161 results about "Glass spheres" patented technology

This invention relates to the field of photovoltaic power generation technology and discloses a photovoltaic panel concentrating device and its concentrating method. The device includes a main body, with guide rods fixedly connected to the four corners of the top of the main body. A concentrating plate is rotatably connected to the end of each guide rod away from the main body, and a flexible ring rotatably connects the four concentrating plates. When the four concentrating plates rotate, the rotating plates cause a hollow frame to rise via a rotating plate. As the hollow frame rises, it causes a central glass sphere to rise synchronously and extend beyond the top of the concentrating plate. When the four concentrating plates form a semicircle around the glass sphere, sunlight from different directions can be concentrated onto the photovoltaic panel through the circular glass sphere, thereby enhancing the light intensity received by the photovoltaic panel and improving its power generation efficiency.

The wide-angle lens comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from an object plane to an image plane along an optical axis, the first lens is a glass spherical lens with negative focal power, the object side face of the first lens is a convex face, and the image side face of the first lens is a concave face. The second lens is a plastic aspheric lens with negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface. The third lens is a plastic aspheric lens with positive focal power, the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface. The fourth lens is a plastic aspheric lens with positive focal power, the object side surface of the fourth lens is a convex surface or a concave surface, and the image side surface of the fourth lens is a convex surface. The glass spherical surface and the plastic aspheric surface are matched and combined, the resolution is improved, the total axis length is smaller than 10.5 mm, the aperture F can reach 1.6, the field angle FOV can reach 183 degrees, the relative illumination can reach 50%, and the lens has the advantages of being large in aperture, ultra-large in field angle, small in size and high in illumination.

The invention relates to an ultra wide angle pick-up lens suitable for a vehicle-mounted OMS system, an optical system of the lens is composed of a first lens, a second lens, a diaphragm, a third lens, a fourth lens and a fifth lens which are sequentially arranged from left to right along a light incident light path, the first lens is a meniscus concave negative lens, the second lens is a meniscus concave negative lens, and the diaphragm is a meniscus concave negative lens. The third lens is a biconvex positive lens, the fourth lens is a biconvex positive lens, the fifth lens is a meniscus concave negative lens, the fourth lens and the fifth lens form an achromatic doublet lens, the first lens and the third lens are both made of glass materials and are spherical lenses, and the second lens, the fourth lens and the fifth lens are all plastic aspheric lenses. By adopting the glass-plastic mixed optical structure of the two glass spherical lenses and the three plastic aspheric lenses, the advantage of aberration correction of the aspheric lenses is brought into full play, high-definition imaging is met, the lens outer diameter is smaller, the optical total length is shorter, and miniaturization of the lens is ensured.

The utility model discloses small-scale test equipment for synthesizing a PVC (Polyvinyl Chloride) lubricant, which comprises a spherical glass spherical tank, the lower half part of the glass spherical tank is placed in a heater, the top of the glass spherical tank is vertically provided with a central through pipe and side through pipes arranged around the central through pipe, and the side through pipes are used for introducing nitrogen into the glass spherical tank; a stirring motor is arranged right above the central through pipe, a stirrer is mounted at the lower end of a rotating shaft of the stirring motor, and the stirrer extends into the glass spherical tank from the central through pipe. According to the utility model, various raw materials can be conveniently and quantitatively added into the glass spherical tank according to requirements, and the raw materials are fully mixed by stirring, so that production conditions are accurately simulated in advance for testing before production.

High impact and penetration resistant lightweight composite panels include a foam core and an impact and penetration resistant protective layer on at least a portion of the lightweight composite panel. The foam core is a polymer and / or inorganic foam layer or sheet having first and second surfaces. A fiber mesh reinforced cementitious layer can cover one or both surfaces of the foam core. Example polymer foam cores include extruded polystyrene foam, expanded polystyrene foam, polyisocyanurate foam, or polyurethane foam. Example inorganic foam cores include perlite, ceramic microspheres, hollow glass spheres, glass foam, ceramic foam, expanded silica gel, porous wollastonite, urea-silicate foam, SiOC / SiC foam, refractory foam, and graphene. The impact and penetration resistant protective layer can be formed from polyurea, polyurethane, polyurea-polyurethane hybrid, polyaspartic, polymer-modified mineral binder, or hybrid resin-mineral composite. The protective layer can include a tightly woven scrim and / or a slip resistant filler embedded in the polymer.

A colored bilayer sub-ambient radiative cooling coating designed to enhance solar reflectance and aesthetic coloration is introduced. The coating includes a white bottom layer containing TiO2 or ZrO2 nanoparticles, and hollow glass spheres dispersed in a polymer matrix, and a colored top layer containing SiO2 microspheres and fluorescent pigments selected from Sr2Si5N8:Eu2+, Y3A15O12:Ce3+, (Ba,Sr)SiO4:Eu2+, or SrO·Al2O3:Eu phosphors dispersed in a polymer matrix. This bilayer structure achieves an effective solar reflectance of at least 90% and reduces surface temperature by at least 3° C. compared to ambient air, providing energy-efficient cooling with aesthetic appeal.

The invention relates to the technical field of photovoltaic power generation, and discloses a photovoltaic panel light condensation device which comprises a main body, guide rods are fixedly connected to the four corners of the top of the main body respectively, light condensation plates are rotationally connected to the ends, away from the main body, of the guide rods, and flexible rings are rotationally connected among the four light condensation plates. When the four light gathering plates rotate, the rotating light gathering plates can drive the hollow frame to ascend through the rotating plate, when the hollow frame ascends, the glass ball body in the middle can be driven to ascend synchronously, and the glass ball body extends out of the tops of the light gathering plates; sunlight from different directions can be gathered on the photovoltaic panel through the circular glass ball body, so that the illumination intensity received by the photovoltaic panel is enhanced, and the power generation efficiency of the photovoltaic panel is improved.

An optical system of the lens is composed of a first lens, a second lens and a third lens which are sequentially arranged from left to right along a light incident light path, the first lens is a plano-convex lens with positive focal power, the object side face of the first lens is a convex face, and the image side face of the first lens is a plane; the second lens is a meniscus lens with positive focal power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the third lens is a meniscus lens with negative focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the first lens is a glass spherical lens, and the second lens and the third lens are plastic aspheric lenses. A glass-plastic mixed optical system is formed by one glass spherical lens and two plastic aspheric lenses, and the lenses have high resolution, low distortion and low temperature drift by reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens, the axial distance between the lenses and the like, and can clearly image at the temperature of-40 DEG C to 105 DEG C; the total length of the lens is greatly shortened, and miniaturization requirements are met.

This invention discloses an optical lens comprising ten lenses arranged sequentially along the optical axis from the object plane to the image plane. The first lens is a glass spherical lens with negative optical power; the second lens is a plastic aspherical lens with negative optical power; the third lens is a plastic aspherical lens with positive optical power; the fourth lens is a plastic aspherical lens with negative optical power; the fifth lens is a glass spherical lens with positive optical power; the sixth lens is a glass spherical lens with positive optical power; the seventh lens is a glass spherical lens with negative optical power; the eighth lens is a glass spherical lens with positive optical power; the ninth lens is a plastic aspherical lens with negative optical power; and the tenth lens is a plastic aspherical lens with positive optical power. Through this arrangement, and by rationally combining the optical power, position, shape, and material of each lens, a confocal infrared optical lens with ultra-large light transmission, a large target area, and an ultra-wide angle is designed.

The invention discloses a starlight-level high-definition optical lens, which belongs to the technical field of optical lenses and comprises a first lens, a diaphragm, a second lens, a third lens, a fourth lens and a photosensitive chip which are sequentially arranged along an optical axis from an object plane to an image plane, and the first lens, the third lens and the fourth lens are plastic aspheric lenses. The second lens is a glass spherical lens; the focal lengths of the first lens, the second lens, the third lens and the fourth lens are negative, positive, positive and negative in sequence. According to the optical lens, the FNo. is 1.6, the resolution reaches more than 4 million pixels by 80%, night vision confocal and purple halo weakening are achieved, and the cost is low.

The utility model relates to the technical field of recreation facilities, in particular to a globe-shaped astronomical swivel chair which comprises a base rail, a supporting frame arranged in the middle of the base rail, a rotating frame arranged above the supporting frame through a bearing, a glass ball arranged on the inner side of the rotating frame through a bearing, and rotating frames arranged on two sides of the rotating frame. Rollers are mounted at the bottom of the rotating frame through bearings. According to the astronomical swivel chair in the shape of the globe, tourists can drive the rolling wheels through the pedal plate to freely roll on the base rail so as to control the rotation of the rotating frame and the glass ball body, and the sense of participation and interactivity of the tourists are greatly enhanced through the active operation mode. The map layer installed on the surface of the glass sphere enables tourists to clearly see geographic features such as mountains, rivers, national boundaries and the like on the surface of the earth in the rotating process, teaching is achieved through lively activities, and the knowledge level of the tourists is improved. The seat arranged on the outer side of the rotating frame is reasonable in design and accords with the human engineering principle.

The invention relates to the technical field of optical imaging, in particular to a low-cost large-aperture high-definition vehicle-mounted lens and an imaging method thereof.The optical system of the lens is composed of a first lens body, a second lens body, a third lens body, a diaphragm, a fourth lens body, a fifth lens body and a sixth lens body which are sequentially arranged from the object side to the image side along the optical axis; wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are glass spherical lenses, and the sixth lens is a glass aspheric lens. The lens material is reasonably selected, and the focal power, the surface type and the diaphragm position of each lens are reasonably distributed, so that the lens has the advantages of large aperture, high resolution, athermalization function, large clear aperture, high light transmission capability and bright and clear imaging pictures in different light environments; meanwhile, short-wave chromatic aberration is considered, and it is guaranteed that the imaging picture does not have the purple edge phenomenon.

An optical system of the wide-angle lens is composed of a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens, the first lens is a meniscus concave negative lens, the second lens is a meniscus concave negative lens, the third lens is a biconvex positive lens, and the sixth lens is a biconvex positive lens. The fourth lens is a biconvex positive lens, the fifth lens is a meniscus concave negative lens, the sixth lens is a biconvex positive lens, the fourth lens and the fifth lens form a bonding lens, the first lens and the third lens are glass spherical lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are all plastic aspheric lenses. The two glass spherical lenses are matched with the four plastic aspheric lenses for use, compared with an all-glass system, the system mass is lighter, compared with an all-plastic system, the optical performance stability is higher, and meanwhile the cost is reduced while the system adapts to the environment; and the imaging angle of an object is greater than 130 degrees.

This utility model discloses a broadband imaging lens, comprising a lens group disposed inside the lens barrel. The lens group, arranged sequentially along the optical axis from the object plane to the image plane, includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, all of which are positive diopter glass spherical lenses. The first lens has a convex object-side surface and a concave image-side surface; the second lens has a convex object-side surface and a concave image-side surface; the third lens has a convex object-side surface and a concave image-side surface; the fourth lens has a convex object-side surface and a concave image-side surface; and the fifth lens has a convex object-side surface and a convex image-side surface. This broadband imaging lens has an EFL of 50mm, a spectral range of 400–1000nm, weighs less than 100 grams, has a center MTF of 32lp / mm > 0.5, and an edge MTF of 32lp / mm > 0.3. It exhibits high image quality, small size, low cost, and the lens head is also waterproof and dustproof.

The invention relates to a DMS optical lens based on an infrared image, an optical system of the lens is composed of a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from left to right along a light incident light path, and a diaphragm is arranged on an S1 surface of a lens L1. Wherein the first lens is a biconvex positive lens; the second lens is a plano-concave negative lens; the third lens is a meniscus convex positive lens; the fourth lens is a meniscus convex positive lens. By reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens, the axial distance between the lenses and the like, the design meets the imaging performance requirement of the lens, and meanwhile, the total length of the lens and the radial size of each lens are reduced by adopting the structural form of an all-glass spherical lens, so that the imaging performance of the lens is improved. The purposes of lens group miniaturization and cost reduction are achieved.

The application discloses a fixed focus lens, comprising: a first lens with negative refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a diaphragm, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, a seventh lens with positive refractive power, and an eighth lens with negative refractive power arranged in sequence along an optical axis from an object side to an image side; wherein the fifth lens and the sixth lens are cemented; the first lens, the fourth lens, the fifth lens, and the sixth lens are all glass spherical lenses, and the second lens, the third lens, the seventh lens, and the eighth lens are all plastic aspherical lenses. The 4G4P combination can well correct aberration, reduce distortion, ensure good image quality, improve resolution, and the total optical length is less than or equal to 15 mm.

The invention provides a prime lens. The prime lens comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with focal power, a fourth lens with positive focal power, a fifth lens with focal power, a sixth lens with focal power and a seventh lens with focal power which are sequentially arranged from the object space to the image space along the optical axis. The first lens has focal power, the second lens has focal power, the eighth lens has focal power, the ninth lens has positive focal power, the prime lens comprises five glass spherical lenses and four plastic aspheric lenses, the second lens, the third lens or the seventh lens, and the eighth lens and the ninth lens are plastic aspheric lenses. The aperture of the prime lens provided by the invention is 0.864, the maximum field angle is 140.24 degrees, the imaging target surface phi is greater than or equal to 9.2 mm, the prime lens can be matched with a 1 / 1.8 inch chip, and the requirements of large aperture and large field angle are met.

The utility model provides a glass ball grading cooling device which comprises a machine frame, a grading screen, a cooling fan and a ball storage bin, the grading screen is obliquely installed in the machine frame, glass balls with different diameters are screened out, one end of the grading screen is provided with a connector, the cooling fan is installed on one side of the machine frame, and an air outlet of the cooling fan is communicated with the connector through a pipeline. The ball storage bin is installed on the machine frame and located on the top of the classifying screen, and the ball storage bin receives the formed glass balls and then discharges the glass balls to the classifying screen. According to the graded cooling equipment for the glass balls, the grading screen is combined with the cooling fan, and the inclined grading screen is arranged, so that the glass balls are synchronously cooled in the grading process, the adhesion of the glass balls is effectively avoided, and the grading efficiency is improved; a driving mechanism and an elastic supporting piece are arranged, so that the classifying screen can swing stably, and the classifying efficiency and the stability of the equipment are further improved; and through the design of multiple layers of screens, accurate grading of glass balls with different diameters is achieved, and the grading precision is improved.

The invention relates to the technical field of building materials, in particular to an energy-saving and noise-reducing composite material and a preparation method and application thereof. The energy-saving and noise-reducing composite material comprises a reflective layer and a matrix layer which are tightly jointed, the base body layer is formed by pressing and curing a base body material; the base material is composed of aggregate with the particle size of 1-3 mm, aggregate with the particle size of 3-5 mm and wollastonite mineral fibers with the length of 2-4 mm. The reflective layer is formed by curing a reflective material; the reflective material is composed of quartz sand with the particle size of 0.1-0.3 mm, pearl powder with the particle size of 50-100 [mu] m and glass bead powder with the particle size of 100-150 [mu] m. The composite material is provided with irregular-aperture through holes with the aperture covering 0.2-1 mm. The invention also discloses a preparation method and application of the energy-saving and noise-reducing composite The technical problems of tunnel closed reverberation noise reduction and illumination energy saving are solved, the high diffuse reflection rate and reverberation noise reduction of a tunnel wall material are cooperatively achieved, and the comfort and safety of a tunnel closed space are improved.

To provide a health appliance which is used by pressing it against the body of a user, can be used repeatedly or for a long period of time by keeping it in a good sanitary state after use, and is suitable for both so-called warm-sensation massage and cool-sensation massage. [Solution] The health device 100 comprises a cloth-like main body 1 made of woven or nonwoven fabric, and an inner content 3 wrapped in the main body and consisting of at least one of natural stone beads, artificial stone beads, synthetic resin spheres, or glass spheres.

This utility model discloses an automotive optical lens, comprising a first lens with negative optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with positive optical power, an aperture stop, a fifth lens with positive optical power, a sixth lens with negative optical power, and a seventh lens with positive optical power, arranged sequentially along the optical axis. The first, second, third, fourth, sixth, and seventh lenses are all glass spherical lenses, while the fifth lens is a glass aspherical lens. This utility model adopts a 6G1GM optical system structure, achieving dual-spectrum operation of visible and infrared light, with a diagonal field of view of 175°, a total length of less than 17mm, and a compact structure, featuring a large field of view and miniaturization. Furthermore, the use of all-glass lenses ensures stable performance at high and low temperatures, meeting the requirements of stable operation from -40℃ to 85℃, making it suitable for automotive applications.

The invention discloses a super-starlight-level high-definition optical lens, and relates to the technical field of optical lenses. The invention relates to a super-starlight-level high-definition optical lens. The number of lenses with focal power in the super-starlight-level high-definition optical lens is eight. The optical lens is sequentially provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens from an object plane to an image plane in the light direction. The second lens and the third lens are combined to form a balsaming lens, and the fourth lens and the fifth lens are combined to form a balsaming lens; the first lens, the fourth lens and the fifth lens are all glass spherical lenses, and the others are all plastic aspheric lenses. The super-starlight-level high-definition optical lens provided by the embodiment of the invention meets the requirements of a lens starlight function, no out-of-focus at high and low temperatures, high resolution, night vision confocal and purple halo.

The application relates to a low-cost 8M forward-looking optical system and an imaging method thereof. The optical system has lenses with optical power along an incident light path in sequence, and the lenses are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. A diaphragm is arranged between the fourth lens and the fifth lens, wherein the fifth lens and the sixth lens are tightly connected to form a cemented lens group. The first lens is a meniscus concave negative lens, the second lens is a meniscus concave negative lens, the third lens is a meniscus convex positive lens, the fourth lens is a double-convex positive lens, the fifth lens is a double-convex positive lens, the sixth lens is a double-concave negative lens, and the seventh lens is a double-convex positive lens. The first lens, the second lens, the fourth lens, the fifth lens and the sixth lens are glass spherical lenses, and the third lens and the seventh lens are plastic aspherical lenses. The lens has the advantages of an imaging angle greater than 194 degrees, super-high 8M imaging definition, a large light aperture, low tolerance sensitivity, good high-low temperature stability and the like.

The invention discloses a field-of-view deflectable liquid lens based on a floating diaphragm. The field-of-view deflectable liquid lens comprises window glass, a spherical lens cavity, a baffle, a deflection ring, a liquid inlet and outlet pipe, filling liquid I and filling liquid II. Window glass is arranged above and below the lens cavity, and four baffles with weak magnetism are arranged on the inner wall of the cavity and used for limiting movement of the deflection ring. Wherein the two baffles on the left side limit the maximum inclination angle of the deflection ring. The two baffles on the right side limit the rotation center of the deflection ring. The cavity is filled with two liquids which are mutually insoluble and matched in density, and the deflection ring is located on a liquid-liquid interface of the two liquids. The amount of the filling liquid I and the amount of the filling liquid II are changed by pumping liquid, so that the deflection ring is pushed to incline, and view field deflection of the lens is achieved. And the focal length can be changed at the maximum left-right deflection angle under the action of magnetic force. The liquid lens has the advantages of being simple in structure, easy to drive, low in cost, large in view field deflection range and zoom range and the like.

The invention relates to a small telephoto lens for portable code scanning equipment and a working method of the small telephoto lens. The small telephoto lens is composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged in the light incidence direction, and a diaphragm is arranged between the third lens and the fourth lens. The second lens and the third lens are glued to form a balsaming lens group A, and the fourth lens and the fifth lens are glued to form a balsaming lens group B. According to the invention, the design of six glass spherical lenses is adopted, and the parameters and the on-axis distance of each lens are optimized, so that the optical performance of high resolution and long focal length can be satisfied, and meanwhile, the optical system has the advantages of low distortion and high illumination; and the total length of the lens is smaller, so that the miniaturization requirement of portable code scanning equipment is met.

The application discloses a compact athermal high-definition wide-angle optical system, which comprises, in sequence from an object side to an image side along an optical axis, a first lens with negative focal power, the object side of which is a convex surface and the image side of which is a concave surface; a second lens with positive focal power, the object side of which is a concave surface and the image side of which is a convex surface; a third lens with positive focal power, the object side of which is a convex surface and the image side of which is a convex surface; a fourth lens with positive focal power, the object side of which is a convex surface and the image side of which is a convex surface; a fifth lens with negative focal power, the object side of which is a concave surface and the image side of which is a convex surface; and an infrared filter, which is located between the fifth lens and an imaging surface; the third lens is a glass spherical lens, the first lens, the second lens, the fourth lens and the fifth lens are plastic aspherical lenses, and a diaphragm is arranged between the second lens and the third lens. The full field modulation transfer function (MTF) is greater than 50% at 100 lp / mm, the maximum field of view is 140°<FOV<156°, the total optical length (TTL) is less than 15.1 mm, and the working waveband is 400-700 nm.

The invention relates to a large-aperture high-definition security telephoto lens and an imaging method thereof, and is characterized in that an optical system of the lens has five lenses with focal power, and the five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens and a fifth lens along the incident direction of an optical path; a diaphragm is arranged on the rear side of the first lens; the first lens is a plano-convex positive lens, the object side surface is a convex surface, and the image side surface is a plane; the second lens is a meniscus positive lens, the object side surface is a concave surface, and the image side surface is a convex surface; the third lens is a meniscus positive lens, the object side surface is a convex surface, and the image side surface is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a concave surface; the fifth lens is a meniscus positive lens, the object side surface is a convex surface, and the image side surface is a concave surface; wherein the first lens and the third lens are glass spherical lenses, and the second lens, the fourth lens and the fifth lens are plastic aspheric lenses.

The invention relates to a large-aperture high-image-quality vehicle-mounted front-view lens and a working method thereof, and an optical system of the large-aperture high-image-quality vehicle-mounted front-view lens is composed of a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from left to right along a light incident light path. The diaphragm is arranged between the second lens and the third lens. Wherein the first lens is a glass aspheric lens, and the second lens, the third lens, the fourth lens and the fifth lens are glass spherical lenses. By reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens, the on-axis distance between the lenses and the like, the optical system realizes the design of large aperture, high relative illumination, low temperature drift and lower tolerance sensitivity, and meanwhile, on-axis and off-axis aberrations are well corrected, so that the imaging quality is higher.

The prime lens comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens which are sequentially arranged from an object space to an image space along an optical axis, the first lens is a glass spherical lens with negative focal power, the second lens is a plastic aspheric lens, the third lens is a plastic aspheric lens with positive focal power, the fourth lens is a plastic aspheric lens with positive focal power, the fifth lens is a plastic aspheric lens with negative focal power, and the sixth lens is a plastic aspheric lens with negative focal power. The sixth lens is a plastic aspheric lens with positive focal power, the seventh lens is a plastic aspheric lens with negative focal power, the eighth lens is a plastic aspheric lens with positive focal power, and the ninth lens is a plastic aspheric lens. According to the invention, a 1G8P lens combination is adopted, the low-cost and large-view-field-range lens design which gives consideration to the imaging requirement and the compact structure is realized, and the security and protection monitoring universality requirement can be met.

The present application relates to the technical field of building materials, in particular to an energy-saving and noise-reducing composite material and its preparation method and application. The energy-saving and noise-reducing composite material comprises a tightly bonded light-reflecting layer and a base layer; the base layer is formed by pressing and curing the base material; the base material is composed of 1-3mm particle size aggregate, 3-5mm particle size aggregate and 2-4mm long wollastonite mineral fibers; the light-reflecting layer is formed by curing the light-reflecting material; the light-reflecting material is composed of 0.1-0.3mm particle size quartz sand, 50-100um particle size pearl powder and 100-150um particle size glass sphere microbead powder; the composite material has irregular through holes with a pore size covering 0.2-1mm. The preparation method and application of the above energy-saving and noise-reducing composite material. The present application solves the technical problems of noise reduction and energy saving of tunnel closed reverberation, and cooperatively realizes high diffuse reflectivity of tunnel wall material and reduction of reverberation noise, thereby improving the comfort and safety of the tunnel closed space.