62results about How to "Improve surface reflectivity" patented technology

Embodiments of the invention provide lighting assemblies for installation in lighting fixtures. Lighting assemblies include at least one light source, at least one heat sink, and at least one reflector. Other embodiments of the lighting assembly may also include an outer surface of the reflector comprising a heat sink. In some embodiments, it may be desirable to direct light toward a wall. In those situations, a wall wash trim may be included. The lighting assemblies disclosed herein may be modular and thus replaced without having to uninstall the entire fixture. In some embodiments, a circuit board containing at least one light emitting diode in an existing lighting assembly may be replaced with another circuit board containing light emitting diodes of a different color temperature or a different color.

Disclosed herein is an illuminated signboard using a plane light source in which edges of two light guide plates are cut in an inclined form, an opaque plate having high surface reflectivity is inserted between the two light guide plates to optically block the two light guide plates from each other, and the light guide plates and the opaque plate are combined to form a second lighting part. U-shaped frames including LEDs are connected to construct a frame housing and the second lighting part is combined with the frame housing. Light emitted from the LEDs and transmitted in the light guide plates is dispersed by a dispersing mechanism formed on the backsides of the light guide plates using paint, print ink or engraving to transmit the light guide plates and graphics or natural color pictures formed on transparent plates attached to the outer sides of the light guide plates so as to illuminate the graphics or the natural color pictures.

The invention relates to a metal piece, the roughness concentration of the surface of the metal piece is 0.02 micron to 0.1 micron, and the reflectivity of the surface is 65 percent to 90 percent. A method for processing the surface of the metal piece is used for obtaining the metal piece by polishing a metal substrate, and the polishing comprises the following steps: polishing pretreatment is carried out to the metal substrate; the metal substrate after the polishing pretreatment is dipped in polishing liquid containing ammonium salt and an addition agent, the metal substrate is put on a positive pole, and a pulse electric field with high frequency and high voltage is applied for plasma body polishing; and the metal piece is obtained after the polished metal substrate is washed and parched. Compared with the traditional polishing method, the method for processing the surface of the metal piece has the advantages that the electrochemistry leveling of the surface of the metal substrate is greatly increased, and the roughness concentration is reduced.

Systems and methods are disclosed for performing laser annealing in a manner that reduces or minimizes wafer surface temperature variations during the laser annealing process. The systems and methods include annealing the wafer surface with first and second laser beams that represent preheat and anneal laser beams having respective first and second intensities. The preheat laser beam brings the wafer surface temperate close to the annealing temperature and the anneal laser beam brings the wafer surface temperature up to the annealing temperature. The anneal laser beam can have a different wavelength, or the same wavelength but different orientation relative to the wafer surface. Reflectivity maps of the wafer surface at the preheat and anneal wavelengths are measured and used to select first and second intensities that ensure good anneal temperature uniformity as a function of wafer position.

A motor vehicle component consisting of a metal profile element and a lighting element. The profile element has a channel extending in the longitudinal direction of the profile with an externally accessible opening extending in the longitudinal direction of the profile. The lighting element serves to produce a strip of light radiating in the longitudinal direction of the profile, and is arranged in the channel of the profile element so as to be concealed behind an outer surface of the profile element so that the radiated light does not arrive directly at the outside, but instead is reflected outward by a reflecting surface of the profile element.

A light-emitting diode comprising a light-emitting diode die, a lead frame, a reflector cup and a dome encapsulating at least the light-emitting diode die and the reflector cup, wherein the reflector cup is made of a plastic material.

The invention provides a magnesium alloy surface treating method and a magnesium alloy polished by the same. The method is characterized by comprising the following step of: performing plasma polishing on the magnesium alloy, wherein a plasma polishing method comprises the following steps of: connecting the magnesium alloy and an anode; soaking the magnesium alloy into an electrolytic bath which accommodates polishing liquid; taking an electrolytic bath body as a cathode; and performing plasma polishing under an acid condition, wherein the operation voltage of the electrolytic bath is a positive pulse voltage of between 260 and 400 V, an operation temperature is between 65 and 95 DEG C and an operation voltage frequency is between 10 k and 20 kHz. The surface roughness of the magnesium alloy polished by the surface treating method is between 1 and 5 mu m and the surface reflectivity of the magnesium alloy is between 50 and 85 percent. The magnesium alloy prepared by a surface polishing method provided by the invention has a smooth surface and high surface reflectivity.

A system, apparatus, and method is provided for curing ultraviolet (UV) curable coatings on articles using UV lamps while the article is immersed in an atmosphere of inert gas heavier than air. One example of a UV curable coating includes 35 weight % Laromer™ LR 8987, 20 weight % urethane acrylate hexandioldiacrylate, 38.5 weight % Laromer™ LR 8863, 3.5 weight % polyetheracrylate Iragucure™ 184, 0.5 weight % of a Photoinitiator Lucirin™ TPO, 2 weight % Tinuvin™ 400 and 1.5 weight % UV absorber Tinuvin™ 292. Examples of the inert gas used in the process disclosed include carbon dioxide, nitrogen, argon, hydrocarbon and halogen gases. An example of an apparatus provided by the invention includes a suspended track system; a housing, wherein the housing comprises an internal portion of the suspended track system and a curing chamber having highly reflective surfaces of favorable geometry. Further provided is a plurality of UV lamps, wherein the lamps are disposed on a slidably removable curing caddy system, wherein the slidable curing caddy enables lamp replacement and general interior maintenance of the apparatus. Further provided is an evaporator and alternatively, a vaporizer for providing a heavy gas supply. Further provided is a controller and software to coordinate the functions of the apparatus disclosed.

The invention discloses a reflective and heat-insulation coating for buildings and a preparation method thereof. The reflective and heat-insulation coating for buildings consists of two parts including prime coating and surface coating, wherein the prime coating comprises the following components in percentage by weight: 30-45% of film formation emulsion, 30-40% of hollow microspheres, 5-10% of filler, 0.5-2% of a wetting dispersant, 0.2-0.5% of a defoaming agent, 0.5-2% of a coalescing agent and 2-10% of deionized water; the surface coating comprises the following components in percentage by weight: 30-40% of film formation emulsion, 15-25% of rutile type titanium dioxide, 15-30% of filler, 0.5-2% of a wetting dispersant, 0.2-0.5% of a defoaming agent, 0.5-2% of a coalescing agent and 10-20% of deionized water. According to the reflective and heat-insulation coating for buildings and the preparation method thereof, the prime coating has excellent heat insulation effect, the surface coating has higher sunlight reflectivity, and if the prime coating and the surface coating are combined to be used, the temperature of a coated surface can be remarkably reduced; the reflective and heat-insulation coating has excellent weather, water and stain resistances.

The invention discloses an attenuation sampling device used for large-angle high-energy laser incidence. The device comprises a front panel, an attenuation unit and a rear panel, wherein a straight laser incidence sampling hole is formed in the front panel, a laser exiting hole is formed in the rear panel, the attenuation unit comprises a front transmission window, a rear transmission window and a cylindrical cavity, the cylindrical cavity is arranged coaxial with the straight sampling hole and the laser exiting hole, and the cylindrical cavity is filled with granular optical volume scattering materials. After being coupled into the attenuation unit through the sampling hole, absorbed through inner walls and the materials, and subjected to volume scattering, lasers are emitted out through the laser exiting hole, laser beam energy can be redistributed in a space within a wide range, and the homogenization effect is achieved; meanwhile, large-angle attenuation sampling can be achieved in the laser oblique incidence, the requirement for substantial attenuation of laser power density can be met, and the device can be used for high-spatial-resolution light intensity detection.

The invention relates to an array attenuator for a high-energy laser and a manufacturing method thereof. The array attenuator comprises a front panel, a rear panel and an array of a plurality of integrating sphere cavities, wherein the front panel and the rear panel are arranged along an incident direction of the laser; each of the integrating sphere cavities is formed by two hemispherical cavities in spliced connection; a laser incident hole and a laser emergent hole are formed on an edge of each of the integrating sphere cavities; the front panel and the rear panel are made of metallic materials; and a diffuse transmission optical window is mounted at the laser incident hole. Compared with the graphite in same size, the array attenuator provided by the invention is low in absorption rate for laser power, thereby being suitable for the attenuation of a medium multiple laser power density. Meanwhile, the diffuse transmission optical window is mounted in front of the laser incident hole, so that the laser passing by the optical window is multi-angularly coupled in the laser incident hole, thereby keeping a basic invariable attenuation coefficient of the attenuator when the laser obliquely incomes within a certain angle scope.

The invention provides a method for preparing flaky metal powder by means of a dry ball mill. The method comprises the steps that metal raw material powder and ball milling additives are evenly mixed, a mixture and a steel ball are put in a closed novel roller ball mill for ball milling in proportion, the ball milling temperature is controlled through a cooling water circulation system in the ball milling process, and the ball milling atmosphere in a roller is adjusted through a ball milling atmosphere control system; a closed discharging system is adopted for discharging, inert gas of certain pressure is input, an exhaust fan and the ball mill are started, and ground metal powder in the ball mill is blown and sucked out in a blowing and sucking manner; and the metal powder is put in dispersion equipment again to be dispersed, and is graded by airflow grading equipment to obtain finished products. The invention relates to a device for achieving the method. According to the method, the whole process is high in automation degree, no steel ball transfer exists, and the labor intensity and workloads of workers are greatly reduced. In addition, the sealing performance and the cooling effect are good, no dust pollution exists, the phenomena of powder oxidation and spontaneous combustion in the powder discharging process are avoided, the yield is large, and production efficiency is greatly improved.

The invention discloses an emulsion filtration system for cold continuous rolling of stainless steel. The emulsion filtration system comprises a contaminated emulsion tank, a filtering device, a purified emulsion tank, a standing tank, a rolling oil filter, a purified oil tank and a sewage discharge tank, wherein the bottom part of the contaminated emulsion tank and the bottom part of the purifiedemulsion tank respectively communicate with a compressed air pipeline in a workshop; the purified emulsion tank and the standing tank are in communication; the standing tank and the rolling oil filter are in communication; the rolling oil filter and the purified oil tank are in communication; the purified oil tank and the purified emulsion tank are in communication; the bottom part of the standing tank communicates with the sewage discharge tank; and the interior of the standing tank is provided with a first overflow plate and a second overflow plate. The invention also provides an emulsion filtration method for cold continuous rolling of stainless steel. The invention has the following beneficial effects: the emulsion filtration system and method provided by the invention realize sedimentation of large-sized particles and oil-water separation of an emulsion through arrangement of the standing tank, can filter rolling oil rich in small-sized particular impurities by utilizing the rolling oil filter, can remove 90% or more particular impurities, and have high filtering efficiency and good filtering effect.

The invention relates to a method for improving the function of photocatalysis of a nanofilm by the principle of interference of light. The method is to coat a nanometer material with the function of photocatalysis on a substrate material according to a certain optical thickness to prepare the film with a nanometer structure, wherein the nanofilm is made of a single material layer or two materials alternately; and when the nanofilm is coated, the substrate material to be coated makes relative motion with a colloid solution, the coating speed is at about 0.02 to 2.0cm/s, each film is baked for 3 to 20 minutes at a temperature of between 400 and 550 DEG C, and the other layer is coated when the film is cooled to room temperature. The method uses the relative motion of the surface of the colloid solution and the substrate material to achieve film thickness control, and the prepared photocatalyst nanofilm is more useful to prepare a film which sterilizes and degrades harmful gases and has certain requirement on transparency.

The invention discloses a printed circuit board heat exchanger channel flow field visualization device comprising a water tank, a tracing particle injector, a front water collecting pipe, a PCHE visual channel module, a rear water collecting pipe, a light source, a CCD camera, a computer and a differential pressure measurement system which is used for detecting pressure drop resistance information of the water before and after the channel in the PCHE visual channel module. Visualization of the printed circuit board heat exchanger fluid channel flow field information can be realized by the device.

The invention discloses a production method for cold-rolled IF steel with high surface cleanliness. The production method comprises the following steps that 1, a hot-rolled IF steel coil is uncoiled and welded and then is stretched, straightened and subjected to scale breaking; 2, continuous shallow slot turbulence hydrochloric acid pickling is carried out on the strip steel formed by pulling the steel coil open; 3, a pickling corrosion inhibitor is added 12 hours in advance; 4, the strip steel subjected to acid pickling is rinsed and dried; 5, five machine frames carry out continuous rolling, the F1-F4 machine frames adopt small-roughness working rollers for large pressing, and the F5 machine frame adopts a large-roughness working roller for light flattening; 6, the cold and hard steel coil obtained after continuous rolling enters a cleaning unit for powerful cleaning; 7, the strip steel subjected to electrolytic cleaning is rinsed and dried; 8, the surface cleanliness of the strip steel is measured every five coils at an inlet of an outlet loop of the cleaning unit; 9, nitrogen-hydrogen mixed protective gas with the hydrogen concentration of 5-7% is adopted for continuous annealing, flattening, trimming and oiling are carried out, and then coiling is carried out so as to obtain a finished steel coil; The production method has the advantages that the whole production process is mature and stable, and the comprehensive manufacturing cost is low; and the surface reflectivity of the cold-rolled IF strip steel at the outlet of the cleaning section reaches 92% or above.

A flexible circuit board 3a for mounting a light emitting element has base films 31a and 31b, a wiring pattern 32 formed on a surface of the base films 31a and 31b, and the cover films 33a and 33b that covers the base films 31a and 31b and the wiring pattern 32. At least one of the base film and the cover films 33a and 33b have a substrate 331 and 331a comprising a metal. The cover film 33a and 33b have such surface properties as to produce specular reflection or diffuse reflection of light or has substantially white reflecting films 36 and 333 on a surface of the cover film.

The invention provides an alkali etching and polishing method for a monocrystalline silicon wafer and belongs to the technical field of silicon wafer etching. According to the method, an alkaline polishing solution containing grinding particles, glycerol, an organic amine compound, sodium tartrate, a fluorine-containing nonionic surfactant and sodium tartrate is utilized to perform etching and polishing on monocrystalline silicon through the steps of surface pretreatment, surface etching and polishing, alkali cleaning, acid cleaning, water washing and the like, etching and polishing at the low temperature are achieved, energy consumption is reduced, the etching and polishing effect is good, the silicon wafer thinning amount is low, and the silicon wafer surface reflectivity and the battery conversion efficiency are effectively improved.