594 results about "Light absorber" patented technology

The present invention is an improved polymeric resin composition comprising units derived from ethylene, from about 20 wt % to about 30 wt % units derived from an α,β-unsaturated carboxylic acid having from 3 to 8 carbons, and optionally an effective amount of at least one additive selected from the group consisting of hindered amine light stabilizers, UV light absorbers, and thermal stabilizers. Resins of the present invention are particularly suitable for preparing transparent laminates useful as glazing elements that provide a greater measure of safety than non-laminated glazing elements.

An ultrasonic probe includes a light irradiating portion configured to radiate light for generating ultrasonic waves from a light absorber, an ultrasonic transducing portion configured to transduce the ultrasonic waves to an electric signal, and a light guide member configured to introduce light from a light source to the light irradiating portion. A light irradiating region of the light irradiating portion is included within an ultrasonic receiving region of the ultrasonic transducing portion.

A low temperature method and system configuration for depositing a doped silicon layer on a silicon substrate of a selected grade. The silicon substrate for functioning as a light absorber and the doped silicon layer for functioning as an emitter. The method comprises the acts of: positioning the silicon substrate in a chamber suitable for chemical vapour deposition of the doped silicon layer on the silicon substrate, an external surface of the silicon substrate suitable for promoting crystalline film growth; using a plurality of process parameters for adjusting growth of the doped silicon layer, the plurality of process parameters including a first process parameter of a process temperature for inhibiting diffusion of dopant atoms into the external surface of the silicon substrate, and a second process parameter of a hydrogen dilution level for providing excess hydrogen atoms to affect a layer crystallinity of the atomic structure of the doped silicon layer; exposing the external surface of the silicon substrate in the chamber to a vapour at appropriate ambient chemical vapour deposition conditions, the vapour including silicon atoms, dopant atoms and the excess hydrogen atoms, the atoms for use in growing the doped silicon layer; and originating growth of the doped silicon layer on the external surface to form an interface between the doped silicon layer and the silicon substrate, such that the doped silicon layer includes first atomic structural regions having a higher quality of the layer crystallinity next to the interface with adjacent second atomic structural regions having a lower quality of the layer crystallinity with increasing concentrations of crystal defects for increasing thickness of the doped silicon layer from the interface. The resultant silicon substrate and doped layer (or thin film) can be used in solar cell manufacturing.

An intravital-information imaging apparatus includes light sources for irradiating a living body with light, and acoustic-wave detectors that detect acoustic waves generated from a light absorber having absorbed part of energy of the light from the light sources, the light absorber existing in the living body. Furthermore, the intravital-information imaging apparatus includes signal processors that calculate information representing a distribution of optical characteristic values of the living body using sound pressures of the acoustic waves generated from the light absorber.

Benzotriazole UV / Visible light-absorbing monomers are disclosed. The UV / Vis absorbers are particularly suitable for use in intraocular lens materials.

This disclosure provides methods to integrate heat generating nanoparticles to microelectromechanical (MEMs) and photonic devices such as microbolometers and thermopiles for better photodetection and electrical energy generation. Nanoparticles include noble metal and semiconductor nanocrystals of different shapes, as light sensing and heat generating materials.

Benzotriazole UV / Visible light-absorbing monomers are disclosed. The UV / Vis absorbers are particularly suitable for use in intraocular lens materials.

A two-way trans-reflective display pixel (100) having two viewable sides (102, 104) is disclosed. The two-way trans-reflective display pixel has a first transparent layer (106), a second transparent layer (108), and light modulating medium (110) sandwiched between them. Both the first and second transparent layers (106, 108) have light reflectors (132, 136) and light absorbers (130, 134), which allow light entering from either viewable sides (102, 104) to partially reflected, partially absorbed, and partially transmitted, allowing an image to be viewable from both viewable sides (102, 104). A two-way trans-reflective display (402) comprising a plurality of two-way trans-reflective display pixels (100) and a transparent light source (412) is also disclosed. The transparent light source (412) provides color light, and enables an image from the two-way trans-reflective display (402) to be viewable in color from both first and second viewable sizes (418, 602).

Provided is a solar cell including: a first electrode; an electron transport layer positioned on the first electrode; a light absorber; a hole transport layer; and a second electrode, wherein the light absorber contains a solid-solution of at least two organic-metal halides with a perovskite structure, having different compositions from each other.

Provided are an organic light emitting display device including a transparent moisture absorption layer formed of at least one of a metal oxide and metal salt having an average particle diameter of 100 nm or less, a binder, and a selective light absorber absorbing light of a wavelength of a specific range, and a method of manufacturing the same. The transparent absorbing layer further contains a dispersant. The organic light emitting display device including the transparent moisture absorption layer has an excellent moisture absorption capability compared to a conventional organic light emitting display device including a getter, and is transparent. Therefore, the organic light emitting display device has desired lifetime characteristics and improved color purity and contrast characteristics.

The invention discloses a nylon composite powder material for selective laser sintering (SLS). The nylon composite powder material comprises the following components: nylon resin powder, solid glass beads, a coupling agent, a light absorber, a flow aid and an antioxidant. The nylon composite powder material has good mechanical properties and forming effect; and the obtained SLS formed piece has high dimensional stability, the tensile strength and bending strength of the SLS formed piece are improved, the bending modulus is improved by 60-70 percent particularly, the cost of the material is reduced by over 30 percent, a preparation process for the material is simple, environment-friendly and pollution-free, and the nylon composite powder material is a novel nylon composite powder material having high performance, low cost and no pollution and suitable for SLS.

The present invention relates to an alcohol-free transparent sunscreen composition containing at least one chemical ultra-violet (UV) light absorber, at least one solvent and at least one diphenyl silicone elastomer gellant. Preferably, the solvent is selected from the group consisting of dimethicone, dicaprylyl carbonate, lauryl lactate, neopentyl glycol diheptanoate, glycerin, and combinations thereof, and the diphenyl silicone elastomer gellant contains diphenylsiloxy phenyl trimethicone. Such a transparent sunscreen composition can be used to form a stable and aesthetically appeal clear gel for protecting skin against harmful effects of UV radiation.

In a method for forming a light absorber layer (4) of a thin film solar cell, the absorber layer is formed from a plurality of sub-layers each of which is formed by preparing a plurality of mixtures containing Cu, Se, In and Ga in a liquid medium, a composition ratio of In to Ga being progressively increased from one mixture to another, the mixtures optionally including a mixture containing no In or Ga; applying a layer of one of the mixtures onto a back electrode layer (3) formed on a substrate (2); drying the applied layer of the mixture; and rapidly baking the dried layer of the mixture. By forming the absorber layer with a plurality of thin absorber sub-layers each having a controlled band gap, a solar cell having a large surface area can be fabricated at low cost and the efficiency of the solar cell can be improved by forming a favorable band gap gradient structure. As these sub-layers can be applied simply by any known processes, the method of the present invention is highly suited to be used for mass producing solar cells.

A biochemical analyzer includes an optical assay unit for light measurement by use of an analysis slide and an LED light source. A fluid sample is positioned on an assay surface of the analysis slide. The light source is oriented to tilt with respect to the assay surface, for applying illuminating light thereto. The optical assay unit includes a photo diode, positioned vertically under the assay surface, for measuring scattered reflected light of diffuse reflection from the assay surface. A light absorber is positioned in a light path of the light emitted by the LED light source and reflected in regular reflection by the assay surface, for absorbing the light. Furthermore, the light absorber is black with a low gloss. The photo diode responds to turning on of the light source, to output a signal of the scattered reflected light.

An infrared detector capable of detecting an infrared spectrum having a wide bandwidth using a broadband light absorber. The infrared detector including a substrate, a light absorber disposed apart from the substrate at a distance, and a pair of thermal legs configured to support the light absorber such that the light absorber is spaced apart from the substrate by the distance. The light absorber includes at least one thermistor layer having a resistance value that varies according to temperature and at least two resonator layers disposed on at least one of upper and lower surfaces of the at least one thermistor layer.

A display system includes a display arranged to receive an image wise pattern of light to form an image, including, a pair of conductors, at least one conductor being transparent, a layer of cholesteric liquid crystal material disposed between the conductors, the liquid crystal material having multiple stable optical states at zero electrical field, and a light absorber for forming an image wise thermal pattern in the liquid crystal sufficient to change the optical state of the cholesteric liquid crystal in response to an image wise pattern of light; a display writer, including, a light source for producing a flash of light of sufficient intensity to generate sufficient heat in the light absorber to change the optical state of the cholesteric liquid crystal, a mask located between the light source and the display for defining the image wise pattern of light, a display drive connectable to the conductors for generating an electric field between the conductors for changing the optical state of the cholesteric liquid crystal, and a controller connected to the light source and the display drive for controlling the intensity of the electrical field and actuating the light source to create an image on the display.

The invention discloses a functional nonwoven sea water desalination material and a preparation method and application thereof. The sea water desalination material uses non-woven as a basis material, and a carbon material loaded on the surface as a light absorber. The functional nonwoven sea water desalination material internally includes short staple which has a core absorption effect on sea water and provides a water transport corridor, and the pore structure of the material is beneficial to passing of water vapor. The sea water desalination material has a good thermal insulation performance to avoid the loss of solar energy, and as the light absorber, the material has a high utilization rate of solar energy so that the water vapor producing efficiency is high; the material is durable and convenient to transport, and the preparation method has low costs and a simple process.

A water-dilutable UV light absorber composition and method for improving the lightfastness of dyed textiles is provided. The composition includes from about 5-75% by weight of an ultraviolet light absorbing agent selected from the group consisting of benzotriazole, benzophenone, and phenol substituted triazine; and from about 25-95% by weight of an organic solvent suitable for dissolving the ultraviolet light absorbing agent. The ultraviolet light absorbing agent is applied to the textiles in a concentration sufficient to result in an add-on in the range of between 0.4-4.0% by weight of the textiles when dry.

The invention discloses casting coated sand suitable for selective laser sintering forming and a manufacturing method thereof. The coated sand is made from roughing sands, an organic binder, an inorganic binder, a coupling agent and a curing agent, further, additives, such as a lubricant, a light absorber and the like are not required; and the roughing sand is spherical pearl sand with the angular coefficient less than or equal to 1.1, wherein the sand grains consist of adjacent four-sieve sands or five-sieve sands. The manufacturing method of the casting coated sand comprises the following steps of: sieving the roughing sands to obtained the required four-sieve sands or five-sieve sands; carrying out thermal coating on the roughing sands by using phenolic resin powder, the coupling agentand the curing agent according to a certain proportion so as to obtain phenolic resin coated sand; and evenly mixing monoammonium phosphate fine powder and the phenolic resin coated sand which are ina certain proportion to obtain the casting coated sand suitable for the selective laser sintering forming. The coated sand laser sintering forming part has high preform strength, good forming accuracy and little gas forming amount and can be applied to a casting sand mold (core) with an intricate structure in laser fast forming, therefore, the fast trial-production and the manufacturing capacity of intricate castings are enhanced.

The invention discloses a solar water purifier based on interface solar photo-thermal conversion, which comprises a solar interface evaporator and a distilled water collector, the solar interface evaporator comprises an open water storage tray and a light absorber with high photo-thermal conversion efficiency, the light absorber is of a double-layer structure and is formed by compounding an upper-layer photo-thermal conversion material and a lower-layer thermal insulation material, and a dust-free cloth is arranged between the upper-layer material and the lower-layer material. During use, it needs to be guaranteed that the dust-free cloth can continuously make contact with the liquid level in a water storage disc, so that it is guaranteed that enough water is conveyed to the surface of thelight absorber to guarantee continuous evaporation. Only solar energy is used as driving energy, other energy sources are not consumed, meanwhile, the problem of replacement of a filter element of aconventional water purifier is avoided, and the device has the advantages of being portable, low in price, high in water purification efficiency and the like and can be stably applied to seawater desalination, sewage treatment and outdoor drinking water purification for a long time.

Including a triazine UV light absorber having a silane group in a coating improves scratch and mar resistance after weathering.

The invention relates to a wear-resistant self-lubricating nylon composite material, and a preparation method and application thereof. The nylon composite material is composed of a nylon resin, a reinforcing fiber, a hydrophobic material, an anti-wear agent, a lubricant, an ultraviolet-resistant light absorber, an antioxidant and a compatilizer. The preparation method comprises the following steps: mixing the nylon resin, hydrophobic material, anti-wear agent, lubricant, ultraviolet-resistant light absorption agent, antioxidant and compatilizer, adding into a charging hopper, continuously metering and feeding into a double screw extruder, feeding the reinforcing fiber into the double screw extruder through a side feed metering screw, merging with the main materials, sending into a compounding region for blending, cooling, granulating and drying. The nylon composite material prepared by the method has the characteristics of high strength, low hydroscopic property, wear resistance, moisture resistance, weather resistance, excellent self-lubricating and the like, has the advantages of favorable dimensional stability and long service life, and can be widely used in the fields of lubricating bearings, shaft sleeves, mechanical gears, mine support rollers and the like.

The invention discloses a preparation method of nylon powder for 3D (three-dimensional) printing. The preparation method comprises the following steps: adding a surfactant, a light absorber, a bulking agent, a viscosity reducer, an antioxidant and heat conducting power and the like into nylon powder, and stirring and mixing at a high speed to obtain modified nylon filler; adding the modified nylon filler, solvent oil and an emulsifier into a reaction kettle, stirring and heating to 180-260 DEG C to dissolve the nylon powder to a liquid, and stirring and emulsifying at a high speed to obtain a nylon high-temperature emulsion; quickly cooling the nylon high-temperature emulsion into a nylon suspension; and separating, washing, drying and sieving to obtain spherical nylon powder with diameters of 30-100 mu m. The preparation process disclosed by the invention is simple and feasible, the preparation time is short in period, and the process is easy to control and good in repeatability. The synthesized product is uniform in size distribution, regular in shape, spherical or size approximately spherical and good in heat conductivity of powder and mobility, so that the nylon powder has a wide application prospect in 3D printing materials.

The present invention provides an antimicrobial paint including an effective amount of one or more UV light absorbers. The UV light absorber can be any UV light absorber able to prevent or reduce a change or destructive effect by UV light on a metal pyrithione, but is preferably a benzotriazole UV light absorber or a hindered amine light stabilizer (“HALS”).

The invention discloses coated sand for selective laser sintering and a preparation method thereof. The coated sand comprises crude sand, a compound binder, a curing agent, a lubricating agent and a light absorber, wherein the compound binder comprises phenolic resin and epoxy resin; the curing agent is formamine; the lubricating agent is zinc stearate, calcium stearate or lithium stearate; and the light absorber is carbon black. The preparation method comprises the following steps: firstly, carrying out freeze grinding on the epoxy resin; then selecting epoxy resin powder with suitable particle size distribution by a sieving method; and finally, evenly mixing a certain ratio of epoxy resin powder, the carbon black and phenolic resin coated sand prepared by the existing process. Due to the fact that the strength of the SLS formed part of the coated sand is higher, the coated sand can be used for SLS of casting sand moulds (cores) with large-size and complicated structures.

The invention belongs to the technical field of waterproof materials of buildings, and particularly discloses an uncovering-free type macromolecule self-adhesion waterproof roll and a preparing method of the uncovering-free type macromolecule self-adhesion waterproof roll. According to the technical scheme, the uncovering-free type macromolecule self-adhesion waterproof roll comprises a plastic basic material, wherein the two sides of the upper surface of the plastic basic material is lap joint zones, the middle of the upper surface of the plastic basic material is a structural concrete bonding zone, and a self-adhesion layer and an isolating layer are arranged on the upper surface of the plastic basic material in a hot-compressing mode. The self-adhesion layer of the uncovering-free type macromolecule self-adhesion waterproof roll is composed of SBS resin, SIS resin, a plasticizer, a thickening agent, a light absorber and filling. The isolating layer made of active inorganic particles and capable of generating a hydration reaction with newly stirred cement-based materials is arranged on the self-adhesion layer. When the uncovering-free type macromolecule self-adhesion waterproof roll is used, materials of the isolating layer on the surface of the self-adhesion waterproof roll do not need to be uncovered, concrete can be poured directly, and a firm connecting interface is formed. Therefore, the uncovering-free type macromolecule self-adhesion waterproof roll has the advantages of being convenient to construct, capable of reducing resource waste, stable and reliable in the performance of being bonded with concrete and the like.

A retinal imaging device and illumination module. The illumination module includes a light source to provide an incident beam along an illumination axis, a condenser lens at a spaced apart distance from the light source for condensing the incident beam and emanating a condensed incident beam, a transparent plate at a spaced apart distance from the condenser lens, wherein the transparent plate comprises a light absorber, at least one projections lens system to focus the condensed incident beam, a shield at a spaced apart distance from the projection lens system to yield a first partially blocked beam to form a comea illumination doughnut, and a perforated mirror comprising a hollow cylinder. A portion of the hollow cylinder protrudes out from a reflecting face of the mirror, forming an elliptical stopper to yield a second partially blocked beam to form a pupil illumination doughnut, enabling reflex-free imaging of the retina.