7results about How to "Reduced scattering loss" patented technology

The application discloses a kind of multispectral nanocluster doped multiple coating light concentrator and its method, including preparation substrate layer, preparation light emitting layer and preparation anti-reflection function layer, multispectral nanocluster doped light emitting layer is coated on substrate layer, anti-reflection function layer is coated on light emitting layer, the multispectral nanocluster is using Eu 3+ 、Tb 3+ 、Ce 3+ Ion or any combination thereof induced nanocluster of agglomerated polymer formation, the light emitting layer is obtained using multispectral nanocluster doped resin, for the absorption of incident short-wave light and conversion into characteristic emission light;The anti-reflection function layer is coupled to the outermost layer of light emitting coating, for limiting the light quantum conduction in coating, using different refractive index coating to limit the light quantum conduction in coating, to lock the fluorescent light quantum escape emitted by inner layer light emitting material, while, also can play the role of reducing interface reflection loss and improving the injection efficiency of incident light to light emitting layer.

The application provides a temperature control method and system for an automatic production line of baked paint doors. The method includes generating a three-dimensional thermal field model containing position coordinates, temperature difference values and area ratios by dynamically scanning the temperature distribution data of the door body surface during movement; then constructing a three-layer air duct system with independent adjustment of the top, middle and bottom parts, dynamically adjusting the rotation angle and air flow intensity of the corresponding level deflector to form an air flow coverage mode matching the door body curved surface; when the area ratio of the abnormal area exceeds the standard, adjusting the air door opening, synchronously calculating the compensation air volume increment coefficient to generate a level compensation instruction; finally, adjusting the heat dissipation intensity through the increment coefficient, forming a directional heat dissipation loop in cooperation with the deflector angle correction and static pressure tank vortex suppression device. The technical scheme provided by the application realizes dynamic perception of temperature abnormalities, accurate compensation of multi-level air flow and closed-loop control of over-temperature protection during the curing process of special-shaped door plates, and improves the curing uniformity and quality stability of the paint surface.

This application relates to the field of infrared transparent ceramic materials technology. Specifically, an embodiment discloses an infrared transparent ceramic material and its preparation method. The preparation method includes: dissolving yttrium nitrate hexahydrate and magnesium nitrate hexahydrate in deionized water according to a stoichiometric ratio; adding citric acid and ethylene glycol as chelating agents and binders; stirring to form a transparent sol; subsequently evaporating and drying to obtain a gel; placing the gel in a muffle furnace for a two-step high-temperature foaming treatment to obtain composite nanoparticles; ball milling the nanoparticles and pre-firing to obtain biphasic nanoparticles; loading the pre-firing nanoparticles into a graphite mold and sintering under axial pressure using SPS technology to obtain ceramic sheets; after furnace cooling, annealing the ceramic sheets in air; and polishing to obtain the infrared transparent ceramic material. The method of this application reduces scattering losses caused by pores and grain boundaries, overcoming the technical challenge of simultaneously achieving broad spectral coverage and high transmittance.

This invention discloses an asymmetric MZ electro-optic modulator, including an input coupler, an output coupler, and a first interference arm and a second interference arm connected in parallel between the output terminal of the input coupler and the input terminal of the output coupler. The first interference arm includes two first arc segments and a second arc segment connecting the two first arc segments. The second interference arm includes two third arc segments and a fourth arc segment connecting the two third arc segments. The opening direction of the second arc segment is opposite to the opening direction of the fourth arc segment. The two ends of the second interference arm are respectively connected to the output terminal of the input coupler and the input terminal of the output coupler through compensation segments. There is a preset target optical path difference between the optical path of the first interference arm and the total optical path of the second interference arm and the compensation segments at both ends. This invention features a compact layout, precisely adjustable optical path difference, and low transmission loss.

The utility model discloses an intelligent lost article searching label, solves the technical problem of weak light effect and poor sound indication effect of the prior art. The label comprises a shell, a light emitting assembly and a sound emitting assembly are arranged in the shell, the light emitting assembly comprises a light source, a first light expansion module located above the light source and a second light expansion module located at the side of the light source, and the sound emitting assembly comprises a sound source and a sound amplification module located at the outer side of the sound source. The intelligent lost article searching label of the utility model improves the eye -catching degree of the light source through the cooperation of the double light expansion modules, and improves the sound propagation effect through the sound amplification module, so that the quick searching of the lost article searching label is realized. It can be widely applied in express logistics technical field.

This invention provides a solar beam-splitting film and a photovoltaic module, specifically relating to the field of solar cell technology. The solar beam-splitting film comprises, from top to bottom, an upper substrate layer, a prism structure layer, and a lower substrate layer stacked together. The prism structure layer includes periodically arranged prism units, each with a triangular cross-section, and adjacent prism units forming a cavity structure. The refractive index of the prism units is 1.45–1.8. The solar beam-splitting film provided by this invention ensures that light meets the total internal reflection condition at the prism interface, thereby efficiently reflecting light that would otherwise illuminate inefficient areas such as gaps or edges of the solar panels to the surface of the photovoltaic cells. Furthermore, the cavity structure further optimizes the light path control capability through the difference in refractive index between the air medium and the prism material. This solution completely avoids conductivity limitations, allowing safe application in high-voltage conductive areas, while also preventing light energy waste caused by photovoltaic wiring obstruction, thus improving the overall light energy recovery efficiency of the photovoltaic module.

The application belongs to the field of optical communication, optical interconnection and optical sensing, and particularly relates to a micro-ring resonator with gradually changed cross-section width of micro-ring resonant cavity, which comprises a micro-ring resonant cavity and a coupling waveguide; the cross-section width of the micro-ring resonant cavity satisfies: uniformly widening along the counterclockwise direction of the micro-ring from the center of the coupling area, reaching the maximum at the symmetrical position of the center of the coupling area relative to the center of the micro-ring, and uniformly narrowing along the counterclockwise direction of the micro-ring from the maximum, so as to limit the fundamental mode light field in the waveguide as much as possible, reduce the interaction between the light field and the side wall, and reduce the scattering loss caused by the roughness of the side wall, wherein the gradual change rates of the uniform widening and the uniform narrowing are the same and satisfy: the half angle of the width gradually changed waveguide is not greater than the mode diffusion half angle, so as to avoid the excitation of high-order modes of the input light in the micro-ring and realize the adiabatic transmission of the fundamental mode. Therefore, the scheme can reduce the transmission loss of the micro-ring resonant cavity and effectively improve the Q value of the micro-ring resonator.