332results about How to "Avoid crosstalk" patented technology

The invention relates to the technical field of audio control, and provides an audio control method and device, electronic equipment and a storage medium. The audio control method comprises the steps that a sound effect test is carried out on a target space based on a specified measurement signal to obtain environment response information, and the environment response information comprises pulse response information and information obtained after pulse response is separated; analyzing the environmental response information to obtain acoustic characteristic information of the target space; performing compensation processing on the to-be-processed audio based on the acoustic characteristic information to obtain a regulated audio; regulating and controlling the gains of the multiple sound channels corresponding to the regulated and controlled audio to obtain audio regulated and controlled again; and carrying out multi-channel collaborative optimization processing on the audio after being regulated and controlled again to obtain the audio with a target effect. According to the method, accurate compensation of the acoustic defect of the target space is realized, the problem of crosstalk between sound channels is effectively solved, the positioning and space sense of the sound image is remarkably improved, the overall hearing sense of the audio is greatly improved, and the audio output is continuously optimized.

The invention relates to a temperature field and deformation field synchronous measurement system and method based on laser speckle DIC and temperature field algorithm temperature measurement. The system comprises a 3CCD color camera, a lens, a three-band filter, a monochromatic light source, a mechanical support adjusting platform, a triangular support and a computer. A test piece is actively illuminated by blue laser, and a color image containing three channel sub-images of red, green and blue on the surface of a high-temperature sample before and after deformation is acquired by a 3CCD color camera. A temperature field algorithm is used for analyzing sub-images of the R channel and the G channel after deformation to calculate a temperature field of the surface of the test piece, and a digital image correlation method is used for analyzing sub-images of the B channel before and after deformation to obtain a strain field of the surface of the test piece, so that synchronous measurement of the temperature field and the deformation field of the surface of the test piece is realized. The principle is simple, the system structure is compact, temperature field measurement is not interfered by speckles, and non-contact, high-precision and synchronous measurement of a material deformation field and a temperature field under the action of force and thermal loads can be achieved.

The invention belongs to the technical field of semiconductors, and discloses an image sensor and a manufacturing method thereof. The photoelectric sensing areas are arranged on the substrate, the isolation structures are arranged between the adjacent photoelectric sensing areas on the substrate, and each isolation structure is a grating structure which is formed by stacking a plurality of material layers and has a light blocking effect; the light filtering element is arranged on the photoelectric sensing area; and the grating is arranged on the isolation structure. The imaging performance of the image sensor can be effectively improved.

The present application discloses an anti-crosstalk sensing circuit of a capacitive pressure sensing array and a sensing method thereof, which relates to the field of capacitive pressure sensing technology. The circuit alternately inputs a positive excitation voltage and a negative excitation voltage at the driving end of each row of pressure sensing capacitors through a row selection state, and the detection end of each column of pressure sensing capacitors is respectively connected to the inverting input end and the reference voltage of the corresponding operational amplifier according to the column selection state, and obtains a first detection voltage and a second detection voltage corresponding to the positive excitation voltage and the negative excitation voltage output by the output end of the operational amplifier, respectively, and calculates the capacitance value of the pressure sensing capacitor of the target row based on the amplitude of the positive excitation voltage and the negative excitation voltage, the first detection voltage and the second detection voltage, and the capacitance value of the reference capacitor. The present application can prevent the crosstalk phenomenon between the same row or the same column of the capacitive pressure sensing array, and significantly improve the detection accuracy of the sensing circuit of the capacitive pressure sensor array for the sensing capacitor.

The invention discloses a swing scanning type laser panoramic three-dimensional scanning device based on a high-precision rotary table and a panoramic measurement method, the swing scanning type laser panoramic three-dimensional scanning device based on the rotary table is used for realizing laser scanning, and a camera only collects line contour information of one surface area every time; the problem of plane mirror light path crosstalk formed in different ROI regions is effectively avoided. Line laser can be projected to the plane mirror at any angle, slight front-and-back pitching of the plane mirror does not affect the measurement result, the installation requirement is low, and the device has the advantages of higher spatial resolution, high precision, large scanning range, high measurement scene applicability, high measurement efficiency and wide application range. Compared with a conventional linear scanning mode, the swing scanning type laser scanning device has the advantage of higher information acquisition speed, and when a sample with a large size is reconstructed under a large working distance, the information acquisition efficiency based on the swing scanning type laser scanning mode is far higher than that of translation scanning.

The embodiment of the invention provides wireless audio receiving equipment, a live broadcast audio system, wireless monitoring equipment and a storage medium. The wireless audio receiving equipment is respectively connected with the wireless audio acquisition equipment and the wireless monitoring equipment; the wireless audio receiving device comprises a first wireless module, a second wireless module and a master control module. The first wireless module receives real-time audio data collected by the wireless audio collecting device and monitors noise signals. The second wireless module synchronously sends the received real-time audio data to monitoring equipment and monitors noise signals; the main control module sends the real-time audio data received by the first wireless module to the second wireless module, and controls switching of working channels based on noise signals monitored by the first wireless module or the second wireless module.

The invention discloses a wavelength division multiplexing-based all-fiber mirror image frequency sweeping interference distance measuring device and method, and relates to the technical field of absolute distance measurement. The objective of the invention is to solve the technical problems in the prior art that frequency spectrum aliasing, frequency sweep nonlinearity, Doppler effect and dispersion mismatch occur in frequency sweep interference measurement, and the measurement precision, the measurement efficiency and the reliability of an all-fiber mirror image frequency sweep interference ranging system cannot be ensured. According to the technical scheme provided by the invention, the wavelength division multiplexing-based all-fiber mirror image frequency sweeping interference distance measuring device comprises a laser unit used for outputting frequency sweeping light; the measurement interferometer light path is used for generating a measurement signal according to the sweep frequency light; the auxiliary interferometer light path is used for generating an auxiliary signal according to the sweep frequency light; the gas chamber calibration light path is used for carrying out auxiliary interferometer light path calibration according to the sweep frequency light; and the data acquisition and processing module is used for obtaining a distance measurement result according to the measurement signal, the auxiliary signal and the calibration signal. The method is applied to the work of all-fiber mirror image frequency sweeping interference distance measurement.

The invention discloses a low-repetition-frequency spiral microcavity structure and a design method, and belongs to the field of silicon-based integrated photon chips. The low-repetition-frequency spiral microcavity structure comprises a first spiral bent waveguide, a second spiral bent waveguide, an internal connection bent waveguide, an external connection bent waveguide and a bus waveguide. The curvature radius of each point of the internal connection bending waveguide changes along with the length and meets the Euler spiral equation, and the internal connection bending waveguide is used for connecting the starting points of the first spiral bending waveguide and the second spiral bending waveguide. The external connection bending waveguide is used for connecting the end points of the first spiral bending waveguide and the second spiral bending waveguide. The first spiral bent waveguide, the second spiral bent waveguide, the internal connection bent waveguide and the external connection bent waveguide form a closed spiral annular waveguide. A light beam transmitted in the bus waveguide is coupled into the spiral annular waveguide. The invention further discloses a design method of the low-repetition-frequency spiral microcavity structure. According to the invention, loss caused by high-order mode crosstalk and mode mismatch can be reduced, and the area utilization rate of a chip is improved.

The invention relates to a dual-frequency electromagnetic metasurface unit, array and method for enhancing underground signal coverage, and the metasurface unit comprises a dielectric layer which comprises a first dielectric layer and a second dielectric layer; the surface of the first dielectric layer is provided with a metal resonance layer, and a metal isolation layer is arranged between the two dielectric layers; feeder lines are arranged at the bottoms of the two dielectric layers; a first resonance piece of the metal resonance layer is located in the middle of the surface of the first dielectric layer, and a first metal column penetrating through the first resonance piece and the first dielectric layer is arranged in the middle of the first resonance piece; the second resonance piece and the third resonance piece are respectively positioned on two adjacent side parts of the surface of the first dielectric layer and are connected with the first resonance piece through a diode; one end of the second resonance piece and one end of the third resonance piece are respectively provided with metal columns. One end of the feeder line is connected with the metal column. According to the dual-frequency electromagnetic metasurface unit, array and method for enhancing underground signal coverage, energy loss and radiation loss can be reduced, and the dual-frequency electromagnetic metasurface unit, array and method have efficient electromagnetic wave reflection capacity in a low frequency range.

The invention provides a capillary array and a preparation method and application thereof. The capillary tube array comprises a capillary tube bundle which is composed of a plurality of glass capillary tubes with parallel axes; light absorption layer glass is arranged between any two capillary tubes; the softening point of the tube body glass of the glass capillary tube is T1, the softening point of the light absorption layer glass is T2, and the difference value between T1 and T2 is 60-150 DEG C; the metal wires are embedded among at least three adjacent capillary tubes; the space between the at least three adjacent capillary tubes is filled with the light absorption layer glass; the light absorption layer glass wraps the outer side of the metal wire to fix the metal wire. The technical problem to be solved by the invention is how to prepare the capillary tube array, so that the liquid flash optical fiber panel prepared from the capillary tube array has the capability of resisting recoil proton crosstalk, light crosstalk resistance, high spatial resolution and simple preparation process, thereby being more practical.

The invention discloses a high-noise-immunity ranging imaging method and system based on quantum correlation measurement, belongs to the technical field of quantum radar and single photon detection, and particularly relates to a high-noise-immunity ranging imaging system and method based on quantum correlation measurement. Comprising a narrowband energy-time entangled two-photon source, a free space optical transceiving unit and a physical information acquisition unit, two photons with entanglement characteristics output by the narrowband energy-time entanglement two-photon source are respectively input into the free space optical transceiver unit and the physical information acquisition unit. The physical information acquisition unit jointly receives the photons directly output by the narrowband energy-time entanglement two-photon source and the photons output by the free space optical transceiving unit, so that the physical information of the measured object is obtained; according to the invention, the problems of small signal-to-background ratio and input saturation of the single-photon detector in the quantum correlation measurement field are solved, so that the system can carry out clear imaging under the condition of larger background noise.

The invention discloses a multi-membrane stack type electrolysis device for producing acid and alkali by using high-salinity organic wastewater, and relates to the technical field of high-salinity organic wastewater treatment.The multi-membrane stack type electrolysis device comprises a stack system, a direct-current power source system and a liquid path circulation system, and the stack system comprises an anode clamping plate and a cathode clamping plate; an anode plate is arranged at one end, facing the cathode clamping plate, of the anode clamping plate, a cathode plate is arranged at one end, facing the anode plate, of the cathode clamping plate, and a plurality of circulating stack units are arranged between the cathode plate and the anode plate; the circulating stack unit comprises a wastewater chamber partition plate, a cation exchange membrane, an alkali chamber partition plate, a bipolar membrane, an acid chamber partition plate, an anion exchange membrane, a wastewater chamber partition plate and a flexible double-electrode plate. Therefore, under the action of an external electric field, salt cations and salt anions in the wastewater are directionally migrated and respectively enter the alkali chamber and the acid chamber through the anion-cation exchange membrane, so that the purpose of recovering salt is achieved. Meanwhile, salt in the wastewater is removed, and organic matters are degraded, so that the subsequent biochemical treatment efficiency of the wastewater is improved.

The invention provides a full-duplex Ka up-down conversion channel which comprises a carrier plate, a Ka up-down conversion channel connected to the upper surface of the carrier plate, a Ka up-conversion channel, a frequency synthesizer circuit, a cavity filter, a high local oscillator dot frequency PDRO, a low local oscillator dot frequency PLS, a constant-temperature crystal oscillator connected to the lower surface of the carrier plate, a clock and a control circuit. The method is not limited to only complete a single function of up-conversion or down-conversion, can support simultaneous work of an up-conversion channel and a down-conversion channel of the same or similar frequency points while supporting multiple working modes and multi-channel work, can realize good spatial isolation, and avoids frequency crosstalk caused by simultaneous work of the similar frequency points; compared with an existing frequency conversion channel, two paths of high-stability clock signal channels are added, related reference clock signals can be provided for the outside, especially when the frequency conversion channel is applied to an information processor, matching of the frequency conversion channel serving as a radio frequency front end and other modules including a base band and a control module is more flexible, the integration degree is increased, and space is saved.

The invention belongs to the technical field of optical fiber sensors, and discloses an optical fiber SPR (Surface Plasmon Resonance) sensor and a preparation method thereof. The optical fiber SPR sensor provided by the invention comprises a first optical fiber, a capillary optical fiber and a multimode optical fiber, the first optical fiber is an optical fiber capable of realizing double-path optical transmission, the surface of the capillary optical fiber is plated with a metal film, and two ends of the capillary optical fiber are respectively welded with the first optical fiber and the multimode optical fiber; an optical signal transmitted along a first path of the first optical fiber enters the inner wall of the capillary optical fiber to be totally reflected, and interacts with the metal film to generate SPR (Surface Plasmon Resonance) which is received by the multimode optical fiber for external refractive index sensing; and the optical signal transmitted along the second path of the first optical fiber enters the air cavity of the capillary optical fiber and is received by the multimode optical fiber after passing through the air cavity, and the two paths of optical signals at the output end form Mach-Zehnder interference for external temperature sensing. According to the invention, external refractive index and temperature change can be measured at the same time, cross-talk can be avoided, and high sensitivity is achieved.

The invention discloses a mid-infrared and far-infrared heterogeneous integrated optical fiber combiner and a preparation method thereof, and belongs to the technical field of mid-infrared optical fiber devices.The combiner comprises six sulfur-based chalcogenide optical fibers with the working wave band being 3-5 microns and four Te-based chalcogenide optical fibers with the working wave band being 7-11 microns, the six sulfur-based chalcogenide optical fibers and the four Te-based chalcogenide optical fibers are mixed in a heterogeneous mode, and ten input optical fibers are closely arranged according to a regular triangle; beam combination transmission is formed by optimizing a low-temperature fused biconical taper process, the optical fiber is precisely welded with an output optical fiber with a slightly large core diameter, and finally the optical fiber is packaged. The beam combiner realizes broadband efficient laser transmission, has the characteristics of excellent beam quality, high synthesis efficiency, large total output power, compact structure and strong stability, and can be widely applied to the fields of optical fiber sensing, laser processing, national defense and the like.

The invention relates to an interference type sensing device for multiplexing and a demodulation system and method, the sensing device is formed by sequentially connecting a plurality of interference type sensing units in series, and each interference type sensing unit is characterized in that two input ends of a circulator are respectively connected with an F-P cavity optical fiber sensor and a linear chirp fiber grating sensor, and an output end of the circulator is connected with a coupler; the reflection bandwidth of the fiber bragg grating of the linear chirped fiber bragg grating sensor just covers one period of the reflection spectrum of the F-P cavity, and the reflection wavelength ranges of the fiber bragg gratings of the plurality of interference type sensing units are not overlapped. The demodulation system comprises a broadband light source, an interference type sensing device and a signal detector. According to the invention, real-time measurement of a plurality of sensors on one optical fiber is realized, the multiplexing capacity is improved, the structure of a detection and demodulation system is simplified, the number of required optical fibers is reduced, and the complexity of the system is reduced.

The invention provides a multi-band composite high-integration TR assembly. The multi-band composite high-integration TR assembly comprises a shell, a front multi-layer board, a back multi-layer board, a C / X / Ku band receiving and transmitting circuit, a C / X / Ku band single receiving circuit and a Ka band receiving and transmitting circuit, wherein the front multi-layer board and the back multi-layer board are connected in the shell, the C / X / Ku band receiving and transmitting circuit is connected with the front multi-layer board, and the Ka band receiving and transmitting circuit is connected with the back multi-layer board. The low-cost scheme design of an all-solid-state microwave multilayer board suitable for batch production and testing is adopted, ports and transmission line layout are reasonably designed, multi-band composite mode transmission is achieved in the form of the front face and the back face, a C / X / Ku-band transmitting circuit and an H-polarization receiving circuit are integrated on the front face, and the transmission efficiency is improved. A C / X / Ku frequency band V polarization receiving circuit and a Ka frequency band receiving and transmitting circuit are integrated on the reverse side, different functional circuits are respectively transmitted through a microstrip line and a strip line through an interface circuit structure covering 1-40 GHz and an in-board vertical transition structure, the isolation degree of different circuits is improved, mutual crosstalk between different signals is avoided, and the transmission efficiency is improved. And the functions of high integration, high consistency, ultra wide band, numerical control phase shift, numerical control attenuation and the like of the assembly are realized.

The invention discloses an LSPR (Localized Surface Plasmon Resonance) detection device and detection method based on wavelength phase co-modulation, and the device utilizes a liquid crystal variable delayer to carry out phase delay on polarized light so as to realize sinusoidal modulation of emergent light intensity. The difficulty of demodulating the LSPR phase signal is reduced, the acquisition speed of the LSPR phase signal is improved, and the detection sensitivity is greatly improved. A light intensity image is recorded through the area array detector, and each pixel of the area array detector corresponds to one sensing channel, so that the detection flux is effectively improved. The optical filter is used for carrying out tunable filtering on incident light, controllable wide-field excitation of the LSPR sensing chip with different wavelengths is realized, crosstalk among different spectrums caused by strong scattering of the LSPR nano-chip due to simultaneous excitation of a broadband light source is avoided, and the accuracy of the LSPR sensing technology is further improved. Moreover, a plurality of suitable wavelengths are spliced, and phase detection is performed on a specified site, so that the dynamic detection range of the LSPR phase signal is effectively expanded.

The invention discloses a multi-image grading encryption method based on a fingerprint key and off-axis digital holography, which comprises the following encryption steps: firstly, grading an encryption user and a plaintext image to be encrypted, then collecting an encryption fingerprint of the encryption user and generating a fingerprint chaos phase mask; performing hierarchical encryption on a plurality of plaintext images by using improved double random phase coding and off-axis digital holographic coding, and finally generating an amplitude type ciphertext; and a decryption step: firstly, authenticating a decryption fingerprint by using a fingerprint column code authentication technology, generating a fingerprint chaos conjugate phase mask for decryption after the authentication succeeds, and then performing hierarchical decryption on the ciphertext by using improved off-axis digital holographic decoding and improved double random phase decoding so as to obtain a plurality of decryption images. The multi-image hierarchical encryption method provided by the invention has the advantages of high security level, strong fingerprint key robustness, high digital key sensitivity, high decryption quality and differentiated authorization of users.

The utility model relates to the technical field of voltage and current acquisition, in particular to a multichannel direct-current voltage and current acquisition circuit, which comprises an MCU (Microprogrammed Control Unit) processing module and a plurality of current and voltage acquisition modules, and is characterized in that each current and voltage acquisition module comprises a voltage sampling unit, a current sampling unit, an analog-to-digital conversion unit, an analog front-end unit and an isolation unit, the voltage sampling unit and the current sampling unit are electrically connected with the analog front-end unit through a common end, the analog-to-digital conversion unit is electrically connected with the analog front-end unit and the isolation unit, and the isolation unit is electrically connected with the MCU processing module, so that electrical isolation between channels is realized, the anti-interference performance of simultaneous measurement of multiple channels is remarkably improved, and the measurement accuracy is improved. And crosstalk between channels is avoided.

The invention discloses a full silicon carbide voltage sag treatment device and a control method. The device comprises a first silicon carbide static change-over switch K1, a second silicon carbide static change-over switch K2, a third silicon carbide static change-over switch K1, a third silicon carbide static change-over switch K3, an energy storage converter, an energy storage battery and three ports I, II and III, by utilizing the device, a fault source of voltage sag is positioned and treated by detecting the voltage state of a port, and grid connection / grid disconnection / removal is carried out on the energy storage converter according to actual requirements through an off-grid control algorithm and a grid connection control algorithm, so that rectification / inversion mode conversion is realized, and the reliability of the energy storage converter is improved. Input and output power is adaptively adjusted according to the change of power grid frequency, and bidirectional energy flow and peak load shifting are realized. According to the invention, the cost is low, rapid voltage sag treatment with millisecond-level response time can be realized, power supply of a sensitive load can be effectively guaranteed when a power grid fails, and the energy storage converter has a self-adaptive peak regulation function and has a certain practical value.

The invention belongs to the technical field of LED display chips, and discloses a Micro LED display chip and a preparation method thereof.According to the Micro LED display chip and the preparation method thereof, an epitaxial wafer MQW layer is processed through ultrafast pulse laser, so that an EBL layer and a P-GaN layer which can be free of ICP etching are prepared through subsequent deposition processing, the preparation method for constructing a vertically-distributed LED display chip is greatly simplified, and the manufacturing cost is reduced. And meanwhile, through the design of the cathode shallow slot network and the deep through holes, relatively high current density can be realized, and optical crosstalk can be effectively prevented.

The invention discloses a wavelength-independent real-time polarization imaging method and device based on a metasurface, and belongs to the field of polarization imaging. Comprising a to-be-tested sample, a first lens, a two-dimensional polarization grating, a one-dimensional polarization grating, a second lens, a polarizing film and an image sensor which are sequentially arranged along a light path, a light beam irradiates a to-be-measured sample and then passes through a first lens, and a part of a light field enters a two-dimensional polarization grating to be modulated and split into two left-hand circular polarization components and two right-hand circular polarization components through diffraction; part of the light field is directly transmitted to the one-dimensional polarization grating and is diffracted and split into left-handed and right-handed circular polarization components; at the focal point of the second lens after diffraction splitting, one left-handed circular polarization component and one right-handed circular polarization component diffracted and split by the two-dimensional polarization grating are completely overlapped with the left-handed circular polarization component and the right-handed circular polarization component diffracted and split by the one-dimensional polarization grating respectively; and the light reaches the image plane of the image sensor through the polarizer. According to the invention, the problem of wavelength dependence in the existing single-exposure polarization imaging technology is solved.

The invention relates to a finger-pressing type nucleic acid detection micro-fluidic chip, which comprises a bottom layer, a flow channel layer, a finger-pressing layer and a thin film layer, the flow channel layer comprises an LAMP reaction chamber, a CRISPR reaction chamber, a water storage chamber, a Tesla valve, a finger-pressing chamber and a test paper reaction chamber, the LAMP reaction chamber comprises a nucleic acid extraction-free reaction system based on LAMP, the CRISPR reaction chamber comprises a CRISPR-based cas12b reaction system, and the test paper reaction chamber comprises a Tesla valve, a finger-pressing chamber and a test paper reaction system. The water storage chamber is mainly used for diluting a mixed system, and the Tesla valve is used for preventing crosstalk of the two reaction systems; the finger pressing layer comprises an LAMP reaction chamber button and a CRISPR reaction chamber button, when the LAMP reaction chamber button is pressed, liquid in the LAMP reaction chamber is pumped into the CRISPR reaction chamber, when the two buttons are pressed at the same time, a reaction mixing system is pumped into the water storage chamber to be mixed, and then the reaction mixing system is further pumped into the test paper reaction chamber. The chip can be widely applied to the field of rapid diagnosis of nucleic acid molecules, the detection cost is reduced, manual operation is simplified, and the detection efficiency is improved.

The invention relates to an image sensor and a preparation method thereof, and electronic equipment, the image sensor comprises a substrate, a plurality of isolation structures and a plurality of photodiodes, the isolation structures are arranged in the substrate at intervals, the photodiodes are arranged between the adjacent isolation structures, and each isolation structure comprises a first isolation layer located in the substrate; the first high-dielectric-constant dielectric layer is located on the side, away from the substrate, of the first isolation layer; the reflecting layer is located on the side, away from the first isolating layer, of the first high-dielectric-constant dielectric layer; the second high-dielectric-constant dielectric layer is located on the side, away from the first high-dielectric-constant dielectric layer, of the reflecting layer; wherein the reflecting layer and at least one of the first high-dielectric-constant dielectric layer and the second high-dielectric-constant dielectric layer have the same element. According to the image sensor, the situation that the second high-dielectric-constant dielectric layer is gathered at the bottom of the isolation structure can be avoided, the uniformity of the side wall of the isolation structure is improved, and therefore the reflection efficiency is improved.

The invention discloses a rectification memristor with a synaptic simulation function and application thereof, and belongs to the field of artificial intelligence. The memristive device adopts a sandwich structure and is sequentially composed of an upper Ag electrode, an AgI and PbI2 functional layer and a lower ITO electrode. The memristor provided by the invention has a rectification characteristic, effectively solves the sneak current problem in crossbar integration, and ensures accurate reading of device data in an array. Meanwhile, good nerve synaptic functions including dipulse suppression, dipulse simplification, long and short range memory response and synaptic weight plasticity are achieved under circulating electric pulses, and human brain nerve synaptic processing, learning and working behaviors and the like can be simulated. According to the invention, the PbI2 material is successfully applied to integration of multiple functions of rectification, storage and neuromorphic simulation for the first time, and a new possibility is developed for application in the fields of neuromorphic simulation and artificial neural networks.

The invention relates to the field of lamps, and discloses a light guide part, a lamp and a carrier, the light guide part comprises at least two light guide sections which are arranged in sequence, and every two adjacent light guide sections are connected through a connecting section; wherein each light guide section is provided with a light inlet part and a light outlet part, the light inlet parts are used for allowing light of the light-emitting assembly to enter the light guide sections, the light outlet parts are used for allowing the light of the light guide sections to be emitted, and the connecting sections are configured to limit at least part of the light to be transmitted between the two adjacent light guide sections. The light guide part is designed to be of the structure that the at least two light guide sections and the connecting sections are alternately connected, independent segmented control over all the light guide sections can be achieved, for example, the on-off states of different light guide sections are independently adjusted, or differentiated color output of all the light guide sections is achieved, the problem that a traditional light guide part is single in light emitting effect is effectively solved, and the light guide part is more convenient to use. And diversified and differentiated light emitting requirements are fully met. The connecting sections can effectively limit light transmission between the adjacent light guide sections, and the light crosstalk phenomenon is avoided.

The present application belongs to the field of Micro-LED micro-nano optical light field control technology, and relates to a microlens collimation structure and a micro light emitting diode. The microlens collimation structure includes: a first aperture set on the periphery of the display chip, a first microlens stacked on the side of the first aperture away from the Micro-LED backplane, a base layer and a second microlens; wherein the first microlens is a plano-concave lens, and its surface close to the first aperture is a concave high-order aspheric surface, and the second microlens is a plano-convex lens, and its surface away from the base layer is a convex high-order aspheric surface. The light hole of the first aperture, the sub-mirror centers of the first microlens and the second microlens are all aligned with the center of the display chip. The present application uses the first aperture to eliminate stray light, and uses the concave high-order aspheric surface on the first microlens and the convex high-order aspheric surface on the second microlens to focus the light beam to achieve light beam collimation, which not only avoids beam crosstalk between adjacent display chips, but also reduces the beam divergence angle.

According to the pressure-temperature dual-mode sensor and the preparation method and application thereof provided by the invention, the pressure sensing layer is designed into the gradient inclined magnetic column array which is distributed in a rectangular array, and the gradient inclined magnetic column array has the layout characteristics of gradient change and inclination of the length, the position and the like of the magnetic columns; a special magnetic field gradient can be created in the space, and the magnetic field gradient can enable the pressure-temperature dual-mode sensor to generate linear or relatively uniform change response to external stimuli with different magnitudes, so that the measuring range of pressure testing can be widened; the problems of inaccurate measurement and small measurement range caused by the stress concentration problem of other microstructures and the large structure overlapping phenomenon are effectively solved. And meanwhile, the pressure sensing layer and the temperature sensing layer are tested in a layered manner, so that the problem of mutual crosstalk of a temperature signal and a pressure signal is avoided, and the detection accuracy and precision of the pressure-temperature dual-mode sensor are further improved.

The invention discloses a near-to-eye display system and display method based on retina projection, and belongs to the technical field of display products. The near-to-eye display system comprises an image generation unit, a waveguide device, a second phase element and a secondary polarizer holographic element; the image generation unit is used for generating an imaging light beam with image information; the waveguide device is used for receiving the imaging light beam of the image generation unit and carrying out light path folding on the imaging light beam; the second phase element selectively converts the imaging light beam into first polarized light or second polarized light; the secondary polarization body holographic element is used for receiving the first polarized light or the second polarized light emitted by the second phase element; the second phase element selectively converts the first polarized light or the second polarized light to converge the first polarized light or the second polarized light to different viewpoints through the secondary polarizer holographic element. On the premise that the convergence adjustment conflict problem is solved, the eye movement range is increased, and the image crosstalk and dark space phenomena are avoided.