2429 results about "Optical film" patented technology

The invention relates to an optical film detection method, device and equipment based on image processing. The method comprises the following steps: collecting multiple frames of images of a multilayer optical film under different illumination conditions, and carrying out preprocessing and characteristic value calculation on the multiple frames of images to obtain a characteristic value response matrix; calculating an optimal weight coefficient of each frame of image according to the feature value response matrix, and performing multi-frame image feature fusion to obtain integrated feature representation; performing multi-scale defect feature extraction on the integrated feature representation to obtain a defect candidate region; spectral response characteristics are extracted based on the defect candidate area, matching degree calculation is carried out on the spectral response characteristics and a preset wavelength-film thickness mapping relation matrix, and a multilayer film defect distribution diagram is obtained; and performing autoregression prediction and processing control parameter optimization on the multilayer film defect distribution diagram to obtain a closed-loop control scheme. According to the invention, accurate identification and classification of different film layer defects are realized, and closed-loop control of defect detection results and manufacturing parameter optimization is further realized.

The invention provides a multi-layer optical film detection method, device and equipment and a storage medium, and the method comprises the steps: obtaining a polarization phase difference signal of transmission light and reflected light through multi-angle incidence irradiation of a multi-band programmable laser source, and recording the polarization ellipticity parameter change; then combining confocal microscopic interference and polarization analysis to determine a space coordinate and a stress distribution diagram of a stress abnormal region; continuously irradiating in a photo-thermal coupling environment through a broadband light source, and monitoring interference signals, polarization states and temperature changes to obtain dynamic evolution characteristics; and finally, performing a simulation test on the multi-layer optical film in a system environment with preset optical axis arrangement and light beam energy distribution, obtaining an in-situ polarization state and interference pattern data, and evaluating the optical performance of the film layer. According to the invention, potential defects can be positioned under high resolution, and the reliability and imaging quality of the film layer under complex application conditions can be accurately evaluated.

A coating composition comprises: a fluoro-aliphatic group-containing copolymer comprising a repeating unit A corresponding to a fluoro-aliphatic group-containing monomer, and a repeating unit B corresponding to at least one monomer, wherein each of the I / O values of said at least one monomer constituting the repeating unit B is 1.0 or less.

The embodiment of the invention discloses an optical film, a polaroid and a display device. The optical film comprises a first base layer; the second base layer is positioned on at least one side of the first base layer; the first base layer has a first solid phase; the second base layer contains at least two second solid phases; in the at least two second solid phases, two adjacent second solid phases are connected to form a plurality of interfaces, the plurality of interfaces are distributed in the second base layer, and the two second solid phases forming the interfaces are made of different materials. The multiple interfaces are distributed on the second base layer, so that directional reflection of light on the second base layer is reduced, and the anti-dazzling effect is achieved. Besides, the optical film can also provide good light transmittance and higher mechanical strength, so that the integration of an anti-dazzle function is realized on the protective base material of the polaroid, and the thickness and the manufacturing cost of the polaroid are effectively controlled.

The invention discloses a composite optical film with a polarization function, a preparation method and application thereof. The composite optical film comprises a transparent substrate layer, and a buffer layer, an oriented calcite crystal layer and an anti-reflection layer which are laminated on one side of the transparent substrate layer. Wherein the oriented calcite crystal layer is obtained by coating a superparamagnetic modified calcite crystal composite material suspension on the surface of the buffer layer, inducing optical axis oriented arrangement through a magnetic field and performing UV curing; the buffer layer is obtained by co-extruding a cycloolefin polymer and a polyurethane acrylate mixture, and a thermal expansion coefficient transition system is formed; the anti-reflection layer is composed of nano-porous titanium dioxide with the refractive index changing from 1.8 to 2.3 in a gradient mode, and a refractive index gradient structure is formed. According to the composite optical film, the polarization efficiency and the light transmittance of the composite optical film are improved and the industrial stability is improved through the design of the polarization functional layer in which the calcite nanocrystals are directionally arranged under the induction of a magnetic field and in combination with the gradient refractive index scattering layer.

The invention discloses an optical film surface flaw detection method and system, a product and a medium. The method comprises the following steps: acquiring an edge detection image; performing connected domain segmentation in the edge detection image; calculating shape features of the connected domain; comparing the shape features of every two connected domains, and combining the connected domains with similar shape features into a combined connected domain; calculating gray value distribution characteristics and gradient change characteristics of the combined connected domains, and inputting the gray value distribution characteristics and the gradient change characteristics into the single defect characteristic model to obtain a combined single defect error value; the combined connected domains with the combined single flaw errors larger than a preset single flaw error threshold value are split into original similar connected domains to serve as flaw connected domains, and the flaw connected domains further comprise combined connected domains with the combined single flaw errors not larger than the preset single flaw error threshold value and non-similar connected domains; and constructing a defect type feature library, and carrying out defect type matching on all defect connected domains. By implementing the technical scheme provided by the invention, the accuracy of defect identification is improved.

This case relates to a self-healing optical film and its preparation method. The optical film is made by adding a nanoparticle suspension to PET masterbatch as the main material during its melt extrusion process, resulting in a cast sheet. After biaxial stretching, a self-healing coating liquid is coated online, followed by shaping and cooling. The nanoparticle suspension includes nano-titanium oxide, MAH-PET polymer, ATO nanoparticles, and titanate coupling agent. The self-healing coating liquid is produced by core-shell emulsion polymerization, forming a nano-silica hard core and an acrylate functional monomer polymer soft shell. This invention adds the nanoparticle suspension by in-situ feeding in the middle of the extruder, reducing steps, improving dispersion uniformity, and making the film surface smoother. Then, the self-healing coating liquid is applied online after longitudinal stretching and before transverse stretching, forming a film on the film surface, improving the hardness and scratch resistance of the film material, enabling rapid self-healing at room temperature, strong stability, and avoiding the occurrence of rainbow patterns.

The embodiment of the invention provides an anti-dazzle low-reflection optical film and a preparation method and application thereof, and relates to the field of optical films. The anti-dazzle low-reflection optical film comprises a base material layer, an anti-dazzle layer and a low-reflection layer which are sequentially stacked from bottom to top, the low-reflection layer contains low-reflection particles, and the anti-dazzle layer contains organic anti-dazzle particles and inorganic particles. The mass concentration of the organic anti-dazzle particles close to the base material layer is larger than the mass concentration of the organic anti-dazzle particles close to the low-reflection layer, the mass concentration of the inorganic particles close to the base material layer is smaller than the mass concentration of the inorganic particles close to the low-reflection layer, and the refractive index of the low-reflection particles is larger than the refractive index of the inorganic particles and smaller than the refractive index of the organic anti-dazzle particles. Seen from the direction from the low-reflection layer to the base material layer, the refractive indexes of all the layers are gradually increased. According to the anti-dazzle low-reflection optical film and the preparation method and application thereof, the optical film achieves high haze and low reflectivity and can be applied to a strong light environment.

The invention relates to the technical field of PET optical films, and particularly discloses a high-light-transmittance blue-light-resistant PET optical film and a preparation method thereof, and the high-light-transmittance blue-light-resistant PET optical film is prepared from the following raw materials by weight: 70-85% of a polyethylene glycol terephthalate resin matrix; 3%-8% of a benzotriazole anti-blue light agent; 5%-12% of a silicon dioxide nano anti-reflection agent; 2%-6% of nano zinc oxide or nano cerium oxide; 1.5% to 4% of a polycarbodiimide cross-linking agent; 0.5%-3% of an anti-blocking agent; 0.4%-1.5% of an antioxidant; 0.4%-1.0% of an ultraviolet light absorber; the balance is a processing aid; the preparation method comprises the following steps: S1, pretreating the raw materials; s2, a mixing procedure; and S3, extruding and coating. The PET optical film provided by the invention has high optical properties of high light transmittance, blue light resistance and low haze, and has the advantages of high light transmittance and blue light blocking rate of the optical film and improvement of the application range of the optical film.

Provided are a foldable optical film with excellent impact resistance and with capability to improve design quality, and an image display device including the same. An aspect of the present invention provides a foldable optical film 10 with a front surface 10A and a back surface 10B opposite to the front surface 10A, wherein optical film 10 includes a hard coat layer 12, a resin layer 13, and a decorative layer 14; the hard coat layer 12 is located closer to the front surface 10A than the resin layer 13 and the decorative layer 14 in the optical film 10; and the resin layer 13 has a film thickness of 10 μm or more, and the resin layer 13 has a Martens hardness of 1 MPa or more and 100 MPa or less.

The invention discloses an infrared film absorptivity prediction method and system based on machine learning, and relates to the technical field of optical film design and performance prediction.The infrared film absorptivity prediction method comprises the following steps that feature data of a to-be-measured film material and incident light are obtained, electromagnetic field distribution and local absorption power density are output, and according to power integration and boundary conditions, an infrared film absorptivity prediction result is obtained; obtaining initial absorptivity distribution; performing modal analysis on the initial absorptivity distribution, constructing a low-dimensional absorptivity response model, and outputting absorptivity response data after dimension reduction; constructing a physical constraint neural network by taking energy conservation and Fresnel boundary conditions as constraints; on the basis of a physical constraint neural network, absorptivity prediction is carried out on the infrared thin film under different conditions, thin film structure data are optimized through a multi-objective optimization algorithm, and an optimal structure parameter combination of the infrared thin film is obtained; according to the invention, through multi-physics field modeling and the physical constraint neural network, the problems of low infrared film absorptivity prediction precision and poor optimization efficiency are solved.

The invention belongs to the technical field of optical film measurement, and particularly relates to a method and system for measuring the thickness of a quartz substrate optical film. The method comprises the following steps: acquiring a surface coordinate model of a quartz substrate, and dividing a film area into a parallel measurement area and a non-parallel measurement area; performing parallel measurement and non-parallel measurement on the two types of regions respectively to obtain first thickness data and second thickness data which jointly form original thickness data; determining measurement parameters corresponding to the original thickness data acquisition process, wherein each measurement parameter represents the offset of the corresponding measurement point; and correcting the original thickness data based on the measurement parameters to generate corrected thin film thickness data, and taking the corrected thin film thickness data as the thickness of the thin film area. According to the invention, dynamic error correction is carried out on the original thickness data, the accuracy and reliability of the thickness data of the thin film are improved, and meanwhile, comprehensive scanning of the irregular thin film is realized through a partition measurement strategy.

The utility model discloses an automatic deviation rectifying and conveying device for an optical film. The automatic deviation rectifying and conveying device comprises a bottom frame, a first guide rail assembly, a movable frame, a film rolling roller, a rotary driving mechanism, a fixed frame, a deviation rectifying sensor and a pushing air cylinder. The bottom of the movable frame is connected with the bottom frame through a first guide rail assembly, the pushing air cylinder is arranged on the bottom frame, and the movable end of the pushing air cylinder is connected with the movable frame. The deviation correcting sensor is connected with the side end of the fixed frame through the clamping arm, and the pushing air cylinder is used for pushing the movable frame to transversely move relative to the bottom frame according to the transverse deviation position of the optical film. In the conveying process of the optical film, the deviation rectifying sensor can monitor the transverse position of the optical film in real time, when it is detected that the optical film deviates transversely, the pushing air cylinder can be controlled to drive the movable frame to transversely move along the first guide rail assembly, the optical film is rapidly adjusted to the correct position, automatic deviation rectifying is achieved, and the production efficiency is improved. And the conveying stability of the optical film is improved.

The utility model relates to an optical composite film. The optical composite film sequentially comprises a first prism layer, a first base material layer, a haze attaching layer, a second prism layer, a second base material layer and a high-haze diffusion layer from top to bottom. Wherein the first prism layer adopts a microstructure design, the bottom width of the first prism layer is smaller than that of the second prism layer, the bad phenomenon of light interference is avoided, the second prism layer is composed of a prism group composed of high prisms and low prisms, and multi-angle and multi-layer regulation and control of light are achieved. In addition, due to the arrangement of the haze attaching layer and the high-haze diffusion layer, the diffusion effect and the shielding performance of the optical composite film are enhanced. Through the integrated design, the functions of a traditional multi-layer optical film and a diffusion plate are combined into a single film, the product weight and thickness are reduced, the product structure and the assembly process are simplified, and the production efficiency and reliability are improved. High optical gain is maintained, high shielding performance is achieved, and the advantages of improving display image quality, reducing product weight and thickness, simplifying product structure and assembly process and the like are achieved.

Provided is an adhesive composition from which an adhesive layer having excellent heat-resistant durability can be formed. This adhesive composition comprises a (meth)acrylic resin, a crosslinking agent, a silane compound, and an ionic compound, wherein: the (meth)acrylic resin contains, as monomer units, an alkyl (meth)acrylate having a homopolymer glass transition temperature of lower than 0ºC, an alkyl (meth)acrylate having a homopolymer glass transition temperature of at least 0ºC, and a monomer having a polar group; and the ionic compound contains a cyano group-containing anion.

The invention relates to the field of high polymer materials, and discloses a preparation method and application of high-temperature-resistant transparent modified polyester. The preparation method comprises the following steps: 1) blending 9, 9-di-[(4-phenylphenoxy) dibenzoic acid] fluorene with diacid and dihydric alcohol, and carrying out esterification reaction; and 2) carrying out condensation polymerization on the esterification product to obtain the high-temperature-resistant transparent modified polyester with the glass transition temperature of more than 70 DEG C. According to the invention, 9, 9-di-[(4-phenylphenoxy) dibenzoic acid] fluorene is used as a modification monomer, and is copolymerized with other dibasic acids and dihydric alcohols to synthesize the modified polyester, and the modified polyester has high transparency and still has good mechanical properties and dimensional stability at high temperature. Therefore, the high-temperature-resistant transparent modified polyester is applicable to the application fields of optical films, optical lenses, reflective protective films, optical fibers or liquid crystal displays and the like.

The invention belongs to the field of electronic display film materials, and discloses a UV optical film material and a manufacturing method and application thereof.The UV optical film material comprises a base material, a frosted layer, an inner protective film layer, an optical ink layer, a transparent adhesive layer and an outer protective film layer, and the inner surface of the base material is sequentially coated with the frosted layer and the inner protective film layer outwards; the outer surface of the base material is sequentially coated with an optical ink layer, a transparent adhesive layer and an outer protective film layer outwards; the coating process comprises the steps that the viscosity of UV optical ink is controlled to be 16 ''-18'', the outer surface of the base material is coated with the UV optical ink through a precise micro-concave ceramic coating roller, and then UV curing is conducted to form an optical ink layer; coating a transparent adhesive layer on the surface of the optical ink layer, and after curing, coating UV optical transfer adhesive on the inner surface of the base material to form a frosted layer; finally, the surface of the frosted layer and the surface of the transparent adhesive layer are coated with an inner protective film layer and an outer protective film layer respectively. The coating has the characteristics of high hardness and high adhesive force, the surface can be kept uniform, the edge sharpness is high, and discoloration can be effectively prevented.

The invention relates to the field of optical display and material engineering, in particular to a silica gel integrated optical film with a 3D light splitting function and a manufacturing method of the silica gel integrated optical film. A silica gel integrated optical film with a 3D light splitting function comprises a transparent optical base material and a microstructure layer, and the microstructure layer is combined on the surface of the transparent optical base material in an integrated forming mode. And the microstructure layer is an anhydrous silica gel-resin composite material obtained by combining organic silica gel with low refractive index and resin with high refractive index through an anhydrous chemical reaction system. The optical film obtained in the invention has excellent interface bonding stability and long-term reliability, the overall thickness of the optical film is small, the optical loss is reduced, the light transmittance is higher, and the overall transmittance can reach 93% or above. And the manufacturing process integration degree and the mold repeated utilization rate are high, the industrial batch production requirement can be met, and the excellent industrial application prospect is achieved.

To provide a high efficiency light guide element.SOLUTION: A light guide element has a first light guide portion that propagates a light beam incident thereon while reflecting the light beam therein, and a second light guide portion that emits the light beam from the first light guide portion part by part while reflecting the light beam therein. A first optical film 10-i is provided on the first light guide portion, and a second optical film 11-i different in characteristics from the first optical film is provided on the second light guide portion to be adjacent to the first optical film. A first light guide member 1-i constituting the first light guide portion and a second light guide member 1-ii constituting the second light guide portion are closely adhered or joined to each other.SELECTED DRAWING: Figure 1

A housing (185) for an electronic device (170) includes an optical film (100) having an optical transmittance for substantially normally incident light having a band edge separating first and second wavelength ranges, where the first wavelength range extends from about 400 nm to about 700 nm and the second wavelength range is at least about 100 nm wide and disposed between about 800 nm and about 1100 nm. For substantially normally incident light, an average optical reflectance of the optical film is greater than about 90% in the first wavelength range, and an average optical transmittance of the optical film is greater than about 80% in the second wavelength range. For at least one frequency in a range of about 0.1 GHz to about 90 GHz and for substantially normally incident radiation, the optical film transmits at least about 95% of the incident radiation.

The invention discloses quality detection equipment and process for optical film material production, and belongs to the field of optical film material detection. Quality detection equipment for optical film material production comprises a detection box and a light-transmitting detection assembly installed in the detection box, a plurality of sets of guide rollers are fixedly connected into the detection box, an optical film material sequentially penetrates through the guide rollers after entering the detection box, the quality detection equipment further comprises two sets of liquid guide pipes, the two sets of liquid guide pipes are fixedly connected into the detection box, and the two sets of liquid guide pipes are arranged in the detection box. The two liquid guide pipes are located on the two sides of the optical film material correspondingly. Deionized water is continuously sprayed to the surface of a moving optical film material through the flow guide effect generated in the flow guide disc, so that the surface of the optical film material is comprehensively washed, the cleanliness of the surface of the optical film material is ensured, and the detection precision is improved; and in cooperation with the arrangement of multiple layers of rotary filtering membranes, cyclic utilization of the cleaning liquid is achieved, and the energy-saving effect is improved.

The invention relates to the field of optical thin films, in particular to a preparation method of an optical diffusion film. A preparation method of an optical diffusion film comprises the following steps: uniformly mixing a curing agent and polydimethylsiloxane, curing, and then carrying out oxygen plasma treatment and room temperature aging treatment to obtain a polydimethylsiloxane flat plate; dissolving PET particles and PMMA particles in a solvent to obtain a polymer solution; and placing a polydimethylsiloxane flat plate above the polymer solution, and standing to obtain the optical diffusion film. According to the application, PMMA is used as a high glass transition temperature component to be blended with PET, so that the overall glass transition temperature of a blending system is improved, and the practicability of the optical diffusion film in a high-temperature environment is improved; strong scattering is provided through the refractive index difference between air holes and a polymer phase, and a refractive index gradient is formed by using the refractive index difference between PET and PMMA, so that a secondary scattering interface is formed, and light absorption is reduced and high transmittance is maintained while high haze is ensured.

The invention relates to the technical field of optical films, and discloses a PET-based composite optical film and a preparation method thereof.The optical film is prepared from 100 parts of PET master batch, 5-10 parts of anti-blue-light nanofiller and 1-3 parts of interfacial compatibilizer through melt extrusion, asynchronous two-way stretching, online anti-fingerprint coating liquid coating and cooling and rolling; the blue-light-resistant nano filler is a core-shell structure filler prepared by taking KH570 silanized nano cerium oxide as a core, polymerizing by grafting glycidyl methacrylate to form a shell layer, and then reacting with 1H-benzotriazole-1-methanol. The anti-fingerprint coating liquid is prepared from perfluoropolyether modified siloxane acrylate and nano silicon dioxide sol. Through core-shell filler design and functional coating online coating, the technical problems that inorganic nanoparticles are easy to agglomerate and organic small molecule auxiliary agents are easy to migrate are synergistically solved, and the obtained optical film has excellent properties of high light transmittance, low haze, efficient blue light resistance and lasting fingerprint resistance and is good in durability.

The invention provides an arylamine compound, an optical film, a light-emitting device and a display panel, and relates to the technical field of display, and the structural formula of the arylamine compound is shown in the specification. The arylamine compound provided by the invention has a relatively high refractive index, and can effectively improve the luminous efficiency of the light-emitting device when being applied to a covering layer of the light-emitting device.

The invention provides an optical anti-counterfeiting film with a three-dimensional dynamic display effect, the minimum function structure of the optical anti-counterfeiting film comprises a first Moire image layer, a transparent optical refraction layer and a second Moire image layer which generates a Moire effect with the first Moire image layer, one of two coherent Moire images is processed on the front surface of the transparent optical film, and the other of the two coherent Moire images is processed on the rear surface of the transparent optical refraction layer. And the other one of the two coherent Moire images is processed at the corresponding position of the rear surface, and the period of the Moire image has a strict mathematical relationship with the refractive index n of the optical transparent material and the thickness h of the optical transparent material, so that a three-dimensional dynamic pattern effect capable of being observed by naked eyes is realized. According to different processing methods, the manufacturing method of the optical anti-counterfeiting film and the product of the optical anti-counterfeiting film can be realized from the cost of common printing to the cost of high-precision micro-nano processing such as electron beam lithography, the market requirements of various grades can be met, and the anti-counterfeiting difficulty grade can be changed according to different image design and processing methods.

The invention provides an observation window group of a vacuum evaporator door for observing an optical film material, the observation window group comprises a plurality of observation window devices, each observation window device comprises a mounting frame, an outer shading device and an observation window body, the mounting frame protrudes out of a cavity door, and the outer shading device is connected to the outer side of the mounting frame; the observation window body comprises a first rotating shaft, a first anti-attachment plate, a second rotating shaft, a second anti-attachment plate, first glass and second glass, one end of the first rotating shaft penetrates through the mounting frame to be connected with the first anti-attachment plate, the second anti-attachment plate and the first glass, and the other end of the first rotating shaft penetrates through the outer shading device to be connected with the outer shading device; the second rotating shaft is connected outside the first rotating shaft in a sleeved mode, one end of the second rotating shaft is connected with the second adjusting bolt in a sleeved mode, and the other end of the second rotating shaft is connected with the circle center of the second anti-attachment plate in a clamped mode. The first anti-adhesion plate and the second anti-adhesion plate are both anti-adhesion plates larger than a semicircle and smaller than a whole circle, the film material is prevented from splashing, and the replacement frequency of the first glass and the second glass is reduced.

The invention discloses a UV-cured high-weather-resistance optical thin film and a preparation method thereof, and relates to the technical field of optical thin films. The optical film is prepared by taking polyethylene glycol terephthalate as a base material and coating the base material with a UV curing coating, and the UV curing coating comprises the following raw materials in parts by weight: 15-20 parts of aliphatic polyurethane acrylate, 5-8 parts of perfluorobutyl ethyl acrylate, 8-12 parts of hydroxyethyl acrylate, 6-10 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 2, 4-trimethyl-1, the invention relates to a UV (ultraviolet)-resistant coating which is prepared from the following raw materials in parts by weight: 1-2 parts of 2, 6-hexanediol diacrylate, 5-8 parts of trimethylolpropane triacrylate, 30-40 parts of modified epoxy acrylate, 1-2 parts of a silane coupling agent KH-570, 2-3 parts of a photoinitiator 1173, 0.5-1.2 parts of a modified ultraviolet absorbent UV-327, 0.8-1.5 parts of a hindered amine light stabilizer 540, 0.3-0.8 part of an antioxidant 1010, 0.09-0.12 part of an ultraviolet absorbent Tinuvin400 and 0.2-0.5 part of polyether modified polydimethylsiloxane. According to the UV-cured high-weather-resistance optical thin film, polyethylene glycol terephthalate is used as a base material, key raw materials such as a UV-cured coating with a scientific formula, modified epoxy acrylate and the like are finely prepared, a two-stage curing process is adopted, and the weather resistance is excellent.

The utility model provides a display module and a display device. The display module comprises a display panel, a backlight module and a bonding layer. The display panel comprises a display area and a frame area arranged around the display area. The backlight module comprises a light guide plate and an optical film layer, the light guide plate is provided with a first face and a second face which are oppositely arranged, the first face is closer to the display panel than the second face, the first face comprises a first area and a second area arranged around the first area, and the second area is arranged around the first area. The optical film layer is arranged between the display panel and the first face, and the orthographic projection of the optical film layer on the first face is located in the first area. The bonding layer is arranged between the display panel and the first face, the orthographic projection of the bonding layer on the display panel is located in the frame area, and the orthographic projection of the bonding layer on the first face is located in the second area.

The embodiment of the invention provides an eyepiece system and optical equipment. The eyepiece system comprises a first optical assembly and a second optical assembly which are arranged along the same optical axis. The first optical assembly is located on the eye side, is of a folded light path structure and comprises at least two lenses, a first composite optical film material and a light splitting element, the first composite optical film material comprises a first phase retarder and a polarization reflection element which are arranged in a stacked mode, and the first phase retarder is located between the light splitting element and the polarization reflection element; the second optical assembly is located on the display side, is of a direct light path structure and comprises at least one transmission lens. The eyepiece satisfies the following relational expression: 25 < = (D1 * phi 1-D2 * phi 2) / phi < = 50; wherein D1 is the maximum optical aperture in the first optical assembly, phi 1 is the focal power of the first optical assembly, D2 is the maximum optical aperture in the second optical assembly, phi 2 is the focal power of the second optical assembly, and phi is the focal power of the whole eyepiece system.

The invention relates to the technical field of super-lens packaging, in particular to a super-lens LED packaging structure, a super-lens LED lamp panel and a backlight system. According to the technical scheme, the LED lamp comprises an LED support, an LED wafer and a super lens, a metal electrical connection frame is arranged in the LED support, and a mounting step is arranged on the top of the LED support; the LED wafer is fixed in the LED bracket; and the super lens is fixed on the mounting step through packaging glue. According to the invention, the ultra-thin design is realized by integrally packaging the super lens and the LED wafer, the light is accurately regulated and controlled by using the microstructure on the surface of the super lens, the light spot uniformity is improved, the LED consumption and the dependence on the optical film are obviously reduced, the system adaptability is enhanced by the flexible layout of the driving chip, and the reliability is improved and the service life is prolonged by the closed packaging structure. The ultrathin performance, the optical performance, the cost and the reliability are comprehensively optimized, and an innovative solution is provided for a backlight system with high cost performance and high performance.