209results about How to "Reduce light transmission" patented technology

The invention relates to an electromagnetic shielding optical window with a two-double pane metal grating structure and belongs to the optical transparent piece electromagnetic shielding technical field; the electromagnetic shielding optical window is formed by placing two layers of pane metal gratings or metal silk screens with the same structure parameters on two sides of the optical window or a transparent underlay in parallel; a side length of a pane of the two-double pane metal grating is greater than two times of a side length of a pane of the prior monolayer pane metal grating; the space between two layers of pane metal gratings is two to four times of the side length of the pane; compared with the prior monolayer pane metal grating, the optical window adopting the two-double pane metal grating structure does not reduce light transmittance, substantially improves the shielding efficiency of microwaves and millimeter waves, solves the problems that the high light transmittance and strong electromagnetic shielding efficiency can not simultaneously considered in the prior optical window electromagnetic shielding technology and is suitable for electromagnetic shielding in aerospace equipment, security facilities, medical diagnostic instruments and other military and civil optical transparent pieces.

A plastic container suitable for hot-fill food packaging applications is disclosed which is characterized by walls of proportionately decreasing thickness from the mouth of the container to a predetermined collapsible point. The wall thickness is designed such that the container walls will collapse, or deform, only at the collapsible point during cooling after hot-filling of food product or during transportation of the container between locations of varying altitudes and pressures. The container preferably collapses in the base area such that the collapse is not visible to the consumer and also the collapse does not affect stability of the container while in use or during loading and storage. The container of the invention is advantageous in that it requires less plastic material to form than other known hot-fill containers, and also can be formed out of any suitable food-grade plastic material or by any process.

The invention provides a flow cytometric system comprising a first sensor positioned axially to a light source; a channel comprising means for receiving a sample target and interposed between said first sensor and light source; and a second sensor placed at an angle to said first sensor adapted to sense side scattering and/or fluorescent components and said first sensor is adapted to sense a forward scattering component in response to light illuminating the sample target in said channel. In another embodiment the invention provides for a wide dynamic range sensor comprising a plurality of photodiode pixels; wherein at least one or more of said photodiode pixels are voltage biased in one or more of the following modes: photon counting, normal, linear avalanche or Geiger modes, for wide dynamic sensor range operation. By altering the reverse bias voltage, thus putting each photodiode into one of normal, avalanche or Geiger mode, the dynamic range of incident scattering and fluorescent power to which the filter cell array is sensitive to is greatly increased, thus increasing the operational sensitivity and specificity of the cytometric instrument.

The present invention concerns the deposition of fluorine modified, titanium dioxide films (TiO2) onto hot glass by atmospheric pressure chemical vapor deposition (APCVD) using TiCl4 vapor. The invention is also suitable for depositing other metallic oxide films from their metallic halides such as SnCl4, GeCl4, and VCl4. The present invention provides a process that deposits a novel, fluorine modified, titanium dioxide film (TiO2) onto hot glass by atmospheric pressure chemical vapor deposition using TiCl4 vapor. The process uses injection of TiCl4 into a hot, nonoxygen containing carrier gas and blends the carrier gas and TiCl4 vapor with an oxygen containing gas stream containing a haze reducing quantity of a fluorine containing compound before contacting a surface of hot glass with the blended mixture. The process is capable of depositing a fluorine modified, TiO2 film at deposition rates exceeding 900 Å per second. The crystalline phase of the fluorine modified film is essentially anatase. The film has a haze of less then 1% and a refractive index of greater than or equal to about 2.48. Also provided is an apparatus for practicing the process and a novel coated glass.

The invention provides a method of cleaning greenhouse roofs mechanically to remove the accumulation of dust and grit. The method comprises at least one dust cleaning device moving over a soft roof The cleaning device is controlled to follow the irregular surface of the soft roof with limited pressure to avoid damage. The invention also provides a dust-cleaning system to remove dust and grit from the soft roof.

The invention discloses a method for manufacturing a transparent thin-film solar cell component. The method comprises a process of manufacturing a transparent substrate, a first electrode layer, a photoelectric translating cell area and a back electrode layer and is characterized in that the back electrode layer is made from a high-permeability and high-conductivity transparent conducting film, wherein the conducting film consists of a first layer of transparent conducting sull, a metal film and a second layer of transparent conducting sull, which are sequentially deposited on the photoelectric translating cell area. The thickness of the metal film is only 5 to 30nm, so the metal film has good light transmittance. Compared with the prior art, the method has the advantages of simple manufacturing process, low cost of raw materials and good light transmittance, is suitable for mass production and has very wide market prospect.

The present invention provides a microscale pressure sensor that exhibits high sensitivity in a small form factor. The sensor is a bridged device in which a photonic crystal waveguide, surrounded by a photonic crystal slab, is suspended over a dielectric substrate. Under applied pressure, the photonic crystal waveguide is deflected toward the substrate, causing a decrease in optical transmission across the waveguide due to the coupling of the evanescent field of the guided mode to the dielectric substrate. In a preferred embodiment, the waveguide is coupled to a photonic crystal microcavity, which increases evanescent coupling.

The invention discloses an anti-fogging preservative film, which can be in a single-layer structure and is mixed by the following ingredients in percentage by weight: 0.2-3% of anti-fogging agent, 42-99.6% of LLDPE (Linear low density polyethylene), 0-50% of MLLDPE (Metallocene linear low density polyethylene) and 0.2-5% of tackifier. The anti-fogging preservative film also can be in an A/B type double-layer structure and is composed of 10% of layer A and 90% of layer B in percentage by weight, or is composed of 20% of layer A and 80% of layer B, or is composed of 30% of layer A and 70% of layer B. The anti-fogging preservative film also can be in an A/B/C three-layer structure and is composed of 10% of layer A, 80% of layer B and 10% of layer C in parentage by weight, or is composed of 20% of layer A, 60% of layer B and 20% of layer C or is composed of 30% of layer A, 40% of layer B and 30% of layer C. No matter the anti-fogging preservative film is in the single-layer structure, the double-layer structure and the three-layer coextrusion structure, the preservative film has an anti-fogging effect because the antifogging agent is added into the raw material so as to avoid generating fog on the surface of the preservative film, which is convenient for consumers to clearly see the preserved commodity.

Release liner forming structures and methods of making and using the same. The methods of making the release liner include thermoforming and sheet bending. The flexible release liner may be used in conjunction with a rigid, transparent supporting surface. The release liner may be developed from a flexible sheet formed into a deformable resin fluid vat. A release layer, and additional structure if desired, can be formed of or include plastic, such as polyolefin or fluoropolymer. In some instances, the polyolefin is, or includes, polymethylpentene or a fluropolymer is fluorinated ethylene propylene. The optical and other properties of the release layer can be altered with treatments and other materials to, for example, reduce over-penetration of a light beam or deform a release layer.

The invention discloses a master batch composition, a compound board and a preparation method of the compound board, and a refrigeration plant. The master batch composition comprises 20-40 parts by weight of a matrix resin which is selected from HIPS (High Impact Polystyrene), 30-50 parts by weight of a flexibilizer which is selected from at least one of SBS (Styrene-Butadiene-Styrene), butadiene styrene rubber, naphthenic oil, PE-g-PS (Polythene-g-Polystyrene), POE-g-PS (Polyolefin-g-Polystyrene), EPDM-g-PS (Ethylene-Propylene-Diene Monomer-g-Polystyrene), 3-20 parts by weight of pigment, 0-10 parts by weight of a brightener, 0-3 parts by weight of an anti-light and oxygen ageing agent and 5-20 parts by weight of an antistatic agent. Thus, the master batch composition can effectively prepare a liner and can further increase the strength of the surface of the liner, increase the anti-cracking ability and particularly the resistance to chemical corrosions such as oils, cleaning agents and the like, increase the weather resistance and the surface gloss and increase the antistatic and dirt-proof functions, so that the liner is easier to clean.

An optical power limiting and switching device comprises at least one plate made of transparent dielectric material, and a thin limiting solid mixture coated on one side of the plate. Upon being exposed to an optical power beam having a power level exceeding a predetermined limit power, the layer of solid mixture limits the power transmission by scattering out part of the impinging energy. When the power increases to the damage threshold, the solid mixture forms a plasma or catastrophic breakdown, damaging the solid mixture material and thereby rendering the portion of the plate surface under the impinging beam opaque to light.

A flat panel display has an optically-transparent electrically-conductive layer, especially an indium tin oxide layer, directly formed on an outer front surface of a liquid crystal display (LCD) assembly having a front plate, a rear plate, and a layer of liquid crystal material interposed between said front and rear plates. The optically-transparent electrically-conductive layer is preferably uniform and functions as an integral heater when connected to a direct current power source.

A liquid crystal display device includes a liquid crystal display element including a first alignment film and a second alignment film and a liquid crystal layer that is provided between the first alignment film and the second alignment film, wherein the first alignment film includes a compound in which a polymer compound that includes a cross-linked functional group or a polymerized functional group as a side chain is cross-linked or polymerized, the second alignment film includes the same compound as the compound that configures the first alignment film, and the formation and processing of the second alignment film is different from the formation and processing of the first alignment film and when a pretilt angle of the liquid crystal molecules which is conferred by the first alignment film is [theta]1 and a pretilt angle of the liquid crystal molecules which is conferred by the second alignment film is [theta]2, [theta]1>[theta]2.

The invention provides a liquid crystal device and a 3D printing system. The liquid crystal device comprises a first liquid crystal box and a second liquid crystal box which are parallel to each otherand arranged in an overlapped mode. The first liquid crystal box is a bi-stable liquid crystal box. Through the strong reflection ability of the first liquid crystal box on light under the powered-off condition and the blocking effect of the second liquid crystal box on the light under the powered-off condition, the light transmissivity is decreased jointly, the black state is generated, the transmissivity of the black state is decreased, thus the contrast ratio of the liquid crystal device can be increased, and the printing accuracy of the 3D printing system can be improved.

The invention discloses a fitting method of blade surface data. The method comprises the steps of the fixing of centers and radiuses of intake and exhaust sides, the fixing of arcs in polynomial fitting blade body surface and blade surface, and the fixing of the maximum thickness value of the blade body surface. According to the method,The repeated computing amount and the computing time of designers are greatly reduced, the computation of the blade surface data is enabled to be accomplished in seconds, the whole bade development time is shortened by one third, the data accuracy and the jig design accuracy of blade surfaces are improved, the precision forging technology is improved, and the requirements of modern digital machining equipment are met. Blades machined through the fitting method is smooth in solid surfaces, the phenomenon of back which usually occurs in traditional blade bodies manually adjusted can not occur, the blade body profile line of a blade forge piece designed on the basis of the surface is smooth, a final die cavity is not required to be repeatedly repaired, and the forming quality of the blade forge piece is improved.

The invention discloses an anti-haze window gauze and a preparation method thereof. The widow gauze comprises in sequence a receiving layer, a gel layer, a polymer nanofiber layer and a protection layer which are four layers. The receiving layer is made by metal net, non-woven fabric or woven fabric. The receiving layer is glued to the polymer nanofiber layer through the gel layer. The thickness of the polymer nanofiber layer is 0.1-100 millimeter. The mesh diameter is 50-2000 nanometers. The protection layer is non-woven fabric and woven fabric. The anti-haze window gauzepossesses good anti-haze effect. The cleaning rate of PM2.5 is as high as more than 99%. The air permeation and light transmission are excellent. The window gauze is anti-wearing and anti-scraping, has an enduring PM2.5 filtration effect. The invention further provides a preparation method of the anti-haze window gauze. The method can use the nanofiber prepared by using various methods in the prior art as the material for the production of the anti-haze gauze.

The invention relates to an organic solar cell and a preparation method thereof. The organic solar cell consists of a transparent substrate, a cathode, an electron transport layer, an optical activation layer, a hole transport layer, an anode and is characterized in that the electron transport layer includes a modification layer and a PEDOT:PSS layer; and the modification layer is made from a material containing amino. According to the preparation method of the electron transport layer, a PEDOT:PSS solution is paved on the surface of the cathode cleaned clearly, and spinning and coating and spin-dry processing are carried out and then annealing is carried out; and the modification layer material solution coating is carried out in a spinning mode and is drying in a spinning mode and then annealing is carried out, thereby obtaining the electron transport layer. According to the invention, the surface of the PEDOT:PSS film is coated with the modification layer material containing amino in a spinning mode, thereby reducing the PEDOT:PSS work function; and thus the energy level relation between all layers is met, so that the PEDOT:PSS layer can be converted into the state beneficial to electron transport. With the alkaline modification layer containing amino, the acid PEDOT:PSS layer can be neutralized, thereby reducing corrosion to the ITO and hygroscopicity and improving stability. Flexible reel-to-reel commercial production of the organic solar cell can be realized well based on normal-temperature preparation. Moreover, the operation is simple; the manufacturing cost is low; and the production efficiency is high.

The invention relates to a gear-shaped parallel composite elastic fiber and a preparation method thereof. The preparation method comprises the steps of carrying out melt spinning on a component A anda component B through a composite spinning assembly to obtain a gear-shaped parallel composite elastic fiber, wherein main materials of the component A and the component B are respectively an elastomer and a non-elastomer, the composite spinning assembly is internally provided with two melt flow channels and a co-extrusion flow channel, and the component A and the component B get into the co-extrusion flow channel respectively through the two melt flow channels and are then extruded from a spinneret orifice. The outer edge of the cross section of the spinneret orifice is composed of double C,wherein the endpoints of the double C are mutually connected, the double C or one of the double C are/is a non-smooth curve, and the shape is identical to the edge of an outer gear. The prepared fiberis composed of a part A and a part B, wherein the part A and/or the part B are/is added with an anti-ultraviolet material and/or functional particles. The gear-shaped parallel composite elastic fiberis good in shape-keeping performance, anti-perspective performance and anti-ultraviolet performance, and the preparation method is simple.

The invention relates to an efficient sunshade double-color tent material. The tent material sequentially comprises a white polyvinyl chloride (PVC) film, a black PVC lightproof film, base cloth and a PVC bottom film from top to bottom; the tent material is prepared by the following steps: starching the double sides of the base cloth, drying and heating; then, synchronously sticking the base cloth together with the preheated white PVC film, the black PVC lightproof film and the PVC bottom film; embossing, trimming and reeling. The efficient sunshade double-color tent material provided by the invention has the characteristic of being used at the both sides; the white PVC film has good ink absorption, thus being used for jet drawing; the black PVC lightproof film has excellent lightproof property, thus being capable of preventing the transmission of sunlight and ultraviolet rays and further effectively achieving the effects of sun-shading and heat insulation; the red PVC film is obtained by adding pigment and calendaring molding, thus having good color fastness to water and color fastness to sunlight. After the technology of synchronously sticking the three films and the one piece of cloth is adopted, the processing flow is simplified, the production efficiency is improved, and the stripping fastness is more reliable.

The invention discloses a backlight module and relates to the technical field of display, in particular to the backlight module and a liquid crystal display device. The backlight module comprises a middle frame forming a rectangular frame, a support, a diaphragm and a light guide plate. The middle frame comprises a side wall and a supporting part extending in the perpendicular direction of the side wall, and the supporting part comprises an upper surface, a lower surface opposite to the upper surface and a side surface. The support comprises a first part and a second part extending along one end of the first part in the direction perpendicular to the first part. The diaphragm comprises a diaphragm display part and a diaphragm installation part. The light guide part comprises a light-in surface and a light-out surface. The first part is formed between the light-in surface of the light guide plate and the side surface, the second part is formed on the lower surface, a backboard is fixedly connected with the lower surface, the light guide plate is attached to the backboard, the diaphragm display part is formed on the light-out surface of the light guide plate, an insertion tongue is arranged between the first part and the side surface in an inserted mode, and the upper end of the first part is arranged in a through hole in a penetrating mode. By means of the backlight module, the fixing firmness of a liquid crystal panel is improved.