34 results about "Optical fiber coupler" patented technology

The utility model provides a kind of optical fiber optical tweezers fluorescence lifetime detection equipment, by the light beam emitted by light source is divided into two ways, using the first optical fiber coupler to the two-way light signal received is coupled, and the light signal after coupling is transmitted to the optical fiber circulator connected, transmission to displacement control assembly by optical fiber circulator. Displacement control assembly utilizes one-way light signal to carry out target micro-particle capture, utilizes another light beam corresponding light signal to excite target micro-particle to generate excitation fluorescence signal, utilizes detection assembly to carry out photon number detection to excitation fluorescence signal, determines the fluorescence lifetime of target micro-particle. The utility model equipment can be realized in flexible control micro-particle, and the fluorescence lifetime of micro-particle is detected, and the utility model is more simple and efficient, applicable to precision large instrument to carry out ultrafast signal detection.

The application provides a distributed optical fiber acoustic wave sensing system and a pattern recognition method. The application relates to the fields of optical fiber sensing and pattern recognition, and the system comprises the following steps: continuous coherent light emitted by a narrow-line-width laser is split into two paths by a beam splitting fiber coupler, one path is used as local reference light, and the other path is used as probe light; the probe light is modulated into optical pulses in an acousto-optic modulator driven by a waveform generator, and the optical pulses are injected into a measured sensing optical fiber through a fiber loop; Rayleigh backscattering light returned through the measured sensing optical fiber is mixed with the local reference light through the fiber loop, and the mixed light is decomposed into two orthogonal polarized light beams in a polarization beam splitter and is transmitted to a first balanced photodetector and a second balanced photodetector respectively to be converted into electrical signals; and the two orthogonal interference electrical signals are synchronously collected by a data acquisition card and are sent to a host computer for demodulation. The application provides a new distributed acoustic wave monitoring method with high reliability and high generalization ability, and has extremely high engineering popularization value.

This invention provides a near-infrared therapy device for improving Alzheimer's disease, characterized by comprising: a frequency-modulated drive circuit 1, a near-infrared LD light source 2, an optical fiber coupler 3, a light source power monitoring photodetector (PD) 4, an optical power monitoring circuit 5, an optical fiber beam splitter 6, an MPO optical fiber cable 7, and an optical transmitter 8. The optical transmitter includes an optical transmitter housing 8-1, a fiber-end hemispherical emitting microlens 8-2, and a beam-shaping coupling lens 8-3. This invention can be used to regulate the metabolism and cellular function of meningeal lymphatic endothelial mitochondrial cells, promote meningeal lymphatic transport in the central nervous system, thereby alleviating the pathological symptoms of Alzheimer's patients and enhancing their cognitive function. The device has a simple and compact structure, is easy to plug and unplug, has low optical signal loss, and high coupling efficiency. It can be widely used in novel non-invasive optical brain-computer interface devices and belongs to the field of fiber optic sensing technology.

The present application belongs to the field of gas-liquid two-phase flow measurement and optical fiber sensing technology, and particularly relates to a liquid metal bubble detection sensor based on optical fiber reflection. A light signal is emitted from a laser light source, transmitted to an optical fiber probe module through a spatial light beam splitter or a fiber coupler, and reflected at the end face of the optical fiber probe module; the reflected light enters a photoelectric detector again through the spatial light beam splitter or the fiber coupler, is converted into an electric signal through a photoelectric conversion circuit, transmitted to a computer through a data acquisition card, and outputted after signal processing to obtain the void fraction and bubble frequency of the detected opaque liquid metal; the optical fiber sensor is based on the obvious difference in reflectivity at the interfaces between the opaque liquid metal, the bubbles and the optical fiber material, and the speed and distribution information of the bubbles are determined by analyzing the echo signal received by the photoelectric detector. The present application can stably and accurately complete bubble detection in a high-temperature liquid metal environment.

The application discloses an interference filter type multi-wavelength erbium-doped fiber laser based on optical path difference regulation, relates to the technical field of a ring-shaped tunable multi-wavelength erbium-doped fiber laser, and comprises a pump source, a wavelength division multiplexer, an erbium-doped fiber, an isolator, a first optical fiber coupler, a three-paddle polarization controller, a polarizer, a Mach-Zehnder interferometer filter containing an adjustable delay line, a black phosphorus saturable absorber and an extrusion type polarization controller which constitute a ring cavity. By connecting a 0-6.6 cm continuous adjustable delay line to one arm, the optical path difference of the filter two arms is accurately regulated, and continuous precise tuning of wavelength spacing of 0.3 nm to 1.54 nm is realized; meanwhile, by combining the nonlinear polarization rotation effect and the hybrid mode-locking mechanism of the few-layer black phosphorus, the mode-locking threshold is significantly reduced, and the long-term stability of the pulse is improved. The laser can realize stable emission of up to six wavelengths at the same time, the wavelength drift is less than 0.75 nm, and the power fluctuation is less than 7.0 dB.

The application discloses a general stereofluorescence lighting device and a stereofluorescence microscope, which comprises a mainframe base, a fluorescence emission sheet turntable and an electric control board. The mainframe base comprises an outer shell with a bottom plate, a light source module which is slidably installed on the bottom plate and uses LED light source to gather LED light and filter the LED light through the excitation sheet, a driving mechanism, a heat dissipation device and a fiber coupler which focuses and introduces the filtered LED light into an optical fiber. The fluorescence emission sheet turntable comprises a fixed disc which is installed on a stereomicroscope lens and a rotating disc which is provided with a fluorescence emission sheet. A positioning recognition device which recognizes different fluorescence emission sheets is arranged between the rotating disc and the fixed disc. The electric control board receives a recognition signal from the positioning recognition device to control the driving mechanism to drive the corresponding light source module to move and drive the corresponding LED light source to align the fiber coupler to output the required excitation light. The application is suitable for all stereomicroscopes, reduces the cost of the stereofluorescence microscope and makes the stereofluorescence microscope widely applicable.

This utility model relates to the field of optical fiber communication technology, and in particular to an optical fiber coupler packaging assembly. The technical solution includes a metal cylinder containing a metal optical fiber. The outside of the metal cylinder is provided with a first packaging part and a second packaging part for sealing. The first packaging part has two slots for limiting positioning on its side near the second packaging part. Each of the two slots has a positioning groove on its top inner wall for positioning. The second packaging part has two positioning structures for assembling the first and second packaging parts on its side near the first packaging part. Each positioning structure includes an insert plate for installation, and the top of the insert plate has a storage groove. This utility model, through the arrangement of slots, positioning grooves, insert plates, guide plates, and positioning posts, enables rapid assembly and disassembly of the first and second packaging parts, not only improving assembly and disassembly efficiency but also effectively avoiding adhesion and seizing by replacing threaded connections with snap-fit ​​connections.

The invention relates to a coupler (100, 200) for optical fibers (500, 500'), in particular plastic-based optical fibers, wherein: the coupler comprises a plurality of fiber receptacles (130, 230) on each of a first side (110, 210) and a second side (120, 220) opposite the first side; pairs of the plurality of fiber receptacles are oppositely arranged, and the coupler has one coupling region between each pair of oppositely arranged fiber receptacles; the coupler comprises, for each fiber receptacle, a fixing means (150, 250) for fixing one optical fiber in each fiber receptacle; and the coupler is designed to align two optical fibers, disposed in two oppositely arranged fiber receptacles, with respect to one another in the relevant coupling region; characterized in that the coupler comprises at least one connecting element (160, 260) for stackable connection to at least one further coupler (100', 200').

The invention relates to a coupler 100, 200 for optical fibers 500, 500', in particular plastic-based optical fibers, wherein the coupler has a plurality of fiber receptacles 130, 230 on a first side 110, 210 and a second side 120, 220 opposite the first side, wherein two of the plurality of fiber receptacles are opposite each other, wherein the coupler has a coupling area between each pair of opposite fiber receptacles, wherein the coupler has a fixing means 150, 250 for each fiber receptacle for fixing one optical fiber in the fiber receptacle, and wherein the coupler is configured to align two optical fibers arranged in two opposite fiber receptacles with each other in the respective coupling area, characterized in that the coupler has at least one connecting element 160, 260 to be connected to at least one further coupler 100',200' stackable and connected.

This invention provides a detachable coaxial assembly and adjustment device and method for a scanning fiber optic cantilever, belonging to the field of optical endoscopic imaging technology. It includes an auxiliary assembly and adjustment structure and a piezoelectric scanning structure. The auxiliary assembly and adjustment structure includes an outer sleeve, a ceramic ferrule, and an inner sleeve. The piezoelectric scanning structure includes an optical fiber, a coupler, a piezoelectric ceramic tube, and a piezoelectric ceramic tube base. One end of the outer sleeve is fitted to and glued to the outer diameter of the ceramic ferrule, and the other end of the outer sleeve is fitted to the outer diameter of the inner sleeve. The inner sleeve can slide axially within the outer sleeve. A viewing window structure is provided on the outer sleeve. The inner hole of the ceramic ferrule is fitted to the outer diameter of the optical fiber. The inner diameter of the inner sleeve is fitted to the outer diameter of the boss on the piezoelectric ceramic tube base. The inner diameter of the inner sleeve is larger than the outer diameter of the piezoelectric ceramic tube, and the inner sleeve and the piezoelectric ceramic tube do not contact each other. This invention, using the above-mentioned detachable coaxial assembly and adjustment device and method for a scanning fiber optic cantilever, solves the problem that high-precision coaxial constraints are required during the assembly and fixing stage of the scanning fiber, while no additional constraints are required during the working stage.

This invention provides a fiber optic laser length measurement system, comprising: a linearly swept laser, a first fiber coupler, a signal amplification module, a circulator, a second fiber coupler, a photodetector, and the fiber laser under test. The linearly swept laser outputs continuously varying laser light to the first fiber coupler. The first fiber coupler splits the laser light output from the linearly swept laser into two paths according to a certain beam splitting ratio; one path is transmitted as a signal light to the signal amplification module, and the other path is transmitted as a reference light to the second fiber coupler. The signal amplification module amplifies the signal light and outputs it to the circulator. This invention effectively solves the problems of low signal-to-noise ratio, poor accuracy, and poor stability in the prior art when measuring the fiber length of fiber lasers.

The application relates to the field of high-power fiber lasers, and particularly discloses a femtosecond laser preparation method of a pump light recycling grating and a spectrum measuring device. The preparation method takes a double-clad fiber as a substrate, adopts femtosecond laser to be focused in the inner cladding through a coating layer, writes a fiber Bragg grating through a multi-layer line scanning technology, prepares a uniform grating or a chirped grating, and flexibly controls a grating modulation area by adjusting parameters. The spectrum measuring device is composed of an ASE broadband light source, a multimode fiber coupler, a multimode fiber matched with the inner cladding diameter and a double spectrometer, and realizes real-time and accurate measurement of the transmission and reflection spectrum of the inner cladding grating. The application solves the problems of low coupling efficiency, poor reliability and difficulty in reflecting specific wavelengths in the traditional pump light recycling technology, the prepared grating is uniform in modulation, the pump light reflection effect is good, residual pump light can be recycled efficiently, and the system efficiency and integration level of the high-power fiber laser are significantly improved.

The application relates to a lens detection device, which comprises a coherent light source, an optical fiber, a first optical fiber coupler and an analysis module. The first optical fiber coupler is connected with the optical fiber and the coherent light source. Light output by the coherent light source is transmitted to the first optical fiber coupler through the optical fiber and is divided into two beams. One beam is transmitted to a measuring light path through the optical fiber, and the other beam is transmitted to a reference light path through the optical fiber. The measuring light path is provided with a lens to be measured. The analysis module is connected with the optical fiber and the first optical fiber coupler. The first optical fiber coupler is used for coupling a measuring beam reflected back by the measuring light path and a reference beam reflected back by the reference light path into the optical fiber connected with the analysis module. The analysis module is used for receiving interference information generated by the measuring beam and the reference beam and analyzing a center deviation of the lens to be measured. The lens detection device provided by the application realizes the measurement of the center deviation of the lens to be measured through the optical fiber connection, has the characteristics of small occupied volume and high reliability.

The application discloses an optical fiber coupling device. The optical fiber coupling device comprises an optical assembly, a first block, an optoelectronic conversion accommodation space arranged on the front end bottom of the first block, a plurality of optical fiber counterbores arranged on the rear end of the first block and extending to the front end thereof, and a reflecting surface arranged on the first block and used for implementing light propagation between the optical fiber counterbores and the optoelectronic conversion accommodation space; a crosser comprising a second block and a plurality of optical fiber through holes arranged on the second block and penetrating the second block in the front-rear direction. When the front end of the crosser is butted against the rear end of the optical assembly, each optical fiber through hole is opposite to a corresponding optical fiber counterbore. The optical fiber coupling device has lower requirements on machining precision and assembly precision, is easy to reduce manufacturing cost, has smaller overall size and is easy to meet the development demand of miniaturization and high-density integration of an optical module.

The embodiment of the application provides a kind of distributed optical fiber sensing system based on set sparse frequency sequence pulse light time domain reflection technology, it is related to optical fiber sensing technical field, including electro-optic modulator, laser frequency modulation module, line width compression module and optical fiber sensing module;The input end of electro-optic modulator is connected with light source, laser frequency modulation module includes fiber coupler and double parallel Mach-Zehnder modulator, the first input end of fiber coupler and the output end of electro-optic modulator are connected, the first output end of fiber coupler and the input end of double parallel Mach-Zehnder modulator are connected, the output end of double parallel Mach-Zehnder modulator and the second input end of fiber coupler are connected;The input end of line width compression module and the second output end of fiber coupler are connected;The output end of line width compression module is connected with the input end of acoustooptic modulator of optical fiber sensing module, to make that the spatial resolution, detection distance and frequency band width etc. Parameters of distributed optical fiber sensing system simultaneously have higher performance.

The present application relates to a kind of near-field optical super-resolution carrier dynamics imaging system, wherein probe light is shot into near-field optical scanning microscope system by probe beam expander component and probe attenuator component, pump light is sequentially shot into near-field optical scanning microscope system by pump beam expander component, pump attenuator component, pump light delay component and acoustooptic modulator component, near-field optical scanning microscope system includes upper objective lens, scanning probe, sample support, lower objective lens, near-field beam splitter, near-field filter component and convex lens in the direction of probe light path in turn, pump light is focused on sample after being reflected by near-field beam splitter and forming the path direction opposite to probe light and being shot into lower objective lens, probe light is shot out by convex lens and input into lock-in amplifier by fiber coupler and photomultiplier tube.The present application combines near-field optical super-resolution imaging technology with femtosecond transient absorption spectroscopy technology, and realizes the high space-time resolution visual detection of microcosmic carrier dynamics.

A coupler facilitates coupling of optical signals from an interposer configured having an optical signal source to one or more optical fiber in an FAU coupled to the coupler. Tongue and groove alignment features formed self-aligned with waveguide cores on the coupler facilitate alignment of waveguide cores on the coupler with waveguide cores on the interposer. FAU alignment aids formed on the coupler facilitate alignment of optical fibers mounted in an FAU to waveguide cores of the coupler. The tongue and groove alignment features and FAU alignment features, among other alignment features, are formed from the core layer of a planar waveguide layer of the coupler. Couplers configured having a cavity enable the coupling of an optical isolator within the waveguide layer of the coupler wherein one or more lens array may be formed in the cavity to couple optical signals across the cavity and the optical isolator.

The application relates to the technical field of photoelectric signals, and provides a detection device, which comprises an optical fiber, a photomultiplier and an optical fiber coupler, the optical fiber has a light output end face, and the photomultiplier has a light receiving end face. The optical fiber coupler comprises a limiting piece and a fixing seat, the limiting piece comprises a limiting column and a limiting plate, the limiting column is formed with a limiting cavity which has openings on both sides in the axial direction, and the limiting plate is arranged at the opening on the first side of the limiting cavity in the axial direction; the fixing seat is arranged on the second side of the limiting piece in the axial direction, the fixing seat is formed with a containing cavity which is communicated with the limiting cavity, part of the optical fiber is contained in the limiting cavity, the side surface of the limiting plate in the axial direction abuts against the optical fiber, the photomultiplier is connected with the fixing seat, part of the photomultiplier is located in the containing cavity, and the light receiving end face faces the light output end face. The detection device provided by the application can improve the detection efficiency of the detection device.

The application discloses a kind of measuring device and method for measuring piezoelectric ceramic modulator, comprising: narrow linewidth laser for generating stable laser, the laser is as input light, inject into first optical fiber coupler;The output end of first optical fiber coupler is connected with the piezoelectric ceramic modulator to be measured and the optical fiber delay line respectively;The optical signal output by first optical fiber coupler is output to the piezoelectric ceramic modulator to be measured and the optical fiber delay line respectively;The output end of the piezoelectric ceramic modulator to be measured and the optical fiber delay line are connected with the input end of second optical fiber coupler;The optical fiber signal output by the piezoelectric ceramic modulator to be measured and the optical fiber delay line is injected into second optical fiber coupler;The output end of second optical fiber coupler is connected with optical oscilloscope.The problem of the performance measurement absence of existing piezoelectric ceramic modulator is solved.

The utility model relates to the technical field of optical fiber coupler, propose a kind of optical fiber miniaturization coupler, including coupling main body, two optical fiber connectors are oppositely arranged and respectively inserted in the both ends of coupling main body, upper seat body is arranged in the upside of one end of coupling main body, for clamping one optical fiber connector;Lower seat body is arranged in the downside of the other end of coupling main body, for clamping another optical fiber connector;Lower screw cap rotation is arranged on coupling main body, and is opened and closed with upper seat body cooperation, for buckling in the downside of upper seat body, and for clamping the optical fiber connector in upper seat body;Upper screw cap rotation is arranged on coupling main body, and is opened and closed with lower seat body cooperation, for buckling on the upside of lower seat body, and for clamping the optical fiber connector in lower seat body. Through the above technical scheme, the problem that buckling operation is inconvenient when fixing optical fiber connector in the prior art is solved.

The application discloses a high-peak-power all-fiber femtosecond laser system based on GMN spectrum shaping technology, and belongs to the field of laser technology and nonlinear optics. The system comprises an all-fiber broadband GMN seed source, an all-fiber gain narrowing spectrum shaping system based on a nonlinear amplification ring mirror, a high-power fiber laser amplifier and a pulse compressor. The system comprises the following optical devices: a pump source, a wavelength division multiplexer, a gain fiber, a 2*2 fiber coupler, a beam combiner, a filter, a pump stripper and a grating pair compressor. The high-peak-power all-fiber femtosecond laser system based on GMN spectrum shaping technology can further amplify the broadband light source generated by the GMN technology, and introduces the spectrum shaping gain narrowing technology, so that the output energy and peak power of the laser system are improved while ensuring the output of the ultra-short pulse width femtosecond laser, and the application prospect of the gain management nonlinear amplification technology is widened.

The application discloses a wavelength positioning system of a Faraday laser, and belongs to the technical field of optical measurement, which comprises a Faraday laser, laser output by the Faraday laser passes through a 1 / 2 optical fiber coupler, laser output from the 1 / 2 optical fiber coupler is input into a polarization maintaining fiber, the polarization maintaining fiber is coupled with a whispering gallery mode micro-ring core cavity, a laser output end of the polarization maintaining fiber is connected with a photoelectric detector, and an oscilloscope is connected to the photoelectric detector; the central wavelength of the Faraday laser is adjusted, and the wavelength of the Faraday laser is scanned in the process until a Lorentz transmission spectrum generated after laser is coupled with the micro-ring core cavity is obtained on the oscilloscope. The wavelength positioning system utilizes the whispering gallery mode micro-ring core cavity to replace a commercial wavelength meter, and realizes rapid wavelength positioning of the Faraday laser. Compared with a traditional commercial wavelength meter, the whispering gallery mode micro-ring core cavity has a lower manufacturing cost.

The utility model relates to the technical field of optical fiber coupler, especially a kind of easily connected coupler, including connecting end, the connecting end includes two-way shell and connecting inner shell, the connecting inner shell is symmetrically installed in two-way shell both ends inner side, and connecting inner shell is fixedly connected with two-way shell, the both ends of two-way shell are equipped with the plug connector of cooperation, the outside surface of plug connector is provided with several snap fittings with two-way shell cooperation, and still be equipped with the push plate piece of cooperation with snap fitting on plug connector. The coupler of the application is matched by snap fitting and push plate piece, realizes simple and convenient connection and disassembly operation, does not need additional tool, greatly improves the efficiency of installation and maintenance. The reasonable design of two-way shell and plug connector and the close cooperation of snap fitting and longitudinal slot ensure the stability of coupler connection, which can effectively prevent loosening phenomenon in use.

The application provides an OCT welding monitoring system integrating ion light monitoring and FPGA real-time synchronous processing, and relates to the field of laser processing monitoring.The OCT welding monitoring system comprises the following steps: detecting light emitted by a wide-spectrum low-coherence light source is divided into a measurement arm light path and a reference arm light path through a fiber coupler; the measurement arm light beam is deflected through a scanning galvanometer and coaxially injected into a to-be-detected small hole together with welding laser; a spectrometer collects a wide-spectrum interference signal formed by superposition of return light of the measurement arm and return light of the reference arm at the fiber coupler; a dichroic mirror separates the detecting light and plasma light generated in the welding process according to wave bands; a focusing lens collimates the separated plasma light; a photodiode converts the plasma light output by a light path separation unit into a photoelectric current; and a FPGA processing unit takes the position feedback signal of the scanning galvanometer as an adaptive trigger reference.The application realizes hardware-level real-time compensation and confidence marking of the interference signal.

This invention discloses a synchronous measurement system for total temperature, static temperature, dynamic temperature, and flow velocity of a high-temperature, high-speed airflow. The components include a type B thermocouple, a temperature transmitter, two tunable diode lasers, a signal generator, an optical fiber coupler, a collimating mirror, a parabolic reflector, a photodetector, a data acquisition card, a high-temperature alloy mounting base, thermocouple branches, optical detection branches, and cage-type mounting accessories. The measurement system uses thermocouples and laser absorption spectroscopy to measure the total temperature and static temperature of the high-temperature, high-speed airflow, respectively. Then, based on the relationship between the total temperature, static temperature, dynamic temperature, and flow velocity of the high-temperature, high-speed airflow, the dynamic temperature and flow velocity of the airflow at the measured point in the flow field are determined. This invention achieves synchronous measurement of the total temperature, static temperature, dynamic temperature, and flow velocity of a high-temperature, high-speed airflow, and has advantages such as low cost, small size, portability, and fast data processing. It can be widely used in fields such as gas turbines and aero-engines.

The present application relates to a kind of transient absorption spectrum measuring devices based on near-field condition, wherein probe light is injected into near-field optical scanning microscope system after passing through probe beam expander assembly and probe attenuator assembly, pump light is injected into near-field optical scanning microscope system after passing through chopper, pump beam expander assembly, pump attenuator assembly and pump light delay assembly, near-field optical scanning microscope system includes upper objective lens, scanning probe, sample carrier, lower objective lens, near-field beam splitter, near-field filter assembly and convex lens in turn along probe light path, pump light forms the path direction opposite to probe light after being reflected by near-field beam splitter, and is focused on sample after being injected into lower objective lens, probe light is input into spectrometer by fiber coupler after being emitted by convex lens.The present application can accurately capture the transport, dissipation and dynamic change of carrier in nanoscale structure under the joint action of ultrafast time resolution and ultra-high spatial resolution.

A laser scanner or laser profiler for scanning of an object surface by measuring of distances to surface points comprising a light pulse source, a transmission unit, a receiving unit for receiving measurement light reflected from the object surfaces and for determining the respective distance to a surface point based on the received measurement light according to the principle of time-of-flight and a fiber network with a fiber based optical coupler being designed for transforming a respective light pulse into a series of spaced sub-pulses of different energies. The sub-pulses are digitally sampled, at least one of the sub-pulses having an energy yielding an electrical signal amplitude in the non-saturated range of the receiving unit is selected, and a respective distance is determined based on deducing a time-of-flight of the at least one selected sub-pulse.

The application belongs to the technical field of laser radar, and discloses a parallel linear frequency modulation continuous wave laser radar ranging and velocity measuring system, wherein laser of different wavelengths is emitted by a narrow linewidth single frequency fiber laser array, enters an electro-optic modulator after passing through a wavelength division multiplexer, and laser carrier output after passing through a fiber coupler is modulated by an arbitrary waveform generator and a microwave amplifier through the electro-optic modulator; the modulated light is divided into two beams of light by a beam splitter, one is a local oscillation light, and the other is a detection light; the detection light enters a fiber loop after power amplification by an EDFA amplifier, is emitted to an object after dispersion by a three-prism, and the reflected detection light enters the loop after entering the three-prism, mixes with the local oscillation light to enter a fiber coupler, and the light after the wavelength division multiplexer is obtained by a photoelectric detector to obtain an intermediate frequency signal, and then real-time N-way parallel fast Fourier transform is carried out to realize N-way distance and speed synchronous measurement. The application improves laser radar data acquisition rate and image refresh rate, and expands the field of view angle of the laser radar.

The utility model discloses a vehicle display device, including the casing, optical fiber coupler, a plurality of light diffusion plate, control module, the upper end of casing is provided with the upper cover, the optical fiber coupler sets up in the cavity of inside setting of casing to be used for with the single optical fiber cable of adjustable light angle independent transmission light of LED light source, optical fiber cable extends setting towards light diffusion plate and with light diffusion plate one -to -one and with light diffusion plate optical path connection, light diffusion plate is arranged according to the custom pattern symbol of the required interior trim of car and is set up generation custom indicator lamp and with the lower end of upper cover bonding to be used for with the light diffusion of optical fiber is area light and evenly irradiates to custom pattern symbol line back, control module is electrically connected with optical fiber coupler to realize the independent lighting of every optical fiber cable, extinguishing and discoloration control. The utility model realizes independent lighting, extinguishing and discoloration control to every optical fiber cable through control module, and can create the unique, individualized product.