2463 results about "Polarised light" patented technology

The invention relates to the technical field of polaroid performance optimization, and discloses a performance optimization design method and system for a multi-layer composite polaroid, and the method comprises the steps: carrying out the polarization spectrum analysis of a use environment of a display screen, obtaining incident polarization spectrum data, and calculating the initial stretch ratio data of each polarization layer; measuring to obtain molecular orientation degree data and polarization performance data of each polarization layer; performing feature extraction and fusion to obtain a fusion feature vector of each polarization layer; calculating the influence of the molecular orientation degree change of each polarized light layer on the optical performance of different polarization states to obtain the importance weight of the polarization state of each polarized light layer; reinforcement learning optimization is carried out, and a stretch ratio adjustment strategy of each polarization layer is generated; according to the technical scheme, multi-objective optimization and sequential quadratic programming are carried out on the processing parameters of each polarizing layer, and the stretching temperature and speed control sequence of each polarizing layer is generated, so that the precise control of the stretching temperature and speed is realized, and the performance index and the production efficiency of the polaroid are improved.

The invention discloses a rock slice mineral identification method, a medium and equipment, and relates to the technical field of mineral identification, the method comprises the following steps: obtaining single polarized light images and orthogonal polarized light images of a rock slice under a plurality of polarized light angles, and carrying out image labeling to obtain a label image set; a rock slice mineral recognition model is constructed based on a U-Net architecture, the left part of the rock slice mineral recognition model of the U-Net architecture is connected with five feature extraction blocks through four downsamples, each feature extraction block is formed by connecting a convolution and a Swing-Transform Stage, and features are output by the Swing-Transform Stage; and training and testing the model by using the label image set, and inputting a to-be-detected rock slice image into the trained model to obtain a mineral segmentation result. According to the scheme of the invention, the method is high in recognition capability for complex mineral images under polarized light of different angles.

The present invention discloses an optical module with adjustable polarization, which can be generically assembled in a lamp body assembly. The optical module with adjustable polarization includes a polarization lens body, and a hollow first cylinder and a second cylinder. One end of the first cylinder is detachably and rotatably connected to one end of the second cylinder. The polarization lens body is rotatably arranged in the inner cavity of the first cylinder. The polarization lens body is provided with a guiding and positioning portion at the edge perpendicular to the rotation axis. The second cylinder is provided with an inclined guiding slot hole, and the guiding and positioning portion is slidably connected with the guiding slot hole. The second cylinder is provided with a first engaging portion for detachably and rotatably connecting with the lamp body assembly. The present invention utilizes the first engaging portion on the second cylinder to assemble the optical module on the lamp body assembly, so that by rotating the first cylinder and the second cylinder, the polarization lens body can be deflected and rotated, enabling the light to be deflected by the polarization lens body and changing the irradiation angle, thereby realizing the adjustment of polarization in a limited space and completing the change of optical effects.

The invention provides a visual system, which comprises an element group and a lens cone group, when the diopter of the visual system is from + 2D to-5D, the moving distance delta L of the second element group along the optical axis, the combined focal length fz1 of the reflective polarizing element, the first quarter-wave plate and the first lens, and the combined focal length fz2 of the second lens, the second quarter-wave plate and the polarizing film meet the condition that delta L * (fz1 / fz2) is greater than or equal to 0.90 mm and less than or equal to 1.82 mm; and the maximum thickness Lb from the first side surface of the second lens barrel to the second side surface of the second lens barrel along the direction of the optical axis, the outer diameter Dbs of the first side surface of the second lens barrel and the inner diameter dbs of the first side surface of the second lens barrel meet the condition that Lb / (Dbs-dbs) is more than or equal to 0.56 and less than or equal to 2.36. The problem that smooth zooming and image quality improvement of a visual system in the prior art are difficult to consider at the same time is solved.

The invention provides a display device and a manufacturing method thereof, the display device comprises a supporting layer, an adhesive layer, a protective film, a display panel, a polarizing layer, an optical adhesive layer and a cover plate which are sequentially stacked, and the supporting layer is a composite material layer formed by hot pressing of a metal layer and a carbon fiber layer; according to the flexible module, the supporting layer is arranged to be the composite material layer of the metal layer and the carbon fiber layer, the surface flatness of the flexible module can be improved, and meanwhile due to the fact that the rigid material such as the metal layer is added, the front face impact resistance of the module can be improved; the thickness of one adhesive layer can be removed, the purpose of module thinning is achieved, the composite adhesive force between the metal layer and the carbon fiber layer is better than the effect that the metal layer and the carbon fiber plate are assembled through single body attachment, and the risk of module stripping can be reduced. According to the display device and the manufacturing method thereof, the structure is simple, manufacturing is convenient, stability is high, cost is low, the product weight can be effectively reduced, and meanwhile the display effect is improved.

The invention provides a VR visual system, the VR visual system comprises an element group and a lens cone group, the element group sequentially comprises a first element group and a second element group from a first side to a second side along an optical axis of the VR visual system, the second element group can move along the direction of the optical axis, the combined focal length fz1 of the reflective polarizing element, the first quarter-wave plate and the first lens and the inner diameter dam of the second side surface of the first lens barrel meet the condition that fz1 / dam is more than or equal to 1.60 and less than or equal to 2.66; and the outer diameter Dbs of the first side surface of the second lens cone, the inner diameter dbs of the first side surface of the second lens cone and the distance delta L of the second element group moving along the optical axis when the diopter of the VR visual system is from + 2D to-5D meet the following condition: (Dbs-dbs) / delta L is greater than or equal to 2.63 and less than or equal to 7.45. The VR visual system solves the problem that a VR visual system in the prior art is large in diopter adjustment range and is difficult to consider the structural stability at the same time.

The invention provides a liquid crystal optical flow control chip, an optical imaging device and application, the liquid crystal optical flow control chip comprises a substrate, the substrate is provided with a closed microstructure, the microstructure comprises a plurality of sample pools and a plurality of optical pools, and the sample pools and the optical pools are the same in number and are in one-to-one correspondence; each sample cell is communicated with one optical cell corresponding to the sample cell through a micro-mixing channel; each sample cell is provided with an inlet / outlet pipeline I, and each optical cell is provided with an inlet / outlet pipeline II; the micro-mixing channel comprises a first channel and a second channel which are communicated with each other, and the first channel is provided with a sample introduction pipeline. The liquid crystal optical flow control chip and the optical imaging device are developed on the basis of an adapter conformation change principle in combination with liquid crystal birefringence performance, different liquid crystal optical morphologies of a sample on the liquid crystal optical flow control chip are observed through a polarizing microscope, and then the purpose of detecting exosomes in the sample is achieved. The kit has the advantages of high throughput, rapid detection and high sensitivity.

The invention relates to the technical field of magnetometers, and provides a photoelectric signal conversion system of a magnetometer. The photoelectric signal conversion system of the magnetometer comprises an optical lens group, a photoelectric signal conversion module and a photoelectric signal conversion module, which are sequentially arranged along a light propagation direction, wherein the optical lens group is used for carrying out light path adjustment on laser; the quarter-wave plate is used for converting the laser subjected to light path adjustment into circular polarized light from linear polarized light; the coil and the atomic gas chamber are used for receiving the circular polarized light, and the circular polarized light and alkali metal atoms in the atomic gas chamber interact in the superimposed magnetic field to form transmission light containing magnetic resonance information; the variable-focus lens group is used for performing variable-focus focusing on the transmission light; and the photoelectric detector is used for converting the focused transmission light into a voltage signal and outputting the voltage signal so as to determine the current environment magnetic field according to the voltage signal.

The invention discloses an alanine aminotransferase detection device and method based on a liquid crystal microcavity array, and belongs to the field of optical sensing. The device comprises a functional liquid crystal microcavity array, an excitation optical fiber and a collection optical fiber, the microcavity array is composed of liquid crystal microcavities doped with fluorescent dye and stearic acid, and the multiple microcavities are independently distributed and serve as optical sensing units; the excitation optical fiber is used for synchronously exciting the microcavity to generate an echo wall mode, and the acquisition optical fiber acquires resonance spectrum signals of each channel in real time; the functionalized liquid crystal microcavity is converted into a bipolar configuration from a radial configuration in an enzymatic reaction, echo wall mode spectrum red shift is caused, spectrum shift time is in negative correlation with enzyme concentration, and dual-channel detection is realized by matching with conversion time of a polarized light pattern. According to the detection structure based on the liquid crystal microcavity array provided by the invention, high-flux, real-time and label-free rapid detection on the concentration of alanine aminotransferase can be realized.

The embodiment of the invention provides a dimming module, a dimming device and a dimming structure, relates to the technical field of dimming and is used for improving the dimming effect of the dimming module, and the dimming module comprises a first base material layer, a second base material layer, a dye liquid crystal layer and a polarization layer. The first substrate layer is provided with a first optical axis; the second base material layer and the first base material layer are oppositely arranged; the second substrate layer is provided with a second optical axis; the dye liquid crystal layer is positioned between the first base material layer and the second base material layer; the polarizing layer is located between one of the first base material layer and the second base material layer and the dye liquid crystal layer; a first included angle is formed between the polarization direction of the polarization layer and at least one first optical axis, and the first included angle is larger than 0 degree and smaller than 90 degrees; a second included angle is formed between the polarization direction of the polarization layer and the at least one second optical axis, and the second included angle is larger than 0 degree and smaller than 90 degrees. The dimming module is used for adjusting the light transmittance.

The embodiment of the invention provides a testing device of a silicon-based photoelectric integrated chip, the silicon-based photoelectric integrated chip and a testing method of the silicon-based photoelectric integrated chip, and belongs to the technical field of chip testing. The test device comprises a tunable polarization-maintaining light source configured to output polarization-maintaining light; the first optical coupling link comprises a first polarization-maintaining optical splitter allowing polarization-maintaining light to pass through, an optical power meter, a single-channel array and an input port of a silicon-based photoelectric integrated chip; the second optical coupling link comprises a second polarization-maintaining optical splitter allowing polarization-maintaining light to pass through, at least two polarization-maintaining optical circulators, an optical power meter, a multi-channel array and at least two polarization-maintaining light output ports of a silicon-based photoelectric integrated chip; and the 1 * 2 polarization-maintaining optical switch is configured to switch polarization-maintaining light between the first optical coupling link and the second optical coupling link. According to the testing device, time domain multiplexing of optical path coupling and parameter measurement in the same optical path system is achieved, and alignment of a chip port and an optical fiber array and evaluation of chip performance parameters are completed at a time.

The invention relates to a lithology identification method based on rock slice single polarized light image and orthogonal polarized light image feature fusion, and the method comprises the steps: S1, collecting a rock slice single polarized light image and an orthogonal polarized light image, carrying out the preprocessing, carrying out the lithology marking, and building a rock image data set; s2, constructing a lithology identification model, including taking WTConvNeXt-Inception as a backbone network to extract features, performing feature fusion of a single polarized light image and an orthogonal polarized light image by a cross attention mechanism, and classifying the spliced features; and S3, inputting a rock image to be identified into the trained lithology identification model, and outputting a lithology identification result. Aiming at the problem of low lithology identification accuracy, the invention proposes the feature fusion of the single polarized image and the orthogonal polarized image to establish a lightweight model, realizes the rapid, accurate and full-automatic identification of the rock slice image, and effectively improves the lithology identification accuracy.

The invention relates to a temperature test and evaluation system for a polarization-maintaining optical path assembly of a fiber-optic gyroscope. The polarization-maintaining light path assembly and the test tool thereof are placed in a temperature box with a vibration isolation foundation. Other optical devices and a gyro circuit are arranged outside the incubator. And the power box, the fiber-optic gyroscope and the acquisition equipment are electrically connected through the test cable. Before the temperature test, the output of the normal-temperature fiber-optic gyroscope is electrified and monitored, the acquisition time is set, the mean value and the standard deviation of normal-temperature output data are calculated, and the temperature test can be started after the requirements are met. And according to the full-temperature output data, calculating extreme values and standard deviations before and after temperature compensation to jointly form evaluation indexes of the polarization-maintaining optical path assembly. According to the system disclosed by the invention, the full-temperature zero-bias stability qualification rate is improved after the fiber-optic gyroscope product is compensated.

The invention relates to an optical film, a polaroid and a display device. The optical film comprises a base material layer and a depolarization function layer located on one side of the base material layer. The depolarization functional layer comprises at least one main body layer and birefringent particles dispersed in the at least one main body layer; wherein the included angle between the slow axis direction of the birefringent particles and the rolling direction of the base material layer is larger than or equal to 35 degrees and smaller than or equal to 55 degrees; when linearly polarized light enters the optical film, the linearly polarized light is converted into circular polarized light and / or elliptical polarized light by the depolarization function layer. The depolarization effect can be achieved through the method which is simpler in manufacturing process, lower in cost and higher in yield, and therefore the eye protection effect is achieved.

The invention discloses a display module, a manufacturing method and a display device. The display module of one embodiment comprises a display area, a non-display area at least partially surrounding the display area, a bending area connected with one end of the non-display area and a binding area connected with the bending area. The display module comprises a substrate. The display light-emitting layer is located on the substrate of the display area; the wiring layer is located on the substrate in the non-display area, the bending area and the binding area, and the wiring layer is electrically connected with the display light-emitting layer; the polarization layer is positioned on one side, far away from the substrate, of the display light-emitting layer; the protection layer is positioned on one side, far away from the substrate, of the wiring layer in the bending area; the protective layer is provided with a binding area, the driving chip is bound with the binding area, the extension direction of the binding boundary of the binding area and the driving chip is a first direction, and the orthographic projection of the protective layer on the substrate comprises a plurality of projection blocks at intervals in the first direction.

A dual-polarization (DP) intensity-modulated direct detection (IMDD) receiver includes an input port configured to receive input light; an optical polarization splitter configured to split the input light into a pair of optical transmission paths; a pair of photodetectors including (i) a first photodetector configured to detect light at a first carrier frequency and output an electrical signal into a first electrical transmission path, (ii) a second photodetector configured to detect light at a second carrier frequency and output an electrical signal into a second electrical transmission path, wherein the first carrier frequency and the second carrier frequency are separated by a frequency difference; and an electrical 2×2 multi-input-multi-output (MIMO) polarization demultiplexer configured to input the first electrical transmission path and the second electrical transmission path and perform electrical 2×2 MIMO polarization demultiplexing to output a first demultiplexed signal and a second demultiplexed signal.

The utility model relates to an LCOS (Liquid Crystal On Silicon) projection device, which comprises a light source module capable of emitting red, green and blue light beams, a polarization filter and an imaging lens which are sequentially arranged along a projection light path, an LCOS chip capable of modulating the polarization state of incident light is arranged on a projection light path between the polarization filter and the imaging lens, and an imaging lens group capable of imaging the incident light onto the LCOS chip is arranged on a projection light path between the light source module and the polarization filter. And a polarization layer capable of transmitting P polarized light and reflecting S polarized light is arranged on the polarization filter. Compared with a polarizing prism applied to a traditional LCOS projection light path, the LCOS projection light path has the advantages that through the arrangement of the polarizing filter and the polarizing layer which is arranged on the polarizing filter and can transmit P polarized light and reflect S polarized light, the LCOS projection light path has higher polarization efficiency, stray light is reduced, and optical efficiency is improved.

Provided are a display substrate, a method for manufacturing a display substrate and a display apparatus. The display substrate includes a base, a drive structure layer disposed on the base, a light emitting element disposed on the drive structure layer, an encapsulation layer disposed on the light emitting element, a circular polarizer layer disposed on the encapsulation layer, and a lens definition layer and a lens structure layer disposed on the circular polarizer layer. The light emitting element includes a pixel definition layer provided with a plurality of sub-pixel openings; the lens structure layer includes a plurality of lenses disposed at intervals, the lens definition layer is disposed in a gap region between adjacent lenses, and an orthographic projection of each lens on the base contains an orthographic projection of a sub-pixel opening on the base.

The invention provides a display module and a display device.The display module comprises a display panel, a polarization layer and a protection layer, the display panel comprises a display area and a frame area arranged on one side of the display area, the frame area comprises a first sub-frame area and second sub-frame areas arranged on the two sides of the first frame area, the polarization layer is arranged on the light emitting side of the display panel, and the protection layer is arranged on the light emitting side of the display panel. The protection layer is partially arranged on the first sub-frame area, and the orthographic projection of the protection layer on the display panel is not overlapped with the second sub-frame area, so that the protection layer is prevented from blocking a path through which static electricity enters an interface between the polarization layer and the display panel, and a large amount of static electricity is prevented from being accumulated at the second sub-frame area; therefore, the situation that the two sides of the frame area of the display panel emit light abnormally can be improved.

A polarizing microscope (1) is provided with: a sample stage (4) on which a sample (8) is placed; a polarizer (3) provided on the light source side of the sample (8); and an analyzer (6) provided on the observation side of the sample (8). At least one of the polarizer (3) and the analyzer (6) is provided such that the polarization direction is inclined with respect to the optical main axis of the sample (8), or such that the included angle between the polarization direction of the analyzer (6) and the polarization direction of the polarizer (3) deviates from a right angle.

The utility model discloses a visual system which comprises a lens cone, a lens group and a spacing element group, wherein the lens group and the spacing element group are assembled in the lens cone; the lens group comprises a first lens with positive focal power, a reflective polarization element, a first quarter-wave plate, a second lens with positive focal power, a third lens with negative focal power, a partial reflection element and a second quarter-wave plate which are sequentially arranged from the first side to the second side along the optical axis. The fourth lens has negative focal power; the spacing element group comprises a first spacing element, a second spacing element, a third spacing element and a fourth spacing element; wherein the number of the lenses with focal power in the lens group is four; the effective focal length f1 of the first lens and the effective focal length f of the visual system satisfy 1.5 lt; f1 / flt; 1.9); the combined focal length FG1 of the first lens, the reflective polarizing element and the first quarter-wave plate and the inner diameter d1s of the first side surface of the first spacing element meet the following conditions: 2.35 lt; fG1 / d1slt, FG1 / d1slt; and 2.75%.

The invention provides a visual system. The visual system comprises a lens cone, a lens group and a spacing element group, the lens group and the spacing element group are arranged in the lens cone, and the lens group is composed of four lenses, a polaroid, a reflective polarizing element, a quarter-wave plate and a reflective element. The four lenses are sequentially a first lens with positive focal power, a second lens with negative focal power, a third lens with negative focal power and a fourth lens with positive focal power from the first side to the second side; f23 / d3s is more than or equal to-9.75 and less than or equal to-8.72; f / (CP1 + EP13) is more than 5.00 and less than 5.40. The problem that stray light is serious due to the fact that a four-piece type visual system in the prior art is provided with a bonding lens and a reflecting part to meet the requirement for structure compactness is solved.

The utility model discloses an optical imaging system. The optical imaging system comprises a lens cone, an imaging group and a second spacing element, wherein the imaging group and the second spacing element are arranged in the lens cone. The imaging group sequentially comprises a linear polarization film, a reflective polarization element, a quarter-wave plate, a first lens, a second lens, a third lens, a fourth lens and a partial reflection layer from the first side to the second side along the optical axis; wherein the first lens and the second lens are glued, and the third lens and the fourth lens are glued. The second spacer element is disposed on the second side of the second lens and is in contact with the second side of the second lens. Wherein the outer diameter D0m of the second side end face of the lens barrel and the outer diameter D2m of the second side face of the second spacing element meet the condition that D0m-D2m is larger than or equal to 4.51 mm and smaller than or equal to 5.8 mm; the inner diameter d2m of the second side surface of the second spacing element, the inner diameter d2s of the first side surface of the second spacing element, and the axial distance T23 from the second side surface of the second lens to the first side surface of the third lens satisfy the following formula: (d2m-d2s) / T23 is greater than or equal to 0.97 and less than or equal to 2.79.

The invention discloses an optical imaging system. The optical imaging system comprises a lens cone, an imaging group and a second spacing element, wherein the imaging group and the second spacing element are arranged in the lens cone. The imaging group sequentially comprises a linear polarization film, a reflective polarization element, a quarter-wave plate, a first lens, a second lens, a third lens, a fourth lens and a partial reflection layer from the first side to the second side along the optical axis; wherein the first lens and the second lens are glued, and the third lens and the fourth lens are glued. The second spacer element is disposed on the second side of the second lens and is in contact with the second side of the second lens. Wherein the outer diameter D0m of the second side end face of the lens barrel and the outer diameter D2m of the second side face of the second spacing element meet the condition that D0m-D2m is larger than or equal to 4.51 mm and smaller than or equal to 5.8 mm; the inner diameter d2m of the second side surface of the second spacing element, the inner diameter d2s of the first side surface of the second spacing element, and the axial distance T23 from the second side surface of the second lens to the first side surface of the third lens satisfy the following formula: (d2m-d2s) / T23 is greater than or equal to 0.97 and less than or equal to 2.79.

To provide a more suitable aerial floating video display device, contributing to sustainable development goals (SDGs) 3 "Good Health and Well-Being," 9 "Industry, Innovation and Infrastructure," and 11 "Sustainable Cities and Communities."SOLUTION: An aerial floating video display device for displaying an aerial floating video comprises: a first display device for emitting video light; a second display device; a retroreflection member for reflecting the video light from the first display device and forming an aerial floating video in the air by reflected light; a λ / 4 plate provided to the retroreflection member; and a polarization-separation member for passing the video light of prescribed polarization emitted from the first display device through toward the retroreflection member and reflecting polarized wave video light having been retroreflected after entering the retroreflection member and polarization converted by being passed through the λ / 4 plate. The second display device is located on the back side of the aerial floating video as seen from a user, and has a member installed therein that mitigates unwanted video light in viewing the aerial floating video.SELECTED DRAWING: Figure 3

The invention relates to the technical field of process minerals, in particular to a metal mineral X-ray plate image mineral composition segmentation method based on improved yov8n, which comprises the following steps: S1, shooting a metal mineral X-ray plate image through a polarizing microscope, and accurately marking by using Label software; and S2, a small target detection layer and an SCConv module are added on the YOLOv8n, and a ContextAggregation attention mechanism is introduced at the same time, so that the detection capability and feature extraction of a small target can be enhanced. S3, performing multiple rounds of training by using an improved YOLOv8n model, adjusting a learning rate and refining training parameters, calling and outputting a trained weight file, and completing segmentation of mineral components of the metal mineral X-ray plate image; and S4, through performance comparison with other models, evaluating the model by using an average precision mean value (Map at 0.5) and an actual segmentation effect picture. The problems of common misrecognition and low average precision (Map at 0.5) during fine-particle-size mineral processing by a traditional segmentation method are effectively solved, and the Map at 0.5 of an improved model is improved by 6.75%.

A laser processing apparatus including a laser light source, a polarizing beam splitter, a first reflective mirror, a second reflective mirror, and a polarizing beam combiner is disclosed. The laser light source is configured to generate a laser light. The polarizing beam splitter is configured to divide the laser light into a first beam and a second beam. The first reflective mirror is configured to reflect the first beam. The second reflective mirror is configured to reflect the second beam. The polarizing beam combiner is disposed on a path of the first beam reflected by the first reflective mirror and on a path of the second beam reflected by the second reflective mirror. An optical axis of the polarizing beam combiner is not parallel to the first beam. The polarizing beam combiner is configured to guide the first beam and the second beam.

To provide an augmented reality display device with an enhanced sense of realism of display images.SOLUTION: An augmented reality display device causes a user to visually recognize first and second images at different distances in a state where a real environment can be visually recognized. The augmented reality display device includes: a display panel that emits polarized lights for the first and second images; a surface-divided polarization conversion member arranged at a position where the polarized lights enter; and an optical element and a concave half mirror arranged at a position where the polarized lights transmitted through the surface-divided polarization conversion member enter. The surface-divided polarization conversion member has, in a plan view, a first transmissive portion that transmits the polarized light for the first image and a second transmissive portion that transmits the polarized light for the second image and causes a phase difference different by λ / 2 from that caused by the first transmissive portion. The optical element makes a virtual image distance of the first image generated from the first polarized light transmitted through the first transmissive portion different from a virtual image distance of the second image generated from the second polarized light transmitted through the second transmissive portion.SELECTED DRAWING: Figure 7

The invention discloses an image acquisition method and system for a dual-wavelength circular polarization camera, and the method comprises the steps: setting two independent nanosecond pulse laser sources, and respectively transmitting lasers with different wavelengths; respectively carrying out left-hand circular polarization and right-hand circular polarization treatment on the two lasers; integrating the two nanosecond pulse laser beams subjected to circular polarization treatment into one beam, wherein the two beams are completely overlapped and are coaxial; the integrated nanosecond pulse laser beams are irradiated to a target object, and reflected light is collected through a double-spectrum camera to form two images with different wavelengths; and distributing weights for the image according to the importance of the polarization information, and generating a comprehensive image by adopting an image fusion technology. According to the image acquisition method and system of the dual-wavelength circular polarization camera, two independent nanosecond pulse laser sources are arranged to emit short-wavelength laser and long-wavelength laser respectively, the two beams of laser are subjected to left-handed and right-handed circular polarization processing and then integrated into one beam, and efficient imaging in a complex environment is achieved.