6results about How to "Improve Optical Uniformity" patented technology

The present application relates to the technical field of optical glass manufacturing, and discloses an optical glass mold pressing forming method based on multi-zone non-isothermal gradient heating. The method divides the heating system of the mold pressing forming area into multiple independent temperature control zones, actively constructs a preset non-isothermal gradient temperature field that is geometrically suitable for the component before pressure forming, and guides the viscosity distribution of the glass material. In the pressure forming process, the temperature data of each temperature zone are collected in real time and compared with the dynamic target gradient, the heating power is adjusted based on the deviation closed loop, the actual temperature field intelligently follows the preset gradient, and the material flow filling is optimized. After forming, a gradient annealing cooling program with partition differentiation is executed, different cooling rates are set according to the thickness or stress risk of the region, and the internal stress is sequentially released. The present application actively and accurately regulates and controls the temperature field in the whole forming process, can effectively improve the surface shape precision of the optical component, reduce the residual stress and improve the surface quality.

The application relates to the technical field of quartz sand purification, and discloses a purification treatment process for high-purity quartz sand production, which comprises the following steps: step S1, ore pretreatment: the raw ore is subjected to crushing, ore grinding, grading, magnetic separation, scrubbing, concentration and dewatering and other treatment modes to obtain fine quartz sand concentrate; step S2, grading washing and precision microfiltration: the quartz concentrate slurry after flotation is subjected to multistage countercurrent washing and high-molecular composite material microfiltration in sequence to obtain once-purified quartz material; and step S3, high-temperature chloridizing roasting: the once-purified quartz material is dewatered. According to the application, more than 80% of the easily removed impurities are removed in advance through multistage crushing, grading, magnetic separation and scrubbing, qualified fine concentrate is obtained, and higher guarantee is provided for the overall sandstone quality; and through the introduction of the core steps of high-temperature chloridizing roasting and high-temperature vacuum hydroxyl removal, key impurities such as aluminum (Al) and boron (B) existing in the form of isomorphism in the quartz lattice can be effectively removed.

This invention relates to the field of organic functional crystal growth technology, specifically a method for growing organic crystals based on the control of the included angle of the inner wall of a crucible. The method employs a quartz crucible with an axisymmetric conical inner cavity, and controls the included angle β of the inner wall of the crucible to be 10°–30°, preferably 15°–20°. After loading the organic crystal raw material into the crucible, a vacuum of 1×10⁻⁶ is applied. ‑2 After being sealed by welding, and after passing the pre-growth inspection and sealing, the melt is placed in a Bridgman crystal growth furnace for heating and melting and held at that temperature for 24 hours. The axial temperature gradient is controlled, and the melt is directionally solidified and grown from bottom to top at a rate of 1-1.5 mm / h. The organic single crystal is then slowly cooled to obtain the organic single crystal. This invention optimizes the melt flow field and solid-liquid interface by adjusting the crucible angle, reduces the radial temperature gradient, reduces defects such as crystal cracks and dislocations, and improves crystal integrity and optical uniformity. The process is simple, has good repeatability, and is suitable for large-size, high-quality growth of organic scintillation crystals and organic optoelectronic crystals.

The utility model relates to a photovoltaic - display integration quantum dot backlight module of display technical field, including photovoltaic element layer, optical coupling layer, quantum dot film layer and conductive and optical modulation layer who laminated and bonded in proper order, photovoltaic element layer is silicon -based solar cell panel, optical coupling layer includes high light transmittance polymer base, and the upper surface of high light transmittance polymer base is distributed micron -sized prism array or diffusing reflection particle, and the lower surface of high light transmittance polymer base is plated with anti -reflective film, quantum dot film layer includes main part and the perovskite quantum dot of embedding main part, and conductive and optical modulation layer includes conductive layer and optical modulation layer. The utility model reduces the dependency on power supply, realizes two -way light energy utilization, reduces power consumption, and the display picture color is more bright and colorful, real, improves optical uniformity while isolating external interference, ensures long -term stable light emission under the complex environment outdoors, relieves thermal stress, prevents material corrosion and cracking, and the module stability is high.

This invention relates to the field of polymer materials technology and discloses a method for manufacturing high far-infrared emission therapeutic glasses. The method includes: performing double-layer surface modification on far-infrared negative ion functional powder to obtain modified functional powder compatible with a polymer matrix; pre-dispersing and melt-blending the modified functional powder with a polymer matrix material in steps to obtain a blend; forming a functional powder enrichment region on the surface of the glasses by injection molding and applying a segmented electric field; polarizing the region based on the thickness of the enrichment region using a formula to determine the polarization electric field strength; and simultaneously performing radiation crosslinking treatment to anchor the crosslinked network to an oriented structure. This invention solves the technical problems of uneven functional powder dispersion and poor electret stability, achieving a synergistic effect of surface functional enrichment and long-lasting electret effect. The prepared glasses have durable and stable far-infrared emission and negative ion therapeutic functions.

This invention relates to the field of architectural ceramics technology, disclosing a titanium sphene crystal frit, its preparation method, and its application. The raw materials include kaolin, titanium dioxide, quartz, potassium feldspar, calcite, and wollastonite. By pre-firing the titanium sphene crystal frit using this formula, the titanium sphene crystals are pre-dissolved in the glass phase. During the subsequent glaze firing process at 1200℃, the titanium sphene crystals melt again and precipitate a second time, resulting in an opaque glaze layer. This secondary crystallization enhances the chemical stability of the titanium sphene crystal frit during subsequent glaze firing, leading to a more stable increase in the solar reflectance of the fired glaze. This solves the problem of unstable reflectivity in glazes when directly using titanium sphene powder or combining it with titanium dioxide and titanium frit to directly form titanium sphene crystals during glaze firing.