224results about How to "Implement reflection" patented technology

The invention discloses a periscope camera module. The periscope camera module comprises a light steering mechanism, a lens mechanism and a photosensitive chip, wherein the light steering mechanism ismounted at a light incident side of the lens mechanism, the photosensitive chip is mounted at a light exit side of the lens mechanism, the light steering mechanism comprises a prism, a prism holder,a support shaft and a base, the prism holder is arranged in the base, the prism holder has a support surface opposite to the prism, the prism holder is further provided with a shaft seat, the shaft seat is arranged at the other side of the support surface opposite to the prism, the shaft seat is provided with a through shaft hole, the support shaft is rotatably arranged in the shaft hole, the support shaft is perpendicular to an optical axis of an optical lens in the lens mechanism, the support surface has two side walls, and the intersection portion of the support surface and the side walls is provided with a support table which projects in the direction away from the support surface and extends along an intersection line of the support surface and the side walls. The periscope camera module is advantaged in that the prism holder and the support shaft are adopted, the anti-shake effect can be achieved through the rotatable prism, the structure is simpler, and manufacturing and maintenance are easy.

The invention provides an optical transmission module, a laser transmitting module, a laser radar system and a vehicle, wherein the optical transmission module includes a support having a light passage suitable for passage of light and a plurality of transmission submodules arranged on the support, arranged along the light passage in sequence and suitable for transmitting beams according to a preset light path. The laser radar system comprises a light source, the optical transmission module, a scanning module, and a detection module; the light source, the optical transmission module and the scanning module are arranged along a first light path in sequence; the scanning module, the optical transmission module and the detection module are arranged along a second light path in sequence. The optical transmission module according to an embodiment of the invention is compact in structure and optical path design, the laser transmitting module has small size, and therefore, utilization rate ofinner space of the laser radar system is increased; in addition, the laser radar system has good heat-dissipating performance and high in signal-to-noise ratio and has improved overall performance.

Along with the further improvement of requirements of large-size array photoelectric devices, the research of the splicing technology of array photoelectric devices needs to be developed urgently. Theinvention relates to an optical splicing method of a large-array photoelectric device, which achieves a condition that six small-array devices are spliced into a large-array device with a 2*3 mode, or four small-array devices are spliced into a large-array device with a 2*2 mode by adopting prism-type splicing and adjusting the positions of a prism and the array devices in space; and the splicingmethod is simple and easy for engineering realization, and can satisfy the requirements to large-array photoelectric detectors in the space remote sensing field.

This invention relates to a low radiation self-cleaning complex function glass. This glass has trilamellar membrane structure, membranous layer from glass outward in turns is : SiO2 transition layer, ion adulterated SnO2 layer, ion adulterated SiO2 - TiO2 layer. The on-line preparation method is sol-gel method, combine with atomizing sedimentation, utilize thermal decomposition and coagulation process of collosol at 450 to 550 deg to proceed heat sedimentation, in turns form membranous layer on the on-line glass plate surface. This invention through controlling the coating material concentration, dopant ion variety, thermal decomposition temperature and membranous layer thickness bring low radiation to the glass coated this membrane, execute stable uniwafer low emissivity glass, reduce cost, and realize reprocessing treatment of low radiation steeling and hot bending. This invention applies to common building and shield glass.

The invention relates to an LED visible light communication system and a light receiving antenna. The light receiving antenna comprises a converging and reflecting unit with converging and reflecting functions and a photoelectric detector arranged at a focal point of the converging and reflecting unit, wherein the converging and reflecting unit is used for converging light signals which are transmitted by an LED light source and carry communication information at the focal point, so that the photoelectric detector receives and analyzes the light signals and recovers the communication information. The light receiving antenna has the beneficial effects that convergence and reception of the light signals are achieved by the light receiving antenna, thus recovering the communication information carried in the light signals transmitted by the LED light source and achieving LED visible light communication; the reflective mirror with the reflecting surface being a paraboloid is adopted as the converging and reflecting unit, thus being capable of easily expanding the light receiving area, achieving large-range light receiving, being beneficial to detection of dim light, improving the sensitivity, avoiding impact of surrounding stray light and ensuring good anti-jamming effect; and a Fresnel prism is adopted to achieve reflection and convergence of light and convergence of reflective light with the help of a reflecting plate, thus reducing the volume of the receiving antenna.

The invention relates to modified PET (Polyethylene terephthalate) polyester as well as a preparation method and application thereof, and belongs to the field of modified polyester. The modified PET polyester comprises aerogel particles and polyethylene terephthalate; the aerogel particles are dispersed between the molecular chains of the polyethylene terephthalate uniformly; the particle size of the aerogel particles is 2 to 3 microns; the content of the aerogel particles in the modified PET polyester is 1 to 10 percent by weight. Modified PET is prepared by the steps of adding the aerogel powder into glycol, putting into a grinding machine, grinding to prepare mixed slurry, mixing the mixed slurry and terephthalic acid, and performing esterification reaction and polymerization reaction. Modified PET fiber is prepared by slicing the modified PET, metering, spinning, cooling, applying oil, stretching, performing heat setting and performing winding formation. The aerogel particles are introduced before polymerization of the PET polyester, so the prepared PET has high spinnability, can produce modified PET fibers with various thickness, has wide application range and can meet the production requirement of various fabrics.

The invention provides a light valve element and a control method thereof and a display device, and belongs to the technical field of display. The problems that an existing light valve element is complex in structure, difficult to prepare, large in power consumption and high in cost can be solved. The light valve element comprises a first substrate and a second substrate which are oppositely arranged in parallel, the space between the first substrate and the second substrate are divided into multiple chambers, and first electrodes and second electrodes are arranged in each chamber, are insulated from each other and are perpendicular to each other; each chamber is filled with an electrophoretic buffer solution containing charged reflection particles, and the reflection particles can be adsorbed to the surfaces of the first electrodes or the surfaces of the second electrodes. The light valve element is simple in working principle, easy to prepare, little in power consumption, low in cost and convenient and efficient to control.

The invention is a photon crystal all-direction all-reflecting film. It relates to a field of all-reflecting film able to generate 'forbidden band' for optical wave in a specific wave band to implement all reflection of the incident optical waves at all angles. The all-reflecting film is composed of substrate slice and medium layer; the medium layer is composed of two or many mediums with different refractive indexes, forming an one-dimensional periodical film unit, belonging to an one-dimensional photon crystal structure. For optical waves in specific wave bands, not only it can implement all reflection but the reflectivity has no relation to the incident angles, i.e. it can implement all reflection of the incident optical waves at all angles.

The invention belongs to the technical field of energy-saving and environment-friendly materials, and particularly relates to powder removal prevention aerogel composite insulation felt used for building and industrial energy saving and insulation. The insulation felt comprises an aerogel wet gel solution and a fiber framework material at a weight ratio of (2-30):1. A preparation method of the insulation felt comprises the steps of immersing the fiber framework material into the aerogel wet gel solution according to the aerogel wet gel solution and the fiber framework material at the weight ratio of (2-30):1 to achieve saturation adsorption of the aerogel wet gel solution by the fiber framework material, and then performing drying to obtain the insulation felt. The insulation felt overcomes the problems of high cost and easy powder removal of the existing insulation felt, and is better in performance and more environment-friendly.

The invention relates to a preparation method of a textured AZO (aluminum-doped zinc oxide) transparent conductive film. A high-alkali aluminosilicate glass substrate is subjected to texturing treatment to form a textured structure on the glass surface so as to provide foundation for the subsequent direct growth of the AZO film and the final formation of the textured surface, thereby implementing the textured structure of the directly growing AZO transparent conductive film on the glass surface, overcoming the defects of overhigh requirement for the thickness of the AZO transparent conductive film and waste of etching in the conventional technique of film formation before acid etching, and effectively lowering the production cost. The haze of the AZO transparent conductive film prepared by the method is 10-30%, the visible light transmittance is greater than or equal to 85%, and the square resistance is 8-15 ohm per square.

The invention belongs to the field of aqueous coatings and in particular relates to an ultrathin fireproof aqueous coating and a preparation method thereof. When the ultrathin fireproof aqueous coating is prepared, a component A and a component B are added, the component A comprises an aerogel precursor, stepless powder and the like, and the component B is used as a binding agent. The aerogel precursor is adopted as a core raw material to prepare the fireproof aqueous coating; as an aerogel material is of a nano three-dimensional structure and has characteristics that a solid heat conduction route is effectively prolonged, gas convective heat transfer is inhibited and thermal radiation is reduced, an aerogel fireproof coating made of the aerogel material has a thermal insulation property which is incomparable by conventional materials; after being applied to a steel material and dried, the ultrathin fireproof aqueous coating provided by the invention is relatively high in mechanical strength, achieves a fireproof grade A1, additionally has relatively good advantages of being waterproof and low in cost, and provides a novel material for buildings, environmental protection and industrial energy conservation.

The invention relates to a self-resonant structure based on a split resonance ring. The self-resonant structure comprises split ring structure 1 and adjunct circuit structure 2, wherein, the adjunct circuit structure 2 is positioned in an opening of the split ring structure 1 which can be formed by being surrounded by suspended metal strips and can also be a split rectangular ring or a circular ring formed by micro-strip structure printed on a media basic plate; the adjunct circuit structure 2, in whole, can be equivalent to the parallel connection of an inductor and a capacitor and can be realized by welded and lumped inductance and capacitance, also by a metal strip or distributed micro-strip structure printed on a media plate and still by a semi-lumped and semi-distributed circuit. The self-resonant structure based on a split resonance ring provided by the invention has narrow-band bandstop function, high-sensitivity frequency-phase responding and excellent stop-band or reflective characteristics and has the advantages of simple design structure, convenient processing and manufacture and excellent re-design and co-design capability and can be applied to the designs of filters (or a reflector required with high-sensitivity phase induction) in a planar circuit and spatial structure at the same time.

The present invention relates to a small long light path infrared gas sensor module. The module mainly comprises an infrared light source (2), a thermopile detector (6), an optical cavity / gas chamber, an infrared light source power supply lead wire connecting plate (1), a detector signal lead wire connecting plate (8), and a main circuit board (7). The optical cavity is a multiple reflection structure, and comprises two parts of a cavity upper cover (3) and a cavity lower cover (5). The power source is connected with the infrared light source (2) through the connecting plate (1) by the main circuit board (7). The main circuit board (7) receives a detection signal of the thermopile detector (6) through the connecting plate (8), and performs the treatments of completion of infrared light source modulation, simulation of signal filtering amplification, same period sampling, and data processing and output. According to the present invention, after the infrared light emitted by the infrared light source (2) is collimated by a parabolic surface, and then is subjected to a plurality of cylindrical surface convergence reflections and an inclined plane convergence reflection, the infrared light reaches the surface of the detector (6), such that a plurality of the reflections are completed in the small area to achieve a long light path so as to realize the miniaturization of the high resolution infrared gas sensor.

The invention discloses an array substrate, a display panel and a display apparatus. The array substrate includes an underlayment substrate, electroluminescent devices located on the underlayment substrate, and a reflection structure located on the side away from the light output surfaces of the electroluminescent devices. The reflection structure includes at least two groups of Bragg reflectors.Each group of Bragg reflectors is used to reflect the visible light in a preset waveband. Different groups of Bragg reflectors have different preset wavebands, and the preset wavebands do not overlapcompletely. The wavelength range of emission of each electroluminescent device overlaps the wavelength range of reflection of the Bragg reflector corresponding to the electroluminescent device. The reflection structure arranged in the array substrate is made of an insulating material, so that the corresponding problem in a metal reflection structure is avoided. Moreover, because the wavelength range of reflection of each Bragg reflector of the reflection structure in the invention is set to overlap the emission wavelength of the corresponding electroluminescent device, the light emitted by theelectroluminescent devices can be reflected.

The invention discloses a liquid crystal writing membrane. The liquid crystal writing membrane comprises a first base membrane, a composite layer and a second base membrane which are sequentially arranged, wherein the first base membrane comprises a first substrate layer and a first electrode layer which are sequentially arranged; the second base membrane is composed of a second electrode layer and a second substrate layer which are sequentially arranged; the composite layer is arranged between the first electrode layer and the second electrode layer; the first substrate layer is a writing surface; the composite layer comprises a first mixed layer, and one side surface of the first mixed layer is adhered to the first electrode layer; the first mixed layer comprises liquid crystal molecules and high-polymer materials, and the content of the high-polymer materials decreases gradually from the side away from the first electrode layer to the side close to the first electrode layer. The liquid crystal writing membrane can significantly improve the light intensity. Besides, the invention also discloses a preparation method and device of the liquid crystal writing membrane.

The invention discloses an optical way switching device of laser processing equipment. The optical way switching device comprises a laser for emitting a laser beam and a first laser scanning polariscope system for receiving the laser beam and performing the laser processing, further comprises an optical path switching part arranged between the laser and the first laser scanning polariscope system for reflecting the laser beam or passing through the laser beam, and further comprises a second laser scanning polariscope system for receiving the laser beam reflected by the optical path switching part and performing the laser processing. The invention further discloses the laser processing equipment comprising the optical way switching device. The optical way switching device enables the first laser scanning polariscope system and the second laser scanning polariscope system to asynchronously perform the laser processing so as to improve the use efficiency of a laser.

The invention relates to a light-emitting diode, s backlight module and a liquid crystal display device, relates to the field of polarized light-emitting devices, and is mainly aimed at providing a novel polarized LED with high light-emitting efficiency. The light-emitting diode comprises an optical grating layer, a light reflecting layer and a light-emitting part. The light-emitting part is arranged between the optical grating layer and the light reflecting layer. After the emission light emitted by the light-emitting part arrives at the optical grating layer, through the optical grating layer, TM line polarized light perpendicular to the optical grating direction of the optical grating layer can penetrate, the TE line polarized light parallel to the optical grating direction of the optical grating layer can be reflected, the light reflected by the optical grating layer can arrive at the optical grating layer again after being reflected by a light reflecting surface of the light reflecting layer, the TM line polarized light passes through the optical grating layer, and therefore the light-emitting efficiency of polarized light of the light-emitting diode is high.

The invention relates to a virtual reality superspeed real-time rendering method, and the method comprises the steps: A, building environmental parameters to build an image model, carrying out the interactive control of a camera, enabling the near peripheral region and far peripheral region of a view field to be divided into three rendering regions with different resolutions, and enabling the built image model to generate a Perlin noise height field; B, carrying out the sampling through a projection grid, and building a virtual figure; C, obtaining the data of top points in the virtual figure; D, enabling the data of all top points to be mapped in a coordinate system; E, calculating texture coordinates; F, loading the texture coordinates; G, mixing various types of texture colors in all rendering regions, and completing the rendering. According to the invention, the method employs the rendering regions and distributes different resolution proportions to match with different visual sensitivity in the view field of a user, reduces the operation cost by several times, saves the operation resources and power of a computer, and achieves the real-time superspeed rendering. The method draws a water surface with a real effect through the pixel rendering and top point rendering.

With the further increase in the demand for large-scale area array photodetection devices, it is urgent to carry out the research on splicing technology of area array photodetection devices. The optical splicing method of the large area array optoelectronic device of the present invention adopts prism type splicing, and by adjusting the positions of the prism and the area array device in space, it is realized that 6 pieces of small area array devices are spliced ​​into a 2×3 mode large area array device or Four small area array devices are spliced ​​into a large area array device in 2×2 mode. The splicing method is simple and easy to implement in engineering, which can meet the demand for large area array photodetection devices in the field of aerospace remote sensing.

The present invention provides a display device. The display device comprises a first substrate, a light regulation layer, a luminescent layer, a second light regulation layer and a second substrate which are stacked in order. The first light regulation layer and the second light regulation layer are configured to control light incident into the first light regulation layer and the second light regulation layer to switch between reflection and transmission; the first light regulation layer is configured to control light emitted by the luminescent layer and incident into the first light regulation layer to generate reflection and not to penetrate the first light regulation layer or to generate reflection to be emitted from one side where the first substrate is located; and the second lightregulation layer is configured to control the light emitted by the luminescent layer and incident into the second light regulation layer to generate reflection and not to penetrate the second light regulation layer or to generate reflection to be emitted from one side where the second substrate is located. The display device is combined with the display control method to avoid that the two-sided image of the display device is a mirror-image relation when display is performed, and the two-sides display device can normally display images and can be switched to single-sided display so as to saveenergy consumption and economic cost.

The invention provides a mirror surface display panel, a preparation method thereof and a mirror surface display device, and belongs to the technical field of display. The mirror surface display panelcomprises: a display substrate having a display area and a non-display area located at the periphery of the display area, wherein the display area comprises a plurality of organic light-emitting diodes arranged in an array and a packaging film covering the organic light-emitting diodes, the non-display area comprises a binding position, and the binding position is provided with a plurality of binding pins arranged at intervals; an inorganic protective layer is formed on the display substrate and covers the display area and the non-display area, and the inorganic protective layer is provided with a first hollow hole corresponding to the binding position; and a metal reflection layer is formed on one side, deviating from the packaging film, of the inorganic protection layer, and the metal reflection layer is provided with a second hollow hole corresponding to the organic light emitting diode. According to the mirror surface display panel, while mirror surface display is achieved, the light transmittance can be improved, and the manufacturing yield of the mirror surface display panel is guaranteed.

The invention discloses a multilayer optical thin film and a manufacturing method of the multilayer optical thin film. The multilayer optical thin film is characterized in that the thin film is formed by compounding one to 10,000 optical thin film units, and the thickness is 0.11 micron to 5,000 microns; each optical thin film unit is formed by compounding a layer of * material thin film and a layer of . material thin film, the thickness speciation of the * material thin films is 0.053 micron to one micron, and the thickness speciation of the . material thin films is 0.053 micron to one micron; the * material thin film and the . material thin film in the same optical thin film unit are different in refractive index. The multilayer optical thin film is manufactured in the mode of carrying out multilayer coextrusion through two extruders and then carrying out unidirectional or bidirectional stretching. The multilayer optical thin film has the functions of totally reflecting visible light and ultraviolet light, filtering 550nm green light and the like, and can be applied to manufacturing of building curtain wall reflecting thin films, automobile glass sticker thin films and reflecting telescopes.

The invention provides a graphene mesh / double-layer metal mesh transparent electromagnetic shielding device having a bidirectional wave-absorbing effect, belongs to the technical field of optical transparent part electromagnetic shielding, the electromagnetic shielding device utilizes different light-transmitting and microwave shielding characteristics which are shown when a graphene mesh film has different mesh unit hole area ratios, characteristics of low reflection and partial absorption of microwaves of the graphene mesh film and a strong electromagnetic reflection characteristic of a high-light-transmitting double-layer metal mesh are organically combined, and the multilayer graphene mesh film is arranged at two sides of the double-layer metal mesh to form a multilayer stacked structure; the double-layer metal mesh is used as a transparent reflecting layer, and N layers of graphene mesh films separated by transparent mediums are used as transparent absorbing layers; the structure can enable radio frequency radiation at two sides of the device to pass through the absorbing layers for many times to be strongly absorbed, bidirectional strong shielding and low reflection characteristics are realized, and visible light only penetrates through the stacked structure only once and a high light transmittance is achieved; and the electromagnetic shielding device solves the problem that an existing transparent electromagnetic shielding method cannot give consideration to bidirectional low electromagnetic reflection, strong electromagnetic shielding and high light transmittance at the same time.

The invention provides a high-wave resistance orientation resistance sliding combination energy dissipation body applied to rock foundation excavation forming. The high-wave resistance orientation resistance sliding combination energy dissipation body applied to the rock foundation excavation forming is characterized by comprising a round table, a hemispheroid and flat inflatable cavities, whereina bus has an angle of 45 degrees with the bottom surface; the upper surface of the hemispheroid is fixedly connected with the bottom surface of the round table, the lower surface of the hemispheroidarches downwards to form a semi-spherical shape, and the diameter is equal to the bottom surface diameter of the round table; and the flat inflatable cavities are formed in the round table and the hemispheroid and in an ellipsoid shape, an interface of the round table and the hemispheroid is used as a symmetric surface, the length direction is the horizontal direction in which the symmetric surface is located, and the width direction is the perpendicular direction in which the axis lines of the round table and the hemispheroid are located. According to the high-wave resistance orientation resistance sliding combination energy dissipation body applied to the rock foundation excavation forming, the operability of energy dissipation body site construction is high, various perpendicular holescan be combined to perform construction, complete reflection of exploded shock waves can be realized, lateral exploding crushing of a cannon hole is effectively increased, cannon bottom damage is avoided, and the foundation surface excavation construction efficiency and exploding quality are greatly improved; and the high-wave resistance orientation resistance sliding combination energy dissipation body applied to the rock foundation excavation forming is particularly applied to excavation forming of a rock foundation surface in the condition of containing water monitor holes.

The invention discloses nano-zinc oxide sun-blocking cream. The sun-blocking cream comprises the following components in parts by mass: 6-10 parts of zinc oxide powder with grain diameter of 100-285nm, 8-13 parts of titanium dioxide powder with grain diameter of 297-500nm, 10-30 parts of monostearate glyceride, 10-13 parts of white oil, 4-6 parts of vaseline, 4-8 parts of dehydrated sorbitan sesquioleate, 7-9 parts of cetanol, 3-7 parts of bee wax, 5-13 parts of glycerinum, 7-10 parts of deionized water, 4 parts of triethanolamine, 1-3 parts of methylparaben and 10-13 parts of traditional Chinese medicine extracted essential solution, wherein the traditional Chinese medicine extracted essential solution with mass percentage of 40 percent is prepared from Chinese angelica, polygonum multiflorum, ginseng, saffron, angelica root, cassia twig and coix seed through superfine grinding, decocting, filtering and concentrating steps.

The invention discloses a silicon-based Longman laser structure with combination of ridge waveguide and two-dimension photon crystal, which comprises the following parts: SOI material, ridge waveguide on the SOI material, P-typed silicon on one side of ridge waveguide, N-typed silicon on one side of ridge waveguide, photon crystal rear reflecting mirror on the rear end of ridge waveguide on the SOI material, photon crystal front reflecting mirror on the input end of ridge waveguide on the SOI material, wherein the photon crystal front end and rear reflecting mirrors and ridge waveguide form laser resonant cavity; the photon crystal reflects all light.

A semiconductor mid-infrared and visible light dual-wavelength transmission type interference test device used for detecting mid-infrared optical components, materials and optical systems comprises adual-band common-path collimation output module, a 10.5-micron semiconductor infrared light interference imaging module and a 635nm semiconductor visible light interference imaging test alignment module. With the device adopted, high-resolution interference test with mid-infrared test precision PV value higher than 0.05lambda, RMS higher than 0.01lambda and system repeatability higher than 0.001lambda can be realized.

An LED arc area light source comprises an LED light bar, a radiating support, and a light guide plate. The light guide plate is in an arc bent structure and comprises a flat portion and an arc bend. The bent inner side of the arc bent structure is the inner side of the light guide plate. The bent outer side of the arc bent structure is the outer side of the light guide plate. The light guide plate comprises a light source input end. The LED light bar is mounted at the tail end of the arc bent structure of the light guide plate. The end, which the LED light bar is mounted at, is an incident end of the light guide plate. The radiating support is disposed at the incident end of the light source and in lap joint with the LED light bar. The radiating support functions in fixing and supporting the whole arc area light source. The arrangement density of light guide points of the bent portion of the light guide plate is smaller than that of the flat portion of the light guide plate. The LED arc area light source with variable shape has the advantages of variable shape and lighting uniformity, is capable of emitting light, and is applicable to more places.

The invention relates to the technical field of augmented reality, and provides a virtual-real mutual reflection method based on augmented reality. According to the invention, real scene modeling is carried out to form a real environment layer; wherein the real environment forms a real object model bg. A virtual object rendering layer forms a virtual object fg; the reflection data of the virtual object is rendered in the real environment to form a virtual-to-real environment reflection layer; meanwhile, the reflection data of the real object model on the virtual object is rendered to obtain areal-to-virtual object reflection layer; and performing virtual-real fusion on the virtual-to-real environment reflecting layer, the real-to-virtual object reflecting layer, the real environment layerand the virtual object rendering layer to obtain a synthesis result with virtual-real object mutual reflection data. Based on the idea of virtual-real fusion, different reflection information is separately processed, then the reflection information is flexibly and rapidly stored by utilizing a multi-layer framework technology, and finally mutual reflection of virtual and real objects is realized.

The invention discloses a preparation method of a fiber material with low-frequency sound absorption and insulation functions. The preparation method comprises steps as follows: natural fibers are treated with alkali and an oxidizing agent and then are mixed with an adhesive solution, and a suspension is prepared; the suspension is poured into a mold, or an elastic film is inserted into the mold in a pouring process, and the fiber material with the low-frequency sound absorption and insulation functions is obtained. According to the preparation method, the natural fibers with wide sources and low cost are selected as raw materials and subjected to alkali treatment and oxidation treatment, paths allowing sound waves to enter the fibers are increased, then the fiber material is directly prepared from the natural fibers in a sub-fiber state under the adhesion action of an adhesive or is prepared from the natural fibers in the sub-fiber state and the elastic film, and the preparation method is simple, green, environment-friendly and low in cost; with the addition of the elastic film, not only can incident sound waves be effectively reflected, but also part of sound energy rings can be absorbed through intermolecular friction under the action of vibration load produced by sound waves, and the good sound absorption and insulation effects are realized.