298 results about "Optical reflection" patented technology

The invention discloses lithotripsy equipment and a control method thereof. The lithotripsy equipment comprises a lithotripsy device, an optical tracking device, a display and control device and an ultrasonic imaging device, the lithotripsy device comprises a mechanical arm module, a shock wave module and a control module; the mechanical arm module and the shock wave module are both electrically connected with the control module, and the control module and the optical tracking device are both electrically connected with the display and control device. The ultrasonic imaging device comprises a handheld ultrasonic probe; the handheld ultrasonic probe is in communication connection with the display and control device; the mechanical arm module comprises a mechanical arm, the shock wave module comprises a shock wave generator, and the shock wave generator is arranged at the front end of the mechanical arm; and a plurality of optical reflection markers are arranged on the backs of the handheld ultrasonic probe and the shock wave generator. According to the lithotripsy equipment provided by the embodiment of the invention, the intelligent degree of the extracorporeal shock wave lithotripsy machine is improved, the extracorporeal shock wave lithotripsy treatment process is simplified, and the treatment positioning precision is improved.

The invention discloses a dynamic multi-spot projection optical system based on an LED light source, which comprises the LED light source, a reflecting cover, a grating sheet, a condensing lens, a concave reflector and an optical reflection assembly, and is characterized in that the LED light source is arranged at the bottom of the reflecting cover, and the grating sheet is provided with a light-transmitting area with a preset pattern shape; the reflecting cover consists of a plurality of plane reflectors A; the concave reflector consists of a plurality of plane reflectors B; light emitted by the LED light source forms a pattern light beam through the grating piece, the light beam is divided and reflected into a plurality of sub light beams through the conical reflecting cover, and the sub light beams are guided to the condensing lens through the optical reflecting mirror set. According to the invention, a low-cost, laser-free and safe LED scheme is adopted, and through innovative optical design, a complex dynamic light and shadow effect comparable to or even surpassing laser projection is realized, and the imaging definition is kept unchanged within a projection distance range of 2-15 meters.

The invention relates to the technical field of illumination angle adjustment, in particular to a tea table illumination angle adjustment control method and system, and the method comprises the following steps: obtaining optical reflection characteristic data of a desktop area, three-dimensional geometric data of an article and user observation point information, and constructing a space model for illumination evaluation; when it is monitored that the desktop environment changes, the changes include that an object enters an unstable state, whether the illumination state touches a preset judgment threshold value or not is evaluated based on the current light source projection angle, and the judgment threshold value comprises a glare threshold value, an illumination uniformity threshold value and a secondary reflection avoidance threshold value; if any judgment threshold value is touched, re-calculation and adjustment of the current light source projection angle are started; and if any judgment threshold is not touched, the current light source projection angle is maintained. The problems of glare, uneven illumination, secondary reflection and the like are effectively solved, and the visual comfort of a user is improved.

Embodiments of the present disclosure provide a passive optical network (PON) coexistence method and apparatus. The method comprises: at a same moment, controlling one of a 50G PON downlink signal and an EPON & 10G EPON uplink optical signal to be transmitted in a PON optical path, wherein the 50G PON downlink signal comprises a 50G PON downlink optical signal and / or a 50G PON downlink optical reflection signal, and the EPON & 10G EPON uplink optical signal comprises an EPON uplink optical signal and / or a 10G EPON uplink optical signal.

A device includes a photonic integrated circuit (PIC) of a PIC structure. The PIC includes a substrate and a waveguide structure disposed on a first side of the substrate. The waveguide structure includes an optical reflector disposed on a waveguide. The device further includes a set of optical elements of the PIC structure. The set of optical elements is formed on a second side of the substrate opposite the first side of the substrate. The optical reflector is configured reflect an optical signal received from the waveguide toward the set of optical elements.

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 relates to the technical field of semiconductor packaging, and discloses a bonding wire welding method based on bare chip interconnection, and the method comprises the steps: collecting and fusing acoustic response and optical reflection signals of a bonding interface in real time through a multi-mode in-situ sensing mechanism integrating acoustic resonance and surface plasmon resonance; dynamically calculating the thickness, the mechanical coupling deformation and the energy dissipation state of the intermetallic compound layer; and the ultrasonic power and the bonding force are subjected to closed-loop adjustment in combination with a model prediction control algorithm, so that the welding process is evolved along a preset optimal physical path all the time. The system comprises a multi-mode sensing welding head, a synchronous data acquisition module, a state resolving module and a self-adaptive control module. The transparent and intelligent welding process is realized, and the bonding consistency, reliability and yield of high-density interconnection are remarkably improved.

Methods, systems, and storage media for performing multi-user gaze tracking in a vehicle space using multi-surface optical reflections are disclosed. Implementations may: acquire face and eye region image data of a plurality of occupants within a field of view of at least one camera associated with a vehicle; evaluate reflected image quality thresholds; locate and match occupants within the vehicle space; and perform eye tracking for multiple occupants independently via reflected multi-view images provided to a deep learning model.

The invention relates to the field of display driving control of input equipment, in particular to an electronic ink screen display control method of a keycap, which comprises the following steps of: firstly, inserting a sensing phase in a key domain, and constructing a state vector containing charge bias estimator, optical reflectance and temperature by utilizing opposite-polarity probe pulse, phase-locked demodulation and temperature measurement; then filtering fusion and sample-based temperature-related response parameter calibration are carried out, a Prantl-Ishlinskii hysteresis model is constructed, an equivalent dose target is obtained through analysis and inversion, and a charge bias target is set to be zero; solving a constraint optimization synthesis zero direct current vector waveform under zero direct current constraint and executing, and injecting a correction phase pair with opposite polarity when a judgment condition is not met; and summarizing execution records to calculate the total equivalent charge amount of the whole board, carrying out blocking and phase staggered scheduling based on optical deviation and charge bias, and carrying out online parameter back-writing. According to the invention, ghosting and flickering are reduced and long-term stability is improved.

The invention relates to the technical field of gas sensing and optical detection, in particular to an annular multi-pass absorption cell and a detection method thereof.The annular multi-pass absorption cell comprises a reflecting mirror, the reflecting mirror is a cylinder with the two ends open, and a reflecting film is arranged on the inner wall of the reflecting mirror to form a continuous annular optical reflecting surface; the end cover assemblies are arranged at the openings in the two ends of the reflecting mirror, and a closed gas cavity is defined by the end cover assemblies and the reflecting mirror; an incident light hole and an emergent light hole are formed in the cylinder wall of the reflecting mirror and are respectively used for guiding a detection light beam to enter and exit from the gas chamber. The cylindrical reflector with two open ends is adopted, and an annular optical reflecting surface is formed on the inner wall of the cylindrical reflector, so that complex optical paths of discrete components in a traditional absorption cell are integrated in a single structure, the innovative design remarkably improves the system integration level, effectively compresses the size, can realize a longer absorption optical path in a limited space, and improves the absorption efficiency. The sensitivity of gas detection is greatly improved.

The invention relates to the technical field of navigation system error correction, and discloses a multi-path error correction method in a Beidou navigation system, which comprises the following steps of: scanning through an environment perception sensor integrated with a navigation receiver to obtain three-dimensional space data of a surrounding environment of the navigation receiver; generating a set comprising a plurality of candidate paths according to the space reflection source model; establishing a sparse optimization model taking an observation matrix as a core through sparsity priori of a plurality of candidate path signals; solving the sparse optimization model, and identifying a real reflection path which forms dominant influence on the pseudo-range observation value; and a corrected pseudo-range observation value is obtained, and a final positioning result is calculated based on the corrected pseudo-range observation value and is fed back. According to the method, potential reflecting surfaces around a receiver are actively sensed and parameterized through an environment modeling and geometric path prediction mechanism based on three-dimensional space data, and the additional delays of all candidate reflecting paths are calculated according to the optical reflection law.

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.

Hybrid integrated photonic integrated circuit laser comprising a photonic integrated circuit including an elongated optical waveguide comprising an elongated gain medium waveguide, at least a first and second optical reflector, the gain medium waveguide being located or extending between the first and second optical reflectors and being located inside an optical cavity to provide optical feedback. Further comprising a pump laser diode to provide electromagnetic radiation to the gain medium waveguide. The elongated optical waveguide, and the first and second optical reflectors are monolithically integrated inside the photonic integrated circuit. The gain medium waveguide comprises a rare-earth ion implanted silicon nitride waveguide core. The pump laser diode is positioned adjacent to the at least one photonic integrated circuit and is edge coupled or facet coupled to a lateral edge or a facet of the photonic integrated circuit to provide pump radiation to the rare-earth ion implanted silicon nitride waveguide core.

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 provides an underwater target recognition method and system based on 4K visible light polarization imaging, and relates to the technical field of underwater target recognition.The application uses pixel-level registration RGB and polarization four-dimensional light field tensor encoding technology to synchronously capture high-resolution spectral intensity information and polarization physical characteristics of a target, overcomes the limitation of information loss of single modal data in low-light or high-turbidity scenes, designs polar coordinate symmetry of a ring-shaped direction-sensitive convolution kernel, combines polarization degree matrix decomposition technology of the Fresnel reflection law, accurately quantifies the optical reflection characteristic difference of a material, dynamically learns the correlation weight of spatial features and polarization features based on a cross-modal attention mechanism, strengthens the joint response of target edge contours and internal textures, adopts a lightweight recognition network architecture, integrates a polarization-sensitive convolution kernel and a dynamic channel reparameterization module, realizes parallel and efficient inference of target position, category and material information, and realizes accurate recognition of underwater targets.

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 invention belongs to the technical field of non-ferrous metal material preparation, and particularly relates to an AlMgSi optical reflector material and a preparation method and application thereof.The AlMgSi optical reflector material comprises, by weight, 0.4%-0.7% of Si, smaller than or equal to 0.08% of Fe, 0.15%-0.30% of Cu, 0.8%-1.1% of Mg, smaller than or equal to 0.01% of Cr, smaller than or equal to 0.001% of Ti and the balance Al and inevitable impurities; the preparation method of the AlMgSi optical reflector material comprises the following steps that soaking, extrusion forming, solid solution treatment and aging treatment are sequentially conducted on an AlMgSi alloy ingot, and the AlMgSi optical reflector material is obtained; the soaking temperature ranges from 480 DEG C to 520 DEG C, and the extrusion temperature of extrusion forming ranges from 300 DEG C to 350 DEG C; the AlMgSi optical reflector material disclosed by the invention has high hardness and low surface roughness at the same time.

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.

A single-material-double-process parametric laser-wavelength converter includes a pump-laser source, a nonlinear optical material, a first optical reflective element, and a second optical reflective element. The pump-laser source is configured to emit a pump-laser pulse light. The nonlinear optical material receives the pump-laser pulse and generates a signal-laser pulse and a partially depleted pump-laser pulse through optical parametric amplification. The first optical reflective element is configured to reflect the signal-laser pulse back to the same nonlinear optical material. The second optical reflective element is configured to reflect the partially depleted pump-laser pulse back to the same nonlinear optical material. With an appropriate adjustment on the reflecting path lengths, the nonlinear optical material is configured to receive the temporally synchronized signal-laser pulse and the partially depleted pump-laser pulse to generate an idler output through difference frequency generation. Both optical parametric amplification and difference frequency generation occur in the same nonlinear optical material.

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 invention discloses a method and device for detecting screen body defects of a flexible OLED screen and a storage medium. The method comprises the following steps: dividing a to-be-detected screen body into micro-units and collecting optical reflection signals of the micro-units; applying a controlled deformation stress to the micro-unit and collecting an optical signal under the stress; calculating a local response curve based on response characteristics and extracting characteristic parameters such as amplitude change, slope, peak value and nonlinear fluctuation; comparing the characteristic parameter with a healthy area reference to generate a first defect sensitivity parameter and a defect type; performing consistency analysis in combination with the characteristic parameters of the neighborhood micro-units to obtain second defect sensitivity parameters; inputting the micro-unit thickness, the interface characteristics and the second defect sensitivity into a pre-configured local WVTR model, and calculating a local WVTR value; and finally, combining the second defect sensitivity parameter to generate and output defect data. According to the method, through stress response and neighborhood consistency analysis and in combination with a local WVTR model, micro-unit-level defect accurate identification is realized.

The invention provides a rigid body calibration method based on an optical motion capture system in the field of optical motion capture. Comprising the following steps of management of a camera, adjustment of a correction camera, adjustment of a laser light source, room calibration and rigid body definition and calibration. Rigid body position information is measured and calculated according to the optical reflection principle of the optical motion capture system and is used for capturing and calibrating the rigid body; according to the optical reflection principle of the optical motion capture system, the rigid body configuration information is measured and calculated, and then the six-degree-of-freedom information of the rigid body is calculated through the control host, so that the rigid body is calibrated quickly and effectively. The imaging process of a camera is accurately simulated by adopting a pure optical method, and the relationship between a three-dimensional space imaging light beam and an image point is constructed, so that the correspondence between an image plane and a space angle vector is established, the inverse process of camera imaging is truly reflected and reproduced, the constraint of a specific space is broken through, and accurate calibration of a rigid body in an optical motion capture system is realized in principle. The rigid body calibration method based on the optical motion capture system is suitable for application.

The disclosure includes an optical metasurface with an optical reflector layer and a resonator layer. The resonator layer includes an array of optical resonators extending vertically with respect to the optical reflector layer. Each optical resonator may be formed by two stack-integrated metallic optical elements positioned adjacent to each other to create a gap. The stack-integrated metallic optical elements may include a base metallic optical element and one or more stacked metallic optical elements.

The utility model relates to teaching equipment technical field especially relates to an optical reflection experimental apparatus, include: bottom plate, be equipped with for fixing the stopper of reflector, limit seat limit block, top block and press spring on the bottom plate, reflector, the reflector is connected by hinged joint and is formed by two pieces of fan board, and two pieces of fan board can rotate oppositely, one end of one piece of fan board is fixed in limit seat, and the other end is fixed between stopper and top block, one end of another piece of fan board is detachably fixed between limit block and press spring, when press spring is pressed down, this fan board can rotate around hinged joint. The optical reflection experimental apparatus solves the limitation of traditional reflection experimental apparatus, and has the functionality, stability and easy use, and provides efficient and reliable experimental tool for optical teaching.

The invention 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. According to the method, the coordinate error of the wafer edge area is meticulously analyzed, the offset rate data is established, and the periodic deviation value is compared with the periodic deviation value in the probe switching process, so that the probe switching precision is remarkably improved, the analysis of temperature sensing and optical reflection data is optimized, and an accurate spectrogram layer difference labeling graph is obtained; through combination of the regional temperature difference fluctuation map and the optical error map, dynamic compensation is carried out on optical detection and temperature detection of the wafer, the wafer online detection effect is greatly improved, finer positioning and identification of wafer surface defects are realized, the overall precision and efficiency of wafer online detection are improved, the risk of missing detection and misjudgment of the defects is reduced, and the wafer online detection efficiency is improved. And the automation level and the accuracy of the detection result in the detection process of the production line are further optimized.

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.

A novel multi-camera optical reflection man-machine interaction touch display screen comprises a touch screen, a first sensor, a second sensor, an auxiliary sensor, a first light supplementing plate, a second light supplementing plate and an auxiliary light supplementing plate, and the first sensor and the second sensor are arranged corresponding to two diagonal positions of any edge of the touch screen. The first light supplementing plate corresponds to the first sensor, the second light supplementing plate corresponds to the second sensor, auxiliary sensors are arranged at other positions of the edge of the touch screen, and the auxiliary light supplementing plate corresponds to the auxiliary sensors. According to the optical touch device, the existing traditional touch installation and production process is simplified, the optical touch device is greatly friendly to a terminal user no matter in installation or in use, the optical touch device has more advantages compared with the traditional technology, the user can carry out man-machine interaction on the display device through simple installation, and the user experience is improved. A user can carry out man-machine interaction with the display equipment only by carrying out simple installation at any diagonal position.