209 results about "Digital micromirror device" patented technology

The invention relates to the technical field of preparation of medical supplies, in particular to a surgical membrane and a preparation process. During specific use, firstly, a polyurethane base membrane is selected and subjected to plasma treatment; spraying a nano SiO2 dispersion liquid containing a photoinitiator on the surface of the treated polyurethane base film, and then performing ultraviolet patterning irradiation to form a micro-bulge structure to obtain a base material layer; projecting the colloidal fluid to a temperature gradient mask through a digital micromirror device, so that the colloidal fluid is subjected to regional thermal polymerization on the substrate layer to form an intelligent adhesive layer with viscosity gradient; by adopting an aerosol jet printing technology, super absorbent fibers and polyvinyl alcohol-borax dynamic crosslinking hydrogel are co-deposited to form a drainage layer, so that the technical problems that a surgical membrane prepared by a surgical membrane preparation mode in the prior art is inflexible in adhesion and poor in surface structure performance, and a preparation process is difficult to accurately control are solved.

The invention discloses a screen control integrated clearance lamp integrated industrial vehicle intelligent safety early warning system and method, and relates to the field of industrial vehicle safety early warning. The three-dimensional dynamic light field outline marker module adopts a metamaterial and a DMD (Digital Micromirror Device) to construct a dynamic light field and generate a virtual-real fusion guide line; the multi-modal perception fusion module integrates a radar and a camera, and constructs a space-time association graph model; the edge calculation decision module constructs a neuromorphic calculation unit, and adopts SNN to process time sequence data; the screen control integrated interaction module develops a light field tactile feedback display screen and generates a three-dimensional interaction interface through holographic projection; the holographic sound field positioning module deploys a metamaterial and designs a sound wave phase conjugate mirror; and the vehicle-road cooperative communication module adopts an OAM multiplexing technology to realize a 5G-V2X communication distributed edge cache network. The visual distance is optimized in rainy and foggy weather, the night detection effect is guaranteed, power consumption and response delay are controlled, operation errors are reduced, spectrum efficiency is optimized, and operation safety and economical efficiency of industrial vehicles are enhanced.

The invention relates to the technical field of fluid mechanics, in particular to a method for extracting cavitation water jet unsteady flow field characteristics, which comprises the following steps: S1, performing three-dimensional modeling on a nozzle for cavitation water jet calculation and a fluid domain thereof to generate a three-dimensional model; s2, performing grid division on the three-dimensional model, and importing Fluent for numerical simulation to obtain flow field simulation data; s3, importing the flow field time sequence data into Tecplot, and exporting the grid node data into a flow field snapshot sequence in batches; s4, through a Python program, extracting flow field data to form a matrix; s5, POD decomposition is carried out in the compiled Python program; s6, carrying out DMD (Digital Micromirror Device) decomposition in the compiled Python program; s7, the modal data obtained after POD and DMD decomposition are subjected to topological distribution to the grids to generate the spatial modal diagrams. According to the method, the analysis flexibility is improved, and the method is suitable for various scenes.

The invention discloses a semiconductor etching end point detection method and a multi-channel detection system, and the detection method comprises the following steps: outputting detection light; expanding the detection light into a continuous spectrum band; imaging the continuous spectral band to a modulation surface of a digital micromirror device, and establishing a pixel group corresponding to each narrow-band wavelength of the continuous spectral band; performing spatial sampling on the continuous spectrum band, and distributing and writing a unique radio frequency modulation frequency f for each pixel group; respectively executing vibration type switch modulation on each pixel group at a radio frequency modulation frequency f so as to convert wavelength information of a continuous spectrum band into a time domain frequency optical signal; converting the time domain frequency optical signal into a time domain electric signal; performing frequency domain analysis on the time domain electric signal, and demodulating gas absorption light intensity corresponding to each modulation frequency; and judging the etching end point of the semiconductor according to the change trend of the gas absorption light intensity. According to the invention, parallel detection of a plurality of spectrum channels can be realized through a single detector so as to judge an etching end point.

The invention concerns an image projection device (15) comprising: a light source (24), preferably comprising a light-emitting diode, and an optical engine (35) including a digital micromirror device (36), the optical engine (35) being located downstream of the light source (24) and containing data information corresponding to a main image (30), so as to project said main image along a predetermined light path. The main image is formed by the reunion of a first image and a second image, different from the first image, that are adjoined to each other. The light projection device (15) further comprises an optical device (40) arranged on the light path of the main image (20) such that it receives the first image and the second image, and is configured to project said first image in a first direction and to project said second image in a second direction, different from the first direction.

The invention relates to a structured light illumination confocal super-resolution measurement system and method, and relates to the technical field of optical measurement. The system comprises a digital micromirror device (DMD), a sample platform, an electric displacement platform, a microscopic imaging assembly, a complementary metal oxide semiconductor (CMOS) imaging assembly and computer equipment, and the DMD is used for adjusting the point light source array and the structured light field. According to the DMD-based confocal super-resolution measurement method, a structured light field and a signal-noise separation technology are combined, and high-precision and high-resolution three-dimensional surface reconstruction can be realized. By using the flexibility of the DMD and the advantages of the super-resolution technology, the spatial resolution and speed of confocal imaging are effectively improved, so that the measurement process is more accurate. In addition, low-rank decomposition and self-supervised deep learning methods are fused, the image reconstruction process is optimized, noise interference is suppressed, and the overall performance of the system is further improved.

The invention discloses a differential compression structured light illumination super-resolution imaging device based on time sequence multiplexing. The differential compression structured light illumination super-resolution imaging device is composed of a light source and beam expanding system, a structured light illumination imaging system, a coding aperture time domain compression imaging system, a time sequence control system and a data processing reconstruction system. According to the invention, the two digital micromirror devices are controlled through a time sequence, and wide-field and structured light compression imaging is realized respectively. In the wide-field mode, the two digital micromirror devices are switched to the total transmission mode, and fluorescence signals of the excitation sample are directly collected by the camera; in a structured light mode, the first digital micro-mirror device generates six time-varying stripe coding patterns, and dynamic space coding of the second digital micro-mirror device is combined, so that a camera obtains a compressed image through single exposure. Through differential processing of a wide field and a compressed image, background noise is suppressed, high-frequency information weight is enhanced, the bottleneck of high-frequency signal offset in traditional compressed imaging is broken through, image reconstruction quality is remarkably improved, and high-fidelity imaging of a high-speed dynamic scene is realized.

The utility model discloses an echelle grating spectrometer based on a digital micromirror device, which belongs to the technical field of spectrometers and comprises an echelle grating spectrometer, a digital micromirror, a reflection focusing mirror, a photomultiplier, a data acquisition card and an upper computer. The light is spatially modulated through a digital micromirror, the light is focused on a photomultiplier, and information is received by a data acquisition card; time sequence synchronization of the digital micromirror and the data acquisition card is completed by transmitting a synchronizing signal of the digital micromirror to the data acquisition card, and meanwhile, an overturning mode of the digital micromirror is designed, so that rapid scanning imaging is realized. According to the echelle grating spectrometer based on the digital micromirror device, the cost is reduced, and the time for acquiring spectral information is shortened.

A three-dimensional (3D) compressive sensing based eye tracking system using single photon avalanche diode (SPAD) sensors achieves high resolution depth measurement by using low resolution SPAD sensors and active encoded illumination such as two- or three-dimensional fringe patterns, random speckles, random patterns, and / or superimposed patterns projected onto a surface of an eye. The patterns may be projected by high speed illuminators such as a digital micromirror device (DMD) or micro-electromechanical system (MEMS) projector in series changing at the same rate as the SPAD sensor capture rate. A processor may employ compressive sensing techniques to obtain a high resolution image and depth information from the captured images of varying patterns.

Systems and method described herein are directed a digital micromirror device high resolution lamp system. The system can include an optical module. The optical module can be configured to dispose inside a headlamp. The optical module can include an array of micromirrors. The system can include one or more processors coupled with memory. The one or more processors can be configured to provide a beam of light. The beam of light can include an origin. The one or more processors can be configured to control a zone within the beam of light, using the array of micromirrors. The zone can be configured to project a graphic within the beam of light. The zone can include at least a 400:1 contrast ratio within at least a 20 degree by 10-degree field of view from the origin.

Selective bonding integrates semiconductor devices onto a receiver substrate. A laser releases devices from a substrate according to a pattern. The pattern syncs laser frequency and speed / location of the stage with the receiver substrate, or uses a diffractive optical element and pottering, or masks the emitted laser to a desired size / shape. Laser steering employs digital micromirror devices or fast scanning mirrors followed by an f-theta lens. Sequential selective bonding and laser processing enables full-colour display by transferring violet or blue micro-LEDs and employing colour-conversion layers or sequentially patterning red, green, and blue sub-pixels. The same method transfers driving circuits onto a substrate. A pattern from defective devices is generated after test and used for repair. A second round prints micro-devices onto pads in or beside defective devices. Sidewalls coated with a reflective layer stops crosstalk between pixels, improves light-extraction efficiency, improves emission angle, and provides a uniform light pattern.

The invention discloses a spectral confocal efficient three-dimensional measurement device and method based on a spatial light modulator. The device comprises an illumination module and a detection module. The illumination module comprises a white light LED light source, a collimator, an LED condenser, a digital micromirror device DMD and a dispersion objective lens; the detection module comprises an imaging objective lens, a CCD detector and computer processing equipment. According to the invention, traditional point-by-point spectrum confocal measurement is expanded to area array type measurement, so that the measurement speed can be effectively improved; meanwhile, different from a scanning type or fixed pinhole type parallel measurement scheme, the invention uses a pinhole array with controllable diameter and spacing, thereby improving the flexibility and lateral resolution of measurement.

A three-dimensional (3D) compressive sensing based eye movement tracking system using a single photon avalanche diode (SPAD) sensor achieves high resolution depth measurements by using a low resolution SPAD sensor and actively coded illumination (e.g., two or three dimensional fringe patterns, random spots, random patterns, and / or overlay patterns) projected onto the surface of the eye. These patterns may be projected by a high speed illuminator, such as a digital micromirror device (DMD) or a micro-electro-mechanical system (MEMS) projector, varying continuously at the same rate as the SPAD sensor acquisition rate. The processor may employ compressed sensing techniques to obtain high resolution images and depth information from the acquired images of the varying patterns.

The invention aims to provide a perovskite laminated solar cell detection device and a detection method, which are suitable for performance characterization and quality control of a perovskite laminated solar cell. The invention aims to solve the problem that the series resistance distribution of the perovskite laminated solar cell cannot be rapidly and accurately detected under the condition of no metallization or no electrical contact in the prior art. Through photoluminescence and electroluminescent imaging technologies, in combination with a non-uniform illumination mode generated by digital micromirror equipment, accurate identification of a high series resistance region of the perovskite solar cell is realized, so that reliable data support is provided for process optimization and defect detection, and the detection efficiency and safety are remarkably improved.

The invention provides an all-optical neural network system and an optical information processing method. The system comprises a pulse laser light source used for emitting a pulse laser beam; the digital micro-mirror device is used for loading the input image information and coding the input image information to the laser beam irradiated on the surface of the digital micro-mirror device; the phase modulation device is used for carrying out phase modulation on the laser beam which is emitted from the surface of the digital micromirror device and carries the input image information so as to form an optical signal with preset light intensity distribution on an output plane; the optical fiber delay line array device comprises an optical fiber delay line array and a beam combiner and is used for applying different time delays to the optical signals with preset light intensity distribution and combining and outputting the optical signals; the single-pixel high-speed detector is used for receiving the optical signal output from the optical fiber delay line array device and converting the optical signal into an electric signal at a high speed; and the signal acquisition and processing module is used for acquiring the electric signal to obtain one-dimensional pulse time domain waveform signal data so as to obtain input image information.

An output control device of a laser direct writing image comprises a digital micromirror device and a carrying plate, a driving plate is connected with a host and the carrying plate, the host outputs data through a first output port, the driving plate comprises a first input port, a data processor, a display controller, a storage assembly and a second output port, and the first input port is connected with the data processor. The first input port communicates with the first output port, the first input port is connected with the data processor, the data processor is connected with the storage component and the display controller, and the display controller is connected with the second output port; the data processor comprises a first interface unit, a data processing unit and a second interface unit, the input interface of the display controller adopts a high-speed serial interface, and the second output port and the second input port adopt high-speed serial interfaces. The image control data is transmitted at a high speed, so that the transmission rate is greatly improved, and the transmission of ultra-high-rate image data signals is realized.

The present application reveals a light projection device, in which part of beam is projected from a light source module to a digital micromirror device. A light expansion module above the digital micromirror device receives part of the beam reflected from the digital micromirror device for projection. A light projection range of the light projection device is larger than a light projection range of the digital micromirror device. When part of the beam is projected from the light source module to both sides of the digital micromirror device, part of the beam is projected to the light expansion modules disposed on both sides of the digital micromirror device for reflection, and hence making light be used effectively and providing a lighting device with a wide angle of lighting.

Lamp (10) with: a light source (100) designed to emit a first light; and a beam splitter (200) exposed to the first light beam and configured to transmit part of the first light beam to form a transmitted light beam and to reflect another part of the first light to form a reflected light beam, wherein the luminaire (10) produces an output beam pattern that includes the transmitted light beam and the reflected light beam, and a reflector (300) configured to further reflect the first light beam reflected by the beam splitter (200) to form a second reflected light beam, wherein the output beam pattern includes the second reflected light beam, characterized by a digital micromirror device (DMD, 400) configured to further reflect the second reflected light beam to form a third reflected light beam, wherein the output beam pattern includes the third reflected light beam, and a common circuit board (PCB, 800) on which the light source (100) and the digital micromirror device (400) are mounted.

The present invention discloses a three-dimensional correlation imaging method for underwater targets based on vortex light spatial filtering, comprising: (1) emitting pulsed laser, which is irradiated onto the underwater target after passing through a beam expander and a transmitting mirror group; (2) performing speckle encoding modulation on the light intensity distribution of the emitted or received light through a digital micromirror device (DMD); (3) filtering the light modulated by the DMD through a spiral phase plate and a mask plate with a transparent ring to achieve the filtering of scattered light and background light; (4) using a photomultiplier tube to obtain the filtered light intensity fluctuation changes and performing synchronous sampling to obtain the echo light intensities of targets at different distances; (5) performing reconstruction calculation according to the echo light intensities of targets at different distances and the speckle encoding modulation mode of the DMD to obtain the target images of different distance slices, namely three-dimensional imaging. By using the present invention, the interference of water body scattering and background light can be effectively filtered, and high signal-to-noise ratio and high-resolution three-dimensional imaging of underwater targets can be achieved.

The present invention presents improved systems and methods for performing multi-photon lithography. A line-scanning temporally focused two-photon lithography (LS-TFTPL) technique is capable of patterning three-dimensional structures with high throughput. An example LS-TFTPL system may include a pulsed laser, first optical components for expanding light pulses into an elongated or line cross section, a digital micromirror device for modulating the light pulses with a linear pattern and dispersing spectral components of the modulated light pulses, and second optical components for focusing the dispersed spectral components of the modulated light pulse at a line in or on a target material. The focused spectral components may alter the target material within selected voxels along the line, where the selected voxels spatially correspond to the linear pattern.

The application discloses a kind of diffractive light neural network computing systems and methods for realizing pure optical nonlinearity, belong to photonic computing and artificial intelligence hardware technical field.Its system includes coherent light source, linear light computing unit, nonlinear light activation unit and optical detection unit arranged in order along optical path, wherein linear light computing unit is programmable phase modulation using spatial light modulator, nonlinear light activation unit is programmable binary amplitude modulation using digital micromirror device, and both are directly coupled to form pure optical computing path without photoelectric conversion on optical path.Its method trains neural network through customized loss function, drives nonlinear activation function output to binary convergence, and maps the parameters obtained by training into phase map and binary mask respectively and loads to hardware.The application realizes true all-optical nonlinear computation, with the advantages of high energy efficiency, extremely low delay, compact structure and strong parallel processing capability.

The present subject matter provides a high-speed nanopatterning method and apparatus of two-color super-resolution photolithography. According to the present subject matter, a high-speed nanopatterning apparatus of two-color super-resolution photolithography comprises: a first light source for outputting photochemical reaction initiation light of a first wavelength causing a photochemical reaction to occur in an illuminated area of a photoresist; a first lens for enlarging a beam size of the photochemical reaction initiation light; a second light source for outputting inhibition light of a second wavelength suppressing the photochemical reaction in the illuminated area of the photoresist; a second lens for enlarging a beam size of the inhibition light; and a digital micromirror device including a plurality of micromirrors controlled at a first angle and a second angle and for reflecting a portion of the photochemical reaction initiation light output from the first light source or the inhibition light output from the second light source toward the photoresist through the plurality of micromirrors.

The invention discloses a bending endoscopic imaging method and system based on a few-mode optical fiber, and belongs to the technical field of optical fiber imaging. According to the method, an MNIST handwritten digital image is loaded through a digital micromirror device (DMD), a speckle pattern is generated through few-mode optical fiber transmission, image restoration in a bending state is achieved through a deep learning model, and reconstruction effects under different bending degrees are quantized through a Dice coefficient. The system comprises a light beam collimation module, a pattern loading module, an image transmission module and an image acquisition-processing module. The image transmission module adopts a step refractive index few-mode optical fiber, and mode coupling caused by bending is inhibited by increasing the effective refractive index difference between modes; and the image acquisition-processing module is combined with a shallow U-shaped convolutional neural network to reconstruct a speckle pattern acquired by the CCD camera. While miniaturization of the probe is ensured, the imaging quality in a bending environment is remarkably improved, and the probe is suitable for miniaturized high-resolution imaging scenes such as medical endoscopes and the like.

This invention relates to an optical Ising calculation method and system based on dual digital micromirror devices (DMDs). First, the combinatorial optimization problem is mapped to an Ising model. Multiple mask vectors are constructed, and each mask vector is decomposed into multiple binary bit planes. A spin configuration matrix is ​​constructed and loaded into DMD-A. For each mask vector, its binary bit planes are sequentially loaded into DMD-B. The light intensity modulated by the two DMDs is collected and processed. The optical inner product is obtained by combining the bit-weighted components, and then the energy contribution value of the mask vector is calculated. The total Hamiltonian is obtained by summing all contributions. The energy difference is calculated by randomly flipping the spins and repeating the above steps. The probability of accepting the current flip is calculated based on the energy difference. This process is iterated until the maximum number of iterations is reached to obtain the final solution. The system is used to implement the above method. Compared with the prior art, this invention can achieve a high-speed, stable, and coherently independent optical Ising solution method.

Variable-angle ellipsometry is performed using a high speed polarization state modulator, a photodetector, and a digital micromirror device or spinning disk to encode the angle of incidence of light with a high sampling rate in a time domain or frequency domain. A variable-angle ellipsometer uses a high speed, axially stationary polarization state modulator, such as a photoelastic modulator, and a high speed detector, such as a photodiode, for high speed data acquisition. To acquire data at a plurality of incident angles, a lens is used to generate a large incident angle distribution along an optical axis that is at an oblique angle of incidence and discrete or combinations of incident angles of light are selected in a sequence in the time domain or modulated over a plurality of incident angles in the frequency domain.

This application applies to the field of automotive lighting technology and specifically provides a lighting control system comprising a light source assembly, a dimming assembly, a sensor, and a central processing unit. The light source assembly is used to emit a light beam. The dimming assembly is located along the light beam's propagation path and is used to adjust the light beam and reflect it to a digital micromirror device, which processes the light beam and then emits it. The sensor is used to detect the parameters of the light beam. The central processing unit is electrically connected to the sensor, receives signals from the sensor, and adjusts the light beam parameters based on the received signals. This invention aims to solve the technical problems of existing automotive lighting technologies, such as large space occupation, poor integration, and poor control.

The present invention discloses a device and method for measuring the side profile of a conical workpiece, and belongs to the field of photoelectric testing. The device for measuring the side profile of a conical workpiece includes a cylindrical light source, a collimating lens, a reflector, a digital micromirror device, and a surface array CCD. The micromirror element array of the digital micromirror device is controlled to present a horizontal reflection slit; the surface array CCD receives parallel light that is not blocked by the side of the conical workpiece and records data. Compared with the prior art, the device for measuring the side profile of a conical workpiece provided by the present invention is not limited by the minimum change in the rotation angle of the reflector, and the displacement scanning is linear, and the scanning accuracy is effectively improved.

The application discloses a kind of three-dimensional topography measuring device and method based on digital micromirror device's dual camera, and it belongs to the field of stereo vision imaging.The three-dimensional topography measuring device based on digital micromirror device's dual camera includes parallel light source, first digital micromirror device, projection system, objective, second digital micromirror device, first relay lens, second relay lens, first CCD camera and second CCD camera.The three-dimensional topography measuring method based on digital micromirror device's dual camera includes image acquisition and phase calculation, through time sequence difference and dual camera difference, the topography measurement of measured target is realized, and common-mode noise is eliminated, and measurement precision is improved.

The present invention discloses a ranging system based on vector optical fields, which includes a diagonal linearly polarized light generator with collimation and beam expansion functions, a generating system for arbitrary structured vector beams, a vector quality factor measurement system, and a CCD receiving device. A Digital Micromirror Devices (DMD) is provided in the vector beam generating system. By using digital control technology, a circular Airy vortex vector beam with a vector quality factor (VQF) varying regularly with distance can be generated. Through the acquisition of the VQF parameters by the vector quality factor measurement system, the detection of the longitudinal transmission distance is realized, so that it can be applied to industries that require distance monitoring. It has the characteristics of low cost of the detection device, easy integration, flexible regulation, and wide application range.

Exemplary systems, method and compute-accessible medium can be provided, e.g., for a visual stimulation or an optogenetic activation during a scan of at an object. For example, it is possible to utilize a controller which can be configured to receive signal information regarding the scan, and to precisely control a light engine. The exemplary control of the light engine can be used to activate and deactivate a light source or a plurality of light sources (e.g., one or more at least one light emitting diodes). using the signal information. For example, a digital micromirror device can be utilized through which the light engine is precisely controlled for a full field projection, or patterned projection, wherein the light engine can comprise up to eight high power light sources.