175 results about "Optical reflection" patented technology

The invention discloses a muon monitoring device and a tunnel monitoring method thereof.The muon monitoring device comprises multiple layers of muon detection modules which are arranged in a laminated mode in the height direction, and each layer of muon detection module comprises a shell, a scintillator array, an optical reflection shielding layer, a front-end signal processing plate and a signal leading-out plate, and the scintillator array, the optical reflection shielding layer, the front-end signal processing plate and the signal leading-out plate are arranged in the shell; the scintillator array is arranged between the optical reflection shielding layer and the front-end signal processing board, and the front-end signal processing board of the muon detection module on the upper layer and the optical reflection shielding layer of the muon detection module on the lower layer of two adjacent layers are arranged oppositely, the scintillator array comprises a plurality of scintillator units arranged in a two-dimensional matrix mode, a photomultiplier is arranged at the bottom of each scintillator unit, the photomultipliers are fixedly installed on the front-end signal processing board, and the front-end signal processing board is in signal connection with the signal leading-out board arranged at the edge of the scintillator array.

The invention discloses an anesthesia preoperative risk assessment method and system based on multi-source data fusion, and relates to the technical field of medical informationization, and the method comprises the following steps: S001, building a cross-time-scale illumination and skin state combined observation baseline, injecting a micro-amplitude polarization mark in an image collection chain, and obtaining an image collection chain; extracting a hot spot track and a boundary definition curve through frame-by-frame image analysis, and constructing a time reference point set of a reflection behavior; and S002, based on the time reference point set, executing optical reflection decomposition on the observation image sequence, separating mirror reflection and diffuse reflection components under a unified light field model, generating a double-domain characteristic spectrum of a reflection domain and a blood flow response domain, and constructing an artifact risk map. According to the method, the time reference point and the polarization mark are constructed, illumination and reflection behavior modeling and separation are achieved, anti-fact playback, causal checking and dynamic regulation are combined, artifacts are accurately removed, real blood flow features are extracted, and the accuracy and stability of preoperative risk assessment are improved.

The present disclosure is a light reflection measurement device including: a first light source for outputting first continuous light; a second light source for outputting second continuous light as local light; and a signal processing unit for performing digital signal processing on a light reception signal I(t) obtained by multiplexing reflected light that is obtained by irradiating a measurement target with one branched light of the first continuous light, reference light that is the other branched light of the first continuous light, and the local light, in which the signal processing unit calculates an autocorrelation function between the light reception signal I (t) and a light reception signal I (t+τ) obtained by shifting the light reception signal by time τ, and measures reflection on the measurement target by using a position of a peak of the autocorrelation function.

The application discloses a method for designing and optimizing a VLCP system assisted by light reflection RIS under low signal-to-noise ratio, wherein the VLCP system comprises an intelligent wall adopting a smart surface RIS with mirror reflection, a transmitter and a user terminal equipped with a receiver with a liquid crystal smart surface, communication and positioning signals are integrated into the transmitter, the transmitter comprises an LED, and the method comprises the following steps: under low signal-to-noise ratio, taking asymptotic capacity as a communication metric constraint condition, taking a Cramer-Rao lower bound of positioning error as a positioning metric constraint condition, combining a positioning constraint satisfaction process based on a two-stage greedy algorithm and a communication performance maximization process based on a greedy strategy convex relaxation algorithm, optimizing elements of an RIS allocation matrix to maximize the asymptotic capacity, obtaining an optimal RIS allocation matrix, and completing the design and optimization of the VLCP system. In a low signal-to-noise ratio scene, the VLCP system of the application can significantly improve system performance by applying RIS.

The application relates to the technical field of LCD liquid crystal screen processing, and discloses a curved surface display screen backlight assembly preparation device, which comprises a monitoring base plate, a rotating mechanism, an optical reflection part and a monitoring assembly which are rotationally connected to the monitoring base plate, light emitted by the monitoring assembly passes through a gap between external workpieces and is reflected by the optical reflection part to form a mapping light path, and a reciprocating cleaning mechanism which is arranged on the monitoring assembly and comprises a motion conversion assembly which is in transmission cooperation with the monitoring base plate, a cleaning execution part and a light transmission window. The optical mapping detection light path which is composed of the monitoring assembly, the optical reflection part and a mapping plate is arranged, so that the defects that the assembly and correction mode of the LCD screen and the backlight plate assembly is single, the internal gap size is not easy to dynamically control and the edge position is usually corrected only are solved.

This invention belongs to the field of computer vision and image processing technology, specifically relating to a connector size inspection method and system based on industrial vision. The method includes: determining the effective detection area of ​​the pin through preprocessing and target region segmentation; extracting the original one-dimensional grayscale sequence of the pin's lateral direction and smoothing it to obtain a smooth one-dimensional grayscale sequence; calculating the optical reflection energy integral difference between the two ends of the pin's physical center based on the smooth one-dimensional grayscale sequence to construct a lateral optical reflection asymmetry index; extracting the absolute value of the sum of differences between adjacent rows and the sum of the absolute values ​​of the differences within the evaluation window to construct a structural torsional continuity coefficient; and correlating the maximum value of this index with the structural torsional continuity coefficient to obtain a comprehensive micro-torsion defect index, thereby achieving industrial vision inspection of connector dimensions. This invention effectively solves the problem that traditional two-dimensional inspection techniques struggle to identify pin micro-torsion and have a high false negative rate.

An optical reflection assembly, an optical lens module and an electronic device are disclosed. The optical reflection assembly includes a reflection element, a reflection element holder and a structure. The reflection element includes a reflection surface, wherein a light ray is incident on the reflection surface and is turned by the reflection surface. The reflection element holder includes a mounting surface, wherein the mounting surface is arranged corresponding to the reflection element. The structure is made of metal and has a three-dimensional structure. At least a portion of the structure is embedded in the reflection element holder. The structure includes a first support wall, a second support wall and at least one extension wall. The first support wall and the second support wall are bent to form a first bending line and present an angle. The extension wall and the second support wall are bent to form an extension bending line, and the extension bending line is an open line. In this way, the structural rigidity and the assembly reliability can be improved.

Optical Target The optical target (1) is designed to be placed on a surface and comprises: - a target support (2); - a first zone forming an optical reflector (9) for the λ laser and infrared frequencies, and placed on the target support. The optical target (1) includes a second zone (10) forming a filter permeable to infrared radiation and impermeable to λ laser radiation, the second zone (10) being superimposed on the first zone (9) and having a recess in its center. Figure for the abbreviation: Figure 1

The present application relates to a kind of information recovery methods based on scattering system, belong to spectral data processing technical field.The method is: the scattering characteristic of scattering system is calculated;Using the scattering characteristic calculated, establish scattering signal self-excitation amplification mechanism;On the scattering signal self-excitation amplification mechanism, incident light field time domain, space domain, frequency domain coding and trend decoding, wave analysis, to nearly completely recover scattering information;Using negative correlation statistical operation obtains the accurate scattering information of high noise scattering system.The present application is amplified by the scattering signal of special self-excitation method, based on light field composite coding and scattering information trend analysis, accurately judges input field information;By introducing negative correlation operation, can nearly completely recover incident field information, realize the nearly complete evaluation of the scattering characteristic of extremely high noise system.The present application promotes the progress of imaging technology not limited by the thickness of scattering medium, further promotes the development of realizing human clinical high-resolution optical reflection, transmission imaging.

The application relates to a three-dimensional spectrum combined PCB detection method and system based on multi-modal fusion. The detection method comprises the following steps: acquiring three-dimensional topographic data and multi-band spectral reflection data, and collecting the three-dimensional topographic data after structure light projection; performing cross-modal space registration processing according to the three-dimensional topographic data and the spectral reflection data to generate corresponding registration feature data; determining the defect state of the PCB surface; when the defect state is an appearance similar defect state and a material attribute difference state, corresponding fusion feature encoding signals are generated, spectral set consistency verification is performed, and a direct output defect recognition action is performed or dynamic compensation processing is performed until the conditions for the direct output defect recognition action are met. The same detection area can be described from two physical dimensions of geometric height change and material optical reflection difference, and the difference can be distinguished, so that more comprehensive and more reliable defect determination results can be obtained.

This invention relates to a method for monitoring delamination deformation of the roof strata in a mining roadway. The method involves drilling vertical monitoring holes in the roof of the roadway to be monitored, installing baseline monitoring components equipped with laser ranging probes in both the deep and shallow stable sections, and arranging monitoring instruments running laser ranging programs outside the monitoring holes. Baseline optical reflection components are installed at the monitoring hole openings. When delamination changes occur in the deep or shallow delamination development sections of the roof strata, the monitoring instruments instantly display the delamination value and continuously record it. The advantages of this invention are: it completely solves the problem of the dual-value effect in existing roof delamination monitoring; it facilitates understanding the development law of roof strata delamination, enabling inherently safe roof management; it enables online real-time continuous monitoring of deep and shallow baselines; and it overcomes the shortcomings of existing wire rope-pulled roof delamination detectors, allowing for long-term continuous operation.

The utility model relates to the technical field of rubber paste production and detection, in particular to a rubber paste coating thickness detection device. The rubber paste coating thickness detection device comprises a displacement detection assembly which comprises a laser displacement sensor and an optical reflection element; the fixed supporting device comprises a roller assembly and a fixed plate; the roller assembly is used for being in contact with a to-be-detected coating paste surface and generating vertical displacement along with the height change of the paste surface; the fixing plate is installed above the roller assembly and fixedly connected with the optical reflection element. The laser displacement sensor is arranged towards the optical reflection element, and is used for detecting the displacement of the optical reflection element by emitting a laser beam to the optical reflection element and receiving a reflection light spot; and the laser displacement sensor is in signal connection with a signal processing system and is used for converting the displacement into a thickness value of the coating paste surface. The rubber paste coating thickness detection device can eliminate personal errors, improve the detection precision and realize real-time monitoring.

A low-stress temperature control device of a satellite-borne optical reflector comprises an optical reflector, a flexible core shaft, a reflector back plate, a radiation temperature control plate, a temperature control flexible supporting column, a heating assembly, a thermistor and a thermal control multi-layer heat insulation assembly. The optical reflector is installed in a suspended mode through the flexible mandrel, flexible glue bonding, radiation temperature control and the like, the temperature adaptability is improved, and the influence of a temperature control device on the surface type of the optical reflector is reduced. And the reflecting mirror surface adopts silver and a dielectric film, and the area except the reflecting surface is coated with a plurality of layers of heat insulation components, so that the adaptability of the device to a complicated and changeable space heat flow environment is improved. In a limited rotation angle range of the reflector, through asymmetric layout of a long axis and a short axis, the emission height size is reduced. The method can be applied to a space pointing mechanism, is suitable for occasions where out-cabin height direction resources are limited such as a flat plate type satellite platform, has the advantages of being good in space environment adaptability, low in launching envelope and flexible in application, and is suitable for various orbit application scenes.

This invention provides an optomechanical interleaved splicing focal plane module, belonging to the field of optical inspection or optical image acquisition. The splicing focal plane module includes a focal plane module and an optical reflecting prism, with two focal plane modules arranged on both sides of the optical reflecting prism. The focal plane module includes multiple focal plate units arranged at a set interval on the module back plate. Each focal plate unit includes a focal plate, a data transmission unit, and a photosensitive chip unit. The splicing scheme of this application adopts an optomechanical interleaved splicing method, introducing an optical reflecting prism on the basis of the mechanical interleaving method, which can effectively shorten the splicing distance between the upper and lower chips. The splicing focal plane structure is symmetrically arranged on the left and right sides, with the two splicing modules being independent of each other, and each focal plane in each splicing module being independent of each other, which improves the range of splicing focal plane expansion, is easy to maintain, and can be widely applied in scenarios requiring optical image acquisition, such as semiconductor lithography, wafer optical inspection, photomask inspection, and overlay inspection.

Tunable optical metasurfaces can include an optically reflective surface to reflect optical radiation, such as infrared laser light. An array of optical resonant antennas can extend from or otherwise be positioned on the reflective surface, for example, at sub-wavelength spacing, e.g., less than half a wavelength. Voltage-controlled liquid crystals can be positioned in the optical field region of each optical resonant antenna. A controller can apply a voltage differential bias pattern to the liquid crystals of the optical resonant antennas, which can be arranged in a tiled, staggered, or randomly arranged subset of optical resonant antennas to obtain one-dimensional beam control, two-dimensional beam control, and / or spatial beam shaping.

An optical reflecting assembly includes a reflective member, a reflective element holder and a structure component. The reflective member includes a reflective surface for folding a light. The reflective element holder includes an assembling surface correspondingly disposed to the reflective member. The structure component is made of a metal material and has a three-dimensional structure, at least one portion of the structure component is inserted in the reflective element holder, and the structure component includes a first supporting wall, a second supporting wall and at least one extending wall. The first supporting wall and the second supporting wall are bent to form a first bending line with an angle. The extending wall and the second supporting wall are bent to form an extending bending line being a non-closed line.

The invention discloses a mechanical arm control method and system for numerical control machining based on machine vision localization, and relates to the technical field of machine vision. According to the method, a multi-angle camera collection array is configured, differential illumination is implemented in combination with an annular adjustable light source, the optical reflection characteristic of residues such as liquid films and oil spots on the surface of a workpiece can be effectively enhanced, and the machining precision is improved. Therefore, the recognition precision of the surface residual features in the image acquisition stage is improved. Further constructing a workpiece surface residual feature vector through gray level distribution, gradient change and a scattering anomaly enhancement function, and introducing an optical scattering response enhancement item on the basis of retaining image structure gradient information by adopting a residual influence factor Rif improved based on an image total variation principle to obtain a residual feature vector; the detection sensitivity and the evaluation accuracy of hidden residual areas such as a liquid film are effectively improved. Through normalization processing and dimensionless dimension construction, image processing results under different workpiece sizes and different illumination conditions have good stability and transverse contrast.

The present invention relates to a lighting assembly. The lighting assembly includes: a first decorative component; a light-transmitting thin film attached to the first decorative component; and a first light guide configured adjacent to the first decorative component and including a first optically reflective information structure attached to the first light guide and including a first information and a first light source emitting a first light, wherein the first light illuminates the first optically reflective information structure and penetrates through the first decorative component and the light-transmitting thin film to render the first information to be displayed on a display surface, when the first light source is activated.

This application relates to the field of quantum sensing technology and proposes an optically coated alkali metal gas cell structure, comprising: a glass shell, including a first light-transmitting surface, a second light-transmitting surface, a third light-transmitting surface, and a fourth light-transmitting surface; an optical beam splitter, disposed on the first light-transmitting surface, for splitting the incident laser into a first beam and a second beam; a first optical reflective film, disposed on the second light-transmitting surface; a second optical reflective film, disposed on the third light-transmitting surface; and an optical anti-reflection film, disposed on the fourth light-transmitting surface. The first beam, after being reflected by the optical beam splitter, is emitted as monitoring light, and the second beam, after being transmitted through the optical beam splitter, is reflected sequentially by the first and second optical reflective films before emitting light from the fourth light-transmitting surface. By integrating the optical beam splitter, reflective film, and anti-reflection film, the function of a polarizing beam splitter prism is integrated with the alkali metal gas cell, which not only improves the probe integration and reduces the overall volume but also effectively extends the propagation path of the pump light within the gas cell.

There is provided a display control apparatus. A mirror is configured to project an optical reflection image onto a front surface thereof and transmit light from behind the mirror. A display is disposed behind the mirror. An image sensor shoots a field of view on the front surface side of the mirror. A controller controls a display state, in the display, of an image acquired by the shooting, based on a state of a user on the front surface side of the mirror.

The invention discloses a locking device for a battery compartment door of a battery replacement cabinet and a state detection method. The device comprises a battery replacement cabinet body, a door plate and a locking execution assembly. Battery cabins are uniformly formed in the front side of the battery replacement cabinet body, door plates are arranged on the front sides of the battery cabins in a one-to-one correspondence manner, lock hooks are mounted in the middles of the inner sides of the door plates, and locking execution assemblies aligned with the lock hooks are mounted on the side walls of the battery cabins; an extension plate is fixedly installed on the inner side of the door plate, and a plurality of sets of optical reflection pieces are installed on the edge of the extension plate in an embedded mode through prefabricated holes. And flight time sensors in one-to-one correspondence with the optical reflection sheets are mounted in the side wall of the battery replacement cabinet body. According to the invention, through the three non-collinear distributed optical reflection sheets and the flight time sensor, an initial distance value is collected in an ideal state that the door plate is completely closed, a reference plane corresponding to each bin door is established, and the gap between the door plate and the battery bin can be conveniently and directly detected.

The application discloses a full-dielectric optical microwave light splitting and frequency splitting element, which comprises a one-dimensional photonic crystal optical reflection film and a wave-transparent substrate. The one-dimensional photonic crystal optical reflection film is an alternating film system structure composed of two high and low refractive index dielectrics, and the film system structure comprises a visible light reflection film system structure and an infrared reflection film system structure, which can efficiently reflect visible light and infrared light. The wave-transparent substrate is a microwave non-destructive dielectric substrate, which can ensure efficient transmission of microwaves. The visible light reflection film system structure and the infrared reflection film system structure are grown on the wave-transparent substrate from bottom to top. The light splitting and frequency splitting element separates the signals of light waves and microwaves through reflection of light waves and transmission of microwaves, and can be applied to the optical SAR integrated co-time phase detection field, realizes efficient reflection of visible light and infrared light in a large field of view, and effectively improves the light splitting and frequency splitting efficiency.

The purpose of the present invention is to improve HUD image visibility of laminated glass having an antifogging device. This laminated glass is provided with a first glass plate, a second glass plate, and an intermediate film which is positioned between the first glass plate and the second glass plate and which bonds the first glass plate and the second glass plate. The optical reflection layer reflects light incident from the first glass plate side; a heating functional layer that is disposed closer to the second glass plate than the optical reflective layer in a cross-sectional view, and that at least partially overlaps the optical reflective layer in a plan view; and a first shielding layer that is disposed between the optical reflection layer and the heating function layer in a cross-sectional view, and that overlaps the heating function layer in a plan view.

This application discloses a cuboid laser reflector auxiliary heating device and its control method based on heat flux topology reconstruction, belonging to the field of laser optics technology. This application aims to solve the problem of insufficient global temperature uniformity accuracy of existing uniform heating compensation methods due to spatial mismatch between the auxiliary heating field and the laser Gaussian thermal field. The device includes a cuboid reflector substrate, a continuous wiring channel on the back of the reflector substrate, and an electrothermal element embedded in the channel. The electrothermal element is spatially divided into at least two independently controlled auxiliary heating regions. The wiring density and power supply voltage of the electrothermal element in each region are coordinated, so that the Joule heat power density distribution generated by the electrothermal element on the back of the reflector substrate and the Gaussian heat flux density distribution of the incident laser on the reflecting surface satisfy a spatial complementary conjugate relationship, thereby forming a uniform total thermal field across the entire region. This application can accurately fill the temperature troughs in the laser Gaussian thermal field at the edge of the reflector, achieving high-precision temperature compensation.

The present disclosure relates to the system (600) comprising a plurality of optical reflectors (500), each optical reflector comprising a concave reflector (516) and a convex reflector (508). The plurality of optical reflectors (500) is configured diagonally to one another at a distance greater than the focal length of the concave reflector and less than or equal to twice the focal length of the concave reflector. The system may include a light source in which a small fraction of the light from a parallel beam is scattered by the convex reflector of the optical reflectors, and the remaining light is reflected by the concave reflector to the next optical reflector of the plurality of optical reflectors.

The present disclosure discloses an adaptive beam collimation and quality optimization system and method based on spot gridding, which belongs to the field of laser transmission. In the adaptive beam collimation and quality optimization system, a first optical reflector is installed at the front end of a three-module optical mirror frame, and an incident laser beam is reflected by a first optical reflector to reach a second optical reflector, and then the beam is output after being reflected by the second optical reflector again; an image collector collects a spot image on the second optical reflector and stores it to a computer; a computer processes the collected spot image, extracts a real-time relative position of the spot on the second optical reflector, compares the real-time relative position information with a pre-calibrated position to obtain the offset of the spot, correct the offset of the reflected beam, and feedback the intensity information of the adjacent small unit spot to a spot unit piezoelectric ceramic array module controller to correct the distortion of the reflected beam. The present disclosure can realize adaptive beam collimation and spot optimization without manual guarding and operation, and is applicable to the collimation and spot optimization of large-diameter beam transmission.

The application relates to the technical field of online detection, in particular to a wafer online detection system which comprises an edge calibration module, a probe switching module, a temperature sensing module, an optical detection module and a dynamic compensation module.In the application, the coordinate error of the edge area of the wafer is analyzed in detail, the offset rate data are established, the periodic deviation in the probe switching process is compared, the precision of the probe switching is remarkably improved, the analysis of the temperature sensing and optical reflection data is optimized, and then the accurate spectral layer difference marking diagram is obtained.Through the combination of the regional temperature difference fluctuation spectrum and the optical error diagram, the optical detection and temperature detection of the wafer are dynamically compensated, the wafer online detection effect is greatly improved, the fine positioning and identification of the wafer surface defects are realized, the overall precision and efficiency of the wafer online detection are improved, the risk of defect missed detection and misjudgment is reduced, and the automation level in the production line detection process and the accuracy of the detection result are further optimized.