixed lens barrel 31 is embedded in the inside of the fixed base 40, the bottom of the fixed base 40 is fixedly connected with the fixed bottom plate 42, and the signal unit 41 is fixedly arranged on the bottom plate; because the fixed lens barrel 31 is arranged in the inside of the fixed base 40, and the two sides of the fixed lens barrel 31 are provided with adjusting pieces 310, therefore, the side wall of the fixed base 40 is provided with two adjusting through holes 400, the adjusting through holes 400 are correspondingly arranged with the adjusting pieces 310, and the adjusting through holes 400 facilitate the adjusting operation of the adjusting pieces 310. In the above scheme, it is mentioned that the signal transceiver assembly 4 emits probe signal light of different wavelengths, such as Figure 6As shown, the inside of the signal unit 41 is provided with a plurality of light emitters 410 for sending light signals to the outside and a plurality of light receivers 411 for receiving light signals from the outside to identify information. The plurality of light emitters 410 emit light signals of different wavelengths, and the plurality of light receivers 411 are used to receive light signals of different wavelengths. Based on this, in the signal unit 41, in addition to the plurality of light emitters 410 and the plurality of light receivers 411, a first narrow-band filter array 43 and a second narrow-band filter array 44 are further included, the first narrow-band filter array 43 is arranged corresponding to the light emitters 410, and the second narrow-band filter array 44 is arranged corresponding to the light receivers 411. The first narrow-band filter array 43 and the second narrow-band filter array 44 include a plurality of filter units (not marked in the figure), each filter unit corresponds to one light emitter 410 or one light receiver 411, and the filter unit reflects the light signal that the corresponding light emitter 410 or light receiver 411 can emit or receive, and makes the rest of the light of different wavelengths pass through.
[0054] In the above scheme, the central positions of the first reflector 14, the first filter 24, the first condenser lens 30 and the signal unit 41 are located on the same straight line. If more filters and condenser lenses are arranged, the central positions of the above structures are the same.
[0055] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An optical-mirror adjustment device for a multi-wavelength lidar, characterized by The utility model relates to a signal receiving device, including: First reflection component (1), second reflection component (2), light collection component (3) and signal transceiver component (4), the light collection component (3) is fixedly arranged in the inside of signal transceiver component (4), the second reflection component (2) is nested in the top of signal transceiver component (4), the first reflection component (1) is nested in the top of second reflection component (2), The first reflection component (1) is provided with first receiving cylinder (10) and first rotation unit (11), first receiving cylinder (10) is fixedly arranged on first rotation unit (11), first rotation unit (11) drives first receiving cylinder (10) 360 degrees rotation, second reflection component (2) is provided with second receiving cylinder (20) and second rotation unit (21), second receiving cylinder (20) is fixedly arranged on second rotation unit (21), second rotation unit (21) drives second receiving cylinder (20) 360 degrees rotation, wherein, first receiving cylinder (10) is provided with first reflector (14), and first receiving cylinder (20) is provided with first optical filter (24).
2. The optical-mirror adjustment device for a multiwavelength lidar according to claim 1, characterized by The first reflection component (1) further includes first upper mirror barrel (12) and first lower mirror barrel (13), the first lower mirror barrel (13) is nested in the top of the second reflection component (2), and the first rotation unit (11) is rotatably connected to the upper surface of the first lower mirror barrel (13); the first reflector (14) is fixed in the first receiving cylinder (10) at an angle of 45 degrees, the first upper mirror barrel (12) is arranged above the first lower mirror barrel (13) and fixedly connected to the first lower mirror barrel (13), and the first receiving cylinder (10) is fixedly arranged above the first rotation unit (11).
3. The optical-mirror adjustment device for a multiwavelength lidar according to claim 2, characterized by The first upper mirror barrel (12) is provided with a first transparent window (120), and the first transparent window (120) is embedded in the first upper mirror barrel (12); the first receiving cylinder (10) is provided with a first through hole (100), and the diameter of the first through hole (100) is greater than or equal to the height of the first transparent window (120).
4. The optical-mirror adjustment device for a multiwavelength lidar according to claim 3, characterized by The lower surface of the first upper mirror barrel (12) is provided with a first accommodating position (121) for accommodating the first rotation unit (11), the first rotation unit (11) includes a first motor (110), a first bevel gear (111), a first bearing disc (112), and a first lens (113), the motor shaft of the first motor (110) is fixedly connected to the first bevel gear (111), the edge of the first bearing disc (112) is provided with a first gear tooth (1120), the first gear tooth (1120) is engaged with the first bevel gear (111), and the first lens (113) is arranged on the upper surface of the first bearing disc (112) and fixedly connected to the first bearing disc (112); The first bearing disc (112) is provided with a first ball bearing (130) between the first bearing disc (112) and the first lower lens barrel (13), which is used to ensure smooth rotation between the first bearing disc (112) and the first lower lens barrel (13).
5. The optical-mirror adjustment device for a multiwavelength lidar according to claim 1, wherein The second reflection assembly (2) comprises a second upper lens barrel (22) and a second lower lens barrel (23), the first reflection assembly (1) is nested above the second upper lens barrel (22), and the second lower lens barrel (23) is nested above the signal transceiver assembly (4); the second rotating unit (21) is rotationally connected to the upper surface of the second lower lens barrel (23), the first filter (24) is fixed at an angle of 45 degrees in the second receiving barrel (20), the second upper lens barrel (22) is arranged above the second lower lens barrel (23) and is fixedly connected with the second lower lens barrel (23), and the second receiving barrel (20) is fixedly arranged above the second rotating unit (21).
6. The optical-mirror adjustment device for a multiwavelength lidar according to claim 5, characterized by The second upper lens barrel (22) is provided with a second transparent window (220), the second transparent window (220) is embedded on the second upper lens barrel (22), and the second receiving barrel (20) is provided with a second through hole (200), the diameter of the second through hole (200) is greater than or equal to the height of the second transparent window (220).
7. The optical-mirror adjustment device of a multiwavelength lidar according to claim 6, characterized in that, The lower surface of the second upper lens barrel (22) is provided with a second accommodating position (221) for accommodating the second rotating unit (21), the second rotating unit (21) comprises a second motor (210), a second bevel gear (211), a second bearing disc (212) and a second lens (213), the motor shaft of the second motor (210) is fixedly connected with the second bevel gear (211), the edge of the second bearing disc (212) is provided with a second gear tooth (2120), the second gear tooth (2120) is engaged with the second bevel gear (211), and the second lens (213) is arranged on the upper surface of the second bearing disc (212) and is fixedly connected with the second bearing disc (212). The second bearing disc (212) is provided with a second ball bearing (230) between the second bearing disc (212) and the second lower lens barrel (23), which is used to ensure smooth rotation between the second bearing disc (212) and the second lower lens barrel (23).
8. The optical-mirror adjustment device for a multiwavelength lidar according to claim 1, wherein The light condensing assembly (3) comprises a first condensing lens (30), a fixed lens barrel (31) and an adjusting lens frame (32), the fixed lens barrel (31) is embedded in the signal transceiver assembly (4), the adjusting lens frame (32) is arranged in the fixed lens barrel (31), and the first condensing lens (30) is fixedly arranged in the adjusting lens frame (32). The side wall of the fixed lens barrel (31) is provided with two adjusting members (310), the two adjusting members (310) are oppositely arranged, the adjusting members (310) abut against the adjusting lens frame (32) through the side wall of the fixed lens barrel (31), and the adjusting members (310) are used for adjusting the position of the adjusting lens frame (32).
9. The optical-mirror adjustment device of a multi-wavelength lidar according to claim 8, characterized in that, The signal transceiver assembly (4) comprises a fixed base (40), a signal unit (41) and a fixed bottom plate (42), the fixed lens barrel (31) is embedded in the inside of the fixed base (40), the bottom of the fixed base (40) is fixedly connected with the fixed bottom plate (42), and the signal unit (41) is fixedly arranged on the bottom plate; The side wall of the fixed base (40) is provided with two adjusting through holes (400), the adjusting through holes (400) are correspondingly arranged with the adjusting pieces (310), and the adjusting through holes (400) facilitate the adjusting operation of the adjusting pieces (310).
10. The optical-mirror adjustment device for a multiwavelength lidar according to claim 9, wherein The inside of the signal unit (41) is provided with a plurality of light emitters (410) and a plurality of light receivers (411), the light emitters (410) are used for sending light signals to the outside, and the light receivers (411) are used for receiving light signals outside to identify information.