Photoelectric probe suitable for laser radar

Abstract

The utility model relates to a photoelectric probe suitable for a laser radar, which belongs to the technical field of laser radar devices, and comprises a photoelectric conversion T / R assembly and a signal processing unit, the photoelectric conversion T / R assembly is used for converting an input laser signal into an electric signal and converting the electric signal into an output laser signal; the signal processing unit is used for processing the real-time intensity of an electric signal, the signal processing unit is in butt joint with the photoelectric conversion T / R assembly, an input laser signal is converted into an electric signal after passing through the photoelectric conversion T / R assembly, and the electric signal is processed by the signal processing unit and then converted into an output laser signal through the photoelectric conversion T / R assembly; the beneficial effects of the utility model are that the photoelectric probe of the laser radar converts the input laser signal with a relatively high wavelength into the output laser signal with a relatively low wavelength.

Description

Technical Field

[0001] The utility model belongs to the technical field of lidar devices, and particularly relates to an optoelectronic probe applicable to lidar. Background Art

[0002] With the rapid development of laser technology and laser devices, in the field of laser technology, it is relatively common in technologies applied to lidar, laser ranging, and laser simulation.

[0003] Laser echo can simulate the transmission process of laser echo, provide virtual targets at a long distance, and achieve the index detection of large measurement ranges for virtual targets at a long distance.

[0004] The optoelectronic probe of lidar can realize the collection of laser signals of lidar and the return of echoes. Users can implement the optoelectronic probe simulator of lidar for practical scenarios such as lidar measurement and lidar detection. Generally, ToF (Time of Flight) or FMCW type lidar is used. By replacing the echo light source, it can be applied to simulate the conversion of laser signals with a wavelength of 1550nm into laser signals with a wavelength of 905nm to achieve the detection of targets at different distances. Summary of the Utility Model

[0005] The utility model provides an optoelectronic probe applicable to lidar, which is used to solve the technical problem of how to convert the input laser signal with a higher wavelength (1550nm wavelength) into an output laser signal with a lower wavelength (905nm wavelength) through the optoelectronic probe of lidar. By using the T collimator and R collimator with different colors or adjusting the electrical signal intensity of the signal processing unit, the optoelectronic probe of lidar converts the input laser signal with a wavelength of 1550nm into an output laser signal with a wavelength of 905nm.

[0006] To achieve the above purpose, the utility model is realized through the following technical solutions:

[0007] An optoelectronic probe applicable to lidar includes:

[0008] An optoelectronic conversion T / R component for converting the input laser signal into an electrical signal and converting the electrical signal into an output laser signal;

[0009] A signal processing unit for real-time intensity processing of the electrical signal, and the signal processing unit is connected to the optoelectronic conversion T / R component;

[0010] The input laser signal is converted into an electrical signal after passing through the optoelectronic conversion T / R component. After the electrical signal is processed by the signal processing unit, it is then converted into an output laser signal through the optoelectronic conversion T / R component.

[0011] Optionally, the optoelectronic conversion T / R component has an optoelectronic conversion T component and an optoelectronic conversion R component;

[0012] Both ends of the optoelectronic conversion R component are respectively docked with the first optical lens and the signal processing unit. The optoelectronic conversion R component receives the laser signal input by the first optical lens. The optoelectronic conversion R component is used to collimate the input laser signal into a collimated input laser signal, and the collimated input laser signal is converted into an electrical signal and then sent to the signal processing unit.

[0013] Optionally, both ends of the optoelectronic conversion T component are respectively docked with the second optical lens and the signal processing unit. The optoelectronic conversion T component receives the electrical signal output by the signal processing unit. After the output electrical signal is converted into an output laser signal, the optoelectronic conversion T component is used to collimate the output laser signal into a collimated output laser signal, and the collimated output laser signal is sent to the second optical lens.

[0014] Optionally, the optoelectronic conversion R component has an R collimator, and the R collimator is used to collimate the input laser signal into a collimated input laser signal. The optoelectronic conversion T component has a T collimator, and the T collimator is used to collimate the output laser signal into a collimated output laser signal.

[0015] Optionally, the R collimator is located between the first optical lens and the detector, and the T collimator is located between the second optical lens and the laser.

[0016] Optionally, the R collimators are vertically arranged within the optoelectronic conversion R component, and the T collimators are vertically arranged within the optoelectronic conversion T component.

[0017] Optionally, the number of both the R collimators and the T collimators is eight, and the diameter of each R collimator and T collimator ranges from 0.69 mm to 0.71 mm.

[0018] Optionally, a lidar transmitter is docked at one end of the first optical lens away from the optoelectronic conversion T / R component.

[0019] Optionally, a lidar receiver is docked at one end of the second optical lens away from the optoelectronic conversion T / R component.

[0020] Advantages of the present utility model:

[0021] In this utility model, a laser signal input by a lidar transmitter passes through a first optical lens and an R collimator, and then the input laser signal is converted into an electrical signal by a detector. The electrical signal is processed by a signal processing unit, which then emits an electrical signal. The electrical signal is converted into an output laser signal by a laser, and the output laser signal passes through a T collimator and then through a second optical lens to reach the lidar receiver. This utility model uses T collimators and R collimators with different colors or adjusts the electrical signal intensity of the signal processing unit, enabling the optoelectronic probe of the lidar to convert the input laser signal with a wavelength of 1550 nm into an output laser signal with a wavelength of 905 nm. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of this utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0023] Figure 1 System structure diagram of an implementation manner of this utility model;

[0024] Figure 2 System structure diagram of another implementation manner of this utility model;

[0025] Figure 3 Cross-sectional structure diagram of the collimator of this utility model;

[0026] Figure 4 Optical path simulation diagram of this utility model. Detailed Embodiment

[0027] The following will describe the embodiments of this application in detail with reference to the drawings.

[0028] Embodiment 1

[0029] As Figure 1 shown, this embodiment provides an optoelectronic probe applicable to a lidar, including: a lidar transmitter, a first optical lens, an optoelectronic conversion T / R component, a signal processing unit, a second optical lens, and a lidar receiver;

[0030] The optoelectronic conversion T / R component is used to convert the input laser signal into an electrical signal and the electrical signal into an output laser signal;

[0031] The signal processing unit is used for real-time intensity processing of the electrical signal, and the signal processing unit is connected to the optoelectronic conversion T / R component;

[0032] The lidar transmitter emits the input laser signal. The input laser signal is transformed into an electrical signal after passing through the first optical lens and the optoelectronic conversion T / R module. The electrical signal is processed by the signal processing unit, and then transformed into the output laser signal through the optoelectronic conversion T / R module. The output laser signal reaches the lidar receiver through the second optical lens.

[0033] Both ends of the optoelectronic conversion R module are respectively docked with the first optical lens and the signal processing unit. The optoelectronic conversion R module receives the laser signal input by the first optical lens. The optoelectronic conversion R module is used to turn the input laser signal into a collimated input laser signal. The collimated input laser signal is transformed into an electrical signal and then sent to the signal processing unit;

[0034] Both ends of the optoelectronic conversion T module are respectively docked with the second optical lens and the signal processing unit. The optoelectronic conversion T module receives the electrical signal output by the signal processing unit. After the output electrical signal is transformed into the output laser signal, the optoelectronic conversion T module is used to turn the output laser signal into a collimated output laser signal. The collimated output laser signal is sent to the second optical lens.

[0035] Embodiment 2

[0036] Based on Embodiment 1, as Figure 2 shown, the optoelectronic conversion T / R module has an optoelectronic conversion T module and an optoelectronic conversion R module. The optoelectronic conversion R module has an R collimator and a detector. The R collimator is located between the first optical lens and the detector. The R collimator is used to turn the input laser signal into a collimated input laser signal. The detector converts the collimated input laser signal into an electrical signal;

[0037] The optoelectronic conversion T module has a T collimator and a laser. The T collimator is located between the second optical lens and the laser. The laser converts the electrical signal into the output laser signal. The T collimator is used to turn the output laser signal into a collimated output laser signal.

[0038] In this embodiment compared with Embodiment 1, the lidar transmitter emits the input laser signal. After the input laser signal passes through the first optical lens and the R collimator, the input laser signal is transformed into an electrical signal by the detector. The electrical signal is processed by the signal processing unit. The signal processing unit then sends out an electrical signal. The electrical signal is transformed into the output laser signal by the laser. The output laser signal passes through the T collimator and then reaches the lidar receiver through the second optical lens.

[0039] Embodiment 3

[0040] Based on Embodiment 2, as Figure 3 shown, the R collimator ( Figure 3The black dots (in []) are arranged vertically within the optoelectronic conversion R component, and the T collimator ( Figure 3 the gray dots in []) are arranged vertically within the optoelectronic conversion T component.

[0041] Both the number of R collimators and T collimators is eight, and the diameter of each R collimator and T collimator ranges from 0.69 mm to 0.71 mm.

[0042] The lidar transmitter emits the input laser signal, and the input laser signal enters the eight R collimators through the first optical lens.

[0043] The signal processing unit emits an electrical signal, the electrical signal is converted into an output laser signal through the laser, and the output laser signal enters the eight T collimators.

[0044] Embodiment 4

[0045] Based on Embodiment 3, as Figure 4 shown, it is a simulation of the optical path of the input laser signal. That is to say, the first optical lens is an optical simulation element or optical simulation tool, and the optical path simulation model in the first optical lens is designed according to the optical path. Specifically, Figure 4 The lidar transmitter at the left end emits the input laser signal, and the input laser signal passes through Figure 4 the middle first optical lens, and the input laser signals are all converged on Figure 4 the respective R collimators at the right end.

[0046] Based on Figure 4 , similarly, the second optical lens is also an optical simulation element or optical simulation tool. The output laser signal coming out of the T collimator is scattered onto the second optical lens, and through the action of the second optical lens, the output laser signal is emitted to the lidar receiver. The output laser signal from the T collimator to the lidar receiver uses Figure 4 the optical path simulation principle, only the optical path simulation path is Figure 4 the reverse path of the optical path.

[0047] Embodiment 5

[0048] Based on all the above embodiments, the input laser signal of the present utility model is input into the optoelectronic conversion T / R component in the form of pulses to be converted into pulse electrical signals. The signal processing unit processes the pulse electrical signals, the signal processing unit emits the processed pulse electrical signals, and the processed pulse electrical signals enter the optoelectronic conversion T / R component to be converted into pulse optical signals. The output laser signal is output from the optoelectronic conversion T / R component in the form of pulses.

[0049] The present utility model can adopt that the T collimator and the R collimator have different colors respectively. Since the T collimator and the R collimator can control the wavelength range themselves, and the T collimator and the R collimator adopt different colors respectively, the optoelectronic probe of the lidar converts the input laser signal with a wavelength of 1550 nm into an output laser signal with a wavelength of 905 nm.

[0050] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope recorded by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. An optoelectronic probe applicable to lidar, characterized in that, Including: An optoelectronic conversion T / R component for converting an input laser signal into an electrical signal and an electrical signal into an output laser signal; A signal processing unit for real-time intensity processing of the electrical signal, and the signal processing unit is connected to the optoelectronic conversion T / R component; The input laser signal is converted into an electrical signal after passing through the optoelectronic conversion T / R component. After the electrical signal is processed by the signal processing unit, it is then converted into an output laser signal through the optoelectronic conversion T / R component.

2. The optoelectronic probe applicable to a lidar according to claim 1, wherein The optoelectronic conversion T / R component has an optoelectronic conversion T component and an optoelectronic conversion R component; Both ends of the optoelectronic conversion R component are respectively connected to the first optical lens and the signal processing unit. The optoelectronic conversion R component receives the laser signal input by the first optical lens. The optoelectronic conversion R component is used to convert the input laser signal into a collimated input laser signal. The collimated input laser signal is converted into an electrical signal and then sent to the signal processing unit.

3. The optoelectronic probe applicable to lidar according to claim 2, characterized in that Both ends of the optoelectronic conversion T component are respectively connected to the second optical lens and the signal processing unit. The optoelectronic conversion T component receives the electrical signal output by the signal processing unit. After the output electrical signal is converted into an output laser signal, the optoelectronic conversion T component is used to convert the output laser signal into a collimated output laser signal. The collimated output laser signal is sent to the second optical lens.

4. The optoelectronic probe applicable to a lidar according to claim 2, characterized in that, The optoelectronic conversion R component has an R collimator, and the R collimator is used to convert the input laser signal into a collimated input laser signal. The optoelectronic conversion T component has a T collimator, and the T collimator is used to convert the output laser signal into a collimated output laser signal.

5. The optoelectronic probe applicable to lidar according to claim 4, characterized in that The R collimator is located between the first optical lens and the detector, and the T collimator is located between the second optical lens and the laser.

6. The optoelectronic probe applicable to lidar according to claim 4, wherein, The R collimators are vertically arranged within the optoelectronic conversion R component, and the T collimators are vertically arranged within the optoelectronic conversion T component.

7. An optoelectronic probe applicable to lidar according to claim 4, characterized in that, The number of both the R collimators and the T collimators is eight, and the diameter of each R collimator and T collimator ranges from 0.69 mm to 0.71 mm.

8. The optoelectronic probe applicable to a lidar according to claim 1, characterized in that, A lidar transmitter is connected to one end of the first optical lens away from the optoelectronic conversion T / R component.

9. An optoelectronic probe applicable to a lidar according to claim 1, characterized in that, A lidar receiver is connected to one end of the second optical lens away from the optoelectronic conversion T / R component.

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