188results about How to "Reduce reflexes" patented technology

A design process first determines a desired aperture distribution, then converts the electric power conservation law, Snell's law on the rear face side of a dielectric lens, and the formula representing light-path-length constraint, into simultaneous equations, and computes the shapes of the surface and rear face of the dielectric lens depending on the azimuthal angle θ of a primary ray from the focal point of the dielectric lens to the rear face of the dielectric lens, and then reduces the light path length in the formula showing light-path-length constraint by an integral multiple of the wavelength when the coordinates on the surface of the dielectric lens reach a predetermined restriction thickness position. A dielectric lens is designed by sequentially changing the lazimuthal angle θ from its initial value, and also repeating the second and third steps. Thus, downsizing and quantification is realized by zoning while keeping antenna properties at the time of constituting a dielectric lens antenna in a good condition.

The invention discloses an EMC performance testing system under a motor on-load condition. The EMC performance testing system includes a darkroom, a drum, a drum motor, a power supply, a linear impedance stabilization network, a motor controller, a test bench and a wheel; the wheel contacts with the drum surface of the drum and drives the drum surface to rotate under the effect of the test bench, so that the drum motor can become as a load motor of a tested motor, and therefore, on-load testing of the tested motor can be realized; and the vertical load of the wheel can be controlled through adjusting a test bench fixing device, so that it can be ensured that the wheel reliably contacts with the drum surface of the drum. With the EMC performance testing system of the invention adopted, the EMC performance of a wheel hub motor, a single motor and a motor system including a motor, a motor controller and a power cable can be tested, and test results are accurate and reliable; in a constructed general electromagnetic compatibility test environment where drums exist, a special test environment for motor electromagnetic compatibility performance does not need to be constructed, and therefore, construction cost can be reduced; and for tested motors with different power levels in the power range of the drum motor, load motors do not need to be replaced, and therefore, load motor cost can be reduced.

An embodiment of the invention provides a display device and relates to the technical field of displaying in order to improve outdoor readability while indoor readability of the display device is unaffected. The display device comprises a display panel and an electrochromic panel disposed on the display panel. The electrochromic panel comprises an electrochromic unit which covers a whole display area of the display panel. The electrochromic unit is transparent and photoconductive when luminance of the surrounding is smaller than or equal to a preset value, and is stained and light-absorptive when the luminance of the surrounding is larger than the preset value.

It is an object to provide an optical transparent member capable of maintaining a high-performance antireflection effect for a base over a long period of time, and an optical system using the same, specifically an optical transparent member including on a base a layer containing SiO2 as a main component, a layer containing Al2O3 as a main component, and a plate crystal layer formed from plate crystals containing Al2O3 as a main component, wherein the surface of the plate crystal layer has a shape of irregularities, and an optical system using the same.

The invention discloses ferrite stainless steel for buildings. The ferrite stainless steel comprises the following chemical elements in percentage by mass: less than or equal to 0.015 percent of C, less than or equal to 0.020 percent of N, less than or equal to 0.5 percent of Si, less than or equal to 0.5 percent of Mn, less than or equal to 0.035 percent of P, less than or equal to 0.010 percentof S, more than 21.5 percent and less than 23.5 percent of Cr, more than 1.0 percent and less than 3.0 percent of Mo, more than or equal to 0.35 percent and less than or equal to 0.6 percent of Nb, less than or equal to 0.2 percent of Ti and the balance of Fe and other inevitable impurities, wherein (Nb+Ti) is more than or equal to 16(C+N) and less than or equal to 0.6 percent. Correspondingly, the invention further provides a method for preparing the stainless steel for buildings. Compared with the conventional stainless steel for buildings, the ferrite stainless steel has the advantages of excellent corrosion-resistant effect, low surface gloss, good scattered reflection effect, difficulty in deformation of steel plates, low cost and very good application effect.

The invention provides an OLED display panel and a preparation method thereof. The OLED display panel comprises a display device board, a packaging layer arranged on the display device board and a color film substrate arranged on the packaging layer; the display device board comprises a display area, the color film substrate comprises a light-transmitting zone and a light-shading zone, and the light-transmitting zone corresponds to the display area; and a scattering structure for scattering ambient light is arranged at the light-transmitting zone on the color film substrate and comprises a plurality of protruding particles. By arranging the scattering structure at the light-transmitting zone of the color film substrate, the certain transmittance increasing effect can be achieved on transmission light, the scattering structure is of a microstructure and has a optical grating like function, thus the transmittance of the color film substrate is increased, the reflecting function of the surface to light emitted by an OLED and the ambient light is reduced, and the contrast ratio of the OLED display panel is increased accordingly.

The invention discloses anti-cracking plastering gypsum mortar. The anti-cracking plastering gypsum mortar is prepared from the following raw materials: high-temperature calcined gypsum, ash calcium powder, composite portland cement, expanded perlite, fly ash, hydroxypropyl methyl cellulose ether, a retarder, a water reducing agent, starch ether, redispersible latex powder, polypropylene fibers and a waterproof agent. The invention provides the environment-friendly type lightweight bottom-layer plastering gypsum mortar which has good anti-cracking performance, has good heat insulation performance and can automatically adjusting temperature and humidity. By adopting the anti-cracking plastering gypsum mortar, the density of the mortar and the self weight of buildings can be effectively reduced; the anti-cracking plastering gypsum mortar has good sound insulation and noise reduction effects and has the advantages of uniformity in material preparation, convenience for construction, capability of being firmly stuck with a base layer, no hollowing, no falling, no cracks, fireproof and heat-resisting performance, heat insulation and sound insulation, greenness and environment protection,low cost and the like.

The invention relates to a layered silicon nitride SiNxOy film forming method applied to transparent glass, which is characterized in that a transparent material is used as a substrate material and two SiO2 film layers and a SiNxOy film layer are deposited on the surface of the substrate material by adopting a thin film deposition method; and by the matching design of a SiNxOy layer and SiO2 layer optical film system and the film formation of layered silicon nitride SiNxOy, the transmittance of a transparent glass finished product is improved and the reflectivity of the transparent glass finished product is reduced. Compared with the prior art, the film forming method provided by the invention achieves the effects of improving the transmittance and reducing the reflection on the transparent material, ensures the matchingo design of the film system containing the SiNxOy layer and the SiO2 layers, which is implemented by adopting a more cheap and more convenient target material containing an element Si, to achieve the effect of reducing the reflection. and is mainly used for the photoelectric industries of a touch screen, a thin film battery and a thin film switch.

The invention relates to a novel high power water load. The novel high power water load comprises a waveguide radiation horn mouth, a base, a spiral water chamber, a terminal short circuit block, and a protection housing disposed on the outer side of the spiral water chamber. Spiral type flowing water used as a microwave absorber is disposed in the spiral water chamber. The front end of the spiral water chamber is in the shape of a cone, and the rear end of the spiral water chamber is in the shape of a cylinder. One end of the waveguide radiation horn mouth is fixedly connected with an output radiation waveguide, and the other end of the waveguide radiation horn mouth is connected with the base. The other end of the base is connected with the rear end of the spiral water chamber and the bottom part of the protection housing, and the side of the base connected with the spiral water chamber is provided with a groove embedded in the rear end bottom part of the spiral water chamber. The side of the rear end of the spiral water chamber connected with the base is a water inlet, and the side of the front end of the spiral water chamber is a water outlet. The front end of the terminal short circuit block is in the shape of a cone, and is embedded in the front end of the spiral water chamber, and the rear end of the terminal short circuit block is connected with the top part of the protection housing. The water load is capable of satisfying use requirements of a high power millimeter wave electric vacuum device, and at the same time, the broadband low reflection of the water load is realized.

The invention provides highly contamination resistant heat-insulating building coating, which comprises, by weight, from 30 to 40% of acrylate elastic emulsion, from 8 to 15% of modified organic silicon micro-emulsion, from 20 to 25% of rutile titanium dioxide, from 5 to 15% of infrared emitting powder and from 15 to 25% of filler. The highly contamination resistant heat-insulating building coating has a fine reflecting effect on solar radiation heat and is capable of emitting heat accumulating on the surface to the external space in a long wave form, so that surface temperature of a coated article is reduced, life and working environments can be improved, energy is saved and consumption is reduced. Furthermore, the coating has high contamination resistance, the reflecting effect on solar radiation cannot be reduced due to surface contamination, and accordingly the long-term stable heat-insulating effect can be maintained.

The invention discloses a flyer structure for laser driving and a preparation method thereof. The flyer structure comprises a transparent substrate which is provided with a nano-aluminum array ablation layer. The nano-aluminum array ablation layer is filled with an alumina insulation layer. The alumina insulation layer is provided with an aluminum flyer layer. According to the flyer structure for laser driving and the preparation method thereof, an ablation layer is prepared to be of a composite nano-structure of Al / Al2O3 so as to produce a surface plasmon resonance absorption effect with laser, accordingly, the reflex action of metallic aluminum on the laser is reduced, and laser absorption is improved; the problem that reflex of the metallic aluminum ablation layer on the laser is high in the laser-driven flyer process is solved, and the laser-driven flyer technique is promoted to be improved.

The invention relates to a display panel and a display device. The display panel comprises a substrate, a pixel unit arranged on the substrate, a cover plate located on the side, away from the substrate, of the pixel unit, and an antireflection film layer located on the side, away from the pixel unit, of the cover plate. Each pixel unit comprises a first pixel and a second pixel which are different in color, the antireflection film layer comprises a first antireflection film and a second antireflection film, and the first antireflection film and the second antireflection film are arranged corresponding to the first pixel and the second pixel respectively; the ratio of the vertical projection area of the first antireflection film on the substrate to the vertical projection area of the first pixel on the substrate is A, the ratio of the vertical projection area of the second antireflection film on the substrate to the vertical projection area of the second pixel on the substrate is B, and the A and the B are not equal. According to the display panel provided by the invention, the reflectivity of the display panel can be reduced, and the display effect of the display panel is improved.