96results about How to "Good light scattering" patented technology

An LED tube lamp includes a heat sink, an LED substrate, a cover fixed to the heat sink. A light gathering wall arranged between the cover and the LED substrate. The cover further includes a condenser lens, the light gathering wall is configured for reflecting and gathering the light beams emitting from the LEDs, the condenser lens is configured for gathering the light beams reflected from the light gathering wall. The light beams emitting form the LEDs can be controlled substantially in a desired illuminating range after being gathered twice.

The invention relates to a light diffusing agent, a PMMA (polymethyl methacrylate) light diffusing plate and a manufacturing method thereof. The light diffusing agent is a random copolymer of styrene (St) and methacryloxypropylisobutyl polyhedral oligomer silsesquioxane (MAiBuPOSS). The PMMA light diffusing plate comprises the following components in percentage by weight: 97.0-99.5% of polymethyl methacrylate and 0.5-3.0% of light diffusing agent. The refractive indexes of the styrene component and the MAiBuPOSS component in the light diffusing agent differ from the refractive index of PMMA; when passing through a material, a light ray is refracted for many times and becomes bright and soft after passing through a substrate. Meanwhile, the MAiBuPOSS component ensures that the dispersibility of PS (Poly Styrene) in PMMA is remarkably improved, excellent light transmission and light scattering are obtained, and the optical efficacy is high. The PMMA light diffusing plate manufactured by the invention can be used for LED (Light Emitting Diode) illumination lamps, such as a plate lamp, an advertising lamp box, a professional film viewer, a down lamp and the like.

The invention provides a light scattering polycarbonate composite and light scattering materials (such as films, sheets, plates) prepared from the composite. The composite comprises (A) a base material, namely a polycarbonate resin and (B) a scatterer material which can be molten and deformed into polymer in the forming process of polycarbonate, such as acrylonitrile copolymer. The light scattering materials (such as films, sheets, plates) with isotropic scatterning performance or anisotropic (such as linear )scattering performance can be prepared from the composite material, and the requirements of high light transmittance and high haze can be met; and the light scattering materials are suitable for light scattering films, sheets, plates and the like in the field of liquid crystal displays, and the illumination materials of light guide plates, lampshades or advertising light boxes, show windows and the like.

A phosphor includes a sintered body of a ceramic material. The sintered body contains Ce:Y₃Al₅O₁₂ as a main phase and a ceramic material as a subphase. The ceramic material has a refractive index different from that of the main phase. The sintered body has a crystal grain boundary and a void at the crystal grain boundary.

The present invention relates to an photoelectrode and the preparation method thereof, wherein said photoelectrode comprises a substrate and a titania layer composed of a mesoporous titania bead having a diameter of 200-1000 nm, specific surface area of 50-100 m²/g, porosity of 40-60%, pore radius of 5-20 nm, pore volume of 0.20-0.30 cm³/g, and the titania comprised in the bead is anatase titania.

The invention provides a transparent based-membrane and transparent resin layer. At least one of based-membrane and resin layer contains UV absorbers, and the transmissivity of ultraviolet which wavelength is 380nm is set at 60% or less. The surface of resin layer is provides a great amount of irregular objects, the total transmissivity is 85% or more and the diffusion transmissivity is 6% or more.

The invention relates to a fluorinion (F)-doped zinc oxide (ZnO) porous prism array film and a preparation method thereof. The F-doped ZnO porous prism array film is prepared by a low-temperature chemical bath and subsequent heat treatment combined method. The preparation method comprises the following steps of: directly preparing prismatic a Zn(OH)F precursor array film on an electroconductive glass substrate by using mixed aqueous solution of zinc nitrate (Zn(NO3)2) and ammonium fluoride (NH4F) under the condition of low-temperature water bath at the temperature of 70 DEG C; and performing heat treatment at the temperature of 500 DEG C to obtain a ZnO-F prism array film with a nano porous structure. In the nano porous ZnO-F prism array film prepared by the method, the film appearance is uniform; the thickness can be controlled and can reach more than ten mu m; the specific area is large; and a single porous prism has a monocrystal structure. The product has a wide development application prospect in the fields of solar batteries, photocatalysis and the like. Energy consumption is low in the whole synthetic process; equipment is simple; conditions are simple and controllable; and large-scale industrial production is easy to realize.

The invention provides a light scattering thermoplastic polyester resin composition. The thermoplastic resin composition comprises: (A) a transparent matrix material which is selected from polymethyl methacrylate resin and copolymers thereof, such as polymethyl methacrylate, methyl methacrylate-styrene copolymer, methyl methacrylate and methyl acrylate copolymer; and (B) a scattering body material such as polyethylene glycol terephthalate resin. Relative to 100 parts by weight of the matrix material, 1 to 50 parts by weight of polyethylene glycol terephthalate are used, and an average particle size is preferably selected at 0.03 to 20 micrometers. A light scattering plate (membrane and sheet) prepared by using the thermoplastic polyester resin composition can meet the requirements of good light transmittance and high fog scale and is applicable to the fields such as lampshades, skylights, advertising lamp boxes, signage, liquid crystal displays, and the like.

The invention relates to the technical field of LEDs, in particular to a water-based light diffusion coating. The coating is prepared from 20-30 parts of water-based polyacrylic acid resin, 15-20 parts of high temperature resistance organic silicon resin, 5-15 parts of a light diffusion agent, 3-7 parts of an emulsifying agent, 1-1.5 parts of a defoaming agent, 2-7 parts of inorganic pigment, 3-5 parts of an active additive, 2-4 parts of a dispersing agent and 5-15 parts of a mixed solvent. According to the water-based light diffusion coating, the problems of LED lamp glare, light pollution and the like are solved, the light source is uniform, soft and full, the light permeability and light scattering performance are good, the cooling effect is good, and the service life is long.

A method for processing tilting projection structure on a reflector face at least includes providing a substrate forming a photo element layer which is zoned to form multiple ladders with different bottom areas connected with each other; smoothing these ladders to form multiset projections with a tilt angle. This invention uses optical diffraction method and a special light mask to make the applied reflective liquid crystal display screen reach the aim of having both reflecting brightness and wide and angle of field by single exposure.

The invention relates to a TPU/silica gel composite material. The TPU/silica gel composite material comprises a base cloth layer, a first hot melt adhesive layer, a TPU layer, a second hot melt adhesive layer and a silica gel layer which are successively stacked; and the first hot melt adhesive layer and the second hot melt adhesive layer are both TPU hot melt adhesive layers. The provided high-wear-resistance TPU/silica gel composite material is good in wear resistance, and after the high-wear-resistance TPU/silica gel composite material is ground by 1000 revolutions under the pressure of 9kPa, wear is not obvious, moreover, light scattering of the high-wear-resistance TPU/silica gel composite material is obviously higher than that of a silica gel material, and the flame retardance is good. The silica gel layer is thinned until the thickness of the silica gel layer is suitable, is matched with the hot melt adhesive layers, and firmly adheres to the TPU layer, air bubbles are avoided due to tape casting, and therefore, the material has good light scattering property on the premise of good wear resistance.

The invention relates to the technical field of LEDs, in particular to a water-based microbead light diffusion coating. The coating is prepared from 20-30 parts of water-based polyacrylic acid resin, 15-20 parts of high temperature resistance organic silicon resin, 5-15 parts of a light diffusion agent, 3-7 parts of an emulsifying agent, 1-1.5 parts of a defoaming agent, 2-7 parts of inorganic pigment, 3-5 parts of a thickening agent, 2-4 parts of a dispersing agent, 1-5 parts of a diffusion agent and 5-15 parts of a mixed solvent. According to the water-based microbead light diffusion coating, the problems of LED lamp glare, light pollution and the like are solved, the light source is uniform, soft and full, the light permeability and light scattering performance are good, the cooling effect is good, and the service life is long.

A method is provided for depositing a transparent conductive oxide (TCO) layer on a substrate, in which contaminations of the layers of the layer system is reduced through the diffusion of material from the substrate, and whose layer properties in respect to coupling and transmission of light are optimized. For that purpose, a barrier layer, a seed layer and a transparent conductive oxide layer are directly successively deposited on the substrate. Also, a thin-film solar cell is described which comprises such a transparent conductive oxide layer.

The invention provides a styrene-acrylic antibacterial interior wall coating and a preparation method thereof. The styrene-acrylic antibacterial interior wall coating is prepared from the raw materials of: in parts by weight, 20-40 parts of styrene-acrylic emulsion, 6-10 parts of nano titanium dioxide slurry, 4-6 parts of antibacterial nano titanium dioxide, 1-3 parts of ultrafine aluminum carbonate, 8-16 parts of calcined kaolin, 10-20 parts of titanium dioxide, 10-20 parts of ground calcium carbonate, 4-6 parts of talc powder, 1-2 parts of a dispersant, 0.2-0.5 part of a defoaming agent, 0.1-0.3 part of a wetting agent, 1.0-2.5 parts of a film forming assistant, 0.5-0.9 part of a thickener, 1-2 parts of an antifreezing agent, 0.1-0.2 part of a pH regulator and 12-20 parts of deionized water. The styrene-acrylic antibacterial interior wall coating not only has good low temperature stability, water resistance, alkali resistance, scrub resistance, weather resistance, dirt resistance andaging resistance, but also has bacteria resistance and bacteria inhibition, high decorativeness, breathing humidity regulation, environmental protection and other advantages.

The invention relates to a white hollow titanium dioxide microsphere and a preparation method thereof. According to the invention, the particle size of the microsphere is 120-230 nm, and the relative density of the microsphere is 1.31-1.88g/cm<3>. The white hollow titanium dioxide microsphere is prepared from an organic matter copolymer microsphere utilized as a core and tetrabutyl titanate utilized as a precursor through static adsorption and a sol-gel reaction by freeze drying and high temperature roasting at air atmosphere. By using the preparation method provided by the invention, the defects in the traditional method are overcome; and an organic matter microsphere is used as a template so that the prepared white hollow titanium dioxide microsphere is regular in shape, uniform in size and easily controllable in particle size and thickness, and simultaneously the shell and hollow part of the hollow microsphere are different in refraction coefficients and good in light scattering properties due to the hollow structure. The white hollow titanium dioxide microsphere has the advantage of easily available raw materials and the preparation method has the advantage of simple preparation process.

The invention discloses a synthetic method of high-performance mesoporous nano TiO2 as well as application thereof in latex paint, which belongs to the technical field of nano TiO2. The synthetic method comprises the following steps: adding deionized water and glacial acetic acid into absolute ethyl alcohol to prepare a mixed solution; successively dropwise adding tetrabutyl titanate TBOT solution, polyethyleneglycol 400 and cetyl trimethyl ammonium bromide CTAB into the mixed solution in a stirring process, forming a sol system, placing the sol system into a hydrothermal reaction kettle to perform the hydrothermal reaction, obtaining precursor precipitates, successively centrifugally washing, drying and roasting the precursor precipitates, and obtaining the mesoporous nano TiO2 having anordered mesoporous passage. The prepared mesoporous nano TiO2 has high reinforcing performance and high catalytic activity. When the mesoporous nano TiO2 is applied to latex paint, the stability of alatex paint film is improved, a high effect for killing bacteria in indoor air can be realized, the latex paint has a lasting efficacy for resisting bacteria and killing the bacteria, and the indoor hygienic condition is effectively improved.

The invention provides a transparent-conductive-film laminate and manufacturing method therefor, transparent-conductive-film laminate being useful as a surface electrode in manufacture of a high-efficiency silicon-based thin-film solar cell, having a roughness structure excellent in light scattering, and having an excellent effect of optical confinement, and provides a thin-film solar cell using transparent-conductive-film laminate and a manufacturing method for the thin-film solar cell. Transparent-conductive-film laminate has a structure including: an indium-oxide-based transparent conductive film (I) having a film thickness of not less than 10 nm and not more than 300 nm; and a zinc-oxide-based transparent conductive film (II) having a film thickness of not less than 200 nm, and has a surface having a crystalline structure with projections and depressions mixed therein, a surface roughness (Ra) of not less than 30 nm, a haze ratio of not less than 8%, and a resistance value of not more than 30 Ω/sq.

The invention discloses TiO2 microspheres and a preparation method of a TiO2-based photoanode dye-sensitized solar cell, and particularly relates to a TiO2 seed crystal growth and two-phase synthesis method. A three-dimensional microsphere structure is formed by self-assembling one-dimensional nanorods, and the nanorod-self-assembled microsphere structure with the high specific surface area is obtained by controlling the reaction time, the reaction time, the quantity of reaction raw materials, the microsphere size and the specific surface area size. The prepared TiO2 with the high specific surface area is applied in the field of dye-sensitized solar cell photoanodes, the microsphere structure has the high scattering property at the wavelength ranging from 420 nm to 800 nm, and capture of the photoanodes on photons can be promoted; the commercially available 20-30-nm photoanodes prepared from anatase type TiO2 nanoparticles (P25) are optimized and improved by means of the scattering property of the particles and quick electron transportation channels supplied by the nanorod structure, therefore, the light scattering property is enhanced, electron transportation and electron recombination inhibition are promoted, and then the photoelectric conversion efficiency reaching up to 8.62% is achieved.

The invention relates to a hollow titania high color particle electrophoresis used for electrophoretic display and a preparation method thereof, which uses hollow microballoons of acrylate copolymer or styrene polymer as the seeds with the outer layer coated with titanyl hydrate and prepares the corresponding polymer/titanium dioxide microballoons after drying and baking; then TiOx (x is more than 0 and less than 2) microballoon with hollow structure and different colors are acquired by high temperature baking in amine gas, hydrogen gas or argon gas with the relative density of 1.2 to 2.1g/cm<3>, the specific surface ranging from 35 to 95m<2>/g, the outside diameter ranging from 40 to 450nm, the inside diameter ranging from 0 to 300nm and the ratio between the external diameter and the internal diameter ranging from 1:4 to 1:1.6. The hollow titania spherical particle prepared by the invention is characterized by regular shape, smooth surface, even size and easy control of particle diameter, besides, the method also has the advantages of simple preparation process and easy acquired raw materials.