163 results about "Light valve" patented technology

The invention relates to the technical field of image projectors, in particular to a multi-dimensional light path self-adaptive adjustment control method and system for an image projector, and the method comprises the steps: obtaining multi-path real-time light path parameters, carrying out aberration noise covariance estimation to generate an aberration matrix, and generating a light path crosstalk matrix through crosstalk analysis; predicting light path change based on the aberration matrix and the crosstalk matrix to construct a multi-dimensional light path simulation model; carrying out light valve duty ratio calculation on the model to obtain a basic driving sequence, and generating an anti-crosstalk driving sequence through dead zone compensation; performing phase quantization and peak shifting distribution on the anti-crosstalk driving sequence to obtain a peak shifting control sequence; and performing temperature and ambient light compensation on the off-peak control sequence, generating a temperature compensation driving sequence, performing multi-light path cooperative processing to obtain a multi-dimensional control sequence, collecting feedback light intensity and aberration data, optimizing a simulation model, and realizing multi-dimensional light path adaptive adjustment. The problems that a traditional manual adjusting method is slow in response and poor in environmental adaptability are solved.

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.

Provided in the present invention is a split-screen projection device. The split-screen projection device comprises: a projection lens module which sequentially comprises, from a first side to a second side, a plurality of lenses having diopters and an imaging light valve; and a light-splitting module located on the first side of the projection lens module and disposed on an optical axis of the projection lens module, wherein the light-splitting module has a plurality of reflecting surfaces, the plurality of reflecting surfaces reflect light in different directions, and the plurality of reflecting surfaces are configured to receive projection light of the projection lens module and reflect the received projection light to different positions to form a plurality of projection images. The present invention solves the problems in the prior art of split-screen projection devices having a complex structure and a poor imaging quality.

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 present invention relates to a laser selective melting (SLM) forming device based on dynamic surface exposure. The device comprises a diode laser array homogenizing light unit, a light-addressable light valve imaging unit, and a light source deflection imaging unit, all arranged sequentially along the laser light path. The diode laser array homogenizing light unit is used to emit multiple groups of laser light and homogenize them into a surface light source. The light-addressable light valve imaging unit is used to separate the surface light source into S-polarized light and P-polarized light. The light source deflection imaging unit is used to dynamically adjust the projection position of the S-polarized light to expand the SLM forming area. This SLM forming device based on dynamic surface exposure aims to address the problem that SLM forming based on surface exposure cannot meet the requirements for forming large parts due to the limited exposure range of the surface light source.

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 application relates to the technical field of virtual reality optical systems, and discloses an optical system control method for reducing VR dynamic blur, which comprises the following steps: arranging an independent liquid crystal light valve in the light path of a display panel, and determining the motion state of the user according to the head motion angular velocity obtained by an inertial measurement unit; when being in a static micro-motion state, the light valve is controlled to be continuously opened; and when being in a dynamic operation state, the light valve is controlled to perform a pulse type switching operation once in each display cycle; the application separates the image generation and the time domain light flux control function in structure, so that the display panel can be focused on efficient imaging, and the dynamic blur can be accurately inhibited by the external light valve; the design effectively avoids the inherent contradiction between power consumption and brightness in the prior art, and can significantly improve the environmental adaptability and the comprehensive experience of the user through closed loop self-calibration and multi-sensory collaborative control.

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 invention provides a projection device and a projection system. The projection device comprises a shell; the light path unit is arranged on the shell, the light path unit comprises a light source, a light valve and a lens, and a light beam generated by the light source is modulated by the light valve and then is emitted by the lens; the heat dissipation unit is arranged on the shell, the heat dissipation unit comprises a blocking piece and a heat dissipation piece, the blocking piece is arranged between the light valve and the lens to shield part of light, the heat dissipation piece comprises a connecting part and a heat dissipation part, the connecting part is provided with a first abutting face, the blocking piece is provided with a second abutting face, and the first abutting face and the second abutting face are attached to each other; and the heat dissipation part faces an air outlet of a heat dissipation fan in the projection device. According to the invention, the safety coefficient after the metal is plasticized is effectively ensured.

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 disclosure provides a new field sequential single LCD projector, includes an LED light source, a collecting and collimating device, a light-combining and color-filtering device, an intermediate reflector, a focusing device, a light-homogenizing device, an outgoing lens, a LCD light valve, a field lens, an imaging reflector and a projection lens which are arranged in sequence according to the light traveling direction. The LED light source includes a red light source, a green light source and a blue light source. Compared with the existing full-color light valve technology, under the same technical condition, the efficiency of the light valve is greatly improved, the power of the light source is greatly reduced, and the image color gamut is greatly improved, so that the projector can output higher brightness and has vast market adaptability.

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.