334 results about "Optical alignment" patented technology

The invention relates to an automatic visual alignment method and system based on a photoetching machine and a storage medium, and relates to the technical field of optical alignment. The automatic visual alignment method comprises the following steps: sequentially focusing image taking areas according to a preset multi-light-source visual focusing mechanism, recording corresponding global focusing parameters, and collecting corresponding original single-layer images; screening all the original single-layer images according to a preset image definition threshold value to obtain a to-be-detected image, and extracting corresponding key channel features; calculating a comprehensive feature error of the key channel features according to a preset image hierarchy template, and judging an initial focusing state in combination with a preset parameter error interval; correcting the global focusing parameter according to the initial focusing state in combination with a preset cooperative calibration mechanism, generating a corresponding control signal, and cooperatively tuning the corresponding visual equipment; through multi-light-source multi-time visual image capturing, the problem of poor alignment precision caused by light source errors and image capturing errors is reduced, the image matching accuracy is improved, and the visual alignment precision is improved.

The invention discloses a phase recovery method based on non-interference coding aperture holography, and belongs to the field of computational optical imaging. According to the technology, phase information of an object is directly extracted from a single hologram through a physically-driven numerical optimization framework in combination with Wiener inverse filtering and an improved G-S (Gerchberg-Saxton) algorithm. A frequency domain inverse filter is constructed based on system modeling of a point diffusion hologram, noise interference is effectively suppressed, meanwhile, a historical gradient acceleration strategy is provided, a convergence path is optimized by dynamically adjusting an iteration step length, and the calculation efficiency is improved. The technology has the core advantages that the limitation of a traditional interference light path is broken through, precise optical alignment or multi-time out-of-focus surface data acquisition is not needed, the system architecture is simplified, the environmental adaptability is enhanced, and quantitative phase distribution reconstruction of transparent and weak scattering samples can be realized through single exposure.

The invention relates to an image processing method suitable for a variable-size TFT display screen, and the method comprises the following steps: obtaining the size and range of a display region of the TFT display screen in real time, and obtaining the position coordinate range of an edge region of an optical alignment film; detecting the pixel brightness in the coordinate range of the corresponding position of the edge area of the optical alignment film by adopting an image processing method; calculating to obtain compensation curve correction parameters by combining factors influencing the brightness distribution of the edge area; correcting the pixel brightness of the edge area of the optical alignment film by adopting the compensated brightness distribution curve; after the pixel brightness compensation of the edge area is completed, obtaining a change value of the display contrast before and after the compensation; and the compensation curve parameters of the edge region are adjusted in real time by analyzing the relationship between the change value of the display contrast and the pixel brightness compensation intensity. The brightness uniformity of the edge area of the TFT display screen can be effectively improved, the overall display quality is improved, the requirements of display screens of different sizes can be met, and high practicability and adaptability are achieved.

A method is performed using a transparent display alignment system in a vehicle. The transparent display alignment system includes a transparent display through which a user's eyes behind the transparent display view an external scene in front of the transparent display. The method comprises: receiving an eye position of the eyes, a vehicle position for the vehicle, and an external object position of an external object in the external scene; computing a parallax-free position on the transparent display that intersects with a line-of-sight from the eye position to the external object position through the transparent display, at least based on the eye position, the vehicle position, and the external object position; and positioning a graphic object on the transparent display at the parallax-free position to align the eye position, the graphic object, and the external object to avoid parallax when the eyes view the external object through the transparent display.

Optical alignment of a receptacle at an aligned position on an optoelectronic device body is accomplished using an alignment optical connector that is demountably attached to the receptacle by matching passive alignment features on the facing surfaces between the receptacle and the alignment optical connector. The device body includes a first row of at least two data optical ports, and a second row of alignment input and output ports parallel to and spaced from the first row of data optical ports by a parallel spacing. The data optical ports communicate with the optoelectronic device. The alignment ports correspond to a loopback waveguide. The aligned position of the receptacle is determined from the loopback waveguide. The receptacle is permanently attached to the device body at this aligned position. A data optical connector is similarly configured as the alignment optical connector, in the manner in which optical fibers are supported to input / output optical signals and with similar passive alignment features, but the passive alignment features are referenced to the optical fibers by an offset equivalent to the parallel spacing between the first and second rows. The second row is same or shorter than the first row. The number of data optical ports is greater or equal to the number of alignment optical ports. The data optical ports and the alignment optical ports are arranged in a 2×N matrix.

The invention relates to the technical field of laser beam shaping, discloses an active test method and system for a circuit breaker, and is used for solving the problem that the self-adaptive shaping capability of a CO2 laser beam is difficult to improve by the existing method. Firstly, a stable light path is constructed, and the stability of the light path is ensured through mechanical limiting, a thermal management module and multi-stage optical alignment; then low-power calibration is carried out, a deformable mirror initial driving table is generated through a least square inversion algorithm, and a flat-topped beam reference is established; data are collected through a wavefront sensor, a high-order mode is reconstructed, the voltage of a deformable mirror is dynamically refreshed, and wavefront control and scanning motion synchronization is ensured in combination with scanning galvanometer time sequence synchronization, closed-loop control and exception handling; monitoring the temperature of the deformable mirror, starting water-cooling adjustment, and correcting the driving table to cope with the heat effect; finally, a safety system is constructed, laser power, wavefront distortion and deformable mirror stroke parameters are monitored, dry gas purging is conducted on the diffractive optical element regularly, and safety guarantee and performance verification of the whole process are achieved.

The invention discloses an active optical alignment method based on a local lightweight language model, and particularly relates to the technical field of precision installation and adjustment, comprising the following steps: extracting image indexes and platform attitude information through image acquisition, constructing a unified input format, verifying and inputting the language model; generating a six-degree-of-freedom pose adjustment strategy and a credibility score; the strategy is executed by the platform control device after being verified by a preset criterion; scoring is performed again after execution, and whether a feature posture is recorded or error compensation is triggered is judged according to a scoring result, so that subsequent input and strategy generation are optimized, and alignment precision and stability are improved; according to the method, the data consistency is guaranteed through a unified input format and a verification mechanism, the alignment precision is improved in combination with a dynamic scoring strategy, and the stability and fault tolerance of the system are enhanced by introducing a feature attitude recording and error back-filling mechanism, so that a strategy generation and execution process with high reliability, high adaptation and high robustness in an active optical alignment task is realized.

The invention relates to the technical field of high-precision motion control, in particular to a rigid-flexible composite flight positioning platform motion planning method based on an input shaping theory and an S-shaped curve. According to the technical scheme, the method comprises the following steps that parameterization is conducted on an S-shaped curve, and multi-stage motion parameters including the inherent frequency f of the flexible platform are defined; setting a residual vibration minimization condition; establishing an optimization model; solving an optimal time parameter by adopting an intelligent optimization algorithm; and calculating displacement contributed by the initial speed and the acceleration according to the optimal time parameter, solving the maximum acceleration, and generating an optimal motion planning curve. Through phase offset and time symmetry design, the vibration energy at the inherent frequency is remarkably reduced, the maximum acceleration required by platform movement is calculated within extremely short time, then the optimal movement curve of the platform is obtained, the platform can make a quick decision within several milliseconds, meanwhile, the displacement error can be smaller than 10 micrometers, and the stability of the platform is improved. The method is suitable for high-precision manufacturing, optical alignment and other harsh scenes.

A telescope including an optical alignment system. The telescope has a segmented primary mirror and the mirror segments have facets that are used to direct metrology light for aligning the telescope.

A print engine of an additive manufacturing system includes a print station configured to hold a removable cartridge. A laser engine including a frame can be positioned to hold at least one removable field replaceable unit that includes at least some laser optics or patterning optics. An optical alignment system can be attached to at least one of the print station or the laser engine to align the field replaceable unit with respect to the removable cartridge.

A multi-spectral optical sensor comprises a plurality of apertures, a plurality of lens arrangements, a plurality of optical filters and a monolithic semiconductor chip defining a plurality of sub-arrays of optical detector regions, each sub-array comprising the same number and relative spatial arrangement of optical detector regions and the optical detector regions of each sub-array being arranged on a predetermined pitch in a direction parallel to a surface of the of the semiconductor chip. The multi-spectral optical sensor is configured so that light from a scene incident on any one of the apertures along any given direction of incidence is transmitted through the corresponding lens arrangement and the corresponding optical filter to the corresponding sub-array of optical detector regions so as to form an out-of-focus image at a plane of the optical detector regions of the corresponding sub-array of optical detector regions.

The present disclosure is directed to imaging LiDARs with separate transmit (Tx) and receive (Rx) optical antennas fed by different optical waveguides. This pair of optical antennas can be activated at the same time through a dual-channel optical switch network, with the Tx antenna connected to a laser source and the Rx antenna connected to a receiver. The Tx and Rx antennas can be positioned adjacent to each other, so they point to approximately the same far-field angle. No optical alignment between the Tx and Rx is necessary. This LiDAR configuration, referred to herein as pseudo-monostatic LiDAR, eliminates spurious reflections and increases the dynamic range of the LiDAR.

An integrated image sensor and lens assembly may include a lens barrel, a collet, and a lens mount. The lens barrel may be coupled to the collet which is coupled to the lens mount. The lens barrel and the collet may each include a fastening structure reciprocal to each other. Alternatively, the collet and the lens mount may each include a fastening structure reciprocal to each other. The optical distance between the set of lenses and the image sensor may be tuned such that the focal plane of the lenses coincides with the image plane. The fastening structures allow the lens barrel to be adjusted relative to the lens mount in order to shift the focal plane in a direction along the optical axis to compensate for focal shifts occurring during assembly / cure and / or temperature cycling.

The invention, which relates to the technical field of electrical monitoring, discloses a multi-fault linkage simulation-based electrical fire early-stage symptom monitoring and identification apparatus comprising the steps of performing monitoring to obtain thermal parameter distribution, gas parameter distribution and optical parameter distribution, performing distinction analysis to obtain thermal distinction distribution, gas distinction distribution and optical distinction distribution, and then performing combination to obtain an electrical fire early-stage symptom identification result; obtaining a plurality of distinction degree distribution combinations, carrying out distinction degree alignment processing to obtain a plurality of alignment position distributions, and calculating a thermal alignment deviation degree, a gas alignment deviation degree and a light alignment deviation degree; and performing arc prediction to obtain a thermal prediction arc parameter, a gas prediction arc parameter and a light prediction arc parameter, and performing weighted calculation to obtain an arc parameter as a monitoring identification result. According to the invention, the technical problems of low electrical fire fault early-stage identification accuracy and delayed early-warning response in the prior art are solved, and the technical effect of improving the electrical fire fault identification accuracy and reliability is achieved.

An active infrared system may include at least one metamaterial optical element. The active infrared system may also include at least one lens assembly optically aligned with the at least one metamaterial optical element. The active infrared system may also include at least one active camera optically aligned with the at least one metamaterial optical element. The at least one metamaterial optical element of the active infrared system may also be configured with at least a reflection mode for reflecting at least one light waveband reflected by a remote object and a transmission mode for transmitting a uniform background light that is wider than the at least one light waveband reflected by the remote object.

The invention provides an array glue spraying type nanoimprint device and method, and relates to the technical field of micro-nano manufacturing, and the device comprises a substrate adsorption unit which is used for adsorbing a substrate to drive the substrate to move; the flexible leveling unit is used for adsorbing the mother set, and the substrate adsorption unit drives the substrate to move so as to enable the substrate to be aligned with the mother set, enable the substrate to be in contact with the mother set and apply imprinting force; the glue spraying unit is used for spraying imprinting glue drops which are preset in glue drop size and are arranged in an array to the surface of the substrate; the optical alignment unit is used for observing an alignment mark between the substrate and the mother set and determining the alignment state of the substrate and the mother set; the electric displacement unit is used for driving the substrate adsorption unit to move; the exposure unit is configured to expose the imprinting glue under the condition that the substrate and the master mask are aligned and compressed, so that the imprinting glue is cured; and the control unit is used for controlling all the units to execute corresponding actions.

An optical inspection system is provided with a fixture for supporting a glass sheet, the fixture having an optical reference. The ultraviolet laser and associated optics form a planar, sheet-shaped laser beam that intersects the surface of the glass sheet, thereby causing the surface to fluoresce and form visible wavelength lines on the surface. The camera has an image sensor for detecting an optical reference and a visible wavelength line across at least a portion of the width of the sheet. The control system is configured to (i) image the optical reference on the stationary device, (ii) define an optical reference coordinate system from the imaged optical reference, (ii) receive a mathematical model of the glass sheet in a model coordinate system, and (iii) associate the optical reference coordinate system with the model coordinate system via at least one transformation. A method of using the non-contact optical inspection system is also provided.

A semiconductor device and method of manufacturing are disclosed. The semiconductor device includes an optical die, a laser die, and an interposer. The optical die has photonic integrated circuits (PICs), electronic integrated circuits (EICs), and one or more first coupling waveguides. The laser die has at least one laser diode and one or more second coupling waveguides. The optical die and the laser die are bonded to a first side of the interposer using a metal-to-metal bonding, where at least one of the one or more first coupling waveguides is optically aligned with at least one of the one or more second coupling waveguides. An optical glue fills a gap between the aligned at least one of the one or more first coupling waveguides and the at least one of the one or more second coupling waveguides.

The invention discloses a spatial moving target optical comb rapid distance measurement method and system based on a hierarchical guidance strategy, relates to the technical field of spatial moving target distance measurement, and aims to solve the problems of long alignment time, high energy consumption and high efficiency caused by the fact that traditional optical alignment before moving target scanning depends on a preset global scanning mode. And the requirements of dynamic tracking distance measurement are difficult to meet. The system is divided into a laser emitting and scanning part, an image receiving and processing part and a processor part. The laser emission scanning part utilizes the deflection of a fast reflecting mirror to change a laser light path, and scans a reflecting prism on the surface of a target; the image receiving and processing part reflects an image of a target reflecting prism to a binocular camera through a small fast reflecting mirror, and then inputs an imaging result of the camera into an image processing module to calculate a relative pose with a target; and the main processor performs target motion estimation and scanning path planning according to the relative pose information, and inputs reference path information to the fast steering mirror driving circuit to implement tracking control. Through a multi-sensor fusion sensing algorithm, accurate target sensing and positioning in a complex space environment are realized, interference such as in-orbit platform vibration and space illumination condition change under a microgravity condition can be effectively coped with, and thus the robustness and accuracy of space target detection are greatly improved.

Provided are an optical alignment device and an optical alignment method. The optical alignment device includes an input optical fiber, a light source provided at one terminal of the input optical fiber to generate input light, an input stage provided at another terminal of the input optical fiber, an output stage spaced apart from the input stage, a stage driving control unit configured to control driving of the input and output stages, a camera configured to receive output light generated from the input light by the waveguide chip and detect a waveguide mode, an output optical fiber having one terminal connected to the output stage, an optical power meter configured to detect an intensity of the output light, and a system controller configured to determine the waveguide mode and the intensity of the output light.

The invention relates to an optical system installation and adjustment method based on a double-branch neural network model, relates to the technical field of crossing of optical installation and adjustment and artificial intelligence, and solves the technical problems that in the prior art, a model is limited in misalignment prediction precision, low in generalization ability and difficult to apply to an actual installation and adjustment scene. The method comprises the following steps: analyzing element imbalance sensitivity; analyzing actual installation and adjustment scene noise; generating a neural network model training data set; constructing and training a neural network model; and the neural network model is utilized to guide actual installation and adjustment. According to the optical system installation and adjustment method based on the double-branch neural network model, the noise influence in an actual installation and adjustment scene is considered in the data set of model training, the anti-noise capability and robustness of the model are enhanced, and the applicability of applying the neural network model to real optical installation and adjustment is improved.

A multi-cavity system for intracavity laser pumping, comprising a first laser cavity. The first laser cavity may comprise a first gain chip, configured to generate a first laser beam, and a first end mirror disposed optically in line with the first gain chip, configured to reflect the first laser beam back to the first gain chip. The first laser cavity may further comprise a second gain chip disposed optically in line with the first gain chip. The first laser beam may be configured to excite the second gain chip. The second gain chip may be configured to generate a second laser beam upon excitation by the first laser beam. The system may further comprise a second laser cavity at least partially intersecting with the first laser cavity. The second laser beam may be configured to be directed through the second laser cavity.

The invention discloses an optical adjustment and detection method for VR / AR glasses. The method comprises the following steps: 1) adjustment; (11) focusing; 12) adjusting the posture; 2) detecting; 21) performing distortion detection; 22) carrying out MTF detection; 23) detecting the uniformity of dirt and brightness; and 24) artifact detection. And 3) recording and judging a result. According to the method, the visual guidance technology and the optical performance real-time feedback are combined, the camera is used for capturing the image for analysis, the position and the inclination angle of the VR / AR lens group can be accurately measured, and accurate positioning of the optical element in the assembling process is ensured.

An interferometric module, constructed in single pentagonal block to produce high quality, robust, low cost entangled-photon sources enabling polarization entanglement swapping. The compact block forms a generic platform that facilitates a comprehensive integration of optical components while allowing for quick optical alignments. Phase-stability of the self-balanced Sagnac interferometer is harnessed to offer a highly stable performance at room temperature and under sever operating conditions. High-quality entanglement is inherently achieved by equalizing two interferometric optical paths from counter-propagating photons. A periodically poled nonlinear crystal is placed between two half-wave plates, which also serve to correct the polarization states of the photons. The result is compensation-free and plug-and-play entangled-photon sources for quantum routers, distributed quantum sensing and quantum telecommunication. Wavelengths and generation rate of photon pairs are realized via the hosted crystal. Energy and polarization entanglement, and hyperentanglement can be remotely set by rotating the polarization state of the pump laser diode.

An example test system includes a probe card configured to contact a device under test (DUT); a module including a first optical connector configured to contact a second optical connector on the DUT, with the first optical connector being for a fiber optic cable; and a motion system configured to move into, and out of, contact with the module. When the motion system is in contact with the module, the motion system is configured to move the module relative to the DUT in order to align the first optical connector to the second optical connector.

The application provides a batch precise chip pasting method, comprising: pasting an integral piece of to-be-pasted chips on a base film, the base film being provided with a boss structure, and the top surface of the boss structure being provided with a first alignment mark; cutting the to-be-pasted chips based on the chip layout on a target wafer to form a plurality of independent chips on the base film; aligning the cut to-be-pasted chips with the target wafer, wherein the alignment is achieved by aligning the first alignment mark on the top surface of the boss structure of the base film with a second alignment mark on the target wafer; pasting the plurality of chips on the base film on the target wafer; and removing the base film. The application realizes super-high-precision optical alignment and solves the technical problem of direct alignment between thick chip wafers.

The utility model relates to an optical alignment assembly for an exposure machine. The optical alignment assembly comprises two optical alignment devices and a double-sided reflecting mirror, the double-sided reflecting mirror is vertically arranged on a position to be aligned of a working platform and is provided with a first vertical reflecting surface and a second vertical reflecting surface opposite to the first vertical reflecting surface, and the first vertical reflecting surface and the second vertical reflecting surface are respectively and optically coupled with the semi-transparent mirror. The double-sided reflector is provided with at least one preset pattern for imaging to an image acquisition assembly, and the preset pattern is used as a positioning reference of the to-be-aligned light.

The invention discloses an automatic multifunctional BGA rework station, belonging to the field of BGA equipment, comprising a machine head, wherein the machine head is provided with an exhaust gas extraction system, a three-color indicator light, an emergency stop switch, a grating protection system, a caster foot cup and an oil mist separator in sequence from outside to inside and from top to bottom, an industrial computer is provided in a lower cover of the machine head, a display bracket is provided in the right front of the machine head, two displays are provided on the display bracket, a keyboard and mouse placement plate is provided on one side of the display, and a keyboard and mouse are placed on the keyboard and mouse placement plate, a reference bottom plate is provided under the machine head, and a preheating lifting system, a preheating box, a first cooling system, an optical alignment system, a moving temperature zone, an auxiliary axis, a moving temperature zone X axis, a moving temperature zone Y axis, a lower hot air system, a stage mechanism and a feeding system are provided in sequence from bottom to top on the reference bottom plate; the equipment integrates multiple functions in one, has an ultra-large preheating temperature zone, and has automatic dismantling and welding functions, can complete the rework of BGA in an integrated manner, and reduces the workload.

A firearm-scope-attachable diopter lens device is provided. The device is comprised of an eyepiece-mounted optical accessory configured to affix securely over the eyepiece of a standard firearm scope without requiring any permanent modification to the scope itself. The device comprises a housing with at least one optically-aligned diopter lens, available in a range of diopter strengths to correct myopia, hyperopia, or astigmatism. In certain embodiments, the lens is installed in a removable cartridge that interfaces with the housing via a fastener such as a magnetic ring, twist-lock, or bayonet mechanism. Selective lens tinting may be applied to enhance contrast and reduce glare in varying light conditions. An optional micro-adjustment ring concentrically aligned with the lens permits fine diopter calibration in increments of ±0.25 diopters. A protective flip-up cap with a silent hinge mechanism and optional locking feature is integrated to shield the lens from debris when not in use.