44 results about "Electric vector" patented technology

An exposure system includes: an illumination optical system defining, in an effective illumination source plane, a center region forming a perpendicularly incident light and first and second eccentric regions forming obliquely incident lights having a perpendicular electric vector component perpendicular to a straight line connecting the first and second eccentric regions, the electric vector component being larger than a parallel electric vector component parallel to the straight line, and illuminating the mask pattern with the perpendicularly incident light and the obliquely incident lights; and a projection optical system projecting an image of the mask pattern to a processing object.

The invention discloses a high-linearity degree-of-polarization quantum-well infrared detector with a plasmon micro-cavity coupled structure. The detector is composed of an upper metal grating layer, a quantum-well infrared photovoltaic conversion activating layer and a lower metal reflecting layer, wherein the upper metal grating layer is formed by metal strips. The detector has the advantages that under the mode selection effect of an electromagnetic wave near-field coupled micro cavity formed by plasmon resonance between the upper metal grating layer and the lower metal reflecting layer, photons capable of entering the micro cavity are mainly photons capable of achieving resonance with a detected wavelength polarization mode; the direction of electric vectors of the photons entering the micro cavity is changed to the z direction from the x direction by being modulated in a micro-cavity mode, and the photons can be absorbed by quantum-well sub-bands in a transition mode to achieve the photovoltaic conversion process. With the advantages, the polarization coupled structure can greatly improve the extinction ratio of polarization responses, and extremely-high polarization distinguishing capacity of the detector is achieved.

The invention discloses a tunable single-passband microwave photonic filter based on Brillouin optical carrier recovery. The tunable single-passband microwave photonic filter comprises a tunable laser, an optical coupler, a first optical amplifier, a second optical amplifier, a first optical circulator, a second optical circulator, first-section single-mode optical fibers, second-section single-mode optical fibers, a first optical polarization controller, a second optical polarization controller, a Mach-Zehnder modulator, an optical fiber Fabry-Perot filer, an optical isolator, a high-speed photoelectric detector and an electric vector network analyzer, wherein the first-section single-mode optical fibers and the second-section single-mode optical fibers are each wound together in a compound mode. By means of the tunable single-passband microwave photonic filter based on the Brillouin optical carrier recovery, the microwave photonic filter with single-passband frequency responses can be achieved, the wavelength of outgoing light of the tunable laser can be changed, and the broadband of the filtering passband of the microwave photonic filter can be tunable.

A method for producing a retardation film comprising the steps of: (a) uniaxially stretching an original film for producing retardation film in one direction at either a temperature T1 or T2; and then (b) uniaxially stretching the film stretched in the step (a) in a direction perpendicular to the above-mentioned direction of stretching at a temperature T2 or T1 different from the above-mentioned temperature, in which the original film for producing retardation film has a characteristic that a phase of linearly polarized light entering vertically into the film plane and having an oscillating surface of an electric vector in an X-Z plane against linearly polarized light entering vertically into the film plane and having an oscillating surface of an electric vector in a Y-Z plane lags by uniaxially stretching in the direction of the X axis at a temperature T1, and leads by uniaxially stretching in the direction of the X axis at a temperature T2 different from the above-mentioned temperature T1, in which the X axis is an uniaxially stretching direction, the Y axis is a direction perpendicular to the uniaxially stretching direction in the film plane, and the z axis is a direction of a thickness of the film.

A retardation film composed of a laminated film which comprises a layer A composed of a material having a positive intrinsic birefringence and a deflection temperature under load of Ts(A) and a layer B composed of a material having a negative intrinsic birefringence and a deflection temperature under load of Ts(B), in which a difference between Ts(A) and Ts(B) is 5° C. or more; the retardation film has a stretching temperature T_α which causes delaying of a phase after the stretching to a phase before the stretching and a stretching temperature T_β which causes hastening of a phase after the stretching to a phase before the stretching, in cases of uniaxially stretching in a direction of an X axis by draw ratio of 1.25 at temperature in the range that the retardation film can be stretched, in which the phase is of linearly polarized light ΨX having an oscillating surface of an electric vector in an X-Z plane and entering at an incident angle of 0 degree in relation to linearly polarized light ΨY having an oscillating surface of an electric vector in a Y-Z plane and entering at an incident angle of 0 degree, the X axis is an uniaxially stretching direction, the Y axis is a direction perpendicular to a direction of the X axis in the film plane, and the Z axis is a direction of a thickness of the film; and the retardation film meets a relation of 0.92≦R₄₀/Re≦1.08, wherein Re (nm) is a retardation value of light having a wavelength of 550 nm at an incident angle of 0 degree, and R₄₀ (nm) is a retardation value of light having a wavelength of 550 nm at an incident angle of 40 degrees.

An object of the invention is to provide a surface illumination device and a display device using it, which can contribute to improvement of display qualities. A surface illumination device 10 comprising a light guide plate 1 for propagating incident light inside itself and reflecting the light at the reflecting prism face 1S to output the light from the light exit face. This further comprises: a polarizing plate 3 provided on the light exit face; and an anti-reflection film 4 provided on the polarizing plate 3. The reflecting prism face 1S extends so that a direction of electric vector's vibration of an s-polarized light component of a reflecting light ray caused by an incident light ray in a predetermined propagation direction is in parallel with a polarization axis of the polarizing plate 3, whereby a light efficiency can be improved.

The invention discloses a polarized optic-acoustic microscopic imaging device and method. The device comprises an optic-acoustic excitation light source generation assembly, an optic-acoustic signal processing assembly and a collection platform assembly; and the optic-acoustic excitation light source generation assembly comprises a laser, a first lens, a pin hole, a second lens, a polarizer, a 1/2glass slide, a scanning vibrating mirror and a focusing lens. The method comprises the concrete steps that the laser generates a laser beam, the laser beam passes the first lens, pin hole, second lens, polarizer, 1/2 glass slide, scanning vibrating mirror and focusing lens successively and forms linearly polarized light, the focusing lens focuses the linearly polarized light on a sample to generate an optic-acoustic signal, and the optic-acoustic signal processing assembly reconstructs a sample polarized optic-acoustic and quantitative ordered-degree 3D imaging graph according to optic-acoustic signals, generated by linearly polarized light in different electric vector direction, collected by the collection platform assembly and a medium ordered degree representing parameter. Thus, lossless high-definition 3D polarized light optic-acoustic microscopic imaging and quantitative structured ordered degree imaging can be realized.

The invention discloses an intelligent power nuclear phase device, which comprises a central processing unit (CPU) board, a digital quantity sampling board, an analog quantity sampling board and a liquid crystal display board, wherein the boards are connected through a rear panel bus. The device is characterized by also comprising electric vector acquisition interfaces of intelligent secondary equipment in an intelligent transformer station and conventional secondary equipment in a conventional transformer station; by comparing electric vectors of different interfaces, the purpose of electricphase check is achieved; and the electric vector acquisition interfaces comprise an analog quantity input interface module, a 9-1 interface module, a 9-2 interface module and an FT3 interface module.The device can be used for comprehensive phase check of digital electric quantity and conventional analog electric quantity in the intelligent transformer station, and improves the field engineering debugging and daily operation and maintenance efficiency of the intelligent transformer station.

According to an aspect of the invention, there is provided an exposure apparatus including an illumination optical system which forms an effective light source having a first polarization area where a mask pattern is illuminated with polarized light dominated by an electric vector component radial from a center position on an effective light source plane, and a second polarization area where the mask pattern is illuminated with light whose electric vector vibration is not biased in a specific direction; and a projection optical system which projects an image of the mask pattern onto an object to be processed.

A method for determining field intensity for a particle on a substrate, the method comprising providing an incident wave, determining an electric vector of the field and a magnetic vector of the field inside and outside of the particle, and determining additional scattered fields inside and outside of the particle due to reflection of the incident wave from the substrate.

The invention discloses a method and a device for separating a positive sequence component and a negative sequence component of network voltage or current, relates to control technology of a three-phase converter of an electric power system, and aims to provide a simpler method for separating the positive sequence component and the negative sequence component and a device corresponding to the method. The technical scheme mainly includes that the method includes a negative sequence component extracting step and a positive sequence component extracting step, wherein the negative sequence component extracting step includes the steps: N1, converting a three-phase electric vector including the voltage or the current of a power network into a first vector in a two-phase static coordinate system; N2, delaying the first vector and then rotating the phase position of the first vector to obtain a second vector; and N3, adding the first vector and the second vector to obtain the negative sequence component; the positive sequence component extracting step includes the steps: P1, delaying the first vector and then rotating the phase position of the first vector to obtain a third vector; and P2, adding the first vector and the third vector to obtain the positive sequence component.

The invention provides a polarized light-emitting device. The polarized light-emitting device comprises an excitation source for emitting laser light, and a wavelength conversion device, wherein the wavelength conversion device comprises a heat-dissipating device, a wavelength conversion layer positioned on the heat-dissipating device, and a wire grid polarizer positioned on the wavelength conversion layer; the laser light emitted by the laser source enters the wire grid polarizer; the electric vector direction of the laser light is vertical to the wire grid trend of the wire grid polarizer in order that the laser light can enter the wavelength conversion layer through the wire grid polarizer, and is excited to emit excited light. By adopting the polarized light-emitting device, light penetrating through the wire grid polarizer in non-polarized light emitted from the wavelength conversion layer is polarized light in a specific polarization direction, other light is reflected back to the wavelength conversion layer by the wire grid polarizer to be scattered and reflected, a part of specific polarized light is transmitted out after the other light is emitted from the wire grid polarizer, and most light is emitted in the form of polarized light after repeated circulation.

The invention discloses a front and rear double-drive all-electric permanent magnet shaftless vector propulsion structure for high-speed submarines, which includes a front all-electric permanent magnet shaftless vector propeller, a submarine cavitation maintaining shell and a rear all-electric permanent magnet shaftless vector propulsion structure. The propeller; the front end of the front all-electric permanent magnet shaftless vector propeller is equipped with a front anti-marine life shell, and the rear end is equipped with a front three-dimensional vector rectifying nozzle; the rear all-electric permanent magnet shaftless vector propeller The front end is equipped with a rear anti-sea life shell, and the rear end is equipped with a rear three-way vector rectifying nozzle. The present invention effectively balances the pressure difference in front and rear directions generated during the advancing process of the submarine through the front all-electric permanent magnet shaftless vector propeller, significantly reduces the negative pressure resistance generated by the fluid during the advancing process of the submarine, and provides an auxiliary power source for the submarine. Reduce heat release, reduce noise and loss of efficiency, and the front and rear three-dimensional vector rectification nozzles can effectively reduce the turbulent flow phenomenon generated by the propeller, significantly increase the sailing speed, and enhance concealment.

The invention relates to a method for designing an arbitrary duty ratio Michelson Gires-Touruois interferometer type unequal bandwidth optical interleaver. The method simplifies complicated transmission of a multi-mirror GT cavity and the expression of a light wave electric vector in a reflection direction through z transform in a digital signal processing, calculates the expressions of transmission functions of two paths of output ports of the optical interleaver on the basis, and obtains the cavity length and the arm length difference of the GT cavity, and the reflectivity of each mirror surface of the GT cavity with design principle of an elliptic filter by a limit point value of a transfer function. Particularly, an even-order Michelson Gires-Tournois interferometer type optical interleaver with definite exponent number can be designed to realize the arbitrary duty ratio optical interleaver throughby respectively decomposing two paths of transmission functions of the optical interleaver into sum and difference of two all-pass filters with adjacent exponent numbers. The unequal bandwidth optical interleaver designed by the method has the characters of high flatness, high bandwidth utilization, high isolation, and the like for two paths of output spectrums. Particularly, the design method does not require programming for calculation, has simple calculation, represents better advantages for the situation of cascading a plurality of reflectors, and has wide application prospect in special wave filter, gain equalization and other fields.

A system for measuring an electric field vector includes an optical extractor configured to extract an optical signal having a spatial resolution of a nanometer level. The optical signal corresponds to incident light at a measuring position within an examination area of a surface of a specimen. The system further includes a polarization analyzer for analyzing a polarization characteristic of the optical signal extracted by the optical extractor, and an electric field vector determinator for determining at least a size and an orientation axis of an electric vector at the measuring position using the polarization characteristic analyzed by the polarization analyzer.

The invention belongs to the electric energy metering field and provides an electric-vector included angle measurement circuit and an electric energy meter. According to the invention, a first quasi zero crossing point time coordinate data generation module and a second quasi zero crossing point time coordinate data generation module are used to detect and correct approximated zero crossing point time coordinate data of a sinusoidal signal and outputs quasi zero crossing point time coordinate data respectively. An electric-vector included angle calculator is used to calculate electric-vector included angles of two quasi zero crossing point time coordinate data so as to obtain electric-vector included angle data. An electric-vector included angle measurement result does not influenced by a used sinusoidal signal zero crossing point time coordinate obtaining method and a sampling number of an analog-to-digital converter so that the electric-vector included angle measurement result satisfies a precision measurement requirement.

The invention discloses a DOA-polarization information joint estimation method based on an incomplete electric vector sensor. The performance of the existing parameter estimation algorithm applied to the incomplete electromagnetic vector sensor is severely reduced under the condition of low signal-to-noise ratio. In addition, most algorithms need spectrum searching or parameter matching, and therefore the calculation process is extremely complex. The method comprises the following steps of: 1, dividing two sub-arrays, and performing operation on the basis of a cross-correlation matrix of the two sub-arrays; and 2, the parameter estimation performance under the condition of low signal-to-noise ratio is greatly improved, spectrum search or parameter matching is not required by the algorithm, the calculation speed is further improved, and the effectiveness of the algorithm on signal DOA and polarization parameter estimation is verified by a simulation experiment result.