221 results about "Optical observation" patented technology

The invention relates to the technical field of spacecraft orbit control and space safety, and discloses a space debris orbit prediction and avoidance method, which comprises the following steps that: a ground computing center screens candidate targets and generates enhanced data packets for uploading; the spaceborne computer combines real-time navigation data to carry out geometric feature screening, and an instant high-risk target list is generated; controlling the star sensor to execute optical observation, and resolving an optical measurement relative orbit state by utilizing displacement superposition and Kalman filtering; selecting a high confidence coefficient or a conservative probability threshold according to the optical measurement state acquisition condition, and generating an avoidance instruction when the collision probability exceeds the limit; and the propulsion system responds to the instruction to execute avoidance, verifies the effect by confirming the semi-major axis variation and executes track recovery by selecting an aircraft. According to the method, the ground-air collaborative screening and shift superposition enhancement technology is adopted, the problems that the low-precision ephemeris false alarm rate is high and the detection capability of a satellite-borne sensor on a dark and weak target is insufficient are solved, and the accuracy of evasion decision making and the execution reliability are improved.

An imaging device for capturing images through an eyepiece of an optical viewing device. The imaging device includes a camera that aligns with the eyepiece for capturing the images viewed through the eyepiece, and a display for displaying the images captured by the camera. The imaging device determines a type of the optical viewing device. The imaging device presents a workflow on the display based on the type of the optical viewing device. The imaging device captures metrics related to user interactions with the workflow presented on the display and the images captured by the camera during the workflow.

The invention provides a comprehensive photoelectric platform method and system for unmanned aerial vehicle detection, electronic equipment and a storage medium, and relates to the technical field of unmanned aerial vehicle detection and localization. Synchronously triggering a photoelectric platform to capture a suspicious airspace high-definition video stream and establishing a space-time corresponding database of the two; synchronizing each radio frequency receiving node by taking a high-precision atomic clock as a time reference, and processing multiple paths of signal data to obtain a time-aligned basic signal; basic signal radio frequency features are extracted and associated with equipment identification, a mapping relation between the basic signal radio frequency features and remote controller models is established, and a hardware feature library is constructed; and finally, in combination with the library identification result, the signal time difference and the optical data, correcting a multipath error by using particle filtering, predicting and updating the position of an operator, and realizing comprehensive detection and positioning of the unmanned aerial vehicle after iterative convergence, thereby realizing comprehensive detection and positioning of the unmanned aerial vehicle in combination with radio frequency detection and optical observation.

The invention provides an objective lens system and optical observation equipment. The objective lens system comprises a fourth lens with positive focal power, a third lens with positive focal power, a second lens with negative focal power and a first lens with positive focal power which are sequentially arranged on the same optical axis from the object side; the first lens and the third lens are biconvex lenses, the second lens is a biconcave lens, the fourth lens is a balsaming lens, and the image side surface of the fourth lens is a convex surface; the focal length f of the objective lens system and the focal length f1 of the first lens satisfy the relationship. According to the invention, during assembly, the tolerance requirement is low, installation and adjustment are more facilitated, the field of view is larger, the vignetting is smaller, the number of lenses is smaller, and the cost performance is higher.

The invention provides a transparent bulletproof ceramic composite structure with an electric heating function and a preparation method of the transparent bulletproof ceramic composite structure. The composite structure comprises an anti-splashing layer (1), a first middle layer film (2), a multi-layer stacked structure (3) of glass sheets and films, a first transition layer (4), an electric heating film layer (5), a second transition layer (6), a ceramic layer (7), a first antireflection film layer (8), a second antireflection film layer (9), a third antireflection film layer (10), a second middle layer film (11), an inorganic glass layer (12), a third transition layer (13) and an anti-static layer (14) which are arranged in sequence. The composite structure provided by the invention has excellent impact resistance and bulletproof grade, can effectively resist the damage of high-speed elastic sheets or impact objects, and meets the requirements of high-safety application scenes such as weapon armors, armed airplanes and high-speed trains; and the anti-static film has clear optical observation capability, high transmissivity and anti-static property.

The invention discloses a method for carrying out correlation and orbit determination on a space target based on a double-star optical observation result, and the method comprises the steps: obtaining the observation vectors of two observation stars for a certain space target in the respective visual fields, calculating the shortest distance between the observation vectors, and if the distance is always smaller than a threshold value in a time sequence, determining that the space target does not exist. And if not, determining that the two observation stars observe the same space target, calculating a midpoint of two observation vector common vertical lines of the same space target by the two observation stars as an orbit determination point, and performing orbit determination on the space target based on an orbit determination point sequence. According to the method, a low-cost space-based optical orbit determination mode is adopted, space target association is completed through an algorithm with low calculation cost, target consistency is judged based on observation vector distance constraints, a complex model or a large amount of calculation power is not needed, efficient processing can still be performed when the number of targets is large and the data size is large, and the cost and efficiency advantages are remarkable.

The invention discloses a dust explosion flame free radical testing system and a testing method, belongs to the technical field of dust explosion testing, and solves the problem that existing testing equipment cannot realize visual testing of combustion flame free radicals at the initial stage of dust explosion ignition and in the development process. According to the solution, the test system comprises an explosion generation assembly used for generating single-side open type dust cloud explosion, an optical observation assembly used for observing flame free radicals, a control system, a computer and an air compressor, and semi-open type dust cloud is formed through the explosion generation assembly and is ignited and detonated; images of different free radicals changing along with flame are collected through the optical observation assembly, and visual observation, recording and analysis are carried out through the computer. The system has the advantages of being high in functionality, integrated in system, easy to operate and safe and reliable in experiment process and is suitable for various kinds of combustible dust, collected data can promote dust explosion mechanism research, and data support is provided for development of dust explosion optical early warning protection measures.

The invention discloses a point cloud intersection-based space target optical segmental arc rapid association method. The method comprises the following steps: 1, acquiring optical segmental arc data and constructing a constraint admissible domain; 2, generating a track point cloud; 3, forecasting parallel orbit point cloud; 4, fast point cloud intersection is carried out; and 5, determining an initial orbit based on point cloud intersection. Through the above process, the space target rapid segmental arc correlation method based on point cloud intersection is provided, an admissible domain is constructed by two optical observation segmental arcs and orbit point clouds are generated, and then the point clouds of the two segmental arcs are forecasted to the same moment through a parallel orbit point cloud forecasting technology. Quickly locking an overlapping region of the two point clouds by adopting a minimum bounding box method, and judging the relevance between the point clouds through a mahalanobis distance; and finally, based on the Bayesian estimation principle, carrying out initial orbit determination on the successfully associated arc segments.

A diagnostic device with an improved optical system is disclosed. The disclosed in vitro diagnostic device has a housing with an inner bottom surface having an arc shape that rises upward from one side where the light source is arranged to the other side where the cartridge sensing surface is arranged. This device may include light sources with different wavelengths arranged on one side of the lower housing. Additionally, it may include an upper housing that is coupled to the upper surface of the lower housing and has a cartridge insertion space for a cartridge with a plurality of wells. The upper housing includes an observation window that covers at least the plurality of sensing hole areas to allow optical observation of the inside of the wells.

The invention discloses a sunshading and demisting system matched with an optical observation instrument. The sunshading and demisting system comprises two supports; the first framework, the second framework and the third framework are rotationally connected between the two brackets, are in semi-arc shapes and rotate in corresponding shaft holes of the brackets; a fourth framework, a fifth framework and a sixth framework which are the same are arranged at positions symmetrical to the first framework, the second framework and the third framework and are rotationally connected between the two brackets; the innermost first framework and the innermost fourth framework serve as active frameworks, and driving shafts are additionally arranged on the innermost first framework and the innermost fourth framework close to the root of the support and used for being in shaft connection with push rods of the stepping motors respectively; the two stepping motors are connected to the corresponding supports through shafts respectively. The two pieces of foldable sunshade cloth are respectively fixed on the frameworks on the two sides; the controller is electrically connected to the stepping motor and used for controlling the first framework and the fourth framework to rotate so as to unfold or fold the sunshade cloth; the air heater is electrically connected with the controller and used for supplying hot air into the skylight of the optical observation instrument through the air pipe.

Provided in the present application is a culture apparatus. The culture apparatus comprises: a housing, inside which a closed culture space is formed, the direction from one end of the housing to the other end thereof being defined as a first direction. In the culture space, assemblies are provided in sequence in the first direction: a first assembly, which comprises a light source and a gas supply assembly, the gas supply assembly being configured to provide a gas required by the culture space; and an optical observation assembly, which comprises a shell and a functional portion, the functional portion being arranged inside the shell. A light path structure is provided by the culture apparatus, and by means of the light path structure, a light beam is emitted from the light source, penetrates cultured specimen and a light-transmitting area of the shell, and is received by the functional portion, such that an observation image of the cultured specimen is formed and the observed image is outputted.

This invention discloses a method, system, and fluorescent mixed-spray device for detecting and evaluating inclined roadways in open-pit mines. The method includes: performing fluorescent material spraying and optical observation in at least two boreholes along the target exploration line; determining the spatial connectivity of roadway cavities between boreholes based on the observation results; acquiring roadway profile area data perpendicular to the exploration line at each borehole location for roadway sections determined to be connected; calculating a quantitative index characterizing the degree of profile morphology change based on the profile area data; and adaptively selecting a corresponding volume calculation model to calculate the volume of the roadway cavity based on a comparison of the quantitative index with a preset threshold. This invention combines rapid qualitative assessment of spatial connectivity based on fluorescence with accurate adaptive volume calculation based on morphological variation coefficients, using a single integrated technical process to simultaneously solve the problems of high exploration costs and low calculation accuracy in traditional methods.

The invention discloses an optical observation correlation method based on mixed multi-hour ephemeris, and belongs to the technical field of space target monitoring. Aiming at the problem that the correlation performance is reduced when the ephemeris quality is unstable due to dependence on a single ephemeris in the prior art, the method comprises the following steps of: firstly, constructing a mixed set containing multi-source ephemeris; secondly, intelligently selecting a leading ephemeris and a lagging ephemeris which are closest in time for each observation arc section and each target; then, the two ephemeris are used for association respectively, and union sets of results are obtained, so that an initial association set is expanded; and for the generated fuzzy correlation, performing primary disambiguation based on the comprehensive confidence, and performing secondary accurate disambiguation on the residual fuzzy condition by comparing the weighted angular distance residual error root-mean-square value of the whole arc section. According to the method, the dependence on single-term and single-source ephemeris precision is effectively reduced, available information is fully utilized, and the correlation robustness and accuracy of optical observation data under the complex ephemeris condition are remarkably improved.

The invention discloses a single-particle electrode material rate capability characterization method based on optical imaging. Comprising the following steps: constructing an electrochemical test configuration allowing optical observation, executing constant-current charging and discharging under a controlled magnification, synchronously acquiring optical data, defining characterization parameters related to the magnification based on the optical data, and evaluating the magnification performance of the single-particle electrode material. According to the method, the real-time response of the particles in the charging and discharging process is obtained through optical imaging, quantitative analysis of the magnification response under the single particle scale is achieved, the problem of particle behavior averaging in a macroscopic test is solved, and the accuracy and the resolution capacity of material performance evaluation are improved. The method is easy and convenient to operate, high in testing efficiency and suitable for high-throughput and high-spatial-resolution characterization of the rate performance of the electrode material.

The invention discloses a crystal growth synthesis furnace which comprises a composite furnace body, a heating and temperature control system, an optical observation window assembly and a growth monitoring and control system. A furnace chamber of the composite furnace body is of a multi-layer gradient composite lining structure composed of a pressure-bearing water-cooled jacket, a carbon fiber reinforced silicon carbide composite material layer, a foam silicon carbide ceramic heat insulation layer and high-purity graphite paper. The heating and temperature control system adopts a distributed design and comprises a main heater, an upper auxiliary heating ring, a lower auxiliary heating disc and a lateral compensation heater. The optical observation window assembly is fixed to the center of the upper furnace cover and matched with the high-speed imaging unit to achieve in-situ monitoring of the growth process. According to the crystal growth synthesis furnace provided by the invention, accurate regulation and control of a three-dimensional temperature field and real-time visual monitoring of a growth interface in a silicon carbide crystal growth process are realized, and the crystal quality, the growth success rate and the process repeatability are remarkably improved.

The present invention discloses a method and system for reconstructing optical images with high spatiotemporal resolution based on the fusion of multi-source remote sensing data, aiming to solve the problem of missing spatiotemporal information of optical remote sensing images due to cloud cover, sensor failure and the like in the prior art. The method is as follows: 1. Acquisition, preprocessing and data pair construction of multi-source remote sensing data. 2. Constructing and training an optical image reconstruction model, the model comprising a generator that receives multi-source data as input and a discriminator. 3. Reconstructing optical images of missing phases using the trained generator to generate a complete continuous optical image time series with high spatiotemporal resolution. The present invention can effectively fill in the gaps in optical image data, and the generated images have high spatial and spectral accuracy. It can effectively process data of different resolutions and reduce the influence of geometric registration errors through a multi-input network structure, providing reliable data guarantee for remote sensing applications that rely on continuous optical observations.

A system (100) for treating stress urinary incontinence in a patient includes a cystoscope (102) including a probe assembly (104) with a shaft (110) having a tip, an optical element (112) for capturing images, a display (118) or optical viewer for presenting the images; a rotatable sheath (400) with a shaft and at least one lumen configured to receive the cystoscope shaft, the sheath being rotatable about the cystoscope shaft: and a treatment needle (500) insertable through the sheath, the needle configured to inject a treatment agent into tissue, wherein the treatment agent comprises a non-animal stabilized hyaluronic acid.

The present application relates to a kind of calibration device and calibration method of shock wave overpressure optical measurement system based on shock tube, it is related to the field of shock wave overpressure test, wherein the calibration device includes: standard shock tube, visible measuring unit;Visible measuring unit includes: transparent quartz tube, first piezoelectric sensor, second piezoelectric sensor, third piezoelectric sensor;Transparent quartz tube one end opening, the other end is closed and is arranged;In the direction from the opening end of transparent quartz tube to closed end, first piezoelectric sensor and second piezoelectric sensor have interval and are embedded in the side wall of transparent quartz tube;Third piezoelectric sensor is embedded in the center of the closed end of transparent quartz tube.This scheme can simply, reliably produce theoretical solvable or accurately measured impact wave overpressure of various shock waves propagation process, can accurately and reliably cross-verify and error determination to the impact wave overpressure obtained in optical measurement process, can accurately calibrate the system error of optical observation wave front propagation process.

The invention relates to an imaging device (10; 110), in particular an endoscope device, for stereoscopic image generation, wherein the imaging device (10; 110) has a shaft (12; 112) that defines a longitudinal axis (14; 114) and at least one optical viewing direction unit (58, 158) for generating a viewing angle (18) of greater than 0° with respect to the longitudinal axis (14; 114).It is proposed that the imaging device (10; 110) has a periscope unit (20; 120) for combining at least two beam paths (22, 24; 122, 124) for use in stereoscopic image generation, wherein the viewing direction unit (58, 158) is rotationally fixed with respect to the shaft (12; 112) and the periscope unit (20; 120) is arranged so as to be rotatable relative to the shaft (12; 112) about the longitudinal axis (14; 114).

The invention provides an optical aiming division precision adjusting mechanism in an optical-mechanical system, relates to the field of optical aiming, and aims to solve the technical problems that a division piece adjusting mechanism in an aiming device is complex and difficult to miniaturize. The optical aiming division precision adjusting mechanism in the optical-mechanical system comprises a barrel, a division piece, a base and at least one adjusting mechanism, the division piece is arranged in the barrel, and the barrel and the adjusting mechanism are both arranged on the base; the adjusting mechanism comprises a force applying structure, and an elastic piece and an adjusting rod which are respectively positioned on two opposite sides of the dividing piece, and the force applying structure is used for enabling the adjusting rod to move in a preset direction; wherein the preset direction refers to the axial direction of the adjusting rod; the elastic piece is arranged between the dividing piece and the inner wall of the barrel, one end of the adjusting rod abuts against the dividing piece, and the other end of the adjusting rod penetrates through the barrel and the base to be connected with the force application structure. According to the optical aiming division precise adjustment mechanism in the optical-mechanical system, the adjustment accuracy and compactness of the division piece are improved.

The application discloses a long-distance rail recognition and obstacle detection method and system, a long-focus optical system is combined with a super-high-speed industrial camera on a hardware level to build a high-frame-rate and long-distance optical detection system, a region of interest for obstacle detection is demarcated by recognizing and visually segmenting left and right rail lines on a software level, and a target detection-based track obstacle intrusion detection algorithm and other advanced visual tasks are executed, and finally high-frame-rate recognition and detection of long-distance rails and track obstacles are realized. The Schmidt-Cassegrain optical system with a focal length of 2000mm is combined with a super-high-speed industrial camera with a resolution of 1920*1080 and 3000 frames per second to build a long-distance high-frame-rate optical detection platform and erect on a driving position of a train, railway conditions within a range of 6km are detected in real time, and serious accidents caused by a too long braking distance of the train due to high-speed driving can be prevented. Compared with traditional train driver eye observation and laser radar scanning imaging modes, a long-distance optical observation platform and a rear-end real-time detection system can realize a longer detection distance, better detection and recognition robustness and a higher frame rate.

The invention discloses a free forging online size detection and feedback method and system based on visual perception, and relates to the technical field of free forging machining detection, and the method comprises the steps: obtaining first image data, thermal field data and optical observation data corresponding to a target forging; generating offset data representing an expected displacement vector of each pixel point in the first image data according to a mapping relation between the thermal field data and a preset refractive index; calculating optical observation residual data according to the optical observation data and the offset data; whether the mean square value of the optical observation residual data exceeds a preset mean square threshold value or not is judged, and if yes, the refractive index mapping relation is corrected, and offset data are regenerated; performing reverse correction on the first image data according to the offset data to obtain second image data; extracting forge piece size data of the target forge piece according to the second image data and judging whether a feedback instruction is generated or not; the method has the beneficial effect that the optical measurement precision in a high-temperature free forging machining environment can be improved.

The invention discloses a device and a method for evaluating the color of a photochromic material. The device comprises a movable sample fixing frame for controlling the distance from a sample to a light source; the illumination light source is used for controlling the illumination brightness and angle; and the movable optical observation equipment is used for recording the color changing and fading processes of the photochromic material at different distances. According to the invention, the color development characteristics of the photochromic material under the conditions of light sources with different color temperatures and illumination with different intensities can be tested without the interference of the excitation light source of the photochromic material.

A method for associating optical arc segments of space targets based on control metrics is proposed. The steps are as follows: 1. Obtain optical arc segment data and construct a constrained admissible domain; 2. Obtain an initial orbit guess; 3. Iteratively calculate the control metric value; 4. Calculate the control metric threshold; 5. Determine the type of association between the two arc segments. Through the above process, a method for associating optical arc segments of space targets based on control metrics is proposed. The initial values ​​of the two observation arc segments are obtained through the admissible domain. The actual control metric value and the relevant threshold are then iteratively calculated to determine the association between the two arc segments. Starting from the perspective of optimal control, this method adopts a high-precision dynamic model and can achieve accurate association and fine classification of optical observation arc segments of low-orbit space targets and maneuverable spacecraft.

This invention relates to the field of agricultural monitoring and discloses a method and system for reconstructing NDVI time-series data. The method includes: collecting Sentinel-1 SAR data, Sentinel-2 optical data, and initial NDVI time-series data of a target area; performing time node matching on the data to obtain an initial dataset; inputting the initial dataset into a trained Transformer-based time-series data reconstruction network, performing deep coupling between the Sentinel-1 SAR data and the Sentinel-2 optical data, and mapping the coupling result to the initial NDVI time-series data to reconstruct the NDVI time-series data. This invention enhances the learning between SAR and optical data, constructs the relationship between complete SAR data and missing optical data, and maps the contextual information of the coupling result to the initial NDVI time-series data to reconstruct the NDVI time-series data, filling the gaps in optical observation data and obtaining high-precision and complete NDVI time-series data.

A slide fastener comprising: opposing rows of interlockable fastener elements; and a slider (1) comprising an optical viewer disposed so as to present, in use, a view of a portion of the slide fastener proximate the slider. The optical viewer may be an optical magnifier. The slider may further comprise a source of illumination to illuminate, in use, the portion of the slide fastener presented by the optical viewer. A dynamo (13) may be integrated within the slider, to power the source of illumination.

The invention discloses a satellite position real-time resolving platform and method based on multi-source data fusion, and relates to the technical field of satellite position resolving, the platform comprises a multi-source data access and time reference module, a real-time resolving engine module, a rendering and interaction module and an event bus and auditing module, the multi-source data access and time reference module carries out timestamp labeling and quality rating on two rows of element data, radar observation data, optical observation data and global navigation satellite system broadcast data, and the real-time resolving engine module generates a resolving result containing confidence coefficient parameters and check metadata based on an incremental fusion algorithm. According to the method, unified fusion of multi-source data and verifiability of the resolving process are achieved, and the precision and reliability of satellite position resolving are improved.

The application discloses a kind of plasma etching equipment and observation window protection system, belong to semiconductor manufacturing equipment technical field.The system includes reaction cavity, gas inlet pipeline, optical observation window and uniform gas structure, by innovatively using uniform gas structure, with uniform flow and radio frequency suppression function, under the guarantee gas flow function, effectively block plasma into pipeline, and by optical observation window is set at the end of gas inlet pipeline, realize light gas same road, to directly utilize process gas and pass through the inner surface of window to form protection gas curtain, effectively prevent deposit to adhere to the inner surface of window.The application fundamentally protects observation window and upstream optical path component, completely solves the end point detection distortion problem caused by window pollution in traditional scheme, and in preventing process byproduct deposition on optical observation window, without introducing extraneous purge gas, avoids process formulation disturbance, significantly improves end point detection accuracy and equipment utilization.

The application provides an optical observation equipment packaging box, which comprises a box body and a box cover. The opening of the box body and the opening of the box cover can be relatively buckled to form a containing packaging space for the optical observation equipment. The first end of the box body and the first end of the box cover can be connected in a rotatable manner to realize switching between a packaging state and a supporting state of the packaging box. When the packaging box is in the packaging state, the box body and the box cover are buckled to form the containing packaging space. When the packaging box is in the supporting state, the first end face of the box body is supported below the first end face of the box cover, and the second end face of the box cover is provided with a holder seat which is used for detachable connection with the optical observation equipment. The packaging box can form a packaging containing protection for the optical observation equipment and effectively reduce external impact. Meanwhile, the packaging box can be used as a supporting base for the optical observation equipment according to requirements, the packaging box can be used for two purposes, the weight and volume of the optical observation equipment during transfer and carrying are reduced, and the installation is quick and simple.