72results about How to "Lower average reflectance" patented technology

A process for the production of a photocatalytically active self-cleaning coated substrate, especially a glass substrate, which comprises depositing a titanium oxide coating on the surface of the substrate by contacting it with a fluid mixture containing a source of titanium and a source of oxygen, the substrate being at a temperature of at least 600° C. The coated surface has good durability, a high photocatalytic activity and a low visible light reflection. Most preferably the deposition temperature is in the range 645° C. to 7200° C. which provides especially good durability. The fluid mixture preferably contains titanium chloride and an ester, especially ethyl acetate. Also disclosed is a self cleaning coated substrate, especially a glass substrate, having high photocatalytic activity and low visible light reflection and a durable self-cleaning coated glass.

An optical fiber switch in accordance with an embodiment of the present invention includes a first plurality of ports, a second plurality of ports, a first plurality of mirrors disposed on a first surface, and a second plurality of mirrors disposed on a second surface. Each one of the first plurality of mirrors is individually controllable to direct light output from a corresponding one of the first plurality of ports to any one of the second plurality of mirrors. Each one of the second plurality of mirrors is individually controllable to direct to a corresponding one of the second plurality of ports light incident on it from any one of the first plurality of mirrors. Advantageously, optical fiber switches in accordance with embodiments of the present invention may couple more than a thousand input ports to more than a thousand output ports with an insertion loss of less than about 3 decibels.

A transparent film-coated substrate is provided which has a transparent film having a low refractive index, and a less shrinking property; and being excellent in adhesiveness to a substrate or a transparent electroconductive film formed on the substrate, and in the film strength, the water resistance, the chemical resistance, and so forth. The transparent film-coated substrate is constituted of a substrate and a transparent coating film formed on the surface of the substrate, the transparent coating film comprising (i) a matrix containing a silicone having a fluorine-substituted alkyl group, and (ii) inorganic compound particles constituted of a shell, and a porous matter or a cavity enclosed therein, and the porous matter or the cavity being kept unchanged in the formed transparent coating film.

The invention relates to the field of functional composite materials, in particular to a low-reflectivity high-shielding gradient structure foam material and a preparation method thereof. A low-reflectivity high-shielding function of an electromagnetic shielding foam material is achieved by preparing a foam material with different filler through the gradient structure. The low-reflectivity high-shielding gradient structure foam material is prepared by the following steps: preparing graphene loaded ferroferric oxide nanoparticle foam and carbon nanotube foam with oriented foam structures by taking ice crystals as a template separately by means of a liquid nitrogen freeze-drying method; preparing a quadrangle needle-like zinc oxide whisker nanoparticle loaded silver film by blending, pouringand drying; and finally, compounding the three through an adhesive to obtain the electromagnetic shielding foam with the gradient laminar structure. Under the circumstance of reducing reflection of electromagnetic waves effectively, the conductivity and the electromagnetic shielding performance of the compound foam material can be improved obviously, and a target of high conductivity, low reflectivity and high electromagnetic shielding efficiency of the compound foam material is achieved.

A coated substrate, especially a glass substrate, such coated substrate having high photocatalytic activity and low visible light reflection as well as being highly abrasion resistant. Preferably, the coating is a titanium oxide coating, the photolytic activity is greater than 5×10⁻³ cm⁻¹min⁻¹, and coating side visible light reflection is 35% or lower.

A high frequency device for supplying a high frequency power to a load, the high frequency device includes: an oscillating unit that can vary an oscillation frequency; a high frequency power supplying unit that serves as a power source by amplifying an oscillation signal output from the oscillating unit for supplying the high frequency power to the load; a reflected-wave information calculating unit that calculates reflected wave information on a reflected wave power, and outputs the reflected wave information; a frequency control unit that controls the oscillation frequency of the oscillating unit so as to lower the reflected wave information; an impedance adjusting unit that is disposed at a downstream of the high frequency power supplying unit in a power supplying direction, and that has at least one variable reactance element which can be controlled; and an element control unit that controls the variable reactance element of the impedance adjusting unit so as to lower the reflected wave information.

A pane with low energy transmission. The pane has a laminated structure of at least one glass sheet tinted in its mass and preferably having antisolar properties, and at least one sheet of polymer material containing a UV-absorbent, the at least one glass sheet and at least one sheet of polymer material being chosen to give a light transmission factor TLA of less than 60%, an energy transmission factor TE such that the ratio TLA/TE is greater than 1 and a transmission factor TUV less than 0.5%, the total thickness of the pane being preferably between 2.5 and 8 mm. The application of the pane, notably, as a lateral pane, rear window pane, roof or sun roof for transportation vehicle is disclosed.

The invention provides an additive for an alkali environment-protecting type no-alcoholic felting liquid of a mono-crystal silicone chip, which comprises the following components in percent by weight: 0.05 to 1 percent of protein, 0.01 to 1 percent of detergent, 0.001 to 0.003 percent of vitamin, donkey-hide gelatin or tea polyphenol or the combination thereof, and the balance of water. After adopting the additive for the alkali environment-protecting type no-alcoholic solution of the mono-crystal silicone chip and the using method thereof, compared with the condition without the additive for an alkali environment-protecting type no-alcoholic felting liquid of a mono-crystal silicone chip, the felt temperature can be decreased, no isopropanol is required to be used, the felting time is shortened, and the felting effect is obviously improved.

The invention discloses a preparation method of an anti-reflection film. The preparation method comprises the following steps: A, taking silicon alkoxide, an alcohols solvent and a silane coupling agent to be mixed and stirred to obtain a mixed solution A; B, taking an acid catalyst and deionized water to be mixed and stirred to obtain a mixed solution B; C, slowly dropwise adding the mixed solution B into the mixed solution A to obtain silica sol; D, taking the silica sol, hollow silicon dioxide particles and a dispersing agent to be mixed and stirred to prepare and obtain a coating film solution; E, selecting a glass substrate to be polished, washed and dried; F, coating the coating film solution on the glass substrate, leveling, drying and curing to obtain a film layer; and G, putting the glass substrate in an alkaline solution for corrosion, forming concave-convex fabric surface on the surface of the corroded film layer, and then washing and drying to obtain coated glass. The interior of the anti-reflection film prepared and obtained by using the preparation method is of a hollow pore structure, and the concave-convex fabric surface is on the surface of the anti-reflection film, so that the average reflectivity can be reduced by 2% or lower.

Provided are multi-component films useful as optical display filters. The optical display filters include a multi-layer stack that contains at least two dyads (106), i.e. pairs of layres including an electro-conducting layer (104B) and a dielectric space layer (104C), whereby in at least one of the dyads one transparent, organic layer with a refractive index greater than 1.49 is arranged. The filters have high visible light transmittance, low visible light reflection, and provide electromagnetic interference shielding in the range of 100-1000 MHZ.

An apparatus and method for reducing solder pad size in an electrical lead suspension (ELS) to decrease signal path capacitive discontinuities. The method provides a base-metal layer for the ELS. A dielectric layer above the base-metal layer is also provided. A signal conductive layer is provided above dielectric layer. The signal conductive layer carries at least one solder pad portion, wherein both a size of the solder pad portion and an amount of solder applied to the solder pad portion are reduced such that the solder pad to a ground, and solder on the solder pad to adjacent solder on adjacent pads, capacitance are reduced providing low signal reflection losses and a decrease in cross-talk.

The invention relates to a ceramic tile with an electromagnetic wave absorption function and a preparation method of the ceramic tile. The green body of the ceramic tile is prepared from the following raw materials in percentage by mass: 18 to 25 percent of electromagnetic wave absorber, 30 to 50 percent of clay, 10 to 20 percent of feldspar, 18 to 25 percent of quartz, and the sum of the amounts of the raw materials is 100 percent. The ceramic tile provided by the invention has good electromagnetic wave absorption function, the average reflectance in the range of 2 to 18 GHz of the ceramic tile to electromagnetic waves is less than -7.5dB, and the minimum reflectance reaches -16.0dB; the breaking strength is larger than or equal to 5000N, the rupture modulus is larger than 40 MPa; the ceramic tile has an architectural ornament function and the electromagnetic wave absorption function, and has wide application prospect.

The invention discloses a solar glass AR (Anti-Reflection) film coating roll coater comprising a base, a conveying roller group and a conveying belt, wherein the conveying roller group and the conveying belt are mounted on the base; the conveying roller group and the conveying belt are driven to work by a conveying motor; a coating mechanism and a lifting mechanism capable of automatically lifting the coating mechanism are arranged above the conveying belt; the coating mechanism comprises a glue coating roller motor, a glue coating roller, a metering roller motor, a metering roller, an auxiliary roller, a first conveying compression roller and a second conveying compression roller; and the glue coating roller, the metering roller, the auxiliary roller, the first conveying compression roller and the second conveying compression roller are respectively mounted on coating brackets at the both sides above the conveying belt. The solar glass AR film coating roll coater provided by the utility model can be used for uniformly coating; the industrialization is realized by effectively combining a nanometer technology of a client; the light transmittance of glass can be increased by the produced product; the self-cleaning function can be achieved; the conversion efficiency of a photovoltaic cell can be effectively improved; and the solar reflectivity of the glass surface is reduced, so that the solar transmittance is improved.

The present invention is an antireflective film, including: a support base, and a pattern composed of a photoresist material formed on the support base, the pattern having a larger size at a point closer to the support base. The present invention provides an antireflective film that is able to give antireflection effect to decrease the reflection of light, a method of producing the same, and an eyeglass type display.

The invention belongs to the technical field of stealth materials in electronic materials, and discloses a radar-infrared-visible light multi-spectrum camouflage stealth structure and a preparation method thereof. The stealth structure comprises a radar wave-absorbing structure layer, an infrared heat-insulating coating layer, a bonding layer and a wave-transmitting camouflage net layer which aresequentially arranged from bottom to top; the radar wave-absorbing structure layer comprises an upper layer skin, a surface layer honeycomb core, an interlayer skin, a bottom layer honeycomb core, a bottom layer skin and a reflecting layer which are sequentially arranged from top to bottom. The stealth structure not only has good radar wave-absorbing performance in L, S, C, X, Ku and Ka wave bands, but also has infrared and visible light stealth functions. The radar-infrared-visible light multi-spectrum camouflage stealth structure provided by the invention solves the problem of multi-spectrumcamouflage of the wave-absorbing material in the radar wave band, the infrared wave band and the visible light, and meanwhile, the method is simple in process, strong in controllability and relatively low in cost, and has important commercial application value.

The invention relates to a method for preparing a double-layer anti-reflection film for a silicon solar cell and belongs to the technical field of new energy materials. According to the method, a urethane acrylate modified SiO2 film is employed, the urethane acrylate has a urethane bond, the invention is characterized in that a plurality of hydrogen bonds can be formed between polymer molecular chains, the double-layer anti-reflection film has high wear resistance, adhesion, flexibility, high peel strength and excellent low-temperature resistance performance and the excellent optical performance and weather resistance of polyacrylate, a modified second layer anti-reflection film has excellent mechanical wear resistance and flexibility, and the breaking elongation is high. According to theinvention, the silver mirror reaction is used and the annealing treatment is combined, silver nanoparticles are prepared on the surface of a substrate to be a first layer anti-reflection film, the formation of the silver nanoparticles in random distribution is a result of the combined action of metal thermodynamics and kinetics, and when the rapid annealing is carried out, a silver film system acquires sufficient kinetic energy and tends to have nanoparticle structure with a small surface area.

One or more aspects of the disclosure pertain to an article including a film disposed on a glass substrate, which may be strengthened, where the interface between the film and the glass substrate is modified, such that the article retains its average flexural strength, and the film retains key functional properties for its application. Some key functional properties of the film include optical, electrical and/or mechanical properties. The bridging of a crack from one of the film or the glass substrate into the other of the film or the glass substrate can be prevented by inserting a crack mitigating layer between the glass substrate and the film.

The invention relates to the design technique of aero-engine nozzles, in particular to a convergent-divergent nozzle with a stealth function, and aims to at least solve the problem of large occupation of a conventional convergent-divergent nozzle. The convergent-divergent nozzle with the stealth function comprises a convergent segment, a divergent segment and a straight tubular transition throat segment, wherein the end surface of a first inlet end of the convergent segment is circular, the end surface of a first outlet end, parallel to the end surface of the first inlet end, is semi-circular, and the centers of the two end surfaces are on the same plane; the end surface of a second inlet end of the divergent segment is semi-circular, the end surface of a second outlet end, parallel to the end surface of the second inlet end, is circular, and the centers of the two end surfaces are on the same plane; and the straight tubular transition throat segment is connected with the first outlet end in a sealing manner through a third inlet end and connected with the second inlet end in a sealing manner through a third outlet end. The convergent-divergent nozzle with the stealth function is simple in structure, light in weight, high in reliability and convenient to mount, manufacture and lose weight, and can enhance the infrared stealth effect and the radar stealth effect without changing the structure of a plane.

The autofocus apparatus determines a focus position according to a result of sampling an AF evaluated value and drives a lens system to the focus position. This autofocus apparatus further performs a flash in synchronism with a sampling timing of an AF evaluated value.