224results about How to "Improve Optical Uniformity" patented technology

An optical-optoelectronic coupling structure comprising a flip-chip optoelectronic / ultrathin silicon-on-sapphire device mounted on a V-groove, optical-fiber-bearing carrier substrate, including light-reflective structures for launching light into the optical fiber core or transmitting light emitted by the optical fiber core to the optoelectronic device. The optical fiber may be immobilized in the V-groove using a curable resin adhesive characterized by a refractive index substantially similar to the refractive index of the optical fiber.

Touch sensor panel configurations and methods for improving touch sensitivity of some or all of the electrodes or portions of the touch sensor panel are disclosed. The touch sensor panel configurations can allow increased speed at which the panel can operate. In some examples, the performance of a given touch electrode can differ from the performance of another touch electrode due to differences in capacitance and / or resistance. The performance of the touch sensor panel can be limited by the touch electrode with the lowest performance relative to the other touch electrodes. The configurations and methods can increase the performance of the touch sensor panel by minimizing the capacitive coupling and / or resistance of touch electrodes. Examples of the disclosure can provide configurations of touch sensor panels and methods for improving optical uniformity of the panel.

A burner for use in the manufacture of synthetic quartz glass is provided, which comprises a main burner (7) comprising a multi-tube assembly (1) including a center tube (2) for feeding a silica-forming compound, a first enclosure tube (3) surrounding the center tube for feeding a combustion-supporting gas, and a second enclosure tube (4) surrounding the first enclosure tube for feeding a combustible gas; a tubular shell (5) surrounding the multi-tube assembly for feeding a combustible gas; and a plurality of nozzles (6) disposed within the tubular shell for feeding a combustion-supporting gas. A double-tube assembly (8) is disposed so as to surround the forward opening of the main burner (7) for feeding a combustion-supporting gas. Synthetic quartz glass ingots having high optical homogeneity are produced.

A light guide plate (LGP) having a sectional light guiding structure is provided. The LGP is integrally configured with first grooves extending from a first side of the LGP to a second side of the LGP, and second grooves extending from a third side of the LGP to a fourth side of the LGP. The first grooves intersect with the second grooves, thus dividing the first surface of the LGP into a plurality of light guiding sections. Light sources are disposed in the first grooves and / or the second grooves. A sequence of lighting the light sources is controlled for respectively controlling the light sources to project light into the light guiding sections, so that the light guiding sections are controlled to guide the light according to a predetermined sequence.

An image forming apparatus including a photoconductor, and a developing unit having a developing sleeve for carrying a developer and a developer regulating plate for regulating the amount of the developer carried on the sleeve, wherein the developer is composed of a carrier and a toner, wherein that portion of the toner which has a particle diameter of 2.0-4.0 μm accounts for 30-70% of a total number thereof, and wherein the developer regulating plate is grounded so that when the developing sleeve is applied with a bias voltage, an electric field is formed between the developer regulating plate and the developing sleeve, whereby toner deposits on the developing sleeve are transferred to the developer regulating plate.

To provide a photoalignable material that can yield a photoalignable film having a high optical uniformity and no alignment defect, and is excellent in sensitivity to allow photoalignment even with exposure in a short period of time, and a liquid crystal alignment film having a high alignment stability of a liquid crystal compound from the photoalignable material. A photoalignable polymer composition containing a specific photoalignable polymer and a specific polymer that is reactive with the photoalignable polymer is manufactured, and the photoalignable film is manufactured by applying the polymer composition onto a base material or the like, drying the applied composition thereon, and irradiating the dried composition with light. Furthermore, the liquid crystal alignment film is manufactured by allowing alignment of molecules of the liquid crystal compound in the photoalignment film.

The present invention provides a fluorophosphate glass containing 30 to 50 cationic % of a phosphorus ingredient in terms of P5+, the glass having, in a nuclear magnetic resonance spectrum, a resonance spectrum which is generated near a reference frequency of 31P and has a shape of Gaussian function. The glass of the invention is reduced in volatility and erosiveness.

A liquid crystal display comprising an array substrate formed with gate lines, data lines and pixel electrodes. Odd rows of pixel electrodes in the same column are connected with one of data lines at two sides of the column, even rows of pixel electrodes are connected with the other one of the data lines; pixel electrodes in the same row are controlled by one of the two gate lines at two sides of the row of pixel electrodes, pixel electrodes controlled by each gate line are located in the same row; there are two gate lines between two adjacent rows of pixel electrodes; two adjacent pixel electrodes in the same row between two adjacent data lines are controlled by one of the two gate lines at two sides of the row of pixel electrodes, and they are connected with one of the two adjacent data lines.

The invention relates to the field of display screens, in particular to an LED display device. The LED display device comprises an LED display screen, a lens array I and a lens array II are sequentially arranged in the front of the LED display screen, and an LED pixel on the LED display screen transmits through the lens array I and the lens array II to form a vertical enlarged image. According to the LED display device, the surface of the LED display screen is covered with the lens array I and the lens array II, the LED pixel is enlarged by the joint effect of the lens array I and the lens array II, and non-luminance gaps between pixels are removed, so that the moire fringe phenomenon between a CCD or CMOS sensor pixel and the LED pixel caused by an included angle when the LED screen is shot by a camera or other digital products is removed, and meanwhile visual image quality and display definition are ensured.

The invention relates to an optical diffusion film and a method for preparing the optical diffusion film. The optical diffusion film comprises a transparent base film, an anti-overlapping layer and a diffusion layer; the anti-overlapping layer is arranged on the back surface of the transparent base film and comprises anti-overlapping particles and a coating layer; the diffusion layer is arranged on the front surface of the transparent base film and comprises diffusion particles and a coating layer; and the diffusion particles are formed by methyl methacrylate resin, polyol resin, silicone, carbamate and dialkoxy hypnone as the photopolymerization initiator through ultraviolet irradiation, curing and polymerization and are imprinted by using a silicone rubber roller to be in compact and orderly hemispherical micro-structures. Compared with the prior art, the optical diffusion film has high optical uniformity and brightness and effectively improved light intensifying capacity.

The invention discloses an optical diffusion film. An optical diffusion layer is coated on one surface of a transparent base film, optical diffusion particles are uniformly distributed in the optical diffusion layer, the optical diffusion particles are transparent polymer spherical particles with diameters of 5 to 50 microns, and the particle diameter distribution of the transparent polymer spherical particles is monodisperse; and the optical diffusion film can effectively improve the optical uniformity. The invention also discloses a backlight module using the optical diffusion film. The backlight module can avoid using a high-cost prism sheet or a brightness enhancement film assembly, and can greatly improve the brightness of a liquid crystal display and save the manufacturing cost of the liquid crystal display.

A transparent ceramic having terbium oxide (Tb2O3) in a molar ratio of at least 40%; and at least one oxide selected among an yttrium oxide, a scandium oxide, and a lanthanide rare earth oxide, wherein (1) the crystal structure of the terbium-oxide-based ceramic does not contain a non-cubic-crystal phase, (2) the mean crystal particle diameter is in a range of 0.5 to 100 mum, and (3) the ceramic comprises a sintering auxiliary having no incidence of deposition of a non-cubic-crystal phase in the crystal structure of the terbium-oxide-based ceramic. This transparent ceramic makes a magneto-optical element that performs at least as well as terbium gallium garnet or other existing monocrystal materials. It also makes a functional element for an optical isolator in the infrared region between 500 nm and 1.5 mum having very little scattering and very few birefringence components.

The invention relates to an optical imaging method and an optical imaging system for a large-scale high-resolution remote sensing camera. A micro lens array is arranged between a front object lens and a focal plane of a detector. The front object lens adopts a concentric and symmetrical spherical lens structure to obtain a large-field scene. Each passage of the micro lens array consists of a group of separated doublet lenses. The separated doublet lenses are used for realizing fine aberration correction within a small field range of the passages undertaken by the separated doublet lenses to form a plurality of independent imaging passages, so as to image all information in the entire field onto the focal plane of the detector without any loss and obtain high-resolution images with diffraction limit performance at all positions in the large field. The optical imaging system for the large-scale high-resolution remote sensing camera has the characteristics that since an pure transmission-type optical structure is adopted, the structure is simple and compact, the system is suitable for the entire visible light working wavelength range, the view field is large, the image quality of the entire view field is uniform, the imaging performance is excellent, the cost is low and the like. The space resolution of the multi-scale optical imaging system provided by the invention is not limited by the view field and the multi-scale optical imaging system is suitable for remote sensing cameras for earth observation and general survey.

The present invention provides a fluorophosphate glass containing phosphorus, oxygen and fluorine as glass ingredients, in which, provided that a refractive index nd of the glass is nd(1) and a refractive index nd after re-melting the glass at 900° C. for 1 hour in a nitrogen atmosphere, cooling the glass to a glass transition temperature and then cooling the glass down to 25° C. at a temperature decrease rate of 30° C. per hour is nd(2), an absolute value of a difference between nd(1) and nd(2) (nd(2)-nd(1)) is equal to or less than 0.00300, and a molar ratio (O2− / P5+) of a content of O2− to a content of P5+ is equal to or more than 3.5. The glass of the invention is reduced in volatility and erosiveness.

A synthetic quartz glass substrate having (i) an OH concentration of 1-100 ppm and a hydrogen molecule concentration of 1×1016-1×1019 molecules / cm3, (ii) an in-plane variation of its internal transmission at wavelength 193.4 nm which is up to 0.2%, and (iii) an internal transmission of at least 99.6% at wavelength 193.4 nm is suited for use with excimer lasers.

A directional backlight unit and a three-dimensional image display apparatus including the directional backlight unit are provided. The directional backlight unit includes a light source, a light guide plate guiding light emitted from the light source, and a diffraction device including a plurality of sections. Each of the sections includes a grating pattern set configured to adjust the direction of light incident from the light guide plate.

An injection mold for forming a light guide plate including a first block, a second block configured to face the first block, a forming portion included between the first and second blocks facing each other and having a shape of the light guide plate, an injection portion formed at the first block and configured to receive injected resin for forming the light guide plate, and a gate portion configured to guide the injected resin from the injection portion to the forming portion. Further, a width of a first end portion of the gate portion that is connected to the forming portion is 50%-80% of a width of the forming portion.

The invention discloses a pure-oxygen-atmosphere annealing device and method. According to the method, a material required for being annealed is loaded into quartz tubes, the quartz tubes are placed in an aluminum-oxide ceramic sleeve which is uniformly wound by nickel-chromium wires, oxygen of stable flow is introduced into the quartz tubes, the internal furnace temperature is uniformly and slowly increased, heat of a heater is transferred to crystals to be annealed in a radiation manner, and a temperature control instrument controls a heating-up rate, the degree of a constant temperature, the time for constant temperature and a cooling rate, so that the fully-automatic unattended annealing is realized, and the annealing temperature can reach 1,300 DEG C. The pure-oxygen-atmosphere annealing device and method disclosed by the invention are applicable to the pure-oxygen-atmosphere annealing of materials, such as laser crystals, scintillation crystals and the like, the annealing efficiency is high, and the light emitting efficiency of the laser and scintillation crystals can be increased by 20-40%; after annealing, the brightness, transparency, crystalline perfection and optical uniformity of the crystals can be greatly improved; and the pure-oxygen-atmosphere annealing device has the advantages of stable temperature field, simplicity and reliability, good universality and low energy consumption, so that the annealing cost is reduced.

There are provided low expansion transparent glass-ceramics obtained by heat treating a base glass produced at a relatively low melting temperature of 1530° C. or below. The glass-ceramics have an average linear thermal expansion coefficient within a range from +6×10−7 / ° C. to +35×10−7 / ° C., 80% transmittance wavelength (T80) of 700 nm or below, internal transmittance of 75% or over at light wavelength of 1550 nm, heat resisting temperature of 800° C. or over and Young's modulus of 90 GPa or over. The glass-ceramics comprise SiO2, Al2O3, MgO, CaO, BaO, ZnO, Li2O, TiO2 and ZrO2 and contain β-quartz or β-quartz solid solution as a predominant crystal phase. There are also provided optical waveguide elements and an arrayed waveguide grating (AWG) type planar lightwave circuit utilizing these glass-ceramics.

The invention relates to a double crucible laminar leakage pouring based making device and method for a soft glass optical fiber perform. The device comprises an inner crucible and an outer crucible that are coaxial. The outer crucible is longer than the inner crucible so as to be able to completely surround the inner crucible after melting sealing. The inner crucible and the outer crucible are internally provided with a stirring apparatus respectively. The lower part of the inner crucible has an outlet communicated with a die, and the die is internally equipped with a piston and an electric driving mechanism thereof. The inner crucible and the outer crucible are placed in a high temperature furnace, the die is placed in a heating element, and the die and the electric driving mechanism are placed on a lifting platform. The inner crucible, the outer crucible, the stirring apparatus, the high temperature furnace, the heating element and the lifting platform are installed on a tower frame respectively. According to the invention, the descending speed of the piston determines the leakage pouring rate, and by controlling the viscosity and leakage pouring rate of molten glass, the Reynolds number of the leakage pouring process can be controlled, thus ensuring a laminar leakage pouring process.

The invention discloses a new technique for growing yttrium aluminium garnet (YAG) crystals and a device thereof. The technique uses an intermediate frequency induction heating Bridgman-Stockbarge crystal growth method, and employs a new technique for synchronously and continuously feeding a high-temperature melt with gradual crystal growth in the growth procedure. The new technique perfectly solves the problems that a large crucible is used for growing small crystals as the concentration distribution of doped ions in grown crystals is uneven caused by small segregation coefficient of the doped ions when YAG high-temperature melt is crystallized and Nd:YAG is grown by a pulling method. The provided technique can help grow doped YAG crystals with large size, higher crystal bar cutting utilization rate, even concentration distribution of doped ions and good optical homogeneity. The technique satisfies the constant new requirements of the solid laser technical field for the YAG crystals.

The production process of light guide plate includes the following steps: providing one mold; melting resin material; pouring the molten resin material into cavity of the mold; cooling the mold while maintaining pressure; and demolding to form light guide plate product. The mold has wedged or disc cavity including one plane and one slant or notched surface, and the refrigerant passage for the cooling step is parallel to the plane.

The present invention provides a method for producing an optical compensating sheet, comprising a step of simultaneously coating at least two coating solutions on a transparent support, wherein at least one of the coating solutions simultaneously coated in that step contains a liquid crystalline compound and another coating solution contains a surface active agent; an optical compensating sheet obtained by this method; an optical film comprising a support having thereon an optically anisotropic layer formed containing a liquid crystalline compound and a fluoroaliphatic group-containing copolymer containing a repeating unit derived from a fluoroaliphatic group-containing (meth)acrylate monomer and a repeating unit derived from a polyoxyalkylene (meth)acrylate monomer; and a polarizing plate and a liquid crystal display device each using the optical compensating sheet or optical film.

An embodiment of the invention provides an evaporation source, an evaporation device and an evaporation method, relates to the field of vacuum evaporation coating and can solve the problem of non-uniform evaporation coating thickness at different evaporation areas of a to-be-evaporated substrate in the process of evaporation due to existing linear or planar evaporation sources. The evaporation device comprises an evaporation crucible and multiple evaporation nozzles arranged on the outlet side of the evaporation crucible in one row at least. An evaporation material cavity is formed inside the evaporation crucible, and the side wall on the outlet side of the evaporation crucible is provided with a through cavity communicated with the evaporation material cavity; each evaporation nozzle comprises a sprayer and a moving portion fixedly connected with the sprayer, each sprayer is communicated with the evaporation material cavity through the through cavity, and each moving portion is arranged in the through cavity and can rotate in the same to enable the corresponding sprayer to be driven by the moving portion to swing.

The invention discloses a preparation method of a periodically poled Ti-diffusion near-stoichiometry lithium niobate slab waveguide. The preparation method includes the eight steps of sample preparation, photoetching, sputtering of a Ti-metal film, stripping, pre-diffusion of the Ti-metal film, Li-rich VTE processing, polishing of an optical waveguide end surface and periodical poling. Compared with the prior art, the optical waveguide is good in performance, small in loss and good in optical uniformity, has a few crystal defects, has the unique advantages of being high in speed, low in noise, high in efficiency and free of chirping in the wavelength conversion process, converts multiple wave lengths downwards and upwards simultaneously at the same efficiency, and can realize fully transparent conversion.

The invention discloses a LED illumination device, including a lamp house, a circuit board, an LED source, a first reflecting element, a second reflecting element and a light cover, wherein the circuit board is arranged on the bottom of the lamp house and the LED source is electrically connected on the surface of the circuit board. The first reflecting element is a reflecting board, on which at least a via hole is arranged corresponding to the LED source passing through the via hole. The second reflecting element includes a bottom board, from which at least two opposite side walls are formed and at least a mat film corresponding to the LED source. The mat film extends from one side wall to the center of the side wall. A plurality of loophones are arranged on the side walls near the mat film and the bottom board has at least a first opening corresponding to the mat film, which covers the corresponding LED lamp-house. The lamp cover is covered at the opening of the lamp house. The illumination device has better optical property.

This invention relates to an annealing process method for crystals in neutral and inert atmosphere, which puts crystals to be annealed and processed in a crystal anneal device to charge neutral, or inert or mixed gas to carry out annealing of the crystals and realize carbon, color center elimination, pollution elimination and eliminating the inner stress of the crystals to each their recrystalization. The annealing at high temperature in the neutral or inert gas will not generate new lattice defect and variance of ionic valence by the strong adsorption of inert gas under high temperature.