533 results about "High luminance" patented technology

The invention discloses an optical lens which is sequentially arranged from an object side to an image side along an optical axis of the lens: a first lens which is a glass lens with negative focal power; the second lens has negative focal power; the third lens is provided with positive focal power; a fourth lens, wherein the fourth lens has positive focal power or negative focal power; an aperture stop; a fifth lens, wherein the fifth lens has a positive focal power or a negative focal power; a sixth lens having a positive focal power or a negative focal power; a seventh lens having a positive focal power or a negative focal power; and the eighth lens is a plastic lens with positive focal power or negative focal power. The lens is formed by mixing glass and plastic, the field angle is larger than or equal to 200 degrees, the aperture is larger than or equal to 1.9, and the lens has the advantages of being large in field of view, large in aperture, high in imaging quality and high in brightness.

The invention relates to the technical field of fishing boat monitoring, in particular to an AI camera-based fishing information acquisition system for a lamplight cover net fishing boat, which comprises a reflective point extraction module, a track fitting module, a shielding classification module, an edge redrawing module and a density analysis module. The method comprises the following steps: extracting reflective points on the surface of an underwater fish body, screening a high-brightness area, constructing a gloss response point set, analyzing a motion track of a reflective point group in combination with a multi-frame image sequence, fitting path features by adopting a random sampling consistency algorithm, and identifying a track continuity state and a motion mode change. And performing shielding state classification on the path features based on a support vector machine model, judging extension shielding, cross shielding or boundary separation types, performing direction vector alignment and path matching redrawing on the edge contours of the reflective points according to a classification result, and recovering contour missing caused by shielding. And multi-granularity data support is provided for fish catch statistics by analyzing a brightness change track of a fin ray region in a redrawn edge path.

The invention discloses a low-illumination image enhancement method suitable for a complex night operation scene. The method comprises the following steps: preprocessing a collected low-illumination RGB image to obtain a preprocessed image; multi-scale features are extracted from the shallow convolution projection and the multilayer axial converter unit, and cross-layer attention is used for weighted aggregation to form enhanced features; forward noise addition is executed according to noise scheduling to obtain potential representation representing low-illumination noise distribution, and deep semantic representation is extracted in combination with a U-Net encoder embedded in CBAM; in the decoding stage, details are reconstructed through jump connection and a multi-layer converter, meanwhile, reverse denoising of a diffusion model is introduced to gradually remove noise, and an enhanced image with high brightness and low noise is output; in the training process, bidirectional mapping from low illumination to normal illumination is constructed, a weighted target of self-encoding loss and enhanced loss is introduced to carry out joint optimization on a converter and diffusion parameters, and a low-illumination scene is monitored on a general GPU / edge device.

The invention relates to the technical field of tunnel lighting, in particular to a tunnel portal lighting control method and system, and the method comprises the steps: S1, obtaining a first image in a short exposure time mode; obtaining a second image in a long exposure mode; s2, synthesizing the second image and the first image into a high-dynamic-range image, and dividing the high-dynamic-range image into a low-brightness area, a transition area and a high-brightness area; s3, generating a brightness transition curve of the transition area; s4, determining a brightness adjusting curve of the transition area according to the maximum brightness of the tunnel portal and the light and shade adaptive pupil area change rate; s5, determining the target brightness of each part of the transition area according to the brightness transition curve and the brightness adjustment curve; and S6, adjusting the brightness of the illumination lamp in the transition area to enable the brightness of each part of the transition area to reach the target brightness. The target brightness is determined according to the brightness transition curve in combination with the brightness adjustment curve, the influence of the brightness adaptive pupil area change rate on the sight line is fully considered, and the change of the brightness of the tunnel portal is more adaptive to the function of human eyes.

The invention relates to the technical field of intelligent detection of power equipment, in particular to a complex illumination low-voltage electricity meter frequency sensing detection method, system and equipment and a medium, and aims to solve the problems of high-frequency noise interference, intra-class feature difference, insufficient edge end energy efficiency and the like existing in electricity meter detection in a high-brightness environment. Proposing a dynamic frequency domain compensation mechanism to suppress light noise and recover signal details, and optimizing dense scene feature consistency in combination with adaptive filtering and a multi-scale sampling strategy; the boundary fuzzy problem is solved through dynamic feature alignment and an edge compensation mechanism, and parallel acceleration of frequency domain decomposition and dynamic resampling is realized by adopting a heterogeneous hardware architecture; a multi-modal data training framework and a cross-domain transfer learning strategy are fused to enhance the generalization ability of the model; according to the invention, collaborative optimization of detection precision, real-time performance and low power consumption is realized in a complex illumination scene, and high-robustness technical support is provided for intelligent power grid inspection.

The invention discloses a laser speckle testing device based on hyperspectral imaging, which realizes high-precision measurement of laser spots and speckle signals under the condition of not depending on an expensive refrigerating system by optimizing an optical structure and a control strategy. The device comprises an imaging lens, a lens electric control module, a liquid crystal tunable optical filter module, an ND filter wheel, a driving mechanism of the ND filter wheel, a two-dimensional image sensor, a main control unit, a three-axis acceleration sensor, a PC host and a tested screen. A noise calibration piece preset in an ND filter wheel is used for collecting noise data in real time before each time of measurement, and noise deduction is carried out before the filter is switched, so that the timeliness and accuracy of data correction are improved; meanwhile, the integrated three-axis acceleration sensor is used for monitoring vibration, and when vibration exceeding a preset threshold value is detected, it can be judged that currently collected data is invalid, and re-collection is automatically triggered. The device is compact in structure, low in cost and suitable for the fields of laser display, projection calibration, high-brightness light source detection and the like.

The invention provides an automatic tracking laser bird repelling barrier lamp which comprises a lamp body and a detecting, tracking and repelling module, and a barrier warning module is arranged in the lamp body and can emit high-brightness flashing signals meeting safety standards. The detection tracking driving module is integrated with a millimeter-wave radar and a visible light camera, the millimeter-wave radar collects target distance, speed and azimuth information in real time, and the visible light camera carries an AI bird recognition algorithm to recognize and position birds; the intelligent control unit fuses multi-source data through extended Kalman filtering, predicts the future motion trail of a target based on a Kalman filtering model, drives the servo holder to adjust the laser emission direction, and meanwhile, automatically adjusts the diameter of a laser beam spot through the focusing lens group according to the target distance to ensure that the energy density at different distances maintains an effective driving threshold value. The device adopts a multi-modal fusion detection technology to cooperate with a dynamic tracking algorithm, has the functions of obstacle warning and intelligent bird repelling, is suitable for scenes such as towers, building tops, airports and the like, and realizes efficient safety protection in a complex environment.

The utility model provides an all-glass vehicle-mounted day and night confocal optical system and a camera module applying the same, mainly comprising eight lenses, the first lens has negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface, the second lens has negative focal power, the object side surface is a concave surface, and the image side surface is a convex surface. The third lens has positive focal power, the object side surface is a convex surface, the image side surface is a concave surface, the fourth lens has negative focal power, the object side surface is a convex surface, the image side surface is a concave surface, the fifth lens has positive focal power, the object side surface is a convex surface, the image side surface is a convex surface, and the fourth lens and the fifth lens form a bonding lens. The sixth lens has positive focal power, the object side face of the sixth lens is a convex face, the image side face of the sixth lens is a convex face, the seventh lens has negative focal power, the image side face of the seventh lens is a concave face, the eighth lens has focal power, and the image side face of the eighth lens is a concave face. And the picture illumination uniformity and the imaging definition are improved.

The invention relates to the technical field of medical instrument detection, discloses a medical whole basket instrument multi-parameter detection system and method, and aims to solve the problem that in an existing CCD image detection technology, a high-brightness reflection area interferes with a detection result due to tiny bloodstain or superposition on the surface of an instrument. The system comprises an imaging module, a light source control module, a data processing module and a carrying platform. According to the method, reflection is reduced through combination of multispectral imaging and an adjustable light source, a reflection area is accurately identified and removed by using an algorithm of combining gradient amplitude and gradient direction entropy, and finally geometric parameters and cleanliness indexes of the instrument are synchronously calculated.

The invention provides a marine radar oil film extraction method and system based on an improved South goose algorithm, and relates to the technical field of image processing. According to the technical key points, the method comprises the following steps: firstly, preprocessing an obtained radar oil film image; then, feature extraction is carried out on the preprocessed image, an oil film region of interest is generated, interference of high-brightness clutters is effectively removed in combination with an SIFT feature filtering algorithm based on an intensity threshold value, and the oil film region of interest better fitting the actual shape of an oil film is generated through region expansion and boundary smoothing processing; then, an improved South goose algorithm is utilized to carry out segmentation extraction on the preprocessed image, the improved South goose algorithm effectively avoids a local optimum problem, a higher convergence speed is realized, and a more stable segmentation effect is further realized based on an optimal threshold obtained by solving; and finally, performing fusion processing on the oil film region of interest and the segmented and extracted image to obtain an oil film image. The precision of oil film extraction is improved.

The invention provides in embodiments a light generating system (1000) comprising a first light generating device (100), a first luminescent material (210), and a second luminescent material (220), wherein: A) the first light generating device (110) is configured to generate first device light (111), wherein the first light generating device (110) comprises a first light source (10) selected from the group of a superluminescent diode and a laser; B) the first luminescent material (210) comprises a line absorber and line emitter luminescent material providing a first luminescent material emission (211) comprising a line emission at a first wavelength (λL,1) upon excitation with the first device light (111); C) the second luminescent material (220) comprises a broad band emitter luminescent material providing a second luminescent material emission (221) comprising a broad band emission upon excitation with the first device light (111), wherein the second luminescent material emission (221) has a second centroid wavelength (λLC,2), wherein |λL,1-λLC,2|≤20 nm; D) the first light generating device (110) is configured to pump one or more of the first luminescent material (210) and the second luminescent material (220) with the first device light (111); and E) the light generating system (1000) is configured to generate system light (1001) comprising one or more of the first luminescent material emission (211) and the second luminescent material emission (221).

The invention provides a steel surface defect detection and identification system and method based on a deep learning YOLOv8 model, and the system comprises an industrial camera which is disposed in a to-be-detected region of a steel production line and is provided with a high-brightness light source. The system is characterized by further comprising an image acquisition module, a fault detection module, a defect identification module and a man-machine interaction module which run on a computer and are connected with the industrial camera control system, and the method comprises the following steps: S1, system initialization, S2, image acquisition, S3, image preprocessing, S4, feature extraction and fusion, S5, defect identification and classification, and S6, result output and interaction. Automatic and precise steel surface defect detection and recognition of the whole process from image acquisition, defect detection to result output are achieved, manual visual judgment is not needed, detection standards are unified, the problem of unstable detection caused by manual experience differences is avoided, the labor intensity of operators is reduced, enterprise losses caused by defective steel circulation are avoided, and the production efficiency is improved. Reliable data support is provided for production process optimization, and the steel quality is guaranteed.

According to the silicon-based OLED micro display screen, an OLED organic material layer emits white light under electric driving, intelligent judgment is performed according to display content, an optimal working mode is automatically selected, when high-saturation pure color needs to be displayed, the mode is switched to a pure color transparent mode, at the moment, a super-surface optical separation layer keeps the transparent characteristic, and the display quality is improved. The white light is directly transmitted to the color film unit with the corresponding color; when mixed colors need to be displayed, a mixed color separation mode is started, incident white light is separated into red primary light, green primary light and blue primary light according to visible spectrums, the light is accurately guided to the corresponding RGB color film units according to a preset optical path, finally, the color light which is accurately separated and guided is output through the corresponding color films, and finally a high-brightness and low-power-consumption full-color picture is synthesized. The super-surface optical separation layer is additionally arranged between the white light OLED light-emitting layer and the color filter, so that the display optical utilization efficiency is greatly improved.

The embodiment of the invention provides a large-viewing-angle composite optical film. The large-viewing-angle composite optical film comprises a base material film layer; the first prism film layer is arranged on one side of the base material film layer; the second prism film layer is arranged on the other side of the base material film layer; a plurality of first prism units extending in the first direction are arranged on the side, close to the base material film layer, of the first prism film layer, and a platform interval is formed between every two adjacent first prism units; a plurality of second prism units extending along a second direction are arranged on one side, adjacent to the base material film layer, of the second prism film layer; wherein the first direction intersects with the second direction, and the first prism units and the second prism units are oppositely arranged in the direction perpendicular to the base material film layer. The utilization rate of light energy is improved, and the loss of central brightness is effectively inhibited while the visual angle is obviously expanded. After the first prism film layer and the second prism film layer are compounded, on the basis of maintaining high brightness gain, the field angle is obviously widened, and collaborative optimization of brightness attenuation gentle and overall optical uniformity under a large angle of view is realized.

An HUD system and a vehicle are used for improving the brightness of a user watching a virtual image. The HUD system comprises an image generation assembly, an optical deflection assembly and a first reflection assembly, the optical deflection assembly is arranged on a light path between the image generation assembly and the first reflection assembly, the image generation assembly is used for generating an image, and the optical deflection assembly is used for deflecting the propagation direction of light from the image generation assembly. The first reflection assembly is used for reflecting the deflected light from the optical deflection assembly, so that a reverse extension line of the reflected light forms a virtual image at a first position outside the windshield. In the HUD system, the optical deflection assembly can deflect the direction of the light rays emitted by the image generation assembly, so that the light rays with relatively high light intensity can be controllably transmitted to the first reflection assembly and then are reflected to human eyes by the first reflection assembly to ensure that relatively bright virtual images can be watched at the human eyes; therefore, high-brightness cabin display experience is provided for the user.

The invention provides an infrared induction intelligent interactive projection large screen and ground screen holographic device, and relates to the technical field of intelligent display interaction. The equipment is composed of a large projection screen, a ground screen, an infrared induction device, a data processing host, a feature extraction and intention recognition module, an environment perception and adaptive adjustment module and an intelligent feedback and multi-mode interaction fusion module, and the large projection screen is used for displaying holographic images and has the functions of high brightness, wide color gamut and touch control; the ground screen is made of a transparent holographic imaging material, can synchronously display interaction information and has a touch sensing function, and the infrared sensing device captures three-dimensional action information of a user through an emitter and a receiver which are arranged in a matrix mode. The problems that a traditional display device is poor in interaction experience and single in display effect are solved, natural and smooth long-distance human body action interaction and immersive visual experience are achieved, and the system is suitable for many fields such as science and technology exhibition, commercial exhibition and intelligent education.

The invention discloses a low-illumination image enhancement method combining multi-channel parallel attention and cross fusion, and relates to the field of photoelectric display. In order to solve the problems of high model complexity, brightness and color gamut information coupling, artifact fusion and the like in low-illumination image enhancement, the invention provides a lightweight low-illumination image enhancement network, brightness and chrominance information are separated in a YCbCr color space, brightness structure features are extracted through a lightweight denoising module and a multi-head attention mechanism, and a low-illumination image is obtained. And a multi-channel parallel attention module (MCPA) is designed to enhance the chromaticity context modeling capability. According to the invention, a brightness-guided cross fusion module (LCA) is introduced, and cooperative enhancement of the structure and the color is realized through joint channel-space attention optimization. According to the method, a relatively high image quality index is obtained on multi-class public low-illumination data, meanwhile, the parameter quantity and the calculation quantity are remarkably reduced, and the method is suitable for edge device deployment. According to the method, color cast and fusion artifacts can be effectively inhibited, and the consistency of structural details and colors is improved.

The invention relates to the technical field of optical films, and discloses a high-brightness peep-proof film, which comprises: a substrate layer, which is prepared from polyethylene glycol terephthalate or polycarbonate with the light transmittance of 90% or more; the pattern layer is arranged on one side of the base material layer and comprises light transmitting parts and shielding parts which are alternately arranged; the perovskite quantum dot light-emitting layer is embedded into the light-transmitting part and is used for converting incident light into high-color-purity light; the self-repairing layer covers the surface of the pattern layer and comprises an optical adhesive layer of microcapsules; wherein the light incident surface side surface of the shielding part forms a circle, and the curvature radius is 5-100 [mu] m. CsPbX quantum dots are modified through oleic acid and octadecylamine double ligands, the luminous efficiency and stability are remarkably improved through surface defect passivation and energy level regulation and control, the monodispersity of quantum dot dispersion liquid is achieved, the quantum dot dispersion liquid is embedded into a light transmitting part through an ink-jet printing technology, and the forward light and wide color gamut effects of the peep-proof film are enhanced.

The invention discloses an image splicing method and device, a storage medium, a terminal and a computer program product, and the method comprises the steps: determining an optimal splicing line between mapping images after obtaining a first mapping image and a second mapping image corresponding to a to-be-spliced first image and a to-be-spliced second image respectively; determining an initial brightness adjustment area based on the optimal splicing line and a preset brightness adjustment width; for each pixel position of the initial brightness adjustment area, based on the brightness difference between the pixel pairs of the first mapping image and the second mapping image at the pixel position and the brightness adjustment width, adjusting the original brightness value of one pixel in the pixel pairs to obtain the adjusted brightness value of the other pixel; and carrying out image fusion processing based on the original brightness value and the adjusted brightness value of each pixel pair of the initial brightness adjustment region to obtain a fused brightness adjustment region, and then obtaining a spliced image. According to the scheme, the accuracy of brightness adjustment can be improved, and the image splicing effect is improved.

The invention discloses a control method of a micro light-emitting unit array display, electronic equipment of the micro light-emitting unit array display and a computer program product. In the display process of the current frame, the micro light-emitting unit array display adopts a preset scanning time sequence to sequentially scan the backlight of each pre-divided partition; and when the target partition backlight is scanned, backlight control is performed based on the response stage of the liquid crystal corresponding to the partition: the target partition backlight is closed when the liquid crystal is in the turnover stage, and the target partition backlight is opened based on the target brightness when the liquid crystal is in the stable stage. By means of accurate matching of the backlight switch and the response state of the liquid crystal, smear and ghosting generated when the liquid crystal is displayed in the overturning process can be avoided, and therefore dynamic blurring is effectively reduced, and the definition of a moving picture is improved. Meanwhile, the method does not need a complicated frame insertion frequency multiplier circuit or whole-screen black frame insertion, so that the excellent dynamic display performance can be realized with lower cost on the premise of keeping higher brightness output.

A optically transmissive component is configured within a light fixture to provide benefits in brightness uniformity and visual appearance with the use of a light scattering extension portion that provides light scattering of light emitted from near an input edge of a light guide or other edgelit optical element. The sequential propagation of light through both the extension portion and main portion of the optically transmissive component significantly reduces the higher brightness and uneven “hotspotting” type visual defects typically produced near the input edge of an edgelit optical system. With appearance constraints removed or reduced, edgelit light fixtures with higher output, higher efficacy, and / or simplified edgelit optical components are enabled. Embodiments include the use of the extension portion of the optically transmissive component extension to mechanically position and retain an edgelit optical element within a light fixture.

The invention discloses a coherent modulation detection method and device for extreme ultraviolet lithography mask phase defects. High-precision full-field reconstruction of nanoscale phase defects is realized through an iterative algorithm. The device adopts a compact extreme ultraviolet light source to generate high-brightness coherent light, focusing probe light is reflected by a multi-layer film focusing optical device and enters a mask at a Bragg angle, the reflected light carries phase defect information, the defect information is coded into an intensity signal through amplitude-phase dual modulation of a modulator, a photoelectric detector collects a diffraction pattern, and the diffraction pattern is detected by a detector. Inputting an iterative algorithm; and finally realizing the quantitative reconstruction of the phase defect by combining support constraint with an error amplification coefficient, ensuring the convergence of the algorithm, modulating a forward propagation simulation light field, correcting the calculated light field by amplitude constraint, demodulating a reverse propagation simulation light field, and finally realizing the quantitative reconstruction of the phase defect. The device is suitable for online detection of the extreme ultraviolet mask, and has the advantages of strong anti-noise capability, good algorithm convergence, low requirement on the dynamic range of a detector and the like.

This application discloses an imaging device with an operating temperature range of -40℃ to +60℃, comprising a 4K high-definition lens and a detector for receiving images captured by the 4K high-definition lens. The 4K high-definition lens has a focal length of 50mm, a relative aperture of 1.25, and operates in dual bands: 0.43~0.656μm and 0.7~1μm. The detector has a pixel count of 3840×2160 and a pixel size of 2.9μm. The 4K high-definition lens employs a heat-free design using domestically produced spherical glass, resulting in a simple, compact structure and small size. It utilizes a high-dispersion material lens and a low-dispersion material glass bonded together to achieve dispersion matching. The combination of different lenses and the rational allocation of optical power ensure excellent optical performance. Furthermore, it is suitable for imaging in high-brightness daytime and low-light nighttime environments and can switch bands for imaging, ensuring clear images both day and night.

The invention relates to a QWLED of a three-dimensional heterojunction quantum well composite light-emitting layer based on cadmium selenide and lead sulfide quantum dots and a preparation method of the QWLED, and belongs to the field of LED preparation. The QWLED sequentially comprises an electrode layer, an inorganic electron transport layer, a CdSe / PbS three-dimensional heterojunction quantum well composite light-emitting layer, an organic hole transport layer and an ITO glass substrate from top to bottom, and the CdSe / PbS three-dimensional heterojunction quantum well composite light-emitting layer is of a three-dimensional heterojunction quantum well structure formed by compounding wide bandgap cadmium selenide quantum dots and narrow bandgap lead sulfide quantum dots. The CdSe / PbS quantum well composite material prepared by the invention has a three-dimensional depletion region and a three-dimensional heterojunction structure, high quantum efficiency, good optical characteristics and structural stability, and the prepared LED device with the three-dimensional depletion region and the three-dimensional heterojunction quantum well structure has excellent electroluminescent efficiency and external quantum efficiency, and can be used as a light emitting diode device of the three-dimensional depletion region and the three-dimensional heterojunction quantum well structure. And the method has huge application potential in the fields of high-brightness, long-service-life and high-resolution display technology and the like.

The embodiment of the invention provides an image processing method, a storage medium and an electronic device, and the method comprises the steps: obtaining the pixel values of two images with different exposures in a target scene, determining a fusion weight value according to the pixel values of the two images, the fusion weight values comprise a first fusion weight value, a second fusion weight value and a third fusion weight value, the first fusion weight value is a fusion weight value of a high-brightness area of the first image, the second fusion weight value is a fusion weight value of a low-brightness area of the second image, and the third fusion weight value is a fusion weight value of motion areas in the two images; and fusing the two images according to the fusion weight value to obtain a fused image, thereby solving the problem that a high-bit-width image output in an image fusion process has motion flaws in related technologies, and achieving the technical effects that the output high-bit-width image has a high dynamic range and the motion flaws are minimized.

The invention belongs to the field of projection display, and discloses a rear projection screen, which comprises an imaging layer, a black light absorption layer and a zigzag microstructure layer, the black light absorption layer is composed of a first black light absorption layer and a second black light absorption layer; the first black light absorption layer comprises a plurality of first black light absorption strips, the second black light absorption layer comprises a plurality of second black light absorption strips, and the first black light absorption strips and the second black light absorption strips are orthogonally stacked and arranged; the distribution distance between every two adjacent first black light absorption strips is increased or the distribution distance between every two adjacent second black light absorption strips is increased from the transverse center line / the vertical center line of the screen to the edges of the two ends. According to the rear projection screen, more projection light rays are absorbed in the central area of the screen and less or no projection light rays are absorbed in other areas by setting the distribution distance between the first black light absorption strips and the second black light absorption strips, so that the brightness difference between the central area of the projection screen and the other areas is reduced, and the brightness of the projection screen is improved. And the rear projection screen with high brightness uniformity is obtained.

Provided is a highly reliable display device. Provided is a display device with high contrast. Provided is a display device with high visibility. Provided is a high-brightness display device. Provided is a high-definition display device. Provided is a display device with high resolution. The display device includes a light-emitting device including a first electrode on a first insulating layer, an EL layer on the first electrode, and a second electrode on the EL layer. The first electrode covers a part of an upper surface and a side surface of the first insulating layer. An end of the first electrode is located between the upper surface and a lower surface of the first insulating layer.

The application discloses a kind of laser speckle testing device based on hyperspectral imaging, which realizes high-precision measurement of laser spot and speckle signal under the condition of not relying on expensive refrigeration system by optimizing optical structure and control strategy.The device includes imaging lens, lens electric control module, liquid crystal tunable filter module, ND filter wheel and its driving mechanism, two-dimensional image sensor, main control unit, three-axis acceleration sensor, PC host and the screen to be measured.The noise calibration piece pre-stored in the ND filter wheel is used to collect noise data in real time before each measurement, and noise subtraction is carried out before the filter switching to improve the timeliness and accuracy of data correction;At the same time, the integrated three-axis acceleration sensor is used to monitor vibration, and when vibration exceeding the preset threshold is detected, it is determined that the current collected data is invalid and automatically triggers re-sampling.The application has compact structure and low cost, and is suitable for laser display, projection calibration and high-brightness light source detection and other fields.

The invention relates to an optical system based on 8K laser tilt-shift zoom projection and a control method thereof, and relates to the technical field of projection display. According to the optical system, the laser light source is adopted, and the optical expansion amount and the size of the optical system are reduced through a multi-reflector structure and a beam expanding / collecting optical system. The 8K tilt-shift zoom lens has the function of automatically adjusting the projection position and size, the galvanometer module is located at the light emitting position of the display chip, and through a temperature compensation mechanism and an automatic image shooting system, galvanometer parameters are optimized, and the working quality of a galvanometer at different temperatures is ensured. The automatic focusing system realizes automatic focusing of a projection picture through TOF ranging data fitting and an image acquisition definition analysis algorithm, and ensures that the picture reaches an optimal focusing state within several milliseconds. Through the innovative optical design, the galvanometer control technology and the automatic focusing system, the high-resolution, high-brightness and high-color-gamut 8K laser tilt-shift zoom projection effect is achieved, and the high-resolution, high-brightness and high-color-gamut 8K laser tilt-shift zoom projection system has the advantages of being small in size, automatic and high in reliability.

A viewing angle control system includes sequentially: a first polarizer, a first optical compensation layer, a first TN-mode liquid crystal cell, a second polarizer, a second TN-mode liquid crystal cell, a second optical compensation layer, and a third polarizer. The first and second optical compensation layers each exhibit minimum retardation in a tilted direction rather than in a normal direction. The system provides high brightness in a front direction and low brightness in an oblique direction at a specific azimuthal angle when applied to a light source.