28161 results about "Optics" patented technology

An optical physiological sensor configured to be secured to a user's nose includes a first prong configured to be positioned proximate an outside portion of the nose, a second prong configured to be positioned proximate an inside portion of the user's nose, a winged portion coupled to the first prong and configured to contact tissue of the user, one or more emitters configured to emit light of one or more wavelengths into the tissue, and one or more detectors configured to detect at least a portion of the light emitted from the one or more emitters after attenuation through at least a portion of the tissue. In some configurations, the winged portion comprises a width that is greater than a width of the second prong. In some configurations, at least a portion of the winged portion is curved toward the second prong.

The present disclosure provides a display substrate and a method of manufacturing the same, a display panel, and a display apparatus. The display substrate includes a base substrate, pixel units are arranged in an array on the base substrate, each pixel unit includes an anode, a light-emitting functional layer and a cathode, a pixel definition layer is provided, and has a plurality of openings, and each opening exposes a portion of an anode; the light-emitting functional layer is located in the opening; at least a portion of two opposite ends of the anode along a first direction is warped in a direction toward the cathode, an orthographic projection of the warped portion of the anode on the base substrate does not overlap with that of the cathode on the base substrate, and a hollow region is provided at a position of the cathode at least corresponding to the warped portion.

The present invention discloses a ceiling-mounted fan light and an assembly method therefor. The ceiling-mounted fan light includes a ceiling-mounted box, a fan installed on the ceiling box, some light arms detachably assembled to the ceiling box, an arc-shaped lamp bracket provided at an extended end of each light arm, and lamp brackets. A connecting member is arranged between the head end of one lamp bracket and the tail end of an adjacent lamp bracket, so that the lamp brackets and light arms can be disassembled and reassembled during packaging and transportation by separating them into individual components to reduce space, while also reducing molding costs. The corresponding lamp groove provided on a lower side and / or an upper side of the lamp bracket is mounted by light-transmitting strip respectively to enable diverse lighting effects.

An optical transceiver module and an optical cable module using the same are provided. The optical transceiver module: a substrate; at least one optical receiving device connected to the substrate; a plurality of optical transmitting devices connected to the substrate, wherein the optical transmitting devices comprise a plurality of first optical transmitting devices and a plurality of second optical transmitting devices, and the optical transmitting devices are misaligned to each other.

The invention relates to the technical field of image detection and quality assessment, and discloses an image-based cable stranded wire quality assessment method and system, and the method comprises the steps: obtaining an illumination reflection image set of a cable stranded wire through employing a multi-angle annular illumination imaging mode; constructing a multi-angle reflection image sequence; generating a defect suppression highlight image; carrying out image enhancement and three-dimensional normal estimation; and outputting a quality grade evaluation result. In the prior art, fine scratches, burrs and distortion defects are difficult to accurately identify under the condition of strong reflection interference, and particularly, high-resolution quality evaluation cannot be realized under the conditions of complex surface structure of a cable stranded wire and non-uniform illumination response. According to the method, the multi-angle illumination model and the angle domain sparse unmixing mechanism are constructed, and the defect enhancement driven by the normal disturbance and the multi-modal fusion classification are combined, so that the precise positioning and grade evaluation of the tiny defect area are realized, and the precision of the quality detection of the stranded cable is improved.

The invention provides an infrared weak and small target detection method based on an adaptive sparse attention mechanism, and the method comprises the steps: collecting an infrared weak and small target image, carrying out the pre-screening through a bright and dark target balance module, and generating an infrared weak and small target data set; an infrared weak and small target detection model is constructed, the infrared weak and small target detection model is trained by using the infrared weak and small target data set, a trained infrared weak and small target detection model is obtained, and the model comprises an infrared image enhancement module, a linear embedding layer, an adaptive sparse attention Transform network and a low-rank approximate global feature fusion module which are connected in sequence; and inputting an infrared weak and small target image to be detected into the trained infrared weak and small target detection model to obtain an infrared weak and small target detection result. According to the method, the problem of insufficient detection precision of an existing method is solved, the robustness, the applicability and the real-time performance are high, and the visual perception capability of an infrared sensor platform to the surrounding environment is enhanced.

A contact lens assembly includes a cup, a dry contact lens that is not for being worn on an eye, a sealing layer removably connected to the cup, and a wetting liquid supply. The sealing layer and the cup jointly form an enclosed space that receives the dry contact lens therein and that does not accommodate any liquid. After at least one of the sealing layer and the cup produces an opening, the cup can receive a wetting liquid from the wetting liquid supply through the opening, such that the dry contact lens is immersed in the wetting liquid to form a wet contact lens that is suitable for being worn on the eye and that has a water content greater than a water content of the dry contact lens.

The invention provides a cylindrical battery pole piece coating uniformity detection method based on machine vision, and relates to the technical field of machine vision, and the method comprises the steps: obtaining a multi-angle image, and carrying out the cylindrical surface expansion; carrying out polar coordinate gradient continuity analysis on the annular expanded image, extracting continuity characteristics of a seam, and adaptively adjusting light emitting parameters of the LED array to obtain an optimized image; coating edge contours, surface texture directivity and density distribution characteristics are extracted in a polar coordinate domain and a Cartesian coordinate domain, and a coating uniformity evaluation standard is established; and constructing a hierarchical feature fusion network comprising a polar coordinate attention module and a space attention module, carrying out adaptive weighted fusion on the annular features and the axial features, comparing a fusion result with theoretical coating uniformity distribution calculated based on coating process parameters, and outputting a detection result. According to the method, the accuracy and interpretability of coating uniformity detection of the cylindrical battery pole piece are improved, and a theoretical basis is provided for process optimization.

The invention provides a wide-angle scanning dual-circularly-polarized phased-array antenna unit, which belongs to the field of dual-circularly-polarized antennas and comprises a first dielectric layer, a second dielectric layer and a third dielectric layer which are sequentially stacked, the antenna radiator is arranged on the side, away from the second dielectric layer, of the first dielectric layer, the antenna radiator comprises four radiation patches, each radiation patch comprises a metal patch and a loading branch knot, and each metal patch is provided with a slotted structure; the first metal ground layer is clamped between the first dielectric layer and the second dielectric layer, and a cross coupling gap and a first coupling gap and a second coupling gap which are perpendicular to each other are formed in the first metal ground layer; the U-shaped feeder line is clamped between the second dielectric layer and the third dielectric layer, and two ends of the U-shaped feeder line are respectively connected with a coaxial feed column penetrating through the third dielectric layer; the second metal ground layer is arranged on the side, away from the second dielectric layer, of the third dielectric layer; an array is also provided; the problem that a traditional circularly polarized antenna is narrow in impedance bandwidth and limited in polarization is solved.

A display device includes a pixel emitting light based on input image data, an age data calculator configured to generate age data of a light emitting element included in the pixel in consideration of a power voltage supplied to the pixel, and a compensator configured to output age compensation data by determining a grayscale compensation value corresponding to an input grayscale of the input image data, based on the age data, and applying the grayscale compensation value to the input image data.

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate and a light shielding layer, wherein the light shielding layer comprises a light shielding structure, a first opening and a second opening; in the direction perpendicular to the plane where the substrate is located, the first openings are overlapped with the shared sub-pixels, and the second openings are overlapped with the peep-proof sub-pixels; the shared sub-pixel comprises a color resistance unit, and the color resistance unit is located in the first opening; the first opening comprises a first region and a second region, and the second region is located between the first region and the shading structure; and the thickness of the color resistance unit in the second area is smaller than that in the first area. According to the invention, the problem of low large-viewing-angle brightness in a shared state can be improved.

Provided herein are several embodiments of a dexterity tool for opening a contact lens package to remove a contact lens inside. Some embodiments may have a housing which clamps down on the contact lens package to aid in the removal of the lid from the contact lens package. Some embodiments may also have a top clamshell housing with a movable jaw connected to the top clamshell housing and an opening in the top clamshell housing. Some embodiments may also include a bottom clamshell housing hingedly attached to the top clamshell housing so that the top housing hinges about a hinge axis relative to the bottom housing and further contains a bowl positioned within the bottom clamshell housing and a platform surrounding the bowl. A fixed jaw may be connected to the platform such that when the tool is placed in a closed position the contact lens package is sandwiched in between the movable jaw and the fixed jaw.

The invention discloses an optical diffusion plate microstructure defect detection method, electronic equipment and a storage medium. The method comprises the following steps: acquiring images of the same diffusion plate area under at least two different illumination angles and performing elastic registration so as to eliminate image dislocation caused by plate movement; decoupling and separating physical defect features stably existing under all illumination and shadow interference features changing along with illumination from the registered image; carrying out enhancement and dynamic up-sampling processing on the physical defect features, and generating a suspected defect candidate region set with a low confidence threshold; for each candidate region, reconstructing a virtual reference image when the region has no defect through a generative model by utilizing the peripheral texture of the candidate region, and judging authenticity and outputting a confidence coefficient by comparing residual errors; and determining a final alarm result according to whether the confidence exceeds an alarm threshold. According to the invention, artifacts and real physical defects caused by mechanical micro-vibration and micro-structure reflection can be effectively distinguished, and the false alarm rate is obviously reduced.

The invention relates to the technical field of infrared thermal imaging, in particular to a human body analysis method and system based on an infrared thermal image. The method comprises the following steps: acquiring an infrared thermal image sequence of a limb to be detected in a thermal relaxation process; segmenting the image sequence, constructing a topological center line of an effective contour, and defining a heat flow reference direction based on the geometric width change of a cross section along the center line; a temperature gradient vector field is calculated, and an area with the gradient direction and the heat flow reference direction in reverse distribution and containing a closed isotherm is screened out to serve as a thermal topology abnormal area; establishing a biological heat transfer model taking the surface temperature as a boundary condition, performing inverse solution on the thermal topology abnormal region, and performing inverse calculation on a heat source parameter corresponding to the subcutaneous depth; and when the heat source parameter exceeds a threshold value, generating a damage early warning. According to the method, by quantifying metabolic heat abnormality caused by inflammation in tissues, accurate positioning and quantitative evaluation of deep injury of limbs are realized, and the accuracy of human injury detection is remarkably improved.

A backlight module for a lighting keyboard having a specific function key comprises a lighting board, a light guide panel and a shielding sheet. The shielding sheet, the light guide panel and the lighting board are stacked from top to bottom. The lighting board has first and second light emitting units. The light guide panel has first and second light guide holes. The first light emitting unit is in the first light guide hole. The second light emitting unit is in the second light guide hole. The shielding sheet has a blocking portion. The blocking portion overlaps in projection with the first light emitting unit and the second light emitting unit. The light guide panel has a light guide panel slot. The light guide panel slot overlaps in projection with the blocking portion and a boundary of a keycap projection area of the specific function key.

The invention discloses a lightweight optical flow neural network method for river velocity measurement, and the method comprises the steps: collecting a dynamic monitoring image of a water area surface flow field, calculating an approximate optical flow field through combining with a DeepFlow optical flow algorithm, and generating an optical flow label; an improved lightweight ConvFFN-Flow optical flow estimation model is built, and the model comprises a feature extraction module, a 4D related structure body module, a GRU optical flow residual error iteration module and an up-sampling module; by introducing a ConvFFN module, the model parameter scale and the calculation amount are reduced, and the optical flow prediction precision is kept; and based on pixel coordinates of front and rear frames of images of the optical flow field data, obtaining corresponding positions in a real three-dimensional space, calculating an actual displacement amount, and deducing to obtain a real flow velocity vector size and a flow direction of the water body surface. The method still has stable and high-precision optical flow estimation capability when being used for processing scenes such as fine river water surface texture and complex flow state change, and meanwhile, the calculation overhead and the storage demand are remarkably reduced.

The invention belongs to the field of crop yield estimation, and discloses a corn yield remote sensing estimation method and system based on multispectral data coupling radiation transmission and a crop growth model, and the method comprises the steps: obtaining and preprocessing a Sentinel-2 multispectral remote sensing image, and obtaining the reflectivity data of a corn planting region; constructing a PROSAIL forward simulation spectrum library, and performing domain correction on the simulation spectrum by using an auto-encoder and a residual error alignment network; establishing a machine learning inversion model based on the corrected simulated spectrum and the actually measured spectrum, and generating regional leaf area index (LAI) distribution; key agronomic parameters are obtained, a localized WOFOST crop growth model is constructed, the LAI state of the model is assimilated by adopting ensemble Kalman filtering at a remote sensing observation moment, and the crop growth process is dynamically corrected; and advancing the model to a mature period, outputting the dry weight of the corn kernels, and realizing remote sensing estimation of the regional corn yield. The method can effectively improve the LAI inversion precision and yield prediction reliability, and is suitable for the fields of agricultural monitoring, grain evaluation, agricultural condition management and the like.

The invention discloses an optical lens coating defect detection method based on image detection, and relates to the technical field of image processing, and the method comprises the steps: collecting a multi-illumination multi-band reflection image of a lens, carrying out dark white field and distortion correction to form a correction image, carrying out the segmentation and pose solving of the correction image, then carrying out the curved surface expansion remapping, and carrying out the image processing. A reflection observation sequence is formed according to channel stacking, a judgment threshold value is calculated based on the white field image and the dark field image, and pixel positions meeting the judgment threshold value are marked as low credibility and converged to generate a quality mask; coating reflection representation fitting is carried out on the reflection observation sequence, binary weighting is carried out according to a quality mask, range and continuity checking is carried out on a fitting result to obtain a credible mark, and an ideal reflection response is synthesized according to the credible mark. According to the method, ideal reflection response and residual error construction are performed on the reflection observation sequence, so that separation characterization of imaging disturbance and real coating abnormality is realized.

The invention belongs to the technical field of thin plate laser welding, and particularly relates to a curved-surface thin plate laser welding device which comprises a welding base. A first supporting frame is arranged on the welding base. The upper fixing base and the lower fixing base are matched with a plurality of short rods to adaptively clamp different types of curved-surface thin plates, and are matched with two laser welding heads to perform double-sided welding, so that the effect of performing counterpoint double-sided laser welding on the different types of curved-surface thin plates is achieved, traditional laser equipment which is difficult to perform double-sided counterpoint welding on the curved-surface thin plates is replaced, and the production efficiency is improved. The multiple short rods on the upper fixing base and the lower fixing base can conduct adaptive clamping according to the curved surface shapes of the thin plates, the welding precision and stability are improved, welding deviation caused by the irregular curved surface shapes of the thin plates is avoided, the two oppositely-arranged laser welding heads can flexibly move to the upper and lower opposite seams of the two curved surface thin plates, and the welding quality is improved. And laser double-face simultaneous welding is achieved, the welding efficiency is improved, a welded joint is firmer, and the overall welding quality is improved.

The invention relates to the technical field of radar reflectivity factor calibration, and discloses a terahertz cloud measurement radar calibration method based on channel perception, which comprises the following steps: S1, acquiring two types of input data; s2, constructing a multi-scale channel model; s3, constructing a distance error estimation model; s4, constructing a dynamic time correction model; and S5, constructing a calibration module. According to the method, a high-precision physical channel model is constructed to independently predict path attenuation of signals, the concepts of gain deviation and path attenuation factors are put forward, the influence of thermal noise attenuated by radar on radar waves in the atmospheric environment is reflected respectively, and a Kalman filtering algorithm is used to estimate the path attenuation of the signals. And filtering errors generated in the time direction, and finally, calibrating the radar reflectivity factor by using the channel data by means of a calibration formula.

Methods for detecting diffusing particles are provided which comprise introducing a sample comprising a diffusing particle to an optical microcavity; coupling probe light into the optical microcavity such that the probe light is in resonance with the optical microcavity, wherein the diffusing particle diffuses into an optical mode volume defined by the coupled probe light; and detecting output light from the optical microcavity as a function of time while maintaining resonance, wherein the diffusing particle generates a change the detected output light. Systems for carrying out the methods are also provided.

The invention relates to the technical field of road engineering detection, in particular to a road disease recognition method and system based on electromagnetic waves and photographic imaging, and the method comprises the steps: firstly obtaining electromagnetic wave detection data and photographic imaging data of a road region, then synchronously detecting the distribution position and thickness of a road thin water film, generating a rasterized water film feature map, and finally obtaining a road disease recognition result. Then, according to the water film characteristic pattern, dynamically correcting bimodal data interference, adjusting a reflected wave amplitude value and a time domain delay parameter for electromagnetic wave detection data, compensating a gray difference and an edge gradient value for photographic imaging data by applying a local reflection suppression algorithm, and finally, fusing the corrected data and associating the state of the water film characteristic pattern to eliminate coupling misjudgment. The system comprises a data acquisition unit, a water film detection unit, a double-domain correction unit and a fusion decision unit, the problem of insufficient identification precision caused by a thin water film is solved, the road disease identification precision is improved, and a reliable basis is provided for road maintenance.

The invention is suitable for the photovoltaic technical field, and provides a photovoltaic cell, a cell assembly and a photovoltaic system, the photovoltaic cell comprises a semiconductor substrate, a first polarity doping layer and a second polarity doping layer; the back surface of the semiconductor substrate comprises a plurality of doped regions, the doped regions comprise first regions and second regions, the first regions and the second regions are alternately arranged, the first regions and the second regions are connected through connecting regions, first polarity doped layers are stacked on the first regions, and second polarity doped layers are stacked on the second regions; the first polarity doping layer and the second polarity doping layer in at least part of the connection area are in composite contact to form a composite contact area; the absolute value of the difference between the reflectivity of the connection region and the reflectivity of the doped region is greater than 0.05%. Connection areas form composite contact, the problem of hot spots is solved, meanwhile, damage to the battery piece caused by additional machining is avoided, the production cost can be reduced, and meanwhile the recognition accuracy and efficiency of a machine vision system on the photovoltaic battery can be guaranteed.

The invention provides a three-order angular distance extraction-based emulsified asphalt polymer distribution uniformity evaluation method, which comprises the following steps of: acquiring a fluorescent microphotograph of an emulsified asphalt polymer modified sample, carrying out RGB three-channel separation, constructing a joint probability matrix with a gray vector on polar coordinates, and simultaneously carrying out normalization processing; and further calculating a first-order angular moment, a second-order angular moment and a third-order angular moment of the fluorescent microscopic image of the emulsified asphalt polymer modified sample according to the joint probability matrix of the gray vector, and evaluating the distribution uniformity of the polymer in the emulsified asphalt matrix. The method can accurately quantify the distribution uniformity of the polymer in the emulsified asphalt, is small in test sampling amount and high in test speed, can be widely applied to quality detection of the emulsified asphalt in road engineering construction and maintenance, and provides an effective technical means for improving the modification effect of the polymer of the emulsified asphalt and guiding optimization of a preparation process of the emulsified asphalt.

The invention relates to the technical field of spinning quality detection, and discloses a jute spinning product quality detection method and system based on an intelligent sensor. The method comprises the following steps: acquiring real-time process parameters of a jute spinning production line, and synchronously capturing yarn surface temperature field distribution in combination with an infrared thermal imager; performing space-time alignment processing on the yarn tension fluctuation data and the temperature field distribution to generate a fused dynamic process characteristic matrix; according to the tension gradient change rate and the temperature field abnormal region coordinates in the dynamic process characteristic matrix, dividing potential occurrence sections of yarn quality defects; a microstructure image of the yarn in the potential generation section is extracted, a fiber arrangement angle deviation value is measured through a polarized light interferometer, and fiber molecular bond vibration frequency data is obtained in combination with a Raman spectrometer; and inputting the fiber arrangement angle deviation value and the molecular bond vibration frequency data into a cascade quality analysis model, and outputting a quantitative index set of the internal structure defects of the yarns.

In the field of photovoltaic power generation, a solar cell and a solar cell module capable of improving photoelectric conversion efficiency are provided. [Solution] The solar cell has a first surface and a second surface arranged back to back, and the first surface has first and second regions arranged alternately, and the second region includes a substrate having a groove formed in it relative to the first region, a passivation contact structure located in the first region, a passivation layer covering the surface of the passivation contact structure and the inner wall surface of the groove, and a first electrode located on the passivation layer and electrically connected to the passivation contact structure, and the side of the groove or the side of the passivation contact structure has a recess that is recessed inward along a first direction that is the direction from the second region to the first region, and the recess includes a continuous first side surface and a second side surface, the first side surface is connected to the first region, and the angle between the first side surface and the second side surface is a first obtuse angle.

The invention provides a film thickness deviation measuring technology and a film manufacturing technology, which can acquire information of film thickness deviation of a film in a non-contact manner through a simple and safe device structure. Provided is a film thickness deviation measurement method for a film, in which a film to be measured is used as an object to be measured, a preset background image can be captured by an imaging means, and a reference image can be acquired. The reference image is an image obtained by capturing a background image by means of an imaging means in a state in which an object to be measured is not sandwiched, or an image obtained by calculating and deriving a visual representation based on the imaging means of the background image in a state in which the object to be measured is not sandwiched. The measurement image is an image in which the object to be measured is sandwiched between the background image and the imaging means and the background image is captured by the imaging means, and the amount of displacement of the background image in the two images is calculated on the basis of the acquired reference image and the measurement image, thereby obtaining the film thickness deviation of the object to be measured.

The invention relates to the technical field of high-pressure precise physical experiments, in particular to an irradiation sample table. A to-be-tested sample is placed on the sample table, and the second gland and the first gland are detachably connected to the sample table in sequence, so that the holes in the first gland and the second gland correspond to the to-be-tested sample. The size of the hole is smaller than the diameter of the to-be-detected sample, so that the radiation area is smaller than the diameter of the to-be-detected sample; moreover, the second gland is a ceramic gland and has good insulation performance, so that the situation that plasma directly bombards a sample table to generate an edge effect during irradiation, and adverse effects on judgment and separation of real particle flow density distribution borne by the surface of the to-be-detected sample are generated can be avoided. When samples of different sizes need to be replaced, only the first gland and the second gland which are provided with the open holes matched with the samples in size need to be replaced, operation is easy and fast, cost is low, and the experiment continuity and efficiency cannot be affected.

The invention relates to the technical field of gas detection, and relates to an optimization method and system for SF6 gas detection in a multi-temperature environment, and the optimization method comprises the steps: obtaining dual-band infrared images of a scene to be detected at the same time, the dual-band infrared images comprising a detection band infrared image and a reference band infrared image; preprocessing the dual-band infrared image; performing registration processing on the preprocessed dual-band infrared image; performing differential operation on the registered dual-band infrared image to obtain a differential image; and determining a dynamic segmentation threshold according to the current environment temperature, and performing threshold segmentation on the differential image according to the dynamic segmentation threshold so as to identify the SF6 gas leakage area. According to the optimization method and the optimization system, the dynamic segmentation threshold value is determined according to the current environment temperature, the problem that the detection performance of a fixed threshold value is reduced due to background radiation changes at different environment temperatures can be solved, and stable and reliable detection sensitivity can be kept within a wide temperature range.

The invention provides an optical aiming device with a variable aiming point. The optical aiming equipment comprises a transmission screen arranged at the first end of the optical aiming device, and a display device arranged at the second end of the optical aiming device, and a projection module configured to project a first pattern individually or simultaneously on the transmissive screen, the first pattern and a second pattern. Wherein the first pattern and the second pattern have different shapes; the first pattern is provided with a geometric center, and the second pattern surrounds the first pattern outwards in the radial direction from the geometric center.