106 results about "Refraction coefficient" patented technology

The invention relates to an insulating mould coating, a laminated glass intermediate film, a piece of heat-protecting glass and a piece of laminated glass thereof. The transparent insulating mould coating is prepared by dissolving a thermal plastic macromolecule resin into a solvent, then adding a nanometer material body sizing agent and other auxiliary agents and stirring the mixture evenly. Theinsulating mould coating can be coated on glass and transparent resin film materials, and has very strong bonding strength, and refraction coefficients similar to that of the glass and the laminated glass intermediate film; and the insulating laminated glass prepared by using the insulating mould coating has the characteristics of high visible light transmittance, infrared ray shielding, heat insulation, ultraviolet ageing resistance and the like. The insulating mould coating is simple to prepare, needs no large-scale equipment, and is favorable for popularization.

The invention discloses a high double-refraction elliptical porous terahertz waveguide which is mainly used for the fields of maintaining single polarization transmission and sensing terahertz polarization of a terahertz wave. In order to overcome the defects of difficult waveguide preparation and fixed and unadjustable double-refraction coefficient in the prior art, an elliptical air hole array is allotted on the cross section of the high double-refraction elliptical porous terahertz waveguide; and furthermore, the external boundary of the cross section of the waveguide is also in an ellipse. The invention has the advantages of low transmission consumption, high and adjustable double-refraction coefficient, low preparation cost and easy utilization.

The invention relates to a method for simulating an underwater polarization field of wave water surface transmitted light. The method comprises the following steps: firstly, building a polarization model based on Rayleigh scattering sky light, and calculating the polarization of incident sky light; according to different refraction coefficients corresponding to a parallel component and a vertical component of an incident light E vector, obtaining a Mueller matrix of a refraction process of a calm water surface; secondly, building a probability distribution model of a wave water surface element gradient, unifying the reference coordinate systems of the incident light and transmitted light, considering the shield effect among wind waves, and obtaining a Mueller matrix of a refraction process of a wave water surface; and finally, combining the Stokes parameter representation method to obtain a polarization field distribution mode of underwater transmitted light. The method can successfully simulate polarization characteristic distribution of underwater transmitted light of different sun positions and takes the influence of wind speed and wind direction on underwater light field polarization characteristic distribution into consideration. Meanwhile, the method can reveal polarization distribution rules of underwater transmitted light in a Snell window.

The invention discloses an optical nonlinearity measuring device and a measuring method for nonlinearity thick photonics materials, and belongs to the technical field of nonlinearity photonics materials and nonlinearity photonics measurement. Tophat type laser pulses serve as probe light, a reference standard sample with the suitable thickness is selected according to the thickness of a sample to be measured, the reference standard sample and the sample to be measured are subjected to Z scanning measurement respectively, energy of incident light is adjusted to obtain the same normalization transmittance peak-to-valley values, and a nonlinearity refraction coefficient of the sample to be measured is obtained by data processing. The optical nonlinearity measuring device and the measuring method for nonlinearity thick photonics materials are suitable for nonlinearity photonics materials of which the thicknesses exceed a Rayleigh length.

The invention discloses a display device which comprises an upper substrate, a lower substrate, a solvent between the upper substrate and the lower substrate and elliptic balls, wherein the elliptic balls are located between the upper substrate and the lower substrate and used for forming photonic crystals, and have electromagnetic properties. According to the display device, elliptic nanometer or submicron order balls form the photonic crystals, a light refraction coefficient is changed, light in different colors is reflected, and a colored image is displayed. Problems that an electronic paper display device based on spherical micro-balls can only display a black-and-white image or a colored image which is single in color, poorer in effect, long in response time and high in price, and a colored film of a liquid crystal display device causes optical loss in the prior art are solved.

The invention pertains to thermo-resistant and light-resistant dichroic polarizers based on thin films of dichroic matters, in particular organic dyestuffs, in which molecules are ordered in a crystalline structure and applied on the surface of the substrate. The dichroic polarizer is characterized by the fact that it contains at least one anisotropically absorbing film comprised of oriented molecules. Anisotropically absorbing film is characterized by the fact that for the major axes of the ellipsoids of the real and imaginary parts of anisotropic refraction coefficient in the range of at least one absorption band of the following is true on the area with linear dimensions no less than the maximum wavelength:

K₁≧K₂>K₃$\frac{\left(n_1+n_2\right)}{2}>n_3$

where K₁, K₂, K₃ and n₁, n₂, n₃, are main values of the semiaxes of the ellipsoid representing the imaginary and real parts, accordingly, of the anisotropic refraction coefficient, and/or the anisotropically absorbing film is characterized by the fact that light transmission by two films with cross-oriented polarization axes does not increase at least in some range of wavelengths upon the deviation of its propagation from the normal to the polarizer plane.

The coherent imaging method of 4f position based on the Michelson's interferometer is the nonlinear refractive method of 4f position coherent imaging measuring medium based on the Michelson's interferometer. It can solves the problem of data treating bother, nonlinear absorption of traditional 4f coherent imaging technology and the small deform range, high request for stability and complex data treating of Mach-Zehnder interference. The method is composed of the processes: one: starting and adjusting the device; two: collecting the image without image; three: collecting the linear image; four: collecting the nonlinear image; five: computing the linear penetrant ratio; six: computing the nonlinear phase movement; seven: computing the third-order nonlinear refraction coefficient.

The invention relates to a light-emitting diode device which at least comprises a buffering layer, a non-InAlGaN-doped layer, a first conductive InAlGaN layer, an active layer, a second conductive InAlGaN layer and a light transmission nitrogen-oxide structure which are stacked on a substrate in sequence; the light transmission nitrogen-oxide structure is provided with a first surface and a second surface which are opposite, wherein the first surface faces and is joined with the surface of the second conductive InAlGaN layer; and the light transmission nitrogen-oxide structure is a structure with graded refraction coefficients which decrease from the first surface direction to the second surface direction. The light-emitting diode device can reduce the light reflection effect between interfaces of different materials, the loss of the critical angle of total reflection and the like, increase the light extraction efficiency of the light-emitting diode, achieve the optimal current distribution result through controlling the current distribution by the light transmission layers, and prevent the injected current from flowing through the active layer below the metal electrode, thereby further increasing the light emitting efficiency.

The present invention discloses application of a multi-channel optical nonlinearity measurement technology to measure the third-order nonlinear refraction coefficient of a medium. According to the present invention, with numerical simulation, a linear relationship is formed in the range of 0-0.65; in the experiment, the results of a sample to be measured and a standard sample can be directly measured, and by using the linear range, the third-order nonlinear refraction coefficients of a plurality of samples to be measured can be measured through the measuring, such that the complex fitting calculation required by the original single-4f system is avoided; and the experiment results verify that the method of the present invention is correct.

The invention discloses an integrated bandpass filter, a manufacturing method thereof and a spectrometer. The integrated bandpass filter comprises a metal layer and a layer which is mainly made of metal. The metal layer is provided with a through micrometer or nanometer hole array. The characteristic wavelength lambda of light which penetrates through the metal micrometer or nanometer hole approximately satisfies a formula lambda approximately equals with nD, and hereon, n is the refraction coefficient of a filling material in the metal hole, and D is diameter or width of the metal hole. Each metal hole in the integrated bandpass filter is a bandpass filter. Through changing the size of the metal hole, a large number of miniature bandpass filters with different gating wavelengths are integrated on a small chip through a one-time machining method. Furthermore the process manufacturing method of the integrated bandpass filter is compatible with a CMOS process. Low cost is realized. Furthermore the metal hole, particularly the metal hole with a smooth inside wall and uniform hole diameter can be prepared in a relatively simple manner.

The invention provides a processing method of monitored elevation data of an open mine pit slope based on a measurement robot. The method comprises the following steps: obtaining monitored basic data of the open mine pit slope, which is acquired by the measurement robot; establishing a model of a height difference between a distance measuring optical path curve of the measurement robot and the ground, and an atmosphere vertical refraction physical quantity gradient model on a distance measuring optical path; obtaining an instrument height and a beacon height of the measurement robot; calculating the height difference from a monitoring base point subjected to atmosphere refraction revising and a monitoring point according to an included angle, a slope distance and a horizontal distance from the monitoring base point to the monitoring point, an atmosphere refraction coefficient on the distance measuring optical path curve and the instrument height and the beacon height of the measurement robot; obtaining an elevation of the revised monitoring point according to the height of the monitoring base point, measured by the measurement robot, and the height difference between the monitoring base point subjected to atmosphere refraction revising and the monitoring point. The elevation data is processed by utilizing the method provided by the invention, the precision of the elevation data can be relatively greatly improved and the reliability of a monitoring result is improved, so that a foundation is laid for real-time early warning of landslip of the open mine pit slope.

The invention relates to a liquid crystal display device which comprises an array substrate, an opposed substrate and liquid crystal molecules located between the array substrate and the opposed substrate, and at least one side of the array substrate and the opposed substrate is provided with a compensation film; the liquid crystal display device further comprises a red pixel, a green pixel and a blue pixel, wherein the liquid crystal molecules in the red pixel region, the green pixel region and the blue pixel region have different double refraction coefficients. The invention facilitates hue errors in the three pixel regions to be kept consistent by setting the liquid crystal molecules in the red pixel region, the green pixel region and the blue pixel region with different double refraction coefficients, so that the current ordinary compensation films can effectively compensate the three pixel regions simultaneously.

The related organic LED display comprises: a substrate, an organic LED with at least an anode and a luminescent layer and a transparent cathode, and the transparent conductive filling material on cathode surface. Wherein, the refraction coefficient of filling material is almost same as the cathode. Thereby, this invention can reduce the rate of light total reflected into the cathode, and decreases drive voltage on cathode.

The invention discloses a phase diaphragm (2) capable of measuring optical nonlinearity of material, comprising a phase object (13), wherein the phase delay between the phase object (13) and the phase diaphragm (2) is Pi/2; the phase object (13) is a symmetrical square. The invention can effectively measure and distinguish the size and symbol of the third-order nonlinear refraction coefficient of a medium without influencing the measuring sensitivity.

The invention provides a third-order nonlinear optical material, namely a tetrabutyl ammonium fullerene ball and a synthesizing method thereof, which belongs to the field of functional materials. The prior inorganic and organic nonlinear optical materials have the problems of easy deliquescence, poor thermal stability, complicated preparation and the like respectively. The molecular formula of the tetrabutyl ammonium fullerene ball provided by the invention is (NH4)18[(C16H36N)4]24[Mo132O372(H2O)72(CH3COO)30].ca.7NH4CH3COO.ca.173H2O. In the method, after {Mo132} and tetrabutyl ammonium bromide are dissolved in water respectively according to the mass ratio of 1 to 42, and are adjusted by acetic acid respectively until the pH value is between 3.5 and 4.5, the {Mo132} and the tetrabutyl ammonium bromide are mixed to obtain the tetrabutyl ammonium fullerene ball. The third-order nonlinear optical material has the advantages of uneasy deliquescence, high thermal stability, larger nonlinear absorption and non-linear refraction coefficient, self-defocusing property and simple preparation.

A wavelength-converting device used for converting first waveband light includes a transmissive substrate, a phosphor layer and an optical layer. The transmissive substrate has a refraction coefficient n_s, the refraction coefficient n_s is greater than an environmental refraction coefficient n_amb. The phosphor layer is disposed over a side of the transmissive substrate for converting the first waveband light into second waveband light. The optical layer is disposed over the other side of the transmissive substrate opposite to the phosphor layer for reflecting the second waveband light. The optical layer has an effective refraction coefficient n_r. The relation between n_s, n_amb and n_r is given by n_r>2(n_amb²)/n_s. As a result, the light leakage is avoided, the fabrication is simplified, and the difficulty of material selection is reduced.

A multiplayer photorefraction diffused optics element includes the base sheet which has the first surface and the second surface corresponding to the first surface; at least two diffused layers in which at least one is set on the first surface and at least one diffused layer is set on the second surface. The each diffused layer includes at least above one kind of the diffused particle with different size and the optical material which has the different refraction coefficient.

The invention provides an LED package structure which comprises a bearing unit, an LED chip and a composite material layer. The LED chip is positioned on the bearing unit; and the composite material layer is partially or completely covered on the surface of the bearing unit which is close to the LED chip; wherein, the composite material layer comprises resin material and inorganic dielectric material, and the resin material is provided with a first refraction coefficient; the inorganic dielectric material is mixed in the resin material and is provided with a second refraction coefficient, wherein, the first refraction coefficient is less than the second refraction coefficient, and the difference value between the first refraction coefficient and the second refraction coefficient is at least more than 0.2. The LED package structure can increase ray reflectivity of the LED package structure by modifying materials, which improves the light emitting efficiency of the LED package structure and greatly prolongs the service life of the LED package structure.