110results about How to "Increase the number of reflections" patented technology

The invention discloses a apparatus and method for adjustable multiple reflection optical absorption, which adopts the principle of multiple reflection to design a optical absorbing pool; light beam multiple reflects by main reflector and two auxiliary reflectors so as to effectively accrete the length of detecting optical path in a small spacing. The multiple reflection optical absorbing pool has compact structure and can do alternative measurement to sample spectrum and background spectrum.

The invention discloses a polycrystalline silicon texturing method which comprises low-temperature high-concentration acidizing fluid texturing, normal-temperature low-concentration acidizing fluid, alkali cleaning, ion removal and passivation. The invention provides more a proper acid treatment fluid and a corrosion texturing process for the polycrystalline silicon texturing to ensure that the removal of a mechanical damage layer on the surface of a silicon slice and the texturing are easier to control, can accurately control the texturing degree of the surface of the silicon slice and the thickness reduction of the silicon slice, shorten the texturing time, improve the texturing yield of a battery, reduce the surface reflectivity, increase the light absorption and the short-circuit current, and improve the photo-electricity conversion efficiency of the battery.

The invention discloses a tire rubber sheet electron radiation crosslinking pretreatment device and a tire rubber sheet electron radiation crosslinking pretreatment method. A conveyor belt used for realizing an arc-shaped conveying track is arranged in a shielding room; based on the ray absorption by the interior wall of the shielding room, the ratio of attenuation generated by multiple times of refraction is increased by increasing the reflection times of rays, and thus, the rays can be absorbed to a maximum degree and the ray leakage can be reduced so as not to pollute the environment and hurt the body the operators. The device mainly comprises a radiation room, the shielding room and the conveyor belt for conveying rubber sheets, wherein an electron accelerator is arranged in the radiation room and above the conveyor belt, and the conveyor belt runs through the radiation room and the shielding room. Ray absorbing plates are adhered on all of the inner walls of the radiation room and the shielding room. The conveyor belt comprises a horizontal conveying part arranged in the radiation room and below the electron accelerator and an oblique conveying part arranged in the shielding room. The oblique conveying part has at least one group of left and right symmetric and vertically bent continuous conveying section.

The invention is a multiple-probe fibre-optical evanescent-wave biosensor, including the laser exciting light path, the fluoescent receiving light path, the sample flow path and the scan system, respectively used to excite the fluorescence of the measured biological substance on the surface of the fibre-optical core wire, receive the fluorescent signal from the fibre-optical and finish the photoelectric conversion, indraft the sample and make the scanning detection on the fluorescent signal on multiple pieces of fiber-optical.

A method for preparing diffusion film includes mixing multiple ball form scattering particle and multiple non-ball form scattering particle in solution with binder for forming a mixed liquid and then coating mixed liquid on a transparent base plate.

The invention discloses an efficient and energy saving laminated thin-film solar cell and a manufacturing method, and belongs to the field of solar photovoltaic manufacture. Sensitive cell materials for absorbing blue, green and red light in solar spectra in a matched manner are selected, and the conversion efficiency of a three-junction thin-film cell is close to that of crystal silicon cells by 15%. The forbidden bandwidth of an intrinsic layer of a top amorphous silicon cell is 1.7-1.8eV, the forbidden bandwidth of cadmium telluride of a middle cell is 1.45eV, and the forbidden bandwidth of a copper indium gallium selenium absorbing layer of a bottom cell is about 1.05eV. Middle layers (7 and 11) are introduced to increase a light path, a light trap is formed, and light absorbing efficiency is improved by front and rear shielding wires (23 and 24). Serial short circuit inside a cell module is decreased, and cost and product reject ratio are reduced.

The invention discloses a double-disc-serial-connecting pump light multi-pass transmission system which comprises a first off-axis parabolic mirror, a first right-angle reflecting mirror group, a first disc laser crystal, a spherical reflecting mirror, a second off-axis parabolic mirror, a second right-angle reflecting mirror group and a second disc laser crystal. The first right-angle reflecting mirror group is placed on a reflecting light path of the first off-axis parabolic mirror. The first disc laser crystal is placed at the focus of the first off-axis parabolic mirror. The second off-axis parabolic mirror and the first off-axis parabolic mirror are arranged symmetrically about a plane alpha which passes through a spherical mirror sphere center. The second right-angle reflecting mirror group is placed on a reflecting light path of the second off-axis parabolic mirror. The second disc laser crystal and the first disc laser crystal are arranged symmetrically about a plane alpha which passes through a spherical mirror sphere center. The invention further discloses a high-power disc solid laser, and stable high-energy laser output is achieved.

The invention provides an optical path folding device. Based on the confocal optical system consisting of a beam input end, an output end, a main plane mirror and a concave mirror, a tilted sub-mirroris introduced on the focal plane to change the reflection angle of the incident light beam, thereby achieving multiple reflections of the light beam in the confocal optical system. The output beam maintains the optical characteristics of the input beam and has a higher optical path volume ratio. Variable optical path can be achieved by rotating the tilted sub-mirror. Parallel input of multiple beams can be realized by adopting a fiber array collimator at the input end. A fiber array collimator is used at the input and output ends, and a part of the pigtail fiber is connected, so that the optical path can be connected in series to achieve a longer optical path.

The invention discloses a polypropylene modified sound insulation composite material and a preparation method thereof. The polypropylene modified sound insulation composite material comprises, in weight percent, 33.8%-88.8% of polypropylene, 10%-60% of modified talcum powder, 0.2% -2% of antioxidants and 1%-6% of additives. The composite material mainly takes the modified talcum powder as a raw material, the modified talcum powder after intercalation modification in a supercritical carbon dioxide state is of a laminated structure in a polypropylene substrate, polymer macromolecules easily enter in the production process of the modified talcum powder, the stripping degree of the modified talcum powder in polypropylene is greatly improved, the reflection frequency of the same weight parts oftalcum powder for sound waves is increased, the composite material has excellent sound insulation effects and better stiffness increasing effects, and sound absorption and sound insulation performances of the composite material are improved.

The invention discloses a triangular structure-based long range spectral absorption cell. The triangular structure-based long range spectral absorption cell comprises a triangular pedestal and a triangular sealing top cover which are mutually correspondingly arranged and folded, the middle portions of the triangular pedestal and a triangular sealing top cover are respectively provided with mounting holes used for mounting an inlet joint and an outlet joint, a triangular reflector composed of a first reflection mirror, a second reflection mirror and a third reflection mirror is arranged between the triangular pedestal and the triangular sealing top cover, the first reflection mirror is provided with light transmission holes, and the triangular reflector, the triangular pedestal and the triangular sealing top cover are mounted in a sealing manner through triangular sealing gaskets at two sides of the triangular reflector. The long range spectral absorption cell effectively avoids the interference effect of lights, fully uses the effective mirror area of the reflector, and substantially improves the reflection frequency of the lights in the absorption cells, so the effective absorption light distance of the lights is realized; and the absorption cell has the advantages of light integral weight, small size, low consumption of a sampled gas, fast gas flow response speed, simplicity in light distance adjustment, and low cost.

The invention relates to a graphene composite wave absorbing material, a method for preparing the same and a coating agent prepared from the graphene composite wave absorbing material. The graphene composite wave absorbing material is made of zeolite and graphene. The graphene composite wave absorbing material, the method and the coating agent have the advantages that excellent wave absorbing performance of the graphene composite wave absorbing material made of microwave-treated reduced graphene oxide (m-rGO) and the zeolite (Na A) by means of composition is discovered, and the graphene composite wave absorbing material is an electric loss type wave absorbing material; the graphene composite wave absorbing material which is a novel full-inorganic wave absorbing material has characteristics of light weight, broad frequency bands and strong absorption, and accordingly the graphene composite wave absorbing material, the method and the coating agent have broad application prospects in future military and civil fields.

The invention relates to a permeability-enhanced off-axis integral cavity structure which comprises a laser, a first endoscope and a second endoscope, wherein the first endoscope and the second endoscope are plane-concave lenses; a concave surface of the first endoscope and a concave surface of the second endoscope are oppositely arranged to form an optical cavity; a plane of the first endoscope is a non-polished surface; the concave surface of the first endoscope is a fine polished surface and is plated with a high-reflective film; and after light beams sent by the laser enter to the concave surface of the second endoscope through a taper hole, the light beams are reflected to the concave surface of the first endoscope and then reflected to the concave surface of the second endoscope, reflection back and forth is repeated, light spots are formed on the concave surface of the first endoscope and the concave surface of the second endoscope, and a large amount of weak light beams transmit out through the high-reflective film of the second endoscope to from required probe light. The permeability-enhanced off-axis integral cavity structure has the advantages that the intensity of the transmitted probe light is high, the structure is simple, and the manufacturing cost and the using cost are low.

The invention discloses a silencer of a compressor and a compressor provided with the same. The silencer comprises an outer shell and an inner shell, wherein the outer shell is internally provided with a cavity, and the top of the cavity is open; the inner shell is arranged in the cavity, and a sound insulating cavity is defined between the inner shell and the outer shell. According to the silencer of the compressor, disclosed by the embodiment of the invention, the inner shell is arranged in the cavity of the outer shell, and the sound insulating cavity is defined between the inner shell and the outer shell, so that reflection times of sound wave in a transmission process can be increased through an air layer of the sound insulating cavity, the air layer of the sound insulating cavity has the effect of additionally adsorbing the sound wave, and the silencer has a good sound insulation effect, and the sound insulation effect of the silencer can be enhanced.

The invention discloses a solar absorbing film. The solar absorbing film comprises a bottom-layer metal sheet Cu, an absorbing layer and an AlN antireflection layer formed through reactive sputtering in sequence, wherein the absorbing layer comprises multiple absorbing period layers; each period layer comprises two layers of effective absorbing layer films; the effective absorbing layer films are metal-layer Ni films and ceramic absorbing-layer TiNxOy-Ni films from top to bottom in sequence; and the metal-layer Ni films are 5-8 nm thick. The invention further discloses a preparation method. The preparation method comprises procedures of pretreatment of the bottom-layer metal sheet, deposition of the absorbing layer and high-vacuum heat annealing; the procedure of deposition of the absorbing layer adopts a three-target direct-current magnetron sputtering method; and the coating deposition is performed with TiO2 having the purity of 99.9 wt%, metal Ni having the purity of 99.99 wt% and metal Al having the purity of 99.99 wt% as sputtering targets. The solar absorbing layer adopts design thoughts of multistage layered structure and component gradient, so that the absorbing layer has both characteristics of multistage layered structure and component gradient; the absorption/emission rate is optimized; and the solar absorbing film also has the characteristics of corrosion resistance and oxidation resistance, the coating working reliability is guaranteed, and the comprehensive performance of a blue titanium selective absorption coating layer is further enhanced.

The invention discloses a method for forming annular halo. The method includes the steps: (a) emitting parallel light by a light source; (b) irradiating a lens (1) with a light guide groove (5) at the bottom by the parallel light; (c) shading the parallel light not entering the lens (1) while irradiating the lens (1) by the parallel light; (d) imaging a refracted ray refracted by the lens (1) by the aid of a screen or similar device; (e) repeating the steps (a) to (d) to form a plurality of light spots by refraction of the lens (1) in a uniformly distributed mode on a concentric circumference at the same time and on the same geometric plane. The middle of the lens (1) is structurally recessed, and the lens (1) is provided with a recessed low point (2). The light spots finally form the annular halo. Diffused light with illumination in graded distribution and uniform gradual change can be manufactured, so that a user feels comfortable and lazy under the light, and the method can be used for hypnotic illumination of a sleep lamp.

The invention provides an optical gas chamber and a method for calculating the total optical distance by the gas chamber, relating to the field of measurement on gas components by a light ray analyzer. The optical gas chamber comprises a gas chamber cavity module and a plane reflection module, wherein the plane reflection module forms a square structure with openings in two ends, the adjacent side surfaces of the square structure are mutually vertical, the square structure is fixed by the gas chamber cavity module which provides to-be-tested gas, a coordinate system is selected according to the shape of the gas chamber structure, and the total optical distance is calculated. The optical gas chamber is simple in structure; the total optical distance of light rays in gas can be effectively obtained by matching with a calculating method, the maximization of light paths in a small space is realized, and the problem of interference caused by overlapping of the light paths can be reduced.

The invention relates to a tunnel type multi-mode microwave resonant cavity with a rotation function. The microwave resonant cavity consists of a hollow hexagonal prism, HFSS (High Frequency Structure Simulation Software) is used for simulating and positioning the positions of four microwave energy feedback holes, four microwave tubes with total 4KW independently feed microwave energy from different directions, the energy distribution of the microwave resonant cavity is improved through electromagnetic wave energy feedback simulation, and microwave energy focus points in the resonant cavity are obviously reduced; meanwhile, a pipeline installation position is designed on the middle position of the resonant cavity, pipelines made of low-microwave adsorption materials including ceramics and glass can be assembled; and the pipeline which finishes being installed can rotate under the driving of a rotation device, and materials in the pipeline can be subjected to even microwave radiation. In the field of environment protection, the microwave resonant cavity is suitable for processing agriculture and forestry waste materials, waste rubber, waste plastics, waste printing circuits and the like, can carry out intermittent batch processing, can be combined with other piece of conveying processing equipment to realize fluidization operation, has the advantages of simple structure and high practical application value and is favorable for industrial popularization.

The invention relates to an extinction structure, a lens barrel, an image capture device and electronic equipment. The extinction structure of the invention comprises a light transmitting part and anextinction part, wherein the extinction part is arranged around the light transmitting part, the extinction part at least comprises an extinction main body, a plurality of first sub extinction parts and a plurality of second sub extinction parts, and the extinction main body is provided with a first surface and a second surface which are arranged oppositely; the plurality of first sub extinction parts are arranged on the first surface at intervals; and the plurality of second sub-extinction parts are arranged on the first surface at intervals, and the plurality of second sub-extinction parts are intersected with the plurality of first sub-extinction parts. The extinction structure has a good extinction effect, and the surface ultra-black appearance effect can be well achieved.

The invention relates to a bent type noise reduction device for a cooling tower. The bent type noise reduction device comprises multiple noise elimination flow deflector sets. Each noise elimination flow deflector set comprises multiple noise elimination flow deflectors. An air inlet in the bottom of the cooling tower and an air outlet in the top of the cooling tower are provided with the multiple noise elimination flow deflector sets correspondingly. All the noise elimination flow deflectors in each noise elimination flow deflector set are mutually parallel and horizontally installed at equal intervals. The noise elimination flow deflector sets on the air inlet are distributed in the vertical direction, and the noise elimination flow deflector sets on the air outlet are horizontally installed. The noise elimination flow deflectors in the same noise elimination flow deflector set are mutually parallel. The bent type noise reduction device is characterized in that the noise elimination flow deflectors are in a bent shape, and the center lines of the noise elimination flow deflectors are of a left-right symmetrical structure. The invention further relates to a stepped noise reduction device for the cooling tower and a corrugated type noise reduction device for the cooling tower.