165 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 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 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.

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.

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.

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 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 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 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.

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.

The invention provides a tissue blood oxygen saturation measuring system and method for multispectral Cherenkov imaging, and relates to the technical field of Cherenkov imaging. The system comprises a single-pixel modulation imaging device, and the single-pixel modulation imaging device comprises a digital micromirror device which modulates Cherenkov light according to a plurality of different sampling templates; the circular-to-rectangular optical fiber is used for converting a light spot of the modulated composite light beam of each sampling template into a rectangle; the spectrograph comprises a slit for receiving the composite light beam of the rectangular light spot of each sampling template to form a linear light source of each sampling template; the blazed grating is used for carrying out spectrum separation on the line light source of each sampling template; the linear array photomultiplier is used for carrying out light intensity detection on the light beams subjected to spectrum separation to obtain multi-channel light intensity signals; and the processing unit is used for obtaining the oxyhemoglobin saturation of the to-be-detected tissue based on the light intensity data of each sampling template under the plurality of channels.

Disclosed are systems and techniques for generating and steering laser beams onto atoms for performing locally addressed quantum gate operations. A system may include (i) a high-speed acousto-optic modulator (AOM) for producing a single input beam, (ii) a phase-only spatial light modulator (SLM) for imprinting a phase pattern on the single input beam, the phase pattern being chosen such that after a lens positioned after the SLM, the single input beam is divided into a pattern of secondary beams that correspond to the positions of the atoms or ions in a quantum computer, the lens after the SLM being positioned so the secondary beams are focused to form an image on a digital micromirror device (DMD) amplitude modulator, (iii) a compensation grating after the DMD, in the path of the secondary beams, and (iv) an objective lens after the compensation grating to image the secondary beams onto an atomic array.

The invention discloses a rapid and efficient laser fuze signal high repetition frequency and high speed modulation system based on a DMD, and belongs to the field of laser fuze signal modulation. The modulation system is composed of a coupling optical system, a DMD modulation optical system and an emission optical system. The emission optical system is used for receiving the pulse laser beam output by the DMD modulation optical system, shaping the pulse laser beam and then projecting the pulse laser beam to a target area at a preset angle so as to illuminate a fuse; the divergence angle of the emergent laser beam is adjusted through the focusing mechanism, so that the illumination area is changed; the DMD modulation optical system is used for receiving the coupling optical laser beams output by the coupling optical system and outputting the coupling optical laser beams after spatial intensity modulation on the DMD micromirror array; in an echo receiving mode, laser echoes returned by a target are imaged on the surface of the DMD micromirror array; and the coupling optical system is used for coupling the laser beam output by the optical fiber laser source to a free space and adjusting the size and the divergence angle of the laser beam. The device is used for laser fuze signal modulation.

The invention provides a single-pixel imaging-free moving target positioning method, which comprises the following steps: S1, constructing a Gaussian mixture background model to detect a moving target and a background; s2, irradiating the digital micromirror device through a light source, and projecting the initial template pattern to the surface of a target scene; receiving the light beam reflected by the target to a single-pixel detector; s3, constructing a Kalman filtering prediction model, and predicting the position area of the target in the next frame; s4, dynamically matching the template in the prediction area, calculating SSIM values, positioning a position corresponding to the maximum SSIM value, and marking a target in a rectangular frame, namely a positioning result; and S5, updating the region corresponding to the maximum SSIM value into a new template, iteratively updating the Kalman filtering state, and realizing continuous tracking until the maximum frame number is reached. The method does not need a complex optical system and imaging equipment, reduces the system complexity, does not generate an image, and is suitable for a scene needing privacy protection.

The embodiment of the utility model discloses a control system of a digital micromirror device, the control system comprises a data sending end, a data receiving end and a control end, the data sending end comprises a computer, an SDR base station and a first wireless transceiver, the SDR base station is respectively connected with the computer and the first wireless transceiver; the data receiving end comprises a second wireless transceiver, an SDR module and a DMD control module, the SDR module is respectively connected with the second wireless transceiver and the DMD control module, and the first wireless transceiver is connected with the second wireless transceiver; the control end comprises a digital micro-mirror device, and the digital micro-mirror device is connected with the data receiving end. According to the technical scheme, based on the characteristic that the frequency can be customized through the SDR technology, wireless control data transmission of the digital micromirror equipment is achieved, and flexibility and safety are high.

The present invention belongs to the field of particulate optical sensing, and specifically relates to a particulate light scattering signal acquisition method and device, comprising: controlling scattered light of different scattering angles generated by a particulate matter to be measured to reach a digital micromirror device (DMD); utilizing the on and off states of each micromirror in the DMD to allow scattered light of different scattering angle combinations to reach a photodetector, thereby realizing multiple acquisitions of scattered light signal intensity by the photodetector to obtain a measurement signal vector S; wherein, when a single micromirror is on, the scattered light reaching the micromirror is focused on the photodetector through the micromirror according to a preset optical path; when the single micromirror is off, the scattered light reaching the micromirror is diverged to an area outside the photodetector; for X=(ΦΨ) ‑1 S is minimized by 1 norm to determine X and the sparse domain Ψ; and the scattered light intensity P at different scattering angles generated by the measured particles is obtained by inversion according to P=ΨX. The present invention can improve the collection efficiency of the spatial distribution of scattered light intensity.

The present disclosure provides a projection display device and an optical shielding element thereof. The projection display device includes a light-emitting unit and a digital micromirror device. The light-emitting unit is configured to emit an incident light to the digital micromirror device, and the incident light is reflected by the digital micromirror device to project image. The optical shielding element includes a frame and a coating layer. The frame includes a main body and a hollow portion. The main body includes a notch. The notch is disposed corresponding to the hollow portion and recessed toward a direction away from the hollow portion. The coating layer is disposed on main body. The roughness of the coating layer is less than 500 nanometers, the reflectivity of the coating layer for the incident light is less than 5%, and the transmittance of the coating layer for the incident light is less than 1%.

The invention relates to a nonlinear calibration method and system based on a heuristic optimization algorithm DMD (Digital Micromirror Device), and the method comprises the following steps: for a to-be-optimized DMD light modulation system, taking the micromirror overturning time obtained according to a required display image as a to-be-optimized parameter in advance, loading the to-be-optimized parameter to the DMD, taking a light intensity actual value output by the DMD light modulation system as feedback, and carrying out nonlinear calibration on the to-be-optimized DMD light modulation system; optimizing and calibrating the turning time of the micromirror through a heuristic optimization algorithm; and the DMD light modulation system adopts the optimal micromirror overturning time to carry out gray imaging. Compared with the prior art, the method has the advantages that the turning time of the micromirror is optimized through a heuristic optimization algorithm, and nonlinear high-precision calibration of the DMD gray scale is realized; in simulation and experiments, the method shows the advantages of global optimization and uniform regulation and control, and the linearity of the DMD is improved by 42.2% after calibration.

The application provides a full-automatic optometry topographic chart instrument, comprising an imaging system and a control processing system, the imaging system comprises an imaging assembly, an illumination device and a shooting device, the light exit side of the illumination device is provided with a projection objective, the light exit side of the projection objective is provided with a digital micromirror device or a transmission type calibration plate with a projection pattern, and the projection pattern is used for assisting qualitative and quantitative analysis of the refractive degree of the human eye; the control processing system comprises a data processing module for receiving fundus images and calculating a generated topographic chart and an output display module for displaying the topographic chart. The application also provides an optometry method using the full-automatic optometry topographic chart instrument. The full-automatic optometry topographic chart instrument and the optometry method provided by the application have simple equipment structure, low cost, complete detection parameters, and can obtain the ametropia condition of the human eye through the change of the projection pattern characteristics, and then obtain the optometry topographic chart through image processing.

A portable and cost-effective programmable scanning diffuse speckle contrast imaging (PS-DSCI) technique enables noncontact, fast and high-density imaging of deep tissue blood flow, blood oxygenation, and tissue optical properties. PS-DSCI incorporates a digital micromirror device (DMD) for programmable fast scanning of near-infrared lights (e.g., line shape scanning) at different wavelengths over a large region of interest (ROI). A high-resolution 2D camera captures intensity images at each scanning source position. Novel image processing algorithms are created to define the pixel / detection areas at varied distances from the illumination center for capturing diffused photons from the tissue at varied depths. Spatial laser speckle contrasts are calculated in the defined detector regions and then converted to blood flow images at different depths. Line-shape scanning enables high temporal resolution to detect low-frequency oscillations (<0.1 Hz) across different brain regions, thus allowing for the reconstruction of brain functional connectivity maps.

The application belongs to the technical field of quantum imaging of computational imaging, and specifically discloses a correlation imaging reconstruction algorithm based on a deep convolutional hybrid neural network, which uses a Hadamard matrix gray scale coding sequence to replace a Gaussian matrix speckle sequence of original correlation imaging, and adjusts a digital micromirror device with a fixed sequence of speckle sequences in data acquisition and processing of correlation imaging. Under the same sampling rate, the algorithm can reconstruct a high-quality target object image, and has higher PSNR and SSIM values. Deep learning realizes end-to-end image recovery of an image in the algorithm implementation of correlation imaging, and reduces the steps of image calculation.

Embodiments of the present disclosure relate to mount apparatuses for digital micromirror devices of digital lithography systems and methods of mounting the digital micromirror devices. The mount apparatuses described herein retain spatial light modulators, such as DMDs. The mount apparatus enables the flattening of the DMD by providing a force such that the pair of contact pads contact the DMD. The DMD is positioned in a mounting frame of the mount apparatus. Contact pads of the mounting frame are operable to apply pressure to the DMD.

This invention discloses a DMD-based cross-type optical path beam splitter, comprising an ultraviolet imaging lens, a dichroic mirror, a digital micromirror device (DMD), an ultraviolet filter, an ultraviolet detector, a visible light camera, and a light collector, as well as an optical path shield. The DMD is electrically connected to a DMD controller. This invention also discloses an ultraviolet imaging block detection method, including constructing an imaging device based on the aforementioned beam splitter; the beam splitter splits the incident mixed light; an FPGA control module performs multi-layer segmentation iterative scanning to locate the ultraviolet light region generated by corona discharge and generate an ultraviolet image; the FPGA control module simultaneously acquires visible light video signals; the FPGA control module fuses the visible light video signals and ultraviolet image signals and displays them, completing the corona discharge location positioning. This invention solves the problems of delayed corona discharge detection and early warning, high detection equipment cost, and slow imaging speed in existing technologies.

The invention discloses a space omics chip probe release method and system based on image guidance, and relates to the technical field of space transcriptomics, and the method comprises the steps: obtaining an original image of a tissue slice through the shooting of a camera; wherein the tissue slice is attached to the surface of the probe coding chip; adding a probe incubation reagent into the tissue slice; preprocessing the original image, and positioning to obtain a tissue area in the original image; taking the tissue area as a tissue mask, and converting the tissue mask from camera coordinates to digital micromirror device coordinates; generating a control signal of the digital micromirror device according to the coordinates of the digital micromirror device; and in response to the control signal, projecting light generated by the light source to the tissue area by using the digital micromirror device so as to release the corresponding probe in the tissue area range in the probe coding chip. According to the method, the probe coding chip is irradiated according to the customized irradiation pattern, so that only the probe in the tissue area range is released, and accurate illumination control on the tissue area is realized.

This invention discloses a high-precision line stripe scanning projection device and method, belonging to the field of projection display. The high-precision line stripe scanning projection device includes a single-wavelength light source, a collimating lens, a reflector, a digital micromirror device, a projection lens, and a housing. The digital micromirror device can control the size, position coordinates, number of slits, and slit spacing of the reflective slits. In scanning mode, the reflective slits can be translated in a time-sequential step-by-step manner to achieve scanning of the projected stripes on the projection target. The high-precision line stripe scanning projection method provided by this invention can determine the projection stripe spacing and stripe brightness by controlling the peak width and slit spacing, and determine the projection stripe linewidth by controlling the number of slits, thus improving the accuracy and quality of the line stripes.