122 results about "Light valve" patented technology

The application provides a light valve dimming film and a preparation method and application thereof. The dimming film comprises a suspension and a base polymer, the suspension comprises an acrylic polymer and dimming particles, and the base polymer is selected from an epoxy resin; the mass ratio of the dimming particles, the acrylic polymer and the epoxy resin is (0.1-5):100:200-350. The dimming film uses the epoxy resin as the base polymer, the acrylic polymer in the suspension can be dispersed into the epoxy resin in the form of small droplets with micron-level size, a phase separation state is formed, and the particle sedimentation problem is improved; meanwhile, the two polymers have similar refractive indexes, so that the prepared dimming film has good transparency. In addition, the size of the droplets in the dimming film is more conducive to the flipping of the dimming particles, so that the light transmittance is improved, and the performance of an SPD device is improved.

An apparatus includes at least one laser source and a print bed. A light valve array having at least three optically addressable light valves is positioned to direct differing images at the print bed. Optics to direct multiple beams derived from the at least one laser source can be positioned to direct light toward and from the optically addressable light valves.

The present application relates to a kind of thin ventilation skylight systems for factory, which is installed on the support beam arranged at the top of factory;It is characterized by including waterproof groove, rain baffle, waterproof groove compression frame, support plate, communication rod, light valve plate, buckle unit and valve plate drive module;Using a flat panel to carry out die stamping forming, it can realize modular mass production, and high production efficiency, and no pre-assembly is needed;After completing stamping forming, only bending operation is needed, the forming of product can be realized, and it can be installed directly across the waterproof groove;Buckle unit connection disassembly operation is more convenient, and installation efficiency is improved;Communication rod is connected on each support plate, and the communication rod arranged above and below is used to install rain baffle structure, and staggered arrangement of cloth baffle can guide rainwater into waterproof groove on one hand, and it is also convenient for light to pass through light valve plate for lighting;Valve plate drive module can drive light plate to open and realize ventilation.

The present invention relates to an energy-efficient light valve comprising an LC material which is switchable between an optically transparent state and an opaque state and to the use of the light valve in spatial light modulators for handling occlusion in near-eye displays.

The application discloses an optical engine module and a laser projection device, and belongs to the laser projection field.The optical engine module comprises a light source assembly, a prism assembly, a light valve assembly and a lens assembly, wherein the light valve assembly at least comprises a first light valve and a second light valve, the prism assembly is used for guiding the incident light corresponding to each light valve to the corresponding light valve respectively, and guiding the light beams output by each light valve to the lens assembly, the image light beams output by the first light valve and the image light beams output by the second light valve are dislocated at the irradiation position of the lens assembly, so that the resolution of the image picture projected by the lens assembly can be improved without setting a vibrating mirror, the structural components of the optical engine module are less and the volume of the optical engine module is small, the problem that the components of the optical engine module are more and the volume of the optical engine module is large in the related art can be solved, and the effects of simplifying the structure of the optical engine module and reducing the volume of the optical engine module are achieved.

The invention discloses a laser powder bed sheet pattern distortion real-time correction system and method based on a phase type light valve, and relates to the technical field of metal additive manufacturing. The system comprises a polarization laser, a beam expanding and collimating unit, a reflecting mirror, a phase-type spatial light modulator, a reflecting mirror, a relay optical system, a galvanometer / field lens system, a movable spectroscope, a reference plane mirror and a forming cylinder. A double-loop correction system with a position sensitive detector as an absolute reference and a wavefront sensor as direct feedback is constructed, information of the position sensitive detector and the wavefront sensor is unified in a phase domain through a frequency domain fusion algorithm, and a comprehensive compensation phase diagram capable of completing pattern generation and distortion correction at the same time is generated. And loading to a phase type light valve to carry out high-power laser patterning modulation, and melting metal powder of a powder bed.

The application discloses a preparation method of a black electrically controlled light valve film based on nano SiC particles, and comprises the following steps: taking silica powder, graphite powder and NaCl-KCl with a mass ratio of 1:(2-5):(4-8) as raw materials to prepare rod-like SiC, wherein the molar ratio of NaCl to KCl is 1:(0.5-2); using a dopamine hydrochloride solution to modify the rod-like SiC to prepare black rod-like SiC@ dopamine powder; using oleic acid to modify the rod-like SiC@ dopamine to prepare modified black nano rod-like SiC powder; dispersing the modified black nano rod-like SiC powder in a dispersing agent, adding a stabilizer to prepare a black dispersion liquid; providing silica gel, uniformly mixing the black dispersion liquid with the silica gel to prepare a coating material; coating the coating material on the ITO surface of one ITO-PET conductive film and performing drying treatment to form a coating layer, oppositely arranging the ITO surface of the other ITO-PET conductive film to the coating layer and performing pressing treatment to prepare a black electrically controlled light valve film. The application can be electrically controlled to switch between colorless transparent and black transparent states, and meets the sunshade requirements of a vehicle regulation.

The application discloses a closed-loop control direct-current fiber current sensor, which comprises a grating light valve type fiber direct-current current sensor and a polarization interference type fiber temperature sensor; the polarization interference type fiber temperature sensor and the sensing head of the grating light valve type fiber direct-current current sensor are integrated in the same shell; the temperature at the primary sensing head of the grating light valve type fiber direct-current current sensor is measured through the polarization interference type fiber temperature sensor; error correction is carried out according to the measured temperature information; and the influence of the environmental temperature change on the measurement accuracy of the grating light valve type fiber direct-current current sensor is corrected. Meanwhile, the micro-power light control signal source technology is adopted to realize the closed-loop light feedback control of the grating light valve type fiber direct-current current sensor, the measurement linearity of the grating light valve type fiber direct-current current sensor is improved in the closed-loop demodulation algorithm, and the dynamic measurement range is increased.

The application relates to an illumination display device and an illumination display method. The illumination display device comprises light source modules and light valve modules arranged in sequence along a first direction; the light valve modules are configured to generate a plurality of corresponding light transmission patterns according to a plurality of preset projection images; the light source modules are configured to be partially turned on according to the plurality of preset projection images to generate a plurality of corresponding backlight light sources, the light transmission pattern and the backlight light source generated according to the same preset projection image correspond to each other, the backlight light source propagates along the first direction, and the light transmission pattern is located in the irradiation range of the corresponding backlight light source; the light source modules generate corresponding backlight light sources according to the preset projection image to be formed; the light valve modules generate corresponding light transmission patterns according to the preset projection image to be formed; and the backlight light source passes through the light transmission pattern to form the corresponding preset projection image. The illumination display device can effectively reduce energy consumption and heat generated in the operation process while ensuring the illumination brightness.

The present application provides an image processing method, a recording medium and a projector, which can easily correct uneven brightness. An image processing method of a projector (1) or a portable terminal device (5) which displays an image modulated by a liquid crystal light valve (23), comprising: displaying an image (D1); displaying an adjustment bar (B3) or an adjustment bar (SB3) corresponding to a first brightness at a first position of the image (D1); moving the adjustment bar (B3) or the adjustment bar (SB3) from the first position to a second position along a first axis of the image (D1); and generating an image (D2) as a second image having a range corresponding to the second position of the image (D1) and intersecting the first axis, and having the first brightness.

The detection system of an x-ray or charged particle imaging system utilizes a high bandgap, direct conversion x-ray detection material. The signal of the x-ray / charged particle projection is recorded in a spatial light modulator, for example a liquid crystal (LC) light valve. The light valve is then read out by a polarized light optical microscope and a high speed camera. The camera is used to track the halo in the light valve to resolve its intensity and correlate it to the intensity of the incoming x-ray photons or charged particles. This allows for a spatially resolved imaging with an x-ray and / or charged particle spectrometer.

A lighting system and method controls light to prioritize different elements of a light beam output by a luminaire. An LCD surface acts as a color occlusion filter that provides pixel-level control over the light beam transmitted by the layer. An internal LED light source is projected perpendicular to a concave reflector that can be moved on an axis, thereby scaling to widen or narrow the light that is emitted forward as a light beam. The system also includes certain cooling features.

The embodiment of the invention provides a display device with a controllable light path, display equipment and communication equipment, and relates to the technical field of display, the display device with the controllable light path comprises a light emitting diode array and light valve glass which are arranged in a stacked mode, and the light valve glass comprises a first glass layer, a light valve control layer and a second glass layer which are sequentially arranged in a stacked mode; the light valve control layer comprises a prism structure and a liquid crystal material, the liquid crystal material is of an oval structure, the refractive index corresponding to the long axis of the liquid crystal material is different from the refractive index corresponding to the short axis of the liquid crystal material, and the refractive index corresponding to the long axis of the liquid crystal material is the same as the refractive index of the prism structure. The refractive index relationship between the liquid crystal material and the prism structure is changed by switching the arrangement direction of the liquid crystal molecules, so that the propagation form of light is controlled, and the controllable adjustment of a light path is realized. The method is suitable for different scenes such as conventional display, privacy peep prevention and directional communication, and the applicability and flexibility of the display device under various use requirements are improved.

A display module, a driving method, and a display device are disclosed. The display module includes a display panel, a backlight module, and a light valve regulator. The light valve regulator includes a first regulating electrode, a first viewing angle control layer arranged on a side of the first regulating electrode facing away from the display panel, a second viewing angle control layer arranged on a side of the first viewing angle control layer facing away from the first regulating electrode, a second regulating electrode, and a first polarizer. The second and first regulating electrode are operative to form an electric field for controlling the first and the second liquid crystal layer. The first polarizer is disposed on a side of the second regulating electrode facing away from the second viewing angle control layer. An absorption axis of the first polarizer is identical with that of the upper polarizer.

The present application provides a projector and a light source module. The projector comprises the light source module, a light valve and a projection lens. The light source module is used for providing an illumination beam and comprises a seat, a first color light emitting unit, a second color light emitting unit, a first heat dissipation structure connected to the first color light emitting unit and a second heat dissipation structure connected to the second color light emitting unit. The seat has a first side and a second side. The first color light emitting unit is arranged on the first side. The second color light emitting unit is arranged on the second side. The first heat dissipation structure and the second heat dissipation structure are separated from each other and jointly define a containing space. The light valve is located on a transmission path of the illumination beam and is used for converting the illumination beam into an image beam. The projection lens is located on a transmission path of the image beam and is used for projecting the image beam. The projector and the light source module thereof can utilize the heat dissipation structure to well dissipate heat of the light source module in a limited configuration space.

The invention relates to the technical field of projection, in particular to a projection lens system which comprises projection lenses, a light splitting device and a first lens assembly, the first lens assembly forms a primary image plane and guides the primary image plane to different emergent light paths through the light splitting device, and the projection lenses are arranged on the emergent light paths respectively. According to the invention, multi-screen and multi-azimuth projection display can be realized under the condition that a single light valve is shared, the projection in each direction is relatively independent, the projection in different directions can be conveniently and flexibly adjusted, the structure is compact, and the occupied space is small.

The invention discloses an intelligent liquid crystal light valve dynamic response characteristic detection device. The device comprises a base, a detection clamping assembly arranged on the surface of the base, an adjustment detection assembly arranged on the surface of the base and a data transmission assembly arranged on the surface of the base, the detection clamping assembly comprises a placement block detachably connected to the interior of the base, one end of the placement block is provided with a placement opening, and the interior of the placement opening is detachably connected with a rubber pad. An intelligent liquid crystal light valve body is connected to the surface of the rubber pad in a matched mode, a pressing plate is movably connected to the surface of the intelligent liquid crystal light valve body, the telescopic rod works to drive the pressing plate to move in the containing opening, the pressing plate clamps the intelligent liquid crystal light valve body through a sponge block connected to the bottom in a matched mode, and the overall clamping softness is improved through the sponge block and the rubber pad; damage to the intelligent liquid crystal light valve body is reduced, and the intelligent liquid crystal light valve body is convenient to clamp.

The present application relates to the field of electronic light control material, and provides a light valve, a manufacturing method thereof and a dimming glass assembly. In the light valve, a mixture of blue particles and yellow particles is distributed in liquid droplets of a light control layer suspending medium, the blue particles are selected from polyiodide compound particles, and the yellow particles are selected from PbCrO4 particles; the dark state of the light valve is non-blue, and the bright state is transparent. The light valve based on the mixed light control particles of the polyiodide compound particles and the PbCrO4 particles is simple to prepare, can conveniently and effectively modulate the non-blue dark state primary color and the transparent bright state, is beneficial to meet the demand of people for various colors, and has important significance.

This invention provides a metal mask for silicon-based liquid crystal light valve chips, relating to the field of semiconductor optoelectronic device manufacturing technology. It includes a metal substrate and a pixel aperture array, alignment mark area, stress buffer, and reinforced border disposed on the metal substrate, adaptable to mass production evaporation and photolithography processes for LCoS light valve chips. The metal substrate consists of four layers stacked sequentially from bottom to top: a substrate layer, a molybdenum transition layer, a Mo-Ta-N functional pattern layer, and an Al2O3-SiO2 composite passivation layer. The molybdenum transition layer is deposited on the substrate surface using magnetron sputtering, with a surface roughness Ra < 0.15 nm. The Mo-Ta-N functional pattern layer is deposited on the surface of the molybdenum transition layer using reactive magnetron sputtering. The near-vertical, low-roughness aperture sidewalls of this invention result in shadow-free evaporation, uniform electrodes, and clear edges, improving the light utilization and contrast of the LCoS chip. It also increases the utilization rate of the evaporation material and reduces material loss during mass production.

The application discloses a laser powder bed multi-pattern splicing correction system and method based on an amplitude type light valve, relates to the technical field of metal additive manufacturing, and comprises the following in sequence along an optical path: a laser, a beam expanding and collimating system, a homogenizing system, an amplitude type spatial light modulator and a 4f imaging system; a beam splitter, a main beam deflector, an auxiliary beam deflector and a focusing lens group are sequentially connected along the optical path after the 4f imaging system; a global position reference sensor, a mirror and a coaxial monitoring system; and a control system performs sub-field multi-modal calibration, digital pattern pre-deformation, real-time splicing and closed-loop dynamic compensation. The application constructs the laser powder bed multi-pattern splicing correction system based on the amplitude type light valve, combines the sub-field multi-modal calibration, the digital pattern pre-deformation, the real-time splicing and the closed-loop dynamic compensation, takes into account the static nonlinear distortion and the dynamic error, and improves the precision and stability of the powder bed multi-pattern splicing.

The utility model discloses projection equipment, and belongs to the technical field of photoelectricity. The projection equipment comprises a shell, a projection equipment body, a first radiator and a second radiator. The first radiator is connected with the side, deviating from the light outlet opening of the shell, of the projection equipment body in the first direction, and at least part of the second radiator is located on the side, deviating from the projection equipment body, of the first radiator in the first direction; and the light outlet opening and the plurality of air outlets of the shell are distributed on the two opposite sides of the shell in the first direction, so that the first radiator and the second radiator are closer to the plurality of air outlets of the shell. Therefore, the heat conducted to the first radiator by the light valve and the heat conducted to the second radiator by the laser can be conducted to the outside of the accommodating cavity through the plurality of air outlets to a greater extent, so that the influence of the heat on the projection equipment body can be avoided, the radiating efficiency of the projection equipment is improved, and the service life of the projection equipment is prolonged.

The present disclosure relates to an optically addressable light valve (OALV) which makes use of a non-linear electro-optic crystal. The OALV also has a photoconductor disposed downstream of the non-linear electro-optic crystal, relative to a direction of travel of an optical input beam directed into a first side of the OALV. The OALV is responsive to a DC bias signal to control a magnitude of the input beam passing through the OALV, and responsive to an address beam directed into a second side of the OALV opposite the first side, to produce an output beam using the input beam and the address beam.

The invention discloses a particle detection device, a particle sorting system, a particle pairing system and a detection module, the particle detection device comprises a first detection module used for forming irradiation first detection light and second detection light, and a detection assembly used for receiving excitation light after the detection light irradiates first particles; the valve control module is used for controlling the first flow channel to be opened or closed; the valve control module controls the first flow channel to be in a closed state after the detection assembly receives the exciting light excited by the first detection light so that the first particles can stop in the imaging area, and the detection assembly receives the exciting light excited by the second detection light and conducts imaging after the first flow channel is in the closed state. Compared with a scheme based on microscope static imaging, the embodiment of the invention has the advantages that the flux can be obviously improved, and compared with a scheme of imaging in flow, the embodiment of the invention can ensure the imaging quality, i.e., the embodiment of the invention can consider both the detection flux and the imaging quality.

The utility model relates to an electronic adjustable light reducing mirror and a shading bucket based on an electro liquid crystal light valve, the electronic adjustable light reducing mirror comprises a single-chip microcomputer chip, a modem, an operational amplifier and a light reducing mirror, the single-chip microcomputer chip is electrically connected with the modem, the modem is used for receiving a control command of a camera device, and the operational amplifier is connected with the light reducing mirror. The modem is used for processing the control command into a digital signal; the operational amplifier is electrically connected with the single-chip microcomputer chip and used for receiving a voltage driving signal generated by the single-chip microcomputer chip according to the digital signal, and the value of the voltage driving signal is sine alternating current within the range of 1-6V; the light reducing mirror comprises a liquid crystal light valve body, the liquid crystal light valve body is electrically connected with the operational amplifier, the liquid crystal light valve body comprises a plurality of liquid crystal molecules, and the arrangement mode of the liquid crystal molecules is changed according to the voltage driving signal so as to adjust the light entering amount of the light reducing mirror. According to the electronic adjustable light reducing mirror, precise light reducing control can be achieved, a traditional manual adjusting mode is replaced, the problem of color cast distortion is solved, and the optical performance is optimized.

A projection device includes a light source module, an optical engine module, and a lens module. The optical engine module includes a housing, a heat sink, and a through-type light valve, a light guide, and a light guide cover disposed within the housing. The housing is connected to the lens module and has a first opening. The light guide is located between the through-type light valve and the light source module. An illumination beam provided by the light source module is transmitted within the light guide and then to the through-type light valve. The light guide cover has a body and a heat dissipation vent. The body covers the surrounding surface of the light guide, while the heat dissipation vent exposes a portion of the surrounding surface of the light guide. The heat sink includes a connecting portion and a heat dissipation fin portion. A first end of the connecting portion is disposed in the heat dissipation vent of the light guide cover. A second end of the connecting portion is connected to the heat dissipation fin portion. The heat dissipation fin portion shields the first opening and is located outside the housing. The projection device of the present invention has good heat dissipation performance and image quality.

The invention provides a compact projection display system. The compact projection display system comprises a laser light source, a curved reflector, a wavelength conversion device, a digital display light valve and a lens, the excitation light source emits excitation light, the part of the light is guided to the dichroscope or the small hole and then guided to enter the collecting lens group, the collecting lens group shapes the excitation light into convergent light, the convergent light enters the wavelength conversion device, the wavelength conversion device converts part of the excitation light into excited light, the excited light is guided to the concave face of the curved-surface reflector, and the curved-surface reflector emits the convergent light. The concave surface of the curved reflector shapes the excited light into a light beam with an angle required by the digital display light valve and reflects and guides the light beam to the surface of the digital display light valve, and the digital display light valve determines whether to guide the part of light to the lens device or not according to a signal sent by projection control; compared with the prior art, the projection display system adopts the curved-surface reflector to replace a curved-surface reflective bowl, so that the structure is simpler, the cost is lower, the structure of a light path is optimized, and the energy loss of the whole light path is lower.

Disclosed is a projection device, including a light source module, an optical engine module and a lens module. The optical engine module includes a housing, a heatsink and a transmissive light valve, a light guide component and a light guide cover disposed inside the housing. The illumination beam provided by the light source module is transmitted in the light guide component and to the transmissive light valve. The light guide cover has a body and a heat dissipation opening. The body wraps the surrounding surface of the light guide component, while the heat dissipation opening exposes part of the surrounding surface of the light guide component. The heatsink includes a connecting part and a heatsink fin part. The first end of the connecting part is disposed in the heat dissipation opening of the light guide cover. The second end of the connecting part is connected to the heatsink fin part.

The embodiment of the utility model provides a 3D projection system, and the system comprises 3D projection equipment which comprises a light source module, a single-chip display light valve, and a polarized light processing element. The light source module is used for emitting polarized light to the display light valve; the display light valve is used for displaying a 3D display image, polarized light of an emergent surface of the display light valve has a polarization state in a specified direction, an area image displayed by a first display area of the display light valve is a left eye image, and an area image displayed by a second display area of the display light valve is a right eye image; and the polarized light processing element is arranged behind the emergent surface of the display light valve and is used for carrying out phase delay on at least one of the polarized light emitted by the first display area and the polarized light emitted by the second display area, so that the polarization state of the left eye image is different from that of the right eye image. According to the invention, the problem that the 3D effect in the 3D projection system is easy to cause image crosstalk due to poor alignment precision of left and right eye images is solved.

A tunable and reconfigurable transparent electrode for a light valve includes a semi-insulating material substrate having an electrically insulating dark region and a shallow electrically conductive region. The light valve further has a transparent and conductive contact supported by the semi-insulating material substrate, wherein charged carriers are generated optically in response to incident light passing through the transparent and conductive contact and into the semi-insulating material substrate.

The present application relates to the technical field of liquid light valve, especially to a low-voltage driven liquid light valve and a preparation method thereof. The low-voltage driven liquid light valve comprises a first transparent electrode, a light-adjusting liquid and a second transparent electrode arranged in sequence. The light-adjusting liquid comprises light-adjusting particles, a suspension, a dispersing agent and an organic solvent. The dispersing agent is PVP. The present application further discloses a preparation method of the low-voltage driven liquid light valve, comprising the following steps: preparing light-adjusting particles; preparing a suspension; dissolving PVP in an organic solvent at a certain temperature; mixing the light-adjusting particles with the organic ester solution of PVP, and then mixing with the suspension to obtain the light-adjusting liquid; filling the light-adjusting liquid between the first transparent electrode and the second transparent electrode, and sealing. The liquid light valve prepared by the present application can be driven at low voltage, has fast response speed, short recovery time and good repeatability, and uses PVP which is stable at normal temperature and pressure as the dispersing agent, so the safety is good.