346results about How to "Improve polarization performance" patented technology

Perpendicular magnetic anisotropy and Hc are enhanced in magnetic devices with a Ta/M1/M2 seed layer where M1 is preferably Ti, and M2 is preferably Cu, and including an overlying (Co/Ni)_X multilayer (x is 5 to 50) that is deposited with ultra high Ar pressure of >100 sccm to minimize impinging energy that could damage (Co/Ni)_X interfaces. In one'embodiment, the seed layer is subjected to one or both of a low power plasma treatment and natural oxidation process to form a more uniform interface with the (Co/Ni)_X multilayer. Furthermore, an oxygen surfactant layer may be formed at one or more interfaces between adjoining (Co/Ni)_X layers in the multilayer stack. Annealing at temperatures between 180° C. and 400° C. also increases Hc but the upper limit depends on whether the magnetic device is MAMR, MRAM, a hard bias structure, or a perpendicular magnetic medium.

A method for manufacturing an optical film laminate including subjecting a laminate including the non-crystallizable ester type thermoplastic resin substrate and the polyvinyl alcohol type resin layer formed on the non-crystallizable ester type thermoplastic resin substrate to an elevated temperature in-air stretching to form a stretched laminate comprising a stretched intermediate consisting of a molecularly oriented polyvinyl alcohol type resin, impregnating the dichroic material in the stretched laminate to form a dyed laminate including a dyed intermediate comprising a polyvinyl alcohol type resin layer having the dichroic material impregnated therein in an oriented state, and stretching the dyed laminate in boric acid solution to form an optical film laminate.

A manufacturing method of a wire grid polarizer includes the steps of: preparing a mold; sequentially forming a metal foil and a polymer on a substrate; molding a polymer by using the mold; etching the metal foil by using the molded polymer, and forming a wire grid pattern; and removing the polymer.

The invention discloses a polarized light-emitting diode (LED). An LED chip of the polarized LED comprises a work area consisting of an n-type area, p-type area and a quantum well structure, a substrate, an insulating dielectric film, a transparent electrode and a metal electrode. The polarized LED is characterized in that a raised or embedded grating is prepared on the light-emitting surface of the LED chip, and the grating has the period between 50 and 600 nm, the duty cycle between 0.2 and 0.9 and the thickness between 50 and 400 nm. Compared with the prior LED external polarizer for realizing polarization, the polarized LED adopts a technical proposal of directly integrating and manufacturing a grating structure on the surface of the LED chip and achieving the aim that the emitted light of the LED chip is polarized light with no external polarizer and other structures. Therefore, light-emitting devices are greatly reduced in integral volume, optimized in performances and lower in cost. In addition, the polarized LED can be integrated on a light-emitting chip at a time through a semiconductor lithography process, and is easy to realize industrialization, popularization and application.

The invention provides a femtosecond laser multi-modal molecular image system. Near-infrared band pulses, the central wavelengths of which are 1010-1100nm and the spectral widths of which are smaller than 25nm, are provided by adopting a near infrared wave band generation device. The near infrared wave band pulses can motivate an optical medium with strong-nonlinearity to generate femtosecond laser pulses with ultrawide optical spectra, and a pulse measuring and compressing control module measures and compensates femtosecond laser pulses to reach chromatic dispersion accumulated by tissue samples, so that the time-domain widening effect is eliminated. The obtained shortest pulses can be acted with the tissue samples to generate various optical spectrum signals of different modals, so that various nonlinear molecular imaging modals are provided.

A polarizing light guide plate (LGP) unit, a backlight unit employing the polarizing LGP unit, and a display device employing the backlight unit are provided. The polarizing LGP unit includes: an LGP which guides light emitted by a light source; a collimator that is disposed above the LGP and including a plurality of reflective patterns, each pattern having an inclined surface that reflects light exiting the LGP in an upward direction; and a polarization separating layer, disposed between the plurality of reflective patterns and the LGP, which transmits light of a first polarization and reflects light of a second polarization orthogonal to the first polarization.

The invention relates to a novel liquid injection, infiltration and pre-charging process for lithium ion batteries. The process comprises the following steps: (S1) carrying out vacuum operation on a lithium ion battery before liquid injection, injecting a predetermined amount of electrolyte, and filling a proper amount of film forming additive gas into the battery after injection of electrolyte is finished; (S2) employing the manner of cyclical fluctuation negative pressure infiltration, wherein, fluctuation of negative pressure is expressed with a waveform function instead of a simple first grade linear function; (S3) carrying out formation under the conditions of changing negative pressure and changing temperature, wherein, the negative pressure and temperature both increase gradiently with time, a charging current is not constant and varies in a manner of small gradient increase. The invention enables a predetermined amount of electrolyte to be rapidly absorbed by anode and cathode materials and diaphragms of the battery, and absorption time is short while full absorption is realized, thereby improving the utilization rate of the electrolyte and shortening time for liquid injection; addition of a proper amount of film forming additive gas is beneficial for the formation of SEI membranes and enables inreversible capacity loss of the battery in initial charge to be reduced; the method of pre-charging brought forward in the invention enables uniform and stable SEI membranes to form on the surface of electrodes, thereby improving safety performance and electrochemical performance of lithium ion batteries; the process is simple and is easy to control, investment cost for equipment used in the process is low, and the process is easy to realize.

A transflective liquid crystal display has a liquid crystal cell having a liquid crystal layer sandwiched between a pair of transparent substrates each provided with an electrode. A first polarizer is disposed on a viewer's side of the cell. At least one optical retardation compensator is disposed between the polarizer and the cell. A transflector is disposed behind the viewer's side of the liquid crystal layer. A circular polarizer is provided behind the viewer's side of the transflector. The circular polarizer comprises a second polarizer and an optical anisotropic element having a phase difference of approximately ¼ wavelength in the visible light region. The optical anisotropic element has a liquid crystal film with a fixed nematic hybid orientation structure and a stretched film.

Disclosed is an azo compound represented by the formula (1) below, a salt thereof, or a copper complex salt compound thereof.

(In the formula, R1 and R2 independently represent a hydrogen atom, a sulfonic acid group, a lower alkyl group or a lower alkoxyl group; R3-R6 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; R7 represents a lower alkyl group or a lower alkoxyl group; and n represents 0 or 1.)

As means of the present invention, first, on the optical element, a plate-like peripheral edge part which is protruding, while surrounding an effective part having an optical function thereof, outside from the effective part is provided. Furthermore, at a part of the through hole of the holder, a straight cylindrical part is provided. Then, an outer circumference of the peripheral edge part is tightly fitted to an inner circumferential surface of the cylindrical part of the through hole throughout the entire circumference.

An inorganic ceramic coated functional lithium ion battery diaphragm, a preparation method and a lithium ion battery thereof are disclosed. The diaphragm comprises a porous substrate and an inorganicceramic functional coating attached to at least one surface of the porous substrate. The inorganic ceramic coating comprises (by weight): 80-99.4% of plate-shaped boehmite particles, 0.2-3.0% of a water-soluble polymer thickener, 0.2-15.0% of a water-emulsion polymer binder and 0.2-15.0% of a water-soluble polymer binder. By the use of the coating product, thickness of the inorganic functional layer can be effectively reduced, uniformity of the thickness is guaranteed, and excellent high temperature resistance of the coated diaphragm is ensured. As the plate-shaped boehmite particles have thecharacteristic of low hardness, mechanical wear of the coating material is also reduced.

Disclosed is a method for producing a polarizing film, wherein a film composed of a polyvinyl alcohol having a high polymerization degree can be processed into a polarizing film having high polarization performance. The method for producing a polarizing film comprises a step wherein a material film, which has a swelling degree of A (%) and is formed from a polyvinyl alcohol having a polymerization degree of not less than 5,000, is wet stretched 2.0-2.9 times, thereby obtaining a stretched film having a swelling degree of B (%). In this connection, the values A and B satisfy a specific relation. The method for producing a polarizing film preferably comprises, after the wet stretching step, a step wherein the thus-obtained stretched film is further stretched three or less times in an aqueous boric acid solution.

The invention provides a device and detecting method for restraining polarization crosstalk measuring noise by the adoption of a light source. The device is composed of a broadband light source, a polarization device to be detected, an optical path correlator, a difference detecting device, an optical signal converting device and a signal recording device. The device is characterized in that the broadband light source is a low coherent light source with high degree of polarization, and a polarization device provided with high extinction ratio is arranged behind the light source. The detecting method comprises the steps that a polarization state controller is connected between the light source and the polarization device, and the polarizing angle of line polarization light and the polarization device are overlapped with each other seriously through adjusting the polarization state of the output light of the light source. According to the device, the high degree of polarization light source and the high extinction ratio polarization device are combined, the measuring noise in the optical coherent domain polarization can be restrained through increasing the extinction ratio of signal light injected into the device to be detected, and measuring accuracy to the device polarization feature of the device is improved. The device and detecting method for restraining polarization crosstalk measuring noise by the adoption of the light source are simple in structure, excellent in performance and easy to adjust, and can be widely applied to the field of high accuracy measuring and analyzing to optical performances of optical type polarization-maintaining devices and the like.

A method for manufacturing a polarizer of the invention, wherein the polarizer comprises a film that comprises: a matrix made of an optically-transparent resin containing a dichroic absorbing material; and minute domains that are made of an energy ray-curable birefringent material having liquid crystalline properties and are aligned and dispersed in the matrix; and comprising a process of applying energy rays for fixing the alignment of the birefringent material having liquid crystalline properties. A polarizer obtained by the method has a high transmittance and a high polarization degree, and being able to control unevenness of the transmittance in the case of black viewing.

Disclosed is an azo compound represented by the formula (1) or (2) or a salt thereof. The azo compound or the salt thereof has an excellent light-polarizing property, and is extremely useful as a dichroic dye for use in a polarizing plate that shows less color leakage in a visible light range or a polarizing plate for a liquid crystal projector comprising the aforementioned polarizing plate. (1) (2) wherein R₁ represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a hydroxyl group, a sulfonate group or a carboxyl group; R₂ to R₅ independently represent a hydrogen atom, a lower alkyl group, a lower alkoxy group or an acetylamino group; X represents a benzoylamino group which may have a substituent, a phenylamino group which may have a substituent, a phenylazo group which may have a substituent, or a naphthotriazole group which may have a substituent; m represents a numeral number of 1 or 2; and n represents a numeral number of 0 or 1.

The invention discloses a reciprocating integrated optical modulation chip used in an optical fiber gyroscope, which comprises two Y-branching waveguides and an arc-shaped waveguide, wherein one end of the arc-shaped waveguide is connected with a first Y-branching waveguide, the other end of the arc-shaped waveguide is connected with a second Y-branching waveguide, a modulator electrode is respectively disposed at the two sides of the second Y-branching waveguide, the two branching ends of the first Y-branching waveguide are respectively connected with a first port and a second port of the chip, the two branching ends of the second Y-branching waveguide are respectively connected with a third port and a fourth port of the chip, and a reflected radiation film edge, an upper edge, a lower edge and a tail fiber coupling edge are disposed at the circumference of the chip. The integrated optical modulation chip can replace a beam splitter and a Y-waveguide modulator, so as to improve the integration level of the optical system of the optical fiber gyroscope. The invention overcomes the shortcomings of discrete components combination, improves the reliability and environmental performance of the optical fiber gyroscope, is helpful for simplifying the structure of the gyroscope, reduces the space occupation of the system, simplifies the production process of the gyroscope, and can obtain the optical fiber gyroscope with smaller size, high accuracy and high stability.

A plasmonic polarizer and a method for fabricating the plasmonic polarizer are provided. The method deposits alternating layers of non-metallic film and metal, forming a stack. A hard mask is formed overlying the stack. The hard mask comprises structures having dimensions and periods between adjacent structures less than a first length, where the first length is equal to (a first wavelength of light/2). The stack is etched through openings in the hard mask to form pillar stacks of alternating non-metallic and metal layers having the dimensions of the hard mask structures. Then, the hard mask structures are removed. In one aspect, subsequent to removing the hard mask structures, the spaces between the pillar stacks are filled with a dielectric material.

A multi-layer stretched film has 251 or more alternating layers which consist of first layers and second layers, wherein the first layers are made of a polyester which contains (i) 5 to 50 mol % of a naphthoic acid component as a dicarboxylic acid component and (ii) a diol having an alkylene group with 2 to 10 carbon atoms as a diol component; and the second layers are made of a thermoplastic resin having an average refractive index of 1.50 to 1.60 and differences in refractive index among a uniaxial stretching direction, a direction orthogonal to the uniaxial stretching direction and a film thickness direction of 0.05 or less before and after stretching, and the film has specific reflectance characteristics for a P polarization component and an S polarization component.

An inorganic polarizing plate, which contains: a substrate transparent to light in a wavelength range for use; linear metal layers; linear dielectric layers; and linear light-absorbing layers having a light absorbing function, provided in this order, wherein the linear metal layers are aligned being apart from each other on the substrate at a pitch shorter than wavelengths of the light; each of the linear dielectric layers is provided on each of the linear metal layers; each of the linear light-absorbing layers is provided on each of the linear dielectric layers; and a cross-sectional shape of the linear metal layer cut in a direction orthogonally crossing a longitudinal direction thereof is a trapezoid with a bottom base at a side of the substrate, and an upper base at a side of the linear dielectric layer, where the bottom base is longer than the upper base.

The invention discloses a template-based three-dimensional network carbon material/macromolecule functional composite and a preparation method thereof. According to the method, water-dispersed carbonmaterials, such as carbon black, carbon nanotubes and graphene oxides and hydroboron are taken as raw materials; trepanned sponge is taken as a three-dimensional template; the sponge with carbon material/hydroboron composites is obtained through an impregnation method, and is casted with or impregnated in different types of macromolecular materials after drying; finally, the three-dimensional network carbon material/macromolecule functional composite with the relative dielectric constant larger than 103 is obtained. The template-based three-dimensional network carbon material/macromolecule functional composite is widely applied to the fields such as dielectric energy storage materials, electromagnetic shielding, elastic conductors, piezoresistance materials and flexible electronic devices.The preparation method has the advantages of simple process, low cost, high efficiency and the like.