252 results about "Wire grid" patented technology

The invention discloses a snapshot type broadband full stokes vector measuring instrument and a measuring method, and belongs to the field of micro-nano optics. The snapshot type broadband full stokes vector measuring instrument comprises a wave plate array, a linear polaroid, a light intensity detector and a data processing module; the linear polaroid is installed on the light intensity detector, the wave plate array is installed on the linear polaroid, and the size of the wave plate array is not larger than that of the linear polaroid; and the light intensity detector is electrically connected with the data processing module. The wave plate array is completely arranged on the linear polarizer, the alignment precision during use is reduced, in addition, the small areas of the photosensitive area correspondingly capture light intensity values under different polarization modulations through the wave plate array, calculation inversion can be carried out on the polarization state under single measurement, and the real-time performance of a measurement result is guaranteed. Meanwhile, in combination with the broadband characteristic of the sub-wavelength medium wire grating, the defect that the working bandwidth is limited in the existing full Stokes vector measurement technology is overcome.

An integrated circuit providing hardware security. The integrated circuit comprising a wire grid, wherein the wire grid comprises: (i) a wire grid spanning two metal layers comprising horizontal wires and vertical wires, (ii) a switch at each intersection of the horizontal wires and the vertical wires, wherein each switch comprises a transmission gate, (iii) one or more loop areas, wherein, for each intersection, the transmission gate is programmable to control connectivity at the intersection forming the one or more loop areas, and (iv) one or more amplifiers configured with the loop areas to provide one or more functions including (a) detecting trojans, (b) defending against fault injections by partially canceling injected magnetic fields with induced currents, (c) cancel fault injections by canceling injected magnetic fields, or (d) masking side-channel leakage by generate noising magnetic fields.

An object of the invention is achieved by a method for cutting an elongated shell-type object. The method may include steps of providing a gantry defining a portal and comprising a wire grid operable in the portal; operating the wire grid, whilst moving the shell-type object through the wire grid along a lateral-axis (Z) substantially perpendicular to the portal. The method is performed by a stationary gantry, where the shell-type object is moved through the portal. Thereby, the method is simplified as there is no need for a rail system for moving the gantry.

The invention provides a metal wire grid polaroid and a preparation method and application thereof. The preparation method comprises the following steps: (1) coating a curing adhesive on a base material, performing nano-imprinting and curing by using a silicon wafer mold with a microstructure, and separating the silicon wafer mold with the microstructure to obtain a base material with a micro-nano structure; and (2) pre-baking the base material with the micro-nano structure obtained in the step (1), transferring the base material into a magnetron sputtering cavity, and depositing metal on the surface of the base material with the micro-nano structure through a double-target magnetron sputtering process to obtain the metal wire grid polaroid. According to the invention, the micro-nano grating structure is manufactured by using a nanoimprint process, and the metal layer is sputtered on the surface of the grating structure by using double-target magnetron sputtering, so that an optical effect is realized; the preparation method of the metal wire grid polarizer provided by the invention has the characteristics of rapidness, high efficiency and low cost.

The invention discloses an all-solid-state snapshot full-Stokes parameter measurement and imaging enhancement sensor device. The all-solid-state snapshot full-Stokes parameter measurement and imaging enhancement sensor device comprises a micro-lens array module, a liquid crystal phase modulation module, a polarization wire grating array module and an image sensor module. The micro lens array module is composed of a plurality of micro lenses which are arranged in a two-dimensional mode, and incident light is focused on the photodiode of each pixel. The liquid crystal phase modulation module is composed of two high-speed liquid crystal variable phase delayers, and active phase modulation is carried out on the polarization state of incident light. Polarized light information in four polarization directions can be obtained only through single shooting in the polarization wire grating array module. The image sensor module calculates the full Stokes parametric polarization characteristics of the incident light. According to the invention, full-polarization information measurement of incident light can be realized only through single exposure, and a polarization enhancement mode is switched after measurement is completed, so that the imaging efficiency of the sensor in dark light scenes such as weak contrast target detection is greatly improved.

The invention provides a high-precision alignment method and equipment for laminated iron, and relates to the technical field of laminated iron processing. Wire grid moire fringe marking and concentric circle moire fringe marking are conducted on a substrate and a laminated film, composite marking is achieved, the phase difference of the film is calculated and analyzed by collecting wire grid moire fringe image data, and the alignment precision of the laminated iron is improved. The method comprises the following steps: collecting concentric circle moire fringe image data, fitting a circle center coordinate and a wire grating angle by using Hough transformation to obtain a rotation deviation, and carrying out deviation coupling on the rotation deviation, the transverse deviation and the longitudinal deviation to generate a deviation coupling matrix. The deviation coupling matrix is used for compensating and adjusting the laminating position and compensating errors, high-precision decoupling detection and dynamic correction of translation deviation and rotation deviation are achieved, the transverse, longitudinal and rotation precision is greatly improved, the effective area occupied by the marking size on a base plate is small, and the method is more suitable for production of laminated steel with narrow breadth and high-density typesetting.

The embodiment of the invention provides an auxiliary calibration method of a two-dimensional vision camera, and the method comprises the steps: starting a conveying belt, recording an initial value of a motor encoder, and guaranteeing the accuracy of data recording; the calibration plate is moved to the preset position associated with the industrial robot, and the workbench plane calibration is performed according to the numerical value change condition of the motor encoder, so that the installation inclination error of the workbench can be effectively compensated, and the calibration precision is improved; the industrial robot is controlled to move to the position above a nine-point grid in sequence at the following position of the calibration plate, physical coordinates are recorded, a mapping relation is established in combination with pixel coordinates shot by a camera, a conversion matrix is determined, automatic conversion between a robot coordinate system and a camera coordinate system is achieved, and calibration efficiency and consistency are remarkably improved; the passive electromagnetic calibration needle is matched with the calibration plate with the built-in two-dimensional electrified wire grid, and high-precision positioning is realized by utilizing an electromagnetic induction principle, so that the complexity and the cost of the system are reduced, and meanwhile, the reliability and the repeatability of the calibration process are ensured.

The invention discloses an ultrafast laser generating device. The device comprises an ytterbium-doped femtosecond laser light source, a first focusing lens, a first optical window, a first-stage energy transfer device, a first-stage hollow-core capillary optical fiber, a second optical window, a concave reflecting mirror, a half-wave plate, a wire grid polarizing film, a second focusing lens, a third optical window, a first air chamber, a second-stage hollow-core anti-resonance optical fiber, a second air chamber and a fourth optical window. The invention discloses a 90-degree off-axis parabolic mirror and a frequency resolution optical switch pulse measuring device. The incident pulse spectrum is broadened by utilizing a self-phase modulation effect by changing the type and the air pressure of inert gas in the first-stage hollow-core capillary optical fiber; and then the second-stage hollow-core anti-resonance optical fiber is filled with inert gas to generate an air pressure gradient, and sub-20fs-order ultrafast laser flexible transmission is finally realized by utilizing a soliton self-compression effect.

The invention discloses a transflective display device and a driving method. The transflective display device comprises a display panel, a backlight module and a black light transmitting layer arranged between the display panel and the backlight module. The display panel comprises a first substrate, a second substrate and a liquid crystal layer, the liquid crystal layer adopts a TN alignment mode, the display panel is provided with a plurality of pixel units, the second substrate is provided with pixel electrodes corresponding to the pixel units, the first substrate is provided with an upper polaroid and common electrodes matched with the pixel electrodes, the second substrate is provided with a metal wire grid polaroid, and the metal wire grid polaroid is provided with a metal wire grid. And the light-transmitting axis of the metal wire grid polaroid is perpendicular to the light-transmitting axis of the upper polaroid. A display panel adopting a TN display mode is matched with a metal wire grid polaroid, so that transmission display and reflection display can be realized by adopting a single-layer liquid crystal box, and the thickness of the display device is reduced; the black light-transmitting layer is matched, and the black light-transmitting layer can absorb light penetrating through the metal wire grid polaroid, so that the brightness of a black state is reduced, and the contrast ratio during reflection display is improved.

The invention relates to the technical field of force sensors, in particular to a miniature six-dimensional force sensor and a manufacturing method thereof, and the sensor comprises an elastic body which comprises an outer ring, an inner ring and a strain beam connected between the outer ring and the inner ring; the lower supporting piece is connected with the outer ring in an attached mode, and the face, facing the elastic body, of the lower supporting piece is provided with an inwards-concave containing cavity. The upper supporting piece is connected to the face, away from the lower supporting piece, of the elastic body, a boss protruding towards the elastic body is arranged on the upper supporting piece, the boss protrudes out of the lower surface of the upper supporting piece, and the boss is connected with the inner ring; wherein no more than two silicon strain gauges are fixed on the patch surface of each strain beam, and a first wire grid area arranged along the length direction of the strain beam and a second wire grid area arranged along the direction perpendicular to the first wire grid area are integrated on each silicon strain gauge. And the wire grids for detection in two directions are integrated on the silicon strain gauge, so that the number of patches is reduced, and the precision and the consistency of the patches are favorably controlled.

The ecological restoration structure is characterized in that a plurality of rows of grouting holes are drilled in the step side slope from the top to the bottom, anchor rods are arranged on the inner sides of the grouting holes, and mortar filling layers are arranged between the anchor rods and the grouting holes; the grouting holes in each row are connected and fixed through transverse supporting ropes, and the vertical corresponding grouting holes in each row are connected and fixed through longitudinal supporting ropes; a plurality of square-shaped areas are formed between the transverse supporting ropes and the longitudinal supporting ropes. Galvanized steel wire grids are connected with the adjacent transverse supporting ropes, the adjacent longitudinal supporting ropes and the adjacent anchor rods in each square-shaped area through sewing steel ropes. A galvanized steel wire rope net is arranged above each galvanized steel wire grid from the top to the bottom of the step slope, and the galvanized steel wire rope nets are fixedly connected with the anchor rods, the transverse supporting ropes and the longitudinal supporting ropes. A net hanging spray-seeding layer is further arranged on the outer side of the step slope. By applying the method, the problems that in the background technology, loose objects on the step slope of the open stope are loose in structure and poor in stability, and bedrock layers are prone to being affected by weathering and karst can be solved.

Provided is an optical multi-pass imaging device including an aperture diaphragm (AD), and an optical element block including a front surface facing an object on which the AD is disposed and a back surface facing an image plane, the optical element block being optically coupled with the AD, wherein the optical element block includes at least one lens element, a wire grid polarizer (WGP), a quarter wave plate (QWP), and a cholesteric liquid crystal (ChLC) layer, wherein the WGP, the at least one lens element, the QWP, and the ChLC layer are disposed to provide a predetermined multi-transmission of radiation light from an object side to the image plane.

According to an aspect, a detection device includes: an optical sensor comprising a plurality of light-receiving elements configured to receive light; and a front light that is located on an object to be detected side of the optical sensor and comprises a light guide film and a plurality of light sources configured to emit light to a first side surface of the light guide film. A wire-grid polarizer configured to separate the light incident from the light source into first polarized light and second polarized light is located between the optical sensor and the front light.

A light-emitting transistor is disposed on a base substrate and includes a gate layer, a first insulating layer, a source layer, a barrier layer, a light-emitting functional layer, and a drain layer arranged in sequence along a direction away from the base substrate. The source layer includes a first wire grid structure, the first wire grid structure includes a plurality of first conductive strips arranged at intervals, and the plurality of first conductive strips are parallel to each other. The barrier layer covers surfaces of the plurality of first conductive strips, and a surface of the barrier layer away from the base substrate is parallel to the base substrate.

Provided is an optical instrument capable of obtaining desired polarization characteristics. The optical instrument is an optical instrument provided with a light source, an incident-side polarization element, a light modulation element, an exit-side first polarization element, and an exit-side second polarization element. The exit-side first polarization element has a wire grid structure and is provided with a plurality of convex portions arranged separately from each other at a pitch shorter than the wavelength of light of a wavelength band used by the light source on one surface of a transparent substrate. The rotation angle of the transmission axis of the exit-side first polarization element with respect to the transmission axis of the incident-side polarization element is within ±8.5°. The exit-side second polarization element has a wire grid structure and is provided with a plurality of convex portions arranged separately from each other at a pitch shorter than the wavelength of light of a wavelength band used by the light source on one surface of a transparent substrate. The convex portions are lattice-shaped convex portions extending in a predetermined direction. The lattice-shaped convex portions sequentially have a reflection layer, a dielectric layer, and an absorption layer from the transparent substrate side. The rotation angle of the absorption axis of the exit-side second polarization element with respect to the absorption axis of the incident-side polarization element is within ±0.7°.

Provided is a structurally birefringent inorganic wavelength plate having excellent heat resistance and durability and having a fine pattern. Furthermore, the present invention provides a method for producing an inorganic wavelength plate, which has a high yield even in the form of a fine pattern, can easily achieve a desired phase difference, and can stably obtain the desired phase difference. An inorganic wavelength plate having a wire grid structure is obtained by selective interaction between a polymer having a repeating unit containing a carbonyl group and a metal oxide precursor, the inorganic wavelength plate being provided with a transparent substrate and lattice-shaped protrusions, and lattice-shaped protrusions that are arranged on at least one surface of the transparent substrate at a pitch shorter than the wavelength of light in the use frequency band and extend in a predetermined direction, the lattice-shaped protrusions being mainly composed of a metal oxide.

The invention provides a two-dimensional sensing grid suitable for monitoring damage to the bottom of a battery pack of an electric vehicle and the electric vehicle. The two-dimensional sensing grid comprises a first wire group, a second wire group and a third wire group, wherein the first wire group is attached to the bottom of a lower box body of the battery pack in an insulating manner in a first direction in a spraying manner; the second lead group is attached to the bottom of the lower box body of the battery pack in an insulating manner according to a second direction in a spraying manner; the first wire group and the second wire group are insulated and intersected in a plane where the bottom of the lower box body of the battery pack is located to form a wire grid; the wiring ends on the two sides of the first wire group and the second wire group are used for being electrically connected with an electric signal detection module, so that the monitoring unit can be suitable for battery packs with different actual structure surfaces, the material and construction cost of the monitoring unit is reduced, and the monitoring sensitivity and reliability are improved.

This suppresses the tilting of the convex portions of the grid structure caused by the formation of the functional film, thereby improving optical properties. [Solution] The wire grid polarizing element 1 comprises a substrate 10, a grid structure 20 in which a base portion 21 and a plurality of protrusions 22 are integrally formed, a functional film 30 covering a portion of the protrusions 22, and a reinforcing film 51. The reinforcing film 51 is made of an inorganic oxide and is interposed between a portion of the protrusions 33 covered by the functional film 30 and the functional film 30, reinforcing the protrusions 22. The reinforcing film 51 covers at least the tip 22a and the upper sides of both sides 22b of the protrusions 22. The functional film 30 covers the top of the protrusions 22 via the reinforcing film 51, but does not cover the bottom side of the protrusions 22 or the base portion 21, and its coverage rate (Rc) is 30% or more and 70% or less.

The invention belongs to the technical field of optical measurement, and relates to an MEMS fatigue evolution law observation device based on off-axis digital holographic microscopy, which comprises a red light super-radiation light-emitting diode light source, a wire grid type beam splitter, an objective lens and a CCD, and is characterized in that a linear polarizer, a half-wave plate and the wire grid type beam splitter are fixedly arranged on a light path emitted by a red light super-radiation light-emitting diode; a half-wave plate, a beam expanding lens group, a plano-convex lens, a beam splitter prism, an objective lens and a sample table are fixedly arranged on an object light path in sequence, a reflector is arranged on a vertical light path, and an optical delay line, the beam expanding lens group and the plano-convex lens are fixedly arranged on a reference light path; after the reference light passes through the reflector and the beam splitter prism, the reference light interferes with the object light reflected by the beam splitter prism on the CCD and is observed. According to the invention, the hologram of the MEMS device under high-frequency vibration can be acquired, and the surface topography of the MEMS device is obtained through computer rapid phase unwrapping, so that the purpose of observing fatigue evolution of the MEMS structure in real time is achieved.

The invention provides a holographic metasurface structure. The holographic metasurface structure comprises a metal wire grating; the electric control optical switch layer is arranged on one surface of the metal wire grating, and the electric control optical switch layer is controlled by a control signal to be opened or closed; the geometric phase nanopillar array is arranged on the surface, away from the metal wire grating, of the electric control optical switch layer, and each nanopillar in the geometric phase nanopillar array has a preset horizontal size, a preset vertical size and a preset rotation angle. According to the invention, the display of a dynamic holographic image with a wide field of view and a large size can be realized.

The utility model provides a bending resistance testing device for cold-formed thin-walled section steel, which relates to the field of steel testing devices, is used for testing steel and comprises a shell, a positioning table is hinged to the right end of the shell, a pressure applying component is arranged in the left end of the shell, a plurality of hydraulic cylinders are symmetrically connected to the center of the shell up and down, and the hydraulic cylinders are hinged to the right end of the shell. The movable end of the hydraulic cylinder extends into the positioning table, the left end of the shell is connected with a frame, criss-cross steel wires are connected into the frame, the steel wires are in a grid shape, and rubber blocks are connected into steel wire grids. According to the bending resistance testing device for the cold-formed thin-walled section steel, a frame, steel wires and rubber blocks are arranged to form a blocking protective net cover. The to-be-tested steel is surrounded by the shell, the positioning table and the blocking protective net cover, the steel is isolated from the outside in the testing process, and therefore the protection effect is achieved. And damage to workers caused by steel bar breakage is avoided. And through cooperation of a rubber block and an elastic film, fragments generated by breakage are buffered, and the safety is improved.

The utility model discloses a modularization steel wire grating splicing device for soft foundation strengthening, which comprises a positioning frame and two connecting strips, a cavity is arranged in the positioning frame, the inner wall of the cavity is rotatably connected with a screw rod through a bearing, the top end of the screw rod is fixedly connected with a rotating handle, and the rotating handle is fixedly connected with the positioning frame. The outer surface of the lead screw is in threaded connection with a transmission threaded sleeve plate, the front face of the transmission threaded sleeve plate penetrates through the positioning frame and is fixedly connected with a transmission plate, and the bottom face of the transmission plate is fixedly connected with a pressing plate. According to the device, a rotating handle is rotated to drive a lead screw to rotate, so that a transmission screw sleeve plate, a transmission plate and a pressing plate move, precise positioning and pressing of a steel wire grating body are achieved, two connecting strips can be conveniently and rapidly spliced through buckles and clamping grooves, the splicing efficiency and precision are improved, a positioning pointed rod and an inserting nail are inserted into a soft foundation, and the splicing efficiency and precision are improved. The stability of the positioning frame and the connecting strips on the soft foundation is enhanced, displacement is prevented in the splicing process, and it is ensured that splicing work is smoothly conducted.

The invention discloses a dual-band polarization imaging optical system, which comprises an optical window, a spectroscope, a visible light imaging module and a medium-wave infrared polarization imaging module, and is characterized in that the visible light imaging module comprises a lens group and a visible light sensor, and the medium-wave infrared polarization imaging module comprises a plurality of lens groups, a wire grating polarization optical splitter and two medium-wave infrared sensors; visible light and medium-wave infrared light enter the dual-waveband polarization imaging optical system from the optical window, the visible light is imaged on the visible light sensor after being reflected by a long-wave-pass two-way light splitting film on the surface of the spectroscope, and an image is formed after photoelectric conversion; medium-wave infrared light passes through the long-wave-pass two-way beam splitting film and the beam splitter and then is separated into two kinds of polarized light through the polarization beam splitting system for independent imaging. According to the invention, the problem that the optical axes of visible light and infrared light are difficult to keep consistent in the prior art is solved; and the second problem is that an infrared polarization imaging system is difficult to efficiently integrate with a visible light imaging system.

To reduce partial deterioration of polarization transmission characteristics in a reflection polarization optical element composed of a curved substrate.SOLUTION: The reflective polarizing optical element includes a substrate having a curved surface part in which a surface forms a curved surface, and when viewed in a plan view in an optical axis direction, the curved surface part has a shape surrounded by a plurality of arcs each forming a part of the same circle in the plan view and a line connecting ends of adjacent arcs of the plurality of arcs, and a reflective polarizing film for a polarizing beam splitter having a wire grid structure, in which the shortest diameter among diameters passing through a center point of the circle in the plan view is defined as a short diameter.SELECTED DRAWING: Figure 1

The embodiment of the application discloses a display device, and relates to the technical field of display. The display device comprises a display panel and a peep-proof film. The peep-proof film comprises a plurality of wire grids arranged at intervals. The gaps of the plurality of wire grids form a plurality of slits, and the plurality of slits are filled with a light-transmitting medium. The refractive indexes of the wire grids and the light-transmitting medium are different. According to the technical scheme disclosed in the embodiment of the application, the peep-proof effect can be selectively opened, the transmittance of screen light can be ensured, user visual fatigue can be avoided, and when there is no power supply, the peep-proof film can be used as a polaroid. In addition, the scattering function of the light-transmitting medium can also widen the viewing angle.

The invention relates to an optically variable security element (20) for protecting valuables, the optically variable security element having a relief grid (30) and at least one line grid (40), the relief grid having a plurality of relief elements (36) arranged in a grid shape, the line grid being arranged vertically above or below the relief grid (30) and having a plurality of line elements (42), which extend substantially in the same direction and are modulated in a position-dependent manner, wherein the relief grid (30) and the at least one line grid (40) interact to produce a surface (60) which, for an observer, advances and / or recedes relative to the surface of the security element (20) in the form of a prescribed three-dimensional image pattern by means of the position-dependent modulation of the line elements (42).

A wire grid polarizer includes a substrate layer, a polymer wire grid layer, and a plurality of coating layers. The polymer wire grid layer is disposed on the substrate layer and includes a plurality of wire grid units. The plurality of wire grid units are formed on an upper surface of the substrate layer and extend along a first direction, and each wire grid unit has a top surface and first and second side surfaces on two sides along the first direction. The plurality of coating layers are individually formed on the first side surface of each wire grid unit. The plurality of coating layers are metal or non-metal dielectric materials. The present disclosure further provides a manufacturing method of a wire grid polarizer.

The utility model discloses a novel touch control film which comprises a touch control film body, a wiring area is arranged on the touch control film body, wire grids are distributed in the wiring area, an outgoing line wiring area connected with the wire grids is arranged on one side of the wiring area, a flexible circuit board is arranged on one side of the touch control film body, and fine wires in the outgoing line wiring area are welded to a welding disc of the flexible circuit board. Each fine wire comprises a series of multi-layer bent oblique line sections with a certain inclination angle relative to the vertical direction; according to the utility model, the path length of the lead can be effectively increased by the oblique line segment included in the fine lead, so that the welding firmness and the conductive performance are improved, the mechanical strength of the lead can be enhanced, the fracture risk caused by bending or stretching is reduced, and the overall reliability is improved; the micro wires are arranged in the form of oblique line segments, and the inclination angle is controlled between 20 degrees and 70 degrees, so that denser wiring can be realized in a limited space, and the space utilization rate is optimized.

The present application relates to force sensor technical field, especially to a kind of micro six-dimensional force sensor, redundancy output method and robot dexterous hand, the sensor includes: lower support, with the accommodating cavity being disposed towards one end opening;Elastomer, open end of lower support is connected, including with lower support connection outer ring, from the inner wall of outer ring inwardly extending strain beam and the inner ring being set in outer ring and being connected with the inner end of strain beam;Upper support, the center of upper support has connecting part, connecting part is fixedly connected with inner ring;Wherein, the shape of accommodating cavity is adapted to the shape of inner ring and strain beam, strain beam is also pasted with star-shaped silicon strain gauge, with common node at center, current from common node flows into the star-shaped divergent state in wire grid area around it.The present application is little by the above-mentioned setting to the influence of wire resistance and temperature drift, and redundancy output is provided, so as to reduce error, improve accuracy and reliability.

The application belongs to the technical field of laser illumination, and particularly relates to a laser illumination system for an LCOS display platform. The system comprises, in sequence from an LD light source illumination system to a lens, a first diffusion sheet, a collimation module, a uniform light module, a third mirror, a relay lens module, a metal wire grid, a retardation sheet, an LCOS chip and a polariscope. The collimation module comprises, in sequence, a double-face fly eye, a first collimation lens, a first mirror, a second diffusion sheet, a second mirror and a second collimation lens, which are installed between the diffusion sheet and the uniform light module. The laser illumination system provided by the application sets the collimation module and the uniform light module, and further improves the utilization rate of the laser light source and the display effect by optimizing the optical design and the beam shaping technology, so that the display quality and the user experience can be significantly improved.