346 results about "Polarization modulation" patented technology

The invention provides an adjustable spectrum-based liquid crystal display system and a control method thereof, relates to the technical field of display systems, and aims to overcome the limitations of poor environmental adaptability, easiness in causing visual fatigue, single user experience and the like of an existing display. The system creatively integrates a liquid crystal panel, a high-precision multi-main-color Micro-LED backlight, a pixel inner sensing array, an external multi-mode sensing module, a dynamic addressable micro-optical array, a dynamic polarization modulation layer and an optional transparent energy collection layer. The intelligent controller carries out fusion processing on the real-time biological state, environment information and application context data of the user obtained by the multi-source sensor, and carries out accurate state evaluation and future trend prediction. And determining an optimal space-time-direction-spectrum-polarized light field output characteristic and an intelligent energy management strategy through a multi-objective optimization decision engine, and driving each optical regulation and control component to execute in real time. The visual comfort and health level are remarkably improved, and the information fidelity and task performance in a complex environment are ensured.

The invention provides a self-adaptive polarization modulation-based inter-satellite laser communication and signal scheduling method, which relates to the field of laser communication, and comprises the following steps of: acquiring polarization state information of emitted and received light beams, calculating a mismatch degree, generating a compensation parameter, constructing a polarization state prediction model by using a deep learning neural network for pre-correction, and calculating the mismatch degree; a polarization modulator is adopted to perform real-time modulation and establish a link quality evaluation model, carrier synchronization and channel compensation are realized based on an adaptive optical carrier recovery technology of coherent detection, a link state is monitored in real time, and a training data set is updated.

The invention relates to a method and a system for inhibiting strong mutual reflection based on polarization complementary logic coding. The method comprises the following steps: acquiring calibration parameters of a camera and a projector; generating a polarization phase shift stripe based on the calibration parameter, designing a high-frequency complementary logic code word, and embedding the high-frequency complementary logic code word into a polarization channel through polarization modulation to obtain a composite stripe pattern; the method comprises the following steps: calculating to obtain a linear polarization degree image through an acquired multi-angle polarization image, extracting a high-reflection region from the linear polarization degree image by adopting an adaptive threshold segmentation method, and carrying out binarization processing on the linear polarization degree image to obtain a binarized linear polarization degree mask; and on the basis of a decoding range of a binary linear polarization degree mask constraint high-reflection region, decoding the composite stripe pattern to obtain absolute phase level information, and performing noise suppression on the absolute phase level information by adopting a self-adaptive threshold algorithm. The method can effectively solve the influence of mutual reflection and high dynamic range of the surfaces of the measured object, and improves the precision and stability of three-dimensional reconstruction.

The invention discloses a special environment laser radar system and method based on polarization modulation and laser coding. The laser radar system comprises a polarization modulation laser emitting unit, a multi-channel receiving unit and a compressed sensing reconstruction unit. The polarization modulation laser emission unit comprises a laser, a beam expanding module, a spatial light modulator, a micro galvanometer array, a spatial filter and a first focusing lens which are arranged in sequence; the multi-channel receiving unit comprises a second focusing lens, a polarization beam splitter and a single-pixel detector array which are arranged in sequence; and the compressed sensing reconstruction unit comprises a compressed sensing processing module, an image reconstruction module and a loop adaptive control module which are arranged in sequence. The anti-interference capability in a complex environment is enhanced through polarization modulation, the detection resolution and the signal-to-noise ratio are improved in combination with laser coding, the imaging quality and stability of the laser radar in a special environment are greatly improved, and the method can be widely applied to the fields of military reconnaissance, disaster rescue, unmanned driving and the like.

The invention discloses a rapid polarized light acoustic imaging device which comprises an excitation source, a light beam shaping module, a rapid polarization modulation module, an energy feedback module, a rapid scanning module and an acquisition processing module. And receiving photoacoustic signals corresponding to the exciting light in four different polarization states for calculation, and extracting anisotropy information of the sample. Compared with multiple times of scanning a sample or modulating the polarization state by rotating a half-wave plate, the problems of dislocation of multiple times of polarization acquisition points and false positive calculation are avoided, meanwhile, the time interval generated by continuously modulating the laser pulses is short, and energy fluctuation among the four pulses and errors caused by fluctuation are reduced. According to the invention, the limitation of the precision and speed of polarized light acoustic microscopic imaging is overcome, the microstructure characteristics in the target sample can be rapidly, accurately and highly sensitively detected, and the method has great application prospects in biomedical imaging and high-precision material detection.

The invention relates to the technical field of damage detection, and discloses a screen protection film damage detection method and system, and the method comprises the steps: carrying out the laser interference thickness scanning of a screen protection film, and obtaining three-dimensional thickness distribution data and thickness gradient vector field data; performing multi-layer polarization interference detection on the circularly polarized light beam based on the three-dimensional thickness distribution data to obtain polarization phase difference distribution data; according to the thickness gradient vector field data, non-periodic phase unenveloping processing is carried out on the polarization phase difference distribution data to obtain continuous polarization phase distribution data; performing stress optical coefficient tensor calculation and dynamic elliptical polarization modulation based on the continuous polarization phase distribution data to obtain stress damage space positioning data; the edge cutting area and the center bending area of the screen protection film are subjected to damage imaging reconstruction, a three-dimensional stress damage imaging result is obtained, and full-chain detection from geometric thickness change to stress distribution and then to damage positioning is achieved.

An optical detector system providing electrical output signals. The system includes an apertured surface and a transparent window, with a metasurface on the window's opposite side. The metasurface imparts spatially varying phase delay and / or amplitude or polarization modulation to deflect ILR based on their angle of incidence, producing exiting light rays. These rays are detected by a two-dimensional tetralateral position-sensing detector (TLD) with a single resistive photo-absorption layer and four electrodes. The TLD generates X-Y position signals proportional to the azimuth and elevation of the incoming ILR. A computer may be included to calculate these angular values from the position signals.

The invention relates to a micro display device for a bifocal plane HUD (head up display) system, which solves the problems of halved field of view, limited working bandwidth, low color saturation and low brightness of the existing bifocal plane HUD system, and comprises an image display module and a polarization modulation element arranged above the image display module, the polarization modulation element is used for polarization modulation of display pixels, the effective area of the sub-wavelength medium grating arrangement is equivalent to a 1 / 2 wave plate, the display pixels are separated in a row-by-row or column-by-column staggered mode through the sub-wavelength medium grating arrangement, and the problem that the view field is halved due to an existing target surface space partitioning scheme is solved. The two adjacent sub-wavelength medium gratings convert incident light into linear polarization states in two directions, the two directions are mutually orthogonal, and the two spaced sub-wavelength medium gratings are completely the same, so that the two images are respectively adjusted into the mutually orthogonal linear polarization states, and the two images are generated in a staggered manner.

The invention relates to the technical field of wafer detection, in particular to a wafer defect detection method and device, and aims to detect wafer defects by adopting a polarization modulation and decomposition scheme according to corresponding characteristics of wafer surface scattered light and defect scattered light in a wafer defect detection process. The wafer detection method for improving the wafer defect detection accuracy is formed, and the wafer detection system for improving the wafer defect detection accuracy is formed according to the wafer detection method.

The invention provides a polarization modulation coupling time control phase locking high-temperature noise suppression in-situ Raman method and device, and relates to the technical field of spectrum detection. The method comprises the following steps: exciting pulse linear polarization laser to irradiate a sample to obtain Raman scattering light; a parallel vibration component (P) and a vertical vibration component (S) are obtained, and original spectral data containing polarization information and residual high-temperature noise are collected by adopting an ISCCD detector synchronously triggered by gating. Background noise is removed and a parallel vibration component (P) is extracted through polarization differential processing in combination with adaptive filtering (dynamically adjusting parameters according to signal distribution) and principal component analysis (PCA); and finally, performing signal-to-noise ratio optimization on the pure component by applying a phase locking algorithm to finally obtain a Raman spectrum result with a high signal-to-noise ratio. According to the invention, the in-situ Raman spectrum of the material within the temperature range of room temperature to 3000 DEG C can be measured, and the detection of weak signals is more sensitive.

The invention relates to the field of optical measurement, in particular to a reflective interference film thickness measurement method and system for eliminating back scattering of a transparent substrate, and the method comprises the following steps: transmitting a light beam through a low-coherence-length broadband light source, and forming linearly polarized light through polarization modulation; focusing the light beam to the surface of the film through a confocal optical system; collecting reflection interference signals of the upper surface and the lower surface of the film; spatial filtering, low-coherence gating and polarization control are used for cooperatively inhibiting back scattering of the substrate. And processing the acquired interference signal, and calculating to obtain film thickness information. According to the invention, triple inhibition mechanisms are adopted for synergistic effect, and the method comprises the following steps: spatial filtering: shielding out-of-focus back reflected light through a confocal small hole; low-coherence gating: using a short coherence length to naturally suppress a reflected signal beyond a coherence range; and polarization control: further weakening stray light interference through polarization state matching, and effectively suppressing back scattering of the substrate.

Disclosed herein are an apparatus and method for mutual authentication of quantum entities based on Measurement-Device-Independent Quantum Key Distribution (MDI-QKD). The method may include configuring a quantum input form based on an authentication key shared in advance with a counterpart entity, applying polarization modulation to the configured quantum input form, transmitting the quantum input form to which polarization modulation is applied to a quantum measurement device, and authenticating the counterpart entity by checking whether the counterpart entity configures a quantum input form according to the shared authentication key using a measurement result and information about polarization modulation.

The invention belongs to the technical field of laser radars, and discloses a water surface reflected light suppression method and system in laser radar water level measurement, and the method comprises the steps: employing a multispectral fusion and dynamic polarization modulation technology, precisely filtering the interference of water surface reflected light, matching with a time-frequency domain combined filtering algorithm, and deeply analyzing signal features. An intelligent environment sensing mechanism monitors environment changes in real time, a machine learning model accurately predicts the trend of reflected light, system parameters such as laser transmitting power and receiving end gain are adjusted in advance, measurement errors are reduced, the water level measurement precision of the laser radar is greatly improved, and the water level measurement precision of the laser radar is greatly improved. The system reliability and stability are remarkably enhanced, the scheme is excellent in performance under severe conditions such as strong light by means of the capability of dynamically adapting to complex environment changes, the modular design of the system facilitates integration with an existing laser radar system, expansibility and compatibility are good, and the system can quickly adapt to equipment of different specifications and models.

The invention relates to the technical field of optical precision measurement, in particular to an ultra-high time resolution camera time characteristic detection device and method, and the device comprises a laser source which is used for generating pulse laser; the polarization modulation element is arranged on an emergent light path of the laser source and is used for modulating the pulse laser into circularly polarized light; the spectroscope is arranged on an emergent light path of the polarization modulation element and is used for decomposing the circularly polarized light into a first linearly polarized light beam and a second linearly polarized light beam; the first optical path unit is used for guiding the first linearly polarized light beam to the cylindrical optical element along a fixed optical path; the second optical path unit is used for adjusting the optical path of the second linearly polarized light beam and guiding the second linearly polarized light beam to the cylindrical optical element; and the cylindrical optical element is used for receiving the first linearly polarized light beam and the second linearly polarized light beam and respectively projecting the first linearly polarized light beam and the second linearly polarized light beam to an imaging surface of a camera to be detected to form two spatially separated light spots. The objective of the invention is to improve camera time characteristic calibration precision and efficiency.

The invention relates to the technical field of semiconductor manufacturing and detection, and discloses a glass wafer through hole three-dimensional shape detection system based on machine vision, and the system comprises a multi-angle light source cooperation illumination module which is used for achieving the comprehensive illumination of a glass wafer through hole; the polarization modulation module is used for enhancing weak scattering signals and acquiring scattering field information with a high signal-to-noise ratio; the high numerical aperture optical module is used for collecting scattered field data; the Fourier diffraction region inverse scattering reconstruction module is used for realizing preliminary reconstruction of three-dimensional defect distribution; the compressed sensing iterative optimization module is used for improving the three-dimensional reconstruction precision and obtaining accurate three-dimensional defect distribution of the side wall of the through hole of the glass wafer; according to the invention, the diffraction limit of traditional optical detection is broken through, and surface and internal defects can be simultaneously detected and distinguished.

The invention discloses a calibration method of a polarization focal plane imaging system and an imaging system, relates to the field of photoelectric imaging and remote sensing detection imaging, and solves the problems of low correction efficiency and difficulty in correcting a system with a changed polarization state in the conventional polarization error correction technology. According to the calibration method, a plurality of coding patterns and corresponding polarization modulation matrixes are obtained based on the collected uniform light field and serve as calibration results. The polarization error correction method comprises the steps of obtaining an observation intensity vector based on a target scene; a corresponding polarization modulation matrix is obtained based on the coding pattern according to a coding polarization modulation matrix lookup table, and then a down-sampling Stokes vector after polarization error correction is obtained; and completing the correction of the polarization error through an imaging reconstruction method. A polarization focal plane imaging system comprises an imaging lens, a DMD digital micromirror array coding module, a focal plane DoFP polarization detector and an imaging reconstruction module. The method is suitable for the fields of remote sensing detection, target identification, environment monitoring and the like.

The invention provides a light field three-dimensional reconstruction method and system based on a microlens array and polarization modulation, and a medium, and the method comprises the steps: carrying out the polarization coding of light rays at different angles at an exposure moment based on a polarization modulator, and obtaining different polarized light information; focusing light to an imaging surface based on an imaging lens, and recording view images of different polarized light information based on a micro-lens array; based on the polarization characteristics of the view angle image, view angle decoding is carried out on the view angle image based on the polarization characteristics, and light field images of multiple view angles are obtained; preprocessing the light field images of the multiple visual angles to obtain preprocessed images of the multiple visual angles; analyzing the light intensity distribution information based on the preprocessed image to obtain light field data, and reconstructing the light field image based on a reflective projection algorithm to obtain a reconstructed image; multi-view image capturing is achieved through multi-state polarization coding, light intensity analysis is conducted on multi-view light field images, three-dimensional reconstruction of a high-speed dynamic scene is achieved, and the image reconstruction precision is improved.

The invention relates to the technical field of nonvolatile memories, in particular to a 2T1FC ferroelectric memory cell with a memory gate line and a preparation method of the 2T1FC ferroelectric memory cell. The 2T1FC ferroelectric storage unit with the storage gate line comprises a ferroelectric capacitor and a storage transistor which realizes read-write operation of data through polarization modulation of the ferroelectric capacitor; the control transistor is used for enabling a bit line to perform gating access; and the storage gate line is used for controlling the gate of the storage transistor and improving the holding capability of the written data. According to the invention, the special storage gate line is used, so that self-charge dissipation after writing is prevented, and the non-volatility is enhanced; separation of the storage path and the control path minimizes accidental flipping in the read / write cycle; the service life of the device is prolonged by lower write-in current stress and an isolated gate structure; low-voltage writing with high retentivity can be realized, and the method is suitable for energy-limited edge AI equipment.

The invention relates to Device for quantum generation of random numbers comprising a light source (100) with fixed polarization and a polarization splitting element (110) optically connected thereto, having a first output (111) corresponding to vertical polarization and a second output (112) corresponding to horizontal polarization, and a first detector (131) optically connected to the first output (111) of the polarization splitting element (110) and a second detector (132) optically connected to the second output (112) of the polarization splitting element (110), a generating module (140) having a first input (141) connected to the output of the first detector (131) and a second input (142) connected to the output of the second detector (132), and a two-state output (143), the generating module (140) configured to generate on the two-state output (143) bits having a value of 1 upon receiving a signal on the first input (141) and bits having a value of 0 upon receiving a signal on the second input (142), characterized in that the light source (100) is connected to the polarization splitting element (110) via a multi-state polarization modulator (150) controlled by a digital or analog signal generated by a control electronics (160) connected to the multi-state polarization modulator (150).The invention comprises also a method for verification of privacy of random bit sequences generated by means of such a device.

The invention provides a dual complementary dynamic convolution optimization method and system for underwater robot image processing, and the method comprises the steps: enabling a polarization laser light source to excite a multi-band orthogonal polarized light sequence in an underwater robot, and receiving a reflected light signal containing suspended matter scattering polarization characteristics, operation target surface reflected light polarization modulation characteristics and water body transmission attenuation spectrum characteristics. An operation target reflection main signal frequency band and a suspended matter scattering harmonic interference frequency band are extracted through a noise separation chip, and the frequency bands are input into a dual complementary dynamic convolution optimization network to generate an adaptive enhancement feature map linked with an operation target space coordinate. And by combining the suspended matter scattering harmonic interference frequency band and the water body transmission attenuation spectrum feature optimization feature map, mechanical arm track correction parameters and propeller disturbance compensation coefficients are generated, and accurate control over the motion track of the underwater robot is achieved. The target detection precision and the motion control stability of the underwater robot are improved.

The invention discloses a stress regulation-based micro spectrometer system of a transparent polymer material. The system comprises a polarization modulation unit, a transparent polymer layer, an imaging detector and a spectrum reconstruction module. The transparent polymer material is stretched by a specific design and then is arranged between the two polarizing films of the polarization modulation unit, and the imaging detector chip is arranged at the bottom layer of the device. And the spectrum reconstruction module performs spectrum reconstruction on the data received by the imaging detector by applying a calculation spectrum reconstruction algorithm to restore the original spectrum data received by the whole device. According to the technical scheme, a new spectrum detection thought is provided, and high-resolution spectrum analysis can be carried out in each wave band while the size of a miniature device is ensured by adjusting the applicable wave band of each component.

The invention provides an acoustic signal detection system based on an echo wall mode microcavity acoustic sensor. The acoustic signal detection system can be applied to the technical field of acoustic signal sensing and detection. The acoustic signal detection system comprises an echo wall mode microcavity acoustic sensor used for performing amplitude and phase modulation on predetermined polarization modulation light to obtain output light under the condition that an external acoustic signal acts on the echo wall mode microcavity acoustic sensor and the predetermined polarization modulation light passes through the echo wall mode microcavity acoustic sensor; the detection unit is used for performing coherent processing on the output light based on the predetermined reference light to obtain two paths of target signals, and the two paths of target signals are related to the target transmission amount and the target phase amount; the processor is used for analyzing the two paths of target signals to obtain target transmission quantity and target phase quantity; and according to the target transmission amount, the target phase amount and a plurality of first target formulas, an external sound signal is obtained, and the plurality of first target formulas represent the incidence relation between the target transmission amount and the external signal and the incidence relation between the target phase amount and the external signal.

The invention discloses a confocal full-Mueller matrix imaging device and method based on an optical fiber metasurface array, and belongs to the technical field of polarized optical imaging. The device comprises an optical fiber array multi-polarization illumination module, a sample scanning module, a scattered light transmission module, a metasurface array polarization modulation module and a polarized light intensity detection module. The polarization states of four beams of light are regulated and controlled through the optical fiber polarization controller, and four illumination focal spots in different polarization states are generated on a sample plane at the same time; sample scattered light is modulated by a polarization measurement metasurface array comprising four independent metasurface units, and the polarization state of each path of optical signals is projected to sixteen polarized light spots which are spatially separated; and finally, acquiring light spot intensity information by an area array detector, and reconstructing a full-Mueller matrix image of the sample through calculation. According to the invention, full-Mueller matrix information can be obtained through single scanning, and the device has the characteristics of high resolution, compact structure, good compatibility and the like, and can be used for multi-dimensional polarization microscopic analysis of samples.

The invention discloses a lithium niobate electro-optical polarization modulator based on an adiabatic coupling structure and a modulation method thereof. The modulator comprises a first adiabatic coupling polarization beam splitting rotator, an electro-optical phase modulator and a second adiabatic coupling polarization beam splitting rotator, wherein each adiabatic coupling polarization beam splitting rotator comprises an input waveguide, an adiabatic coupler and a separation waveguide. According to the modulation method, transmission is carried out through a straight-through end in a first adiabatic coupling type polarization beam splitting rotator, and TE0 is kept unchanged; when the input light is TM0, the input light is converted into TE0 through the first adiabatic coupling type polarization beam splitting rotator and is transmitted through the cross end. And after phase modulation is carried out by the electro-optic phase modulator and beam combination is carried out by the second adiabatic coupling type polarization beam splitting rotator, output light is remapped into TE0 and TM0, and the polarization state is determined by the relative phase difference, so that dynamic regulation and control of the polarization state are realized.

The invention belongs to the technical field of production of cultural and creative products, and discloses a sorting and conveying device for production and preparation of cultural and creative products based on industrial vision. The device comprises a shading channel, a fixed support, a sliding frame, a motor, an intermittent transmission mechanism, a clamping mechanism, a synchronous belt, a polarization transmission shaft, an industrial detection camera and the like, the shading channel is a core detection space, the fixed support plays a role in supporting and leveling, the sliding frame can slide along a guide rail, and the motor drives an intermittent transmission turntable through a transmission part; the clamping mechanism adaptively clamps the ceramic product, and the optical system comprises a polarization disc, an inclined mirror surface and the like to realize accurate detection; 360-degree dead-corner-free detection of ceramic products, defect identification enhancement through dynamic polarization modulation, efficiency improvement through double-view-angle detection and self-adaptive clamping nondestructive protection can be achieved, through mechanical transmission precise control and optical dynamic modulation, the detection precision and efficiency are greatly improved, the labor cost is remarkably reduced, the method is suitable for large-scale production scenes, and intelligent upgrading of creative and creative production is assisted.

The invention discloses a self-adaptive three-beam interference super-resolution microscopic imaging system and method, a light source module generates laser which sequentially passes through a polarization beam splitting module and an electro-optic phase modulation module, three beams of laser subjected to phase modulation are output, and the three beams of laser pass through an optical path compensation module to complete optical path compensation; then the laser enters the laser polarization vector modulation module for polarization modulation, the modulated laser enters the aberration correction module through the laser beam combining module, three beams of light irradiate a sample on a displacement table after aberration correction, fluorescence excited by the sample passes through the aberration correction module again to complete aberration correction, and then an image is obtained through the filtering imaging module. And the acquisition control module synchronously controls the electro-optic phase modulation module, the laser polarization vector polarization modulation module and the aberration correction module and receives an image shot by the filtering imaging module, so that high-speed real-time super-resolution microscopic imaging and high-quality aberration correction are finally realized, the three-dimensional resolution of the image, especially the resolution along the axial direction, is improved, and the imaging quality is improved. And artifacts in the image are reduced.

The invention relates to the technical field of wafer detection, in particular to a wafer surface defect detection system and method.The system comprises an imaging module, the imaging module comprises at least two sets of imaging channels, each imaging channel comprises an imaging camera for collecting light signals and converting the light signals into image signals, and a light modulation assembly is arranged in each imaging channel; the light modulation assembly performs polarization modulation and light intensity modulation on emergent light reflected or scattered by the surface of the wafer; the polarization control module adjusts the rotation angle of the light modulation assembly in each imaging channel; the signal processing module carries out differential operation on different image signals, light rays emitted by the multiple groups of imaging channels are set with different polarization parameters and light intensity parameters through the light modulation assembly, multiple groups of image signals are obtained, and an imaging image about scattered light of the same detection area is formed. The imaging image comprises an image with the defect signal as weak as possible and an image with the defect signal as strong as possible, and the imaging image with the defect signal enhanced can be obtained through differential operation.

The invention discloses a multi-channel spectrum-controllable liquid crystal display system and a multi-channel spectrum-controllable liquid crystal display method. The system comprises a multi-channel backlight module, a liquid crystal display panel and a control module, the multi-channel backlight module is used for generating a backlight source comprising a plurality of spectrum sub-channels, the spectrum sub-channels cover different spectrum ranges, and the output intensity can be independently adjusted; the liquid crystal display panel comprises a liquid crystal layer, a first polaroid, a second polaroid, a red color filter, a green color filter and a blue color filter, wherein the red color filter, the green color filter and the blue color filter are arranged on the liquid crystal layer and used for conducting spectrum selection and polarization modulation on light from the multi-channel backlight module. The control module is used for cooperatively controlling the backlight output intensity of each spectrum sub-channel and the driving parameters of the liquid crystal display panel according to the display target containing the target spectrum distribution constraint on the premise of not changing the color filter structure and the pixel arrangement structure of the liquid crystal display panel; therefore, controllable reconstruction of the display spectrum output by the liquid crystal display panel is realized. An existing liquid crystal display panel structure does not need to be changed, the regulation and control freedom degree of a display system on the output spectrum can be improved, and a system-level solution is provided for achieving the display effect close to natural spectrum distribution.

A wearable electronic device is provided. The wearable electronic device includes a light output module, a display member configured to output at least a portion of light emitted from the light output module to a first surface, and transmit light incident on a second surface opposite to the first surface, a first polarizing reflector disposed on the second surface and configured to reflect at least a portion of first leakage light, to the first surface, a polarization modulator disposed on the first polarizing reflector and configured to modulate and transmit at least a portion of a polarization component of second leakage light which has passed through the first polarizing reflector, and to transmit the modulated light and a second polarizing reflector disposed on the polarizing modulator and configured to reflect at least a portion of third leakage light, which is at least a portion of the second leaked light and has passed through the polarizing modulator, to the first surface.

The invention relates to an edge enhancement imaging system. The system comprises a point light source; the object side polarization filtering unit is arranged on the light emitting side of the point light source and modulates the light into specific polarized light to irradiate a sample; the imaging unit is arranged on the light emitting side of the object side polarization filtering unit and is used for transmitting the input light field to an imaging surface; the spatial variable polarization modulation element is arranged on a conjugate surface of the point light source relative to the imaging unit and is used for performing spatial variable polarization modulation to obtain a modulated light field; and the image space polarization filtering unit is arranged between the space variable polarization modulation element and the imaging surface and is used for screening the modulated light field to obtain a light field in a specific polarization direction, and the light field in the specific polarization direction forms an edge enhanced imaging light field on the imaging surface. The invention also relates to a preparation method of the edge enhancement imaging system. The device has the advantages that the imaging effect of edge enhancement in any direction or all directions is achieved, a common microscope imaging system can be compatible, phase modulation is achieved through polarization state transformation, and sensitivity to wavelength is reduced.