263 results about "Digital micro mirror device" patented technology

A digital micro-mirror device (DMD) format conversion system for outputting a stereoscopic encoded optical signal using a DMD and a color wheel is provided. The DMD format conversion system includes a 3D data formatter for receiving an input signal and a DMD data formatter for receiving an output signal having stereoscopic image information and control information from the 3D data formatter and for outputting a DMD output signal having stereoscopic image information and control information. A color wheel control signal and output digital micro-mirror device data are synchronized based on an output frame rate generated by the 3D data formatter independent of the original input frame rate.

According to one embodiment of the present invention, a digital micro-mirror device having improved contrast and a method for the same are provided. The digital micro-mirror device includes a plurality of current-carrying conductors on an upper surface of a substrate, each current-carrying conductor having an upper surface; a low-reflectivity metal disposed upon the upper surfaces of the current-carrying conductors; first and second micro-mirrors forming an aperture above the substrate; and wherein the low-reflectivity metal disposed upon on the upper surfaces of the current-carrying conductors reduces reflection of light received through the aperture by the current-carrying conductors.

The invention provides a time-resolved single-photon counting two-dimensional imaging system and a time-resolved single-photon counting two-dimensional imaging method and belongs to the technical field of extremely-weak light detection. A trigger 2 is triggered to start sampling, centralized sampling is performed at t time intervals, and measurement and counting are performed if light comes at the intervals, so that time resolving of an extremely-weak light object is realized, and a time sequence image is generated. Imaging is performed on the basis of a compressive sensing (CS) theory, a digital micro-mirror device (DMD5) performs linear random projection on a compressible two-dimensional image, the compressible two-dimensional image is optically modulated and then synchronously detected by using a single-photon counter, and a high-resolution extremely-weak light image can be reconstructed by a small amount of sampling operation. The measurement process is linear and non-adaptive, the reconstruction process is non-linear, and the invention has the advantages of high generality, robustness, expandability, superposition and computation asymmetry, and can be widely applied to the fields of life science, medical imaging, data acquisition, communication, astronomy, military affairs, hyper-spectral imaging and quantum measurement.

A digital micro mirror device (and a single-panel color projector using a digital micro mirror device) includes a reflection surface including an array of micro mirrors. The reflection surface is divided into two or more areas, and the axis direction about which a mirror of the array of micro mirrors rotates in one area is the same for all of the micro mirrors in the area. The single-panel color projector includes a white light source, a color separator for separating a white light from the white light source into two or more light beams, the digital micro mirror device reflecting the two or more light beams, an illumination light establishing unit for illuminating the two or more light beams from the color separator, and a projection unit for collecting and projecting light reflected from the digital micro mirror device.

A video projector (1) comprises a light source (11) enclosed in a lamp box (12), an optical engine (100) including a color wheel (13), an optical tunnel (15), a mirror (16) and a DMD (Digital Micro-mirror Device) (17), and a blower fan (30a) disposed in the vicinity of the light source (11) and below the optical engine (100). The blower fan (30b) sucks air through a portion of the optical engine (100) where the optical tunnel (159 and so an are provided except the color wheel (13), generates a cooling air and exhausts a part of the cooling air toward the color wheel (13) and the rest of the cooling air toward the light source (11), so that the elements of the optical engine (100) and the light source (11) are cooled by the blower fan (30b) simultaneously.

Laser light pulsed to illuminate and reflect from at least one object is received at a digital micro-mirror device including an array of mirrors each of which may be selectively controlled to be oriented to either reflect incident light onto a detector or not. The detector outputs a signal representative of an amount of light sensed. By applying M spatial patterns to the mirrors, each in synchronization with one pulse from the laser, and storing sampled signal values from the detector output at each of K times following a pulse from the laser, the collected information may be used to reconstruct K images each using all M spatial patterns and stored sampled signal values corresponding to a respective one of the K times. Each of the K images corresponds to a different range to the digital micro-mirror device, such that the system may be employed as a range finder.

A digital micro-mirror assembly for an optical projection system includes a DMD module with a control board. The control board is provided with a first fixing member, and a DMD is mounted on one side of the control board. A DMD holder resiliently supports a perimeter of the DMD, and an optical holder is provided with a second fixing member to support the DMD module. A fastening member is engaged with the first and the second fixing members to integrally connect the DMD module and the optical holder.

The invention discloses a handheld near infrared spectrum detection system and a detection method for the quality of fruits and vegetables, and belongs to the field of quick detection technologies for the quality of foods or agricultural products. The handheld near infrared spectrum detection system and the detection method have the advantages that modulation light paths of a digital micro-mirror device is matched with a single-point detector and other external modules, so that the handheld, low-cost and miniaturized near infrared spectrum detection system for the quality of the fruits and vegetables can be obtained, and high-performance spectrum information can be acquired without expensive linear array detectors; characteristic wave bands are selected at first in the aspect of building fruit and vegetable quality detection models, then wave bands which do not contain information variables and are low in relevancy are removed, then a small quantity of characteristic wavelengths are selected by the id of characteristic wavelength selection processes, internal collinear relations among spectrum data are eliminated, accordingly, model calculation can be reduced, the models can be simplified, and the quality of the models can be improved; the bottleneck problems of high nondestructive detection cost for the quality of fruits and vegetables, carrying inconvenience and poor quality of existing detection models can be solved by the aid of the handheld near infrared spectrum detection system and the detection method.

A light emitting diode matrix array is used as the light source of a picture projection system. Each cell of the LED matrix array has an assembly of one or more red, green and blue LEDs with metal lead structures to individually energize these LEDs. The lights emitted from the LED assembly is transmitted through one or more programmable liquid crystal plate or digital micro-mirror device to control the light transmission, and then merged together for projection as a pixel onto a screen.

A system and method for exposing different parts of a single field of view for various and differing lengths of time while capturing an image is provided. For astrophotography, unwanted light pollution or over-saturation bleeding from nearby or obtrusive stars may be greatly reduced or eliminated while still capturing the image of the nearby brighter star in the same field of view. Also, a system and method for real-time contrast control while capturing an image to optimize signal-to-noise ratio for various parts of the captured image, is provided. An embodiment of the present invention provides such techniques by using spatial light modulator devices, such as a digital micro-mirror device, to controllably mask different portions of light from an image that expose film or a charge-coupled device. A system and method for a way to use a spatial light modulator device as an active and controllable mask for photolithography, is provided.

An intelligent head lamp assembly for a vehicle may include a light source to irradiate light, a reflector reflecting the light irradiated from the light source, a beam pattern variable unit having at least a digital micro-mirror device (DMD) that selectively change direction of the light reflected by the reflector to a predetermined angle, and a projection lens optical system irradiating the light selectively reflected by the beam pattern variable unit onto a road surface.

A high-resolution image is generated using multiple spatially offset lower-resolution digital micro-mirror device (DMD) panels. Multiple lower-resolution subframe signals for controlling the spatial light modulators are generated from a high-resolution image signal using a resolution reduction and interpolation algorithm. The spatial light modulators under control of the subframe signals are illuminated by a light source and light beams reflected from the spatial light modulators are combined and directed onto a screen for display.

The invention provides a synchronous pulse exposure method for maskless lithography equipment. The maskless lithography equipment adopts an exposure imaging system consisting of a UV (ultraviolet) laser or UV LED light source, a DMD (digital micro-mirror device) and an optical lens; the synchronous pulse exposure method is characterized in that a series of pulse synchronization signals are generated, the DMD and the UV laser or UV LED light source are triggered to synchronously work, and the pulse interval of the pulse synchronization signals depends on the replacement or refreshing cycle of the DMD to graphs; a digital laser direct-writing system comprises an upper computer in charge of outputting digital lattice patterns and the series of pulse synchronization signals to the exposure imaging systems, and one or more exposure imaging systems arranged side by side. According to the method, a synchronous control problem of parts of the lithography equipment is solved, more effective and reasonable exposure and refreshing time is convenient to design, and the shortcomings of low production capacity and poor system adaptability of a conventional exposure machine are overcome.

The invention discloses a Hadamard-transform near-infrared spectrograph added with a light harvesting structure, and relates to the field of Hadamard-transform near-infrared spectrographs. The spectrograph comprises a light source, the light harvesting structure consisting of a collimation lens and a cylindrical lens, a slit, a collimation lens, a plane grating, a DMD (digital micro mirror device), an imaging lens, a single-point detector, a static drive circuit and a spectral information acquisition and processing system. According to the Hadamard-transform near-infrared spectrograph, the light harvesting structure is added between an optical fiber and the slit, so that the energy utilization ratio of the system for light to be detected is improved greatly, and the detection for near-infrared spectrum is facilitated; appropriate slit width, grating incident angle and the like are selected, then the resolution ratio of the spectrograph is higher, simultaneously, the energy utilization ratio is higher, and the detection capacity of the spectrograph for a weak spectrum signal is improved; and a single-point photodiode is used to perform spectrum detection, accordingly, the spectrograph cost and the spectrograph size are reduced, and the detection sensitivity is improved.

The invention discloses an optical projection system for improving stray light near a projection picture. The optical projection system comprises a light source illumination subsystem, a total indicated runout (TIR) prism, a digital micro-mirror device and an optical imaging subsystem, which are sequentially arranged; the optical imaging subsystem comprises an imaging lens and a screen, which are sequentially arranged; the light source is used for emitting a light beam; a fly-eye lens is used for receiving the light beam emitted by the light source and for homogenizing the light beam; a relay lens unit is used for transferring the light beam which is homogenized by the fly-eye lens to the TIR prism; the received light beam is projected onto the digital micro-mirror device after being totally reflected by the TIR prism; the digital micro-mirror device modulates the received light beam and reflects the light beam to be projected onto the imaging lens through the TRI prism; the light beam is imaged on the screen through the imaging lens; and the optical projection system also comprises a light blocking element for preventing the stray light from entering the digital micro-mirror device, and the light blocking element is arranged on an incidence light path of the digital micro-mirror device; and a light blocking surface of the light blocking element is in a zigzag structure.

The invention discloses a reconstruction method for calculating a multispectral imaging map based on compressed sensing. The method of the invention is implemented based on a system composed of a telescope imaging module, a digital micro-mirror device DMD and control module, an optical converging lens, an optical filter wheel, a photomultiplier tube PMT, a data acquisition module, and a multispectral image reconstruction module. The system modulates the spatial information of a target scene according to the mathematical form of a preset modulation template, and carries out inversion by a subsequent data calculation method to obtain the multispectral image of the target scene. The reconstruction method has the following advantages: no scanning is needed, only a small amount of data is required for target scene image reconstruction, the detection sensitivity is high, and the structure is simple.

The present application relates to apparatus (100) for cooling a light valve device (103), the apparatus comprising an array of elongate members (119), the elongate members (119) each having a tip (131) for contacting the light valve device (103). The apparatus (100) is suitable for cooling a digital micro-mirror device (103). A duct (117) may be provided for directing a flow of air from a fan to the light valve device (103).

The invention relates to a compressive sensing theory-based digital holographic imaging device which comprises an image generation module, an image acquisition module and an image processing module, wherein the image generation module is used for generating a holographic image; the image acquisition module is used for acquiring the image, and transmitting image data to the image processing module; the image processing module is used for performing 3D (three-dimensional) object reconstruction imaging on the image data; the image acquisition module comprises a digital micro-mirror device for acquiring and compressing the holographic image generated by the image generation module so as to generate a compressed holographic image, a lens for converging an interference holographic image, a single-photon detector for acquiring an optical signal of the interference holographic image and an A / D (analogue / digital) converter for converting the optical signal to a digital signal. The invention also provides a compressive sensing theory-based digital holographic imaging method.

The invention discloses a car light control system and method. The system comprises a light source body module, a space light modulator module, an image sensing module and a central control module. The space light modulator module receives light emitted by the light source body module and emits the light through a digital micro mirror device, the image sensing module acquires images of external objects lighted by the light, the central control module analyzes the acquired images and sends control instructions to the space light modulator module according to an analysis module, and the space light modulator module adjusts the overturning angle of each micro lens in the digital micro mirror device according to the received control instructions to enable the quantity and the angle of the emitted light to be changed, such that a corresponding headlight illumination mode is dynamically adjusted according to real-time road conditions including light conditions, rain and snow weather, sharp turns, steep slopes and the like in front of a vehicle, an optimal road illumination effect is provided for a driver, and the driving safety is improved.

An optical projection system is disclosed. The optical projection system includes a base, a lamp provided in the base, a DMD assembly provided at one side of the lamp to generate image light from light irradiated by the lamp, and a projection unit for projecting the image light formed through the DMD assembly. The DMD assembly includes a DMD, a main circuit board provided with the DMD at one side, and a side circuit board which may be detached from or fixed to the main circuit board independently from the DMD assembly. The side circuit board may be provided at one side of the main circuit board at a right angle.

The invention discloses a liquid crystal phased array ghost imaging system and an imaging method thereof, belonging to the field of photoelectric imaging. The liquid crystal phased array ghost imagingsystem disclosed by the invention comprises a laser, a collimating lens, a digital micro-mirror device DMD, a spatial light modulator SLM, a single-pixel detector, an FPGA main control circuit, a first lens group and a second lens group. A modulation matrix module is used for controlling the work of the digital micro-mirror device and the spatial light modulator. A laser trigger module is used for controlling the working state of the laser. A coincidence calculation module is used for computing imaging. The first lens group is used for focusing. The second lens group is used for converging light beams. The invention further discloses a liquid crystal phased array ghost imaging method which is implemented based on the liquid crystal phased array ghost imaging system. The structure of the liquid crystal phased array ghost imaging system can be simplified under the condition that a speckle light field of a required structure is obtained. The system and the method have the advantages of flexible form and high imaging efficiency.

A projector includes a projection lens set, a digital micro-mirror device, a prism unit, a light merging unit, a light guide unit, and a light source device. The light source device includes a laser light source and a color wheel. The laser light source is positioned in a straight optical path and generates a first light. The color wheel is positioned in the straight optical path. The first light irradiates the color wheel to generate a second light and the third light. The light merging unit merges the first, second, and third lights to generate a mixed light. The light guide unit guides the mixed light to the prism unit. The mixed light is refracted to the DMD via the prism unit, and then the refracted mixed light is reflected to the projection lens set via the DMD.

A projector includes a projection lens set, a digital micro-mirror device, a prism unit, a light guide unit, and a light source device. The light source device includes a light emitting diode (LED), a laser light source, and a color wheel. The LED is positioned in a first optical path and generates a first light. The laser light source is positioned in a second optical path and generates a second light. The color wheel is positioned in the second optical path. The second light irradiates the color wheel to generate a third light. The light merging unit merges the first, second, and third lights to generate a mixed light. The light guide unit guides the mixed light to the prism unit. The mixed light is refracted to the DMD via the prism unit, and then the refracted mixed light is reflected to the projection lens set via the DMD.

The invention discloses a maskless photoetching alignment system which comprises an alignment light source, a digital micro mirror device, a projection objective, a silicon wafer, a photoelectrical coupling image device, an operating platform, a first dichroic spectroscope and a second dichroic spectroscope, wherein the first dichroic spectroscope receives alignment lights and then reflects the alignment lights to the digital micro mirror device; a computer controls the digital micro mirror device to generate digital gratings; the digital micro mirror device reflects the alignment lights to the projection objective, then the alignment lights are transmitted by the second dichroic spectroscope, and the digital gratings are projected to the silicon wafer and then superposed with the existing mark gratings on the silicon wafer; the alignment lights are reflected by the silicon wafer, then the alignment lights reflected by the second dichroic spectroscope are received by the photoelectrical coupling image device; moire fringe images acquired by the photoelectrical coupling image device are the images generated by the superposition of the digital gratings and the mark gratings on the silicon wafer; and in the computer, the phase information of the moire fringe images acquired by the photoelectrical coupling image device is solved, and the quantities of displacement and rotation of the silicon wafer are solved, and the operating platform is moved so as to realize the maskless photoetching alignment.

The invention relates to a real target scene simulation system based on a visible light target simulator. The simulation system includes an image simulation machine and the visible light target simulator. Specifically, the image simulation machine consists of: a data communication module, a data conversion module, and an image simulation module. The visible light target simulator includes: a DMD (Digital Micro Mirror Device) drive control system, a DMD display system, a projection optical system and a luminous flux control system. The simulation system provided by the invention can realize dynamic output of simulated images and can improve simulation fidelity.

An optical coupling device, a method of producing the same, and an optical apparatus using the same. A light transmitting medium of the optical coupling device is made of optical fibers to transmit the light. Three RGB laser beams can be compounded by forming one output end after heating one end of the optical fibers. Input ends of the optical fibers each have a lens to collimate each laser beam. A collimating lens installed at an output end of the optical fibers changes the compounded laser beam to a parallel ray. The optical coupling device made of the optical fibers can be applied to an image reproducing apparatus such as a projector and a projection TV. Especially, when the optical coupling device using the optical fibers is applied to an image reproducing apparatus having a DMD (digital micro-mirror device), the size of the image reproducing apparatus can be reduced and the quality of the image reproduced is improved.

The invention relates to an interference microscope, in particular to an interference microscope system based on programmable illumination. The interference microscope system based on programmable illumination comprises an illumination light source, an illumination module and a digital micro mirror device, wherein the digital micro mirror device comprises a digital micro mirror array, each digital micro mirror has an n degree deflection angle state and a -n degree deflection angle state, light enters the digital micro mirror device at the incidence angle of 2n degrees through refraction and reflection of a TIR prism, then the on or off state of each micro reflection mirror is controlled, the light is subjected to corresponding spatial modulation, and then the light exits perpendicularly from the digital micro mirror device. The light path enters a Mirau interference objective mirror through reflection of a beam splitter prism, and is split into two light beams through a beam splitter in the Mirau interference objective mirror, the two light beams are irradiated to a reference plane and a detected plane and then are reflected back, and optical interference is formed in the beam splitter. An interference optical field of a detected object returns from the interference objective mirror, passes through the beam splitter prism again, and is received by a detector after passing through a barrel mirror, and an interference image of the interference microscope is obtained.