CN207008051U - A kind of lidar transmit-receive antenna based on optical phase arrays - Google Patents
A kind of lidar transmit-receive antenna based on optical phase arrays Download PDFInfo
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Abstract
This case discloses a kind of lidar transmit-receive antenna based on optical phase arrays, including the range finder module based on single-point transceiver, signal processing module, central controller and laser driven module, laser driven module and signal processing module are connected with central controller；Range finder module includes single transmitter unit and single-geophone receiver unit, laser driven module driving single transmitter unit launches Ray Of Light, and control the optical signal launch direction of the light beam, single-geophone receiver unit receives the optical signal of detected thing reflection and sent and handled to signal processing module, calculates the displacement of detection thing.Single transmitter unit and single-geophone receiver unit can be that transmissive optical phased array can also be reflection-type optical phased array, the central point for launching light and reception light can be in same optical axis, can also be in two different optical axises, so that image scanning solid state is realized in the dual-mode antenna design of laser radar system, there is low cost, high s/n ratio.
Description
Technical field
The automatically controlled scan-type solid-state laser radar of high performance-price ratio is the utility model is related to, more particularly to one kind is based on optics phase
The lidar transmit-receive antenna of bit array.
Background technology
Laser radar（LIDAR）Technology, begin to apply early in the 1970s, just started to be mainly used in naval vessel to enter a port
When avoidance and anticollision.The eighties have been arrived, as the optics such as photodiode, CCD, CMOS is slowly ripe, laser thunder
Up to being accurately positioned when starting to recover satellites for space shuttle.The power of actuation techniques development is often the pressure of war.In sea
In the war of gulf, laser radar has been commonly used for helicopter elevating control and helicopter night flying guiding on ship deck.
Hughes Electronics of the U.S., Schwatz companies, Sparate companies, Luo Leier system house, THO etc. develop one after another
Go out laser infrared radar imaging system, for fields such as battlefield investigation, low-latitude flying control, active laser guidances.With semiconductor light
The further development of electrical part, component cost is slowly reduced, and performance is constantly lifted, so as to enter for laser radar technique
Civil area lays the foundation.Laser radar is applied to machine vision, automobile assistant driving, electronic game, medical treatment at leisure
The fields such as health, amusement and recreation, smart home.The core of laser radar technique is laser ranging, but develops into today, laser
This concept of radar is far beyond " ranging " this category.
Modern radar technology, it is exactly generally the eyes that mechanized manufacturing industry is provided by mankind's exploration three-dimensional world, most often
That sees has microwave radar, ultrasonic radar etc..And laser radar is as a kind of optical detection means, because the high accuracy of laser,
Many advantages, such as directionality, monochromaticjty, coherence, unprecedented effect just is played in many fields from birth,
Application field includes industry, agricultural, medical science, national defence etc..And today is developed into, many popular type consumer electronicses also extensive uses
The Kinect three-dimension sensors of Microsoft in laser radar technique, such as Xbox, it is the flight time inside laser radar
（ToF）Technology, the 3D sensing modules RealSense that Intel is released then are based on structured light technique.In addition, laser radar is also
The human-computer interaction being used in electronic game, the action capture in amusement and recreation electronic product, the optics phase in medical treatment ＆ health field
Dry fault imaging (optical coherence tomography, OCT), indoor positioning, three-dimensional imaging and the people of smart home
Machine interaction etc..
Laser radar is essential from single-point ranging to two dimension or 3-D imaging system transition, optical scanning system.Such as
It is upper described, at present on based on mechanical scanning, including optics shake mirror, special coaxial tilting mirror etc..Its feature is all
Relatively cumbersome to be difficult to integrated and cost of manufacture not low, extremely difficult for the application requirement of most of consumer level.Light beam
Non-mechanical scanning advantage it is very more, one of distinguishing feature can exactly adjust scanning area and scanning element at random, make
Obtaining laser radar system can need to convert scanning area, dynamic regulation scanning density according to environment.
At present, integrated optical scanning system has two typical scenarios, and one of them is MEMS（MEMS）It is micro-
The automatically controlled scanning that mirror is realized, another is then optical phase arrays.The scanning system of MEMS micromirror solves a part of machinery
The shortcomings that formula scans, such as be difficult to integrated etc., but is still based on mechanical shock, sweep speed, stability etc. according to
Cannot so meet the needs of application.And optical phase arrays（optical phased array）It is then following important hair
Direction is opened up, has huge advantage in cost, integrated level etc., its principle is by the method for optical antenna array, adjusts light
Ripple transmitter, phase, reach the control light wave direction of the launch or adjust the purpose of hot spot emission mode.Its concept and microwave radar
Phased-array radar is similar, realizes the scanning without machinery.The laser radar based on optical phase arrays of main flow is based on integrated at present
Silicon photonics, dual-mode antenna unit have the characteristics that high integration, inexpensive, but integrated silicon substrate laser radar have plus
The shortcomings of work difficulty is big, coupling loss is big on piece, silicon substrate phase-modulator speed is slow.
Therefore, the prior art is defective, it is necessary to improve.
Utility model content
For weak point present in above-mentioned technology, the utility model provides a kind of inexpensive, low difficulty of processing, Gao Xing
The scanning type laser radar transmit-receive antenna of energy.
To achieve the above object, the utility model provides a kind of lidar transmit-receive antenna based on optical phase arrays,
Including the range finder module based on single-point transceiver, signal processing module, central controller and laser driven module, the laser drives
Dynamic model block and signal processing module are connected with the central controller；The range finder module includes single transmitter unit and is used for
The single-geophone receiver unit of the optical signal of detected thing reflection is received, the single transmitter unit includes the transmitter for producing optical signal
With the transmitting optical phase arrays chip of the optical phase for adjusting transmitting optical signal, the single-geophone receiver unit includes being used for
The reception optical phase arrays chip of the optical phase of the optical signal of the detected thing reflection of adjustment and the light for receiving transmitting light
Receiver is learned, the transmitter is connected with the laser driven module, and laser driven module driving transmitter launches light beam, institute
State optical receiver to be connected with the signal processing module, the optical signal that the signal processing module processing optical receiver is sent
Calculate and detect the distance of thing；The transmitting optical phase arrays chip and reception optical phase arrays chip with the center
Controller connects, the direction of the launch of the transmitting optical phase arrays chip controls transmitting light, the reception optical phase arrays
Chip controls receive the direction of the launch of light.
Wherein, the transmitting optical phase arrays chip and reception optical phase arrays chip are the core of resonance type structure
Piece, include the signal input unit with light scanning unit, optical antenna, automatically controlled phase modulation unit, feeding network and coupling
Unit, the signal input unit reception optical signal, and one control signal of generation are sent to described by the feeding network
Automatically controlled phase modulation unit, the optical phase of the automatically controlled phase modulation unit adjustment optical signal, the control of the coupling unit coupled phase
Signal is simultaneously output on the optical antenna；The optical phase arrays active region area of the transmitting optical phase arrays chip
More than 4 square millimeters, the optical phase arrays active region area for receiving optical phase arrays chip is more than 25 squares of millis
Rice.
Wherein, the single transmitter unit also includes being used to that the transmitting light collimating lenses of beam collimation, the hair will to be launched
Penetrate light collimating lenses designed for simple lens or poly-lens group design；The fast axle and slow axis of the transmitter transmitting light beam pass through respectively
Cross the transmitting light collimating lenses to be collimated, the emergent light of diverging is collimated into less parallel light, is coupled tovertically to the light
Learn in phased array chip, by the exit direction of the transmitting optical phase arrays chip adjustment light.
Wherein, the single-geophone receiver unit also includes the reception optical lens that combination is designed by simple lens or poly-lens group
Mirror, diameter range are 5 millimeters -40 millimeters, obtain optical signal of the larger clear aperature by reflection, detected thing is reflected
Optical signal is focused in optical receiver.
The beneficial effects of the utility model are：Compared with prior art, it is provided by the utility model to be based on optical phase battle array
The lidar transmit-receive antenna of row, including the range finder module based on single-point transceiver, signal processing module, central controller and swash
Optical drive module, the laser driven module and signal processing module are connected with the central controller；The range finder module
Including single transmitter unit and single-geophone receiver unit, it is a branch of that the laser driven module drives the single transmitter unit to launch
Light, and the optical signal launch direction of the light beam is controlled, the single-geophone receiver unit receives the optical signal of detected thing reflection simultaneously
Transmission is handled to the signal processing module, calculates the displacement of detection thing.Single transmitter unit and single-geophone receiver unit
Can be that transmissive optical phased array can also be reflection-type optical phased array, transmitting light and receive the central point of light can be with
, can also be in two different optical axises in same optical axis so that the dual-mode antenna design of laser radar system is implemented as sweeping
Solid state is retouched, there is low cost, high s/n ratio
The utility model is by combining traditional optical instrument and optical phase arrays, and dual-mode antenna realizes solid state, to micro-
The requirement of processing technology received substantially reduces.Moreover, transmitting and reception synchronous optical phased array of the utility model using light source
Design, avoid receiving terminal from receiving mode using wide-angle, keep the technical characteristic at laser radar narrow visual field angle so that radar is more
Strong light environment is adapted to, there is higher signal to noise ratio, stronger antijamming capability.The use of resonance type optical phase arrays can enter one
Step substitutes the function of narrow band pass filter, reaches higher filter effect.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model；
Fig. 2 is flow chart of the present utility model；
Fig. 3 is the control configuration diagram of optical phase arrays of the present utility model；
Fig. 4 is that the utility model is typically based on transmissive optical phased array systems structural representation；
Fig. 5 is system structure diagram of the utility model based on reflection-type optical phased array；
Fig. 6 is the utility model coaxial type system structure diagram.
Main element symbol description is as follows：
1st, transmitter 2, laser driven module
3rd, light collimating lenses 4, transmitting optical phase arrays chip are launched
5th, light wave valve Fig. 6, optical receiver are launched
7th, signal processing module 8, reception optical lens
9th, receive optical phase arrays chip 10, receive light lobe pattern
14th, aperture 15, speculum group
17th, range finder module 50, single transmitter unit
60th, single-geophone receiver unit 201, signal input unit
202nd, X-axis feeding network 203, Y-axis feeding network
204th, the automatically controlled phase modulation unit 205 of X-axis, the automatically controlled phase modulation unit of Y-axis
206th, X-axis connecting line 207, Y-axis connecting line
208th, coupling unit.
Embodiment
In order to more clearly state the utility model, the utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 and Fig. 4-Fig. 6 is referred to, compared to the situation of prior art, one kind provided by the utility model is based on optics
The lidar transmit-receive antenna of phased array, including the range finder module 17 based on single-point transceiver, signal processing module 7, center
Controller 20 and laser driven module 2, laser driven module 2 and signal processing module 7 are connected with central controller 20；Ranging
Module 17 carries out ranging using flight time telemetry to detection thing, including the single transmitter list of optical signal is produced as transmitting terminal
Member 50 and the single-geophone receiver unit 60 that the optical signal that detected thing reflects is received as receiving terminal, laser driven module 2 drive list
Point transmitter unit 50 launches Ray Of Light, and controls the optical signal launch direction of the light beam, and single-geophone receiver unit 60 receives quilt
The optical signal and transmission that detection thing reflects are handled to signal processing module 7, calculate the displacement of detection thing.
Transmitting optical phase arrays chip 4 in single transmitter unit 50 is single as transmitting scanning using optical phase arrays
Member, single-geophone receiver unit 60 receive quilt using the reception optical phase arrays chip 9 synchronous with transmitting optical phase arrays chip 4
The optical signal of detection thing reflection simultaneously forms reflection optical phase arrays so that single-geophone receiver unit 60 can keep narrow visual field angle special
Property, the high s/n ratio advantage of holding scanning type laser radar.
Further, single transmitter unit 50 includes being used for the transmitter 1 for launching optical signal, for controlling the hair of optical signal
The transmitting optical phase arrays chip 4 in direction and the transmitting light collimating lenses 3 for being collimated to optical signal are penetrated, refer to figure
2, flow chart of the present utility model, transmitter 1 launches light beam, produces optical signal, and transmitting light collimating lenses 3 enter to optical signal
Row collimation filtering, the emergent light of diverging is collimated into less parallel optically coupling to launching in optical phase arrays chip 4, in optics
Transmitting phasar is formed in scanning element phase adjusted is carried out to transmitting optical signal, the hair of the optical signal for controlling transmitting
Penetrate direction.Specifically, transmitter 1 is connected with laser driven module 2, and transmitting optical phase arrays chip 4 connects with central controller 7
Connect, by 7 automatically controlled modulation of central controller.Launch optical phase arrays chip 4 to adjust with electricity by the way of free space optical coupling
The mode of system controls phase delay, and the phased array active region area for launching light is more than 4mm^2.
Further, single-geophone receiver unit 60 includes receiving optical phase arrays chip 9, receives optical lens 8 and light
Receiver 6 is learned, the optical signal of detected thing reflection forms anti-when passing through the light scanning unit for receiving optical phase arrays chip 9
Optical phase arrays are penetrated, the phase of the optical signal of reflection is adjusted, control the reflection direction of the optical signal of reflection, and are connect
Optical phase arrays chip 9 is received to be connected with central controller 7, also by the way of free space optical coupling and electrical modulation mode
Phase delay is controlled, is realized synchronous with transmitting optical phase arrays chip 4.In order to increase the light of the detected thing of reception transmitting
The optical aperture of signal, receive the active region area of optical phase arrays chip 9 and be more than 25mm^2.Receiving optical lens 8 will be anti-
The optical signal penetrated is focused in optical receiver 6, and optical receiver 6 receives the optical signal of detected thing reflection, is transferred to signal
Processing module 7 is handled.
Further, light beam deflection of the present utility model controls the optical phase arrays by free space coupling（Also referred to as
Spatial light modulator）Realize, wherein, transmitting optical phase arrays chip 4 controls the optical phase arrays of transmitting light, receives optics
9 controls of phased array core receive the optical phase arrays of light.Specifically, as shown in figure 3, transmitting optical phase arrays chip 4
It is the chip of the resonance type structure with light scanning unit with reception optical phase arrays chip 9, is inputted including signal
Unit 201, optical antenna（It is not shown）, coupling unit 208, automatically controlled phase modulation unit：Including the automatically controlled phase modulation unit 204 of X-axis and Y-axis
Automatically controlled phase modulation unit 205, feeding network：Including X-axis feeding network 202 and Y-axis feeding network 203, launch optical phase arrays
The phase adjustment of chip 4 and the optical signal in reception optical phase arrays core 9 is all divided into X-axis and the phase of Y-axis independent control is adjusted
It is whole.Launch optical phase arrays chip 4 to launching the processing of optical signal and receiving optical phase arrays core 9 to reflected light signal
Processing procedure is consistent.Specially：Light scanning unit in signal input unit 201（It is not shown）Scanning receives the light wave of light beam
Signal, and a control signal is produced, usually sin/cos or triangular wave, modulating frequency is depending on system needs.Should
Control signal by X-axis feeding network 202 be delivered in the automatically controlled phase modulation unit 204 of X-axis carry out X-axis optical phase adjust, also by
Y-axis feeding network 203 is delivered to the optical phase adjustment that Y-axis is carried out in the automatically controlled phase modulation unit 205 of Y-axis, the automatically controlled phase modulation unit of X-axis
204 and the automatically controlled phase modulation unit 205 of Y-axis be reduced to linear phase shifter, respectively control X-axis phase control signal and Y-axis phase
Control signal.The automatically controlled phase modulation unit 204 of X-axis links optical antenna by X-axis connecting line 206, and the automatically controlled phase modulation unit 205 of Y-axis is logical
Cross the phase controlling letter that Y-axis connecting line 207 links optical antenna, the automatically controlled phase modulation unit 204 of X-axis and the automatically controlled phase modulation unit 205 of Y-axis
Number by coupling unit 208 couple after be output on optical antenna.
The present embodiment combines automatically controlled optical phase arrays and traditional optical parts are for example launched light collimating lenses 3, received
Optical lens 8 etc., the functions such as collimation are undertaken by traditional optical lens, design and the control for substantially reducing optical phase arrays are difficult
Degree.In addition, the transmitting optical phase arrays chip 4 of the present embodiment and reception optical phase arrays chip 9 are using resonance type
Structure, such as optical antenna are nano-antenna so that transmitting optical phase arrays and reception optical phase arrays can play arrowband
Filter action, it can further improve system signal noise ratio, simplied system structure.
The utility model is by combining traditional optical instrument and optical phase arrays, and dual-mode antenna realizes solid state, to micro-
The requirement of processing technology received substantially reduces.Moreover, transmitting and reception synchronous optical phased array of the utility model using light source
Design, avoid single-geophone receiver unit 60 from receiving mode using wide-angle, keep the technical characteristic at laser radar narrow visual field angle so that
Radar more adapts to strong light environment, has higher signal to noise ratio, stronger antijamming capability.Resonance type optical phase arrays are adopted
With the function that can further substitute narrow band pass filter, reach higher filter effect.
In another embodiment, as shown in figure 4, the utility model is designed using double optical axises, optical axis will be launched with connecing
Receive optical axis to separate, the light scanning unit of transmitting optical phase arrays chip 4 and reception optical phase arrays chip 9 is all using saturating
Emitting optical phase arrays.Specifically, transmitter 1 is using 905nm semiconductor laser, and laser driven module 2 is by analog circuit
Composition, produce peak power 70W, the electric pulse of the nanosecond of halfwidth 5.Transmitting light collimating lenses 3 are aspherical mirror, material PMMA
（Polymethylmethacrylate, polymethyl methacrylate）, there is good translucency.Certainly, the present embodiment is not
The transmitting light collimating lenses 3 of PMMA making are confined to, PC (Polycarbonate, makrolon), glass can also be used（Dioxy
SiClx）, zinc selenide（ZnSe）, zinc sulphide（ZnS）, calcirm-fluoride（CaF2）, magnesium fluoride（MgF2）, lithium fluoride（LiF）, silicon（Si）It is single
Brilliant, germanium（Ge）Monocrystalline etc..The fast axle and slow axis of the lasing fluorescence of transmitter 1 after transmitting light collimating lenses 3 collimate, dissipate respectively
Angle is 3mrad.Laser vertical after collimation is coupled to light scanning unit, and hair is formed by launching optical phase arrays chip 4
Phasar is penetrated, the phased array is controlled by the electric signal of central controller 20, to by each pixel list of phased array
The laser of member makees phase-modulation.Launch the direction of the launch shape that optical phase arrays chip 4 modulates the transmitting phasar formed
Into transmitting light wave valve Fig. 5, the wavefront of the emergent light of phased array is modulated onto some special angle, change electrical modulation signal and then
Realize automatically controlled scanning.Single-geophone receiver unit 60 uses the avalanche diode of single pixel unit（APD）As optical receiver 6, connect
The optical signals signal processing module 7 received is handled, including low level signal amplification, peak holding, calendar scheduling.Single-geophone receiver list
The receipts optical antenna of member 60 is by reception optical lens 8 and receives the realization of optical phase arrays chip, and reception optical lens 8 is large area
（Diameter 5mm-40mm）PMMA convex lens, there is larger clear aperature through reception light.Launch the He of optical phase arrays chip 4
Receive optical phase arrays chip 9 to be connected with central controller 20, by 20 automatically controlled modulation of central controller, and receive optics
The automatically controlled signal of phased array chip 9 is synchronous with the control signal for launching optical phase arrays chip 4, has identical or close
Receive light wave valve Figure 10.The design of synchronous optical phased array is received and dispatched, keeps the technical characteristic at laser radar narrow visual field angle so that
Radar more adapts to strong light environment, has higher signal to noise ratio, stronger antijamming capability.
Concentrate and focus on for convenience of optical signal, above transmitting light collimating lenses 3, reception optical lens 8 can set for simple lens
Meter or the design of poly-lens group, to reach the standard of optical signal concentration.Also, launch light collimating lenses 3 to laser or LED
The angle of divergence is less than 10mrad after light source collimates；Receive optical lens 8 and the optical signal being collected into is focused on into optical receiver 6
On.And the automatically controlled modulation system for launching optical phase arrays chip 4 and reception optical phase arrays chip 9 is not limited to be based on liquid crystal
Automatically controlled modulation, the automatically controlled modulation based on piezoceramic material, the automatically controlled modulation based on nonlinear crystal, based on nano-antenna
Automatically controlled modulation.Also, launch optical phase arrays chip 4 and receive the structure that optical phase arrays chip 9 uses resonance type,
, can be further such as nano-antenna, transmitting optical phase arrays and reception optical phase arrays can play narrow-band filtering effect
Improve system signal noise ratio, simplied system structure.
The range finder module of the implementation case is based on pulse time-of-flight distance-finding method（Including pulse, phase, CW with frequency modulation
Ranging mechanism）, using pulse ranging method, either phase ranging method or FM-CW laser ranging method carry out ranging, optical alignment and
Focusing is completed by traditional optical lens, and optical scanner is then by two optical phases of transmitting terminal and receiving terminal synchronization electric signal
Array is realized.
Referring to Fig. 5, in a further embodiment, the utility model is designed using double optical axises, and transmitting optical axis is with receiving light
Axle separates, and the light scanning unit of transmitting optical phase arrays chip 4 and reception optical phase arrays chip 9 all uses reflection-type
Optical phase arrays.Single transmitter unit 50, as transmitter 1, is driven using 905nm semiconductor laser by laser driven module 2
Dynamic transmitting Ray Of Light, the reflection-type optical of the formation of optical phase arrays chip 4 is got to after transmitting light collimating lenses 3 collimate
On phased array, by detecting the optical signal that reflects of target, by the reception optical phase arrays of single-geophone receiver unit 50
After the reflection-type optical phased array that chip 9 is formed, light signal transduction is directed into detection and received in light aperture, by receiving optics
After lens 8, it is focused on optical receiver 6, the signal received is handled by signal processing module 7.What the present embodiment provided
The lidar transmit-receive Antenna Design of reflection-type optical phased array and processing are all relatively simple, easily realize.
In yet another embodiment, referring to Fig. 6, the utility model can also use uniaxial design, that is, launch optical axis with
It is coaxial to receive optical axis, transmitting optical phase arrays and reception optical array are coplanar, launch optical phase arrays chip 4 and receive light
The light scanning unit for learning phased array chip 9 all uses transmissive optical phased array, except transmitting light collimating lenses 3, receives
Also set up one group of reflective microscope group 15 outside optical lens 8 to be used for during the optical signal of reflection is reflexed to 60 in single-geophone receiver unit, instead
The slant setting of light microscopic group 15, transmitting light collimating lenses 3, reception optical lens 8 face reflective 15 two inclined planes of microscope group respectively, and
And the aperture 14 of optical signal is provided with reflective microscope group 15.Specifically, single transmitter unit is 905nm ripples with transmitting light source
Long semiconductor laser drives transmitting light beam, by the standard of light collimating lenses 3 as transmitter 1 by pulse laser drive module 2
Collimated light is obtained after straight, the light scanning unit shape then directly beaten in optical phase arrays chip 4 is launched through small holes 14
Into transmitting optical phase arrays on, the flashlight that is reflected by target is controlled by receiving optical phase arrays chip 9
Emerging wavefront, which is modulated onto, after the reception optical phase arrays of system receives in light aperture, is passed through after the reflective microscope group 15 with aperture 14
Cross reception optical lens 8 to be focused on optical receiver 6, signal realizes that distance measuring signal is read by signal processing module 7.
Advantage of the present utility model is：
1st, the dual-mode antenna of scanning type laser radar realizes solid state, passes through being used cooperatively for Traditional optics, laser
The functions such as collimation, parallel light focusing are realized that the function of the automatically controlled scanning of optics is real by optical phase arrays by traditional optical camera lens
It is existing, greatly reduce design difficulty and difficulty of processing；
2nd, dual-mode antenna is all made by the light scanning unit comprising transmitting optical phase arrays and reception optical phase arrays
For transmitting light and receive the optical window of light, transmitting light and after receiving the control signal synchronization of optical phase arrays of light can be with
The advantages of high s/n ratio of effective holding narrow visual field angle laser radar, avoid receiving using big angle of visual field reception antenna and face battle array
Device, signal to noise ratio is both improved, greatly reduce system cost again, while reduce system complexity；
3rd, launch optical phase arrays chip and receive optical phase arrays chip and use the structure of resonance type, such as receive
Rice antenna, transmitting optical phase arrays and receives optical phase arrays and can play narrow-band filtering effect, can further improve and is
System signal to noise ratio, simplied system structure.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, it is all in this practicality
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (4)
1. a kind of lidar transmit-receive antenna based on optical phase arrays, it is characterised in that including based on single-point transceiver
Range finder module, signal processing module, central controller and laser driven module, the laser driven module and signal processing module
It is connected with the central controller；The range finder module includes single transmitter unit and the light for receiving detected thing reflection
The single-geophone receiver unit of signal, the single transmitter unit include the transmitter for producing optical signal and launch optical signal for adjusting
Optical phase transmitting optical phase arrays chip, the single-geophone receiver unit includes being used for the light for adjusting the reflection of detected thing
The reception optical phase arrays chip of the optical phase of signal and for receive transmitting light optical receiver, the transmitter with
The laser driven module connection, laser driven module driving transmitter launch light beam, the optical receiver and the letter
The connection of number processing module, the optical signal that the signal processing module processing optical receiver is sent calculate and detect the distance of thing；
The transmitting optical phase arrays chip and reception optical phase arrays chip are connected with the central controller, the transmitting
Optical phase arrays chip controls launch the direction of the launch of light, the transmitting for receiving optical phase arrays chip controls and receiving light
Direction.
2. the lidar transmit-receive antenna according to claim 1 based on optical phase arrays, it is characterised in that the hair
Penetrate optical phase arrays chip and receive the chip that optical phase arrays chip is resonance type structure, include sweeping with optics
The signal input unit of unit, optical antenna, automatically controlled phase modulation unit, feeding network and coupling unit are retouched, the signal input is single
Member receives optical signal, and produces a control signal and be sent to the automatically controlled phase modulation unit, the electricity by the feeding network
The optical phase of phase modulation unit adjustment optical signal is controlled, the control signal of the coupling unit coupled phase is simultaneously output to the optics
On antenna；The optical phase arrays active region area of the transmitting optical phase arrays chip is described to connect more than 4 square millimeters
The optical phase arrays active region area for receiving optical phase arrays chip is more than 25 square millimeters.
3. the lidar transmit-receive antenna according to claim 1 based on optical phase arrays, it is characterised in that the list
Point transmitter unit also includes being used to that the transmitting light collimating lenses of beam collimation will to be launched, and the transmitting light collimating lenses are simple lens
Design or the design of poly-lens group；The fast axle and slow axis of the transmitter transmitting light beam pass through the transmitting light collimating lenses respectively
Collimated, the emergent light of diverging is collimated into less parallel light, be coupled tovertically in the optical phase arrays chip, by institute
State the exit direction of transmitting optical phase arrays chip adjustment light.
4. the lidar transmit-receive antenna according to claim 1 based on optical phase arrays, it is characterised in that the list
Point receiving unit also includes the reception optical lens that combination is designed by simple lens or poly-lens group, and diameter range is 5 millimeter -40
Millimeter, obtains optical signal of the larger clear aperature by reflection, and the optical signal that detected thing reflects is focused on into optics receives
In device.
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