1758results about "Photometry" patented technology

The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic effective solar irradiance measurement method, which comprises the following steps of: converting optical power into irradiance and tracing the irradiance to an SI unit system by taking trap detection transmitted by a low-temperature radiation meter as an optical power standard device and combining a precise diaphragm; respectively collecting the output voltage of the total radiometer, the output voltage of the monitoring radiometer, the zenith angle of the total radiometer in the non-shielding state and the solar irradiance output by the absolute radiometer when the total radiometer is in the shielding state and the non-shielding state, and calibrating the total radiometer; angle response, temperature response, sensitivity linear response and spectral response data of the total radiometer and the photovoltaic module under different influence parameters are obtained, a correction coefficient set is obtained through fitting and used for conducting temperature, angle, irradiance linearity and spectral mismatch correction on the irradiance measured by the total radiometer, photovoltaic effective solar irradiance data are obtained, and the photovoltaic effective solar irradiance data are obtained. Accurate measurement of the solar irradiance for photovoltaic power generation is realized.

The invention relates to the technical field of laser heat treatment, and provides a calibration method of a full-automatic circuit board cutting machine. The method comprises the following steps: acquiring physical coordinates of a circuit board of a cutting device through an intelligent sensor, and constructing a reference coordinate system matrix based on the physical coordinates; determining vibration parameters of the cutting device according to coordinates of laser spots emitted by a laser and the reference coordinate system matrix, and generating a nonlinear error component according to the vibration parameters and power information of the laser; generating an error function based on an error matrix formed by the error components, and determining a calibration coefficient vector by solving the error function; closed-loop control is conducted on the laser path of the cutting device through the calibration coefficient vector, the adaptability of the cutting device to complex working conditions is improved by integrating multi-source error factors and establishing a nonlinear mapping relation, and the cutting precision and stability are ensured.

In certain embodiments, ophthalmic laser system includes an auxiliary light system, laser system, imaging system, and computer. The auxiliary light system directs auxiliary light towards a test target according to a planned test pattern to yield one or more actual auxiliary spots of an actual test pattern on the test target. The planned test pattern indicates one or more planned auxiliary spots located relative to a planned laser spot in a predetermined manner. The laser system directs a laser beam to yield an actual laser spot of the actual test pattern on the test target. The imaging system generates a digital image of the actual test pattern. The computer analyzes the digital image to compare the actual to the planned test pattern, detect a deviation of the actual from the planned test pattern, identify an issue indicated by the deviation, and provide output in response to the issue.

The invention relates to the technical field of image generation, in particular to an intelligent vision trend chart generation method and system based on multi-modal data fusion, and the method comprises the steps: collecting the multi-modal vision data of a user through an intelligent terminal device; performing space-time alignment processing on the multi-modal vision data to generate a standardized data set with a unified timestamp; inputting the standardized data set into a multi-modal feature fusion module, and generating a comprehensive feature vector including time-space correlation information; carrying out dynamic modeling on the vision change trend by adopting a residual error connection bidirectional LSTM network, and outputting a prediction track comprising a confidence interval; the predicted trajectory and historical data are superposed, an interactive stereoscopic vision trend chart is generated through an adaptive smoothing algorithm, and the stereoscopic vision trend chart comprises a pathological factor association layer and a behavior intervention suggestion layer. The method has higher precision and applicability in the aspects of data fusion, trend prediction, visual interaction and the like, and provides technical support for precise and personalized vision health management.

Provided are an optical element capable of more easily detecting a change in refractive index of an object to be measured without sweeping a wavelength of incidence light, and an optical sensor using the optical element. An optical element includes a liquid crystal layer that is formed of a composition including a liquid crystal compound, in which the liquid crystal layer has a liquid crystal alignment pattern in which an orientation of an optical axis derived from the liquid crystal compound changes while continuously rotating toward at least one direction of in-plane directions, in a case where a length over which the orientation of the optical axis derived from the liquid crystal compound rotates by 180° in a plane is set as a single period, a length of the single period in the liquid crystal alignment pattern gradually changes in the one direction, and the liquid crystal layer has a resonance structure.

The invention discloses a high-light element damage monitoring method and system, a storage medium and a computer program product, and relates to the technical field of high-energy laser, and the method comprises the steps: starting a laser device to irradiate a to-be-monitored high-light element, the element temperature, the light spot power and the light spot image of the highlight element to be monitored in the irradiation process are acquired through a data acquisition module; generating a light spot analysis diagram, a temperature space distribution diagram and a temperature power time distribution diagram according to the element temperature, the light spot power and the light spot image; and performing damage monitoring on the highlight element to be monitored based on the light spot analysis diagram, the temperature space distribution diagram and the temperature power time distribution diagram. According to the invention, the state of the strong light element under laser irradiation is comprehensively reflected from different angles by simultaneously collecting multiple parameters, and misjudgment or missed judgment possibly caused by single parameter monitoring is avoided, so that the comprehensiveness and accuracy of monitoring are improved.

The invention belongs to the technical field of photoelectric countermeasure, and particularly relates to a CMOS detector damage system based on time-domain composite pulse laser, which comprises a time-domain composite pulse laser generation module, a light beam transmission and focusing module, a target damage monitoring module, a parameter optimization control module and a detector to be damaged. The time domain composite pulse laser generating module comprises a short pulse laser, a long pulse laser, a pulse synchronous controller, a power adjusting unit, a power supply module and a cooling device, and the power adjusting unit is electrically connected with the short pulse laser and the long pulse laser; and the power supply module is electrically connected with the long pulse laser, the short pulse laser and the cooling device. According to the method, energy loss generated by plasmas in a traditional laser damage method is avoided, the damage efficiency is remarkably improved, efficient transmission and concentration of energy in the multilayer structure are achieved through the synergistic effect of long pulses and short pulses, all layers of materials synchronously lose efficacy in a short time, and the damage consistency of the whole multilayer structure is ensured.

In certain embodiments, an ophthalmic laser system includes a laser system, imaging system, and computer. The laser system accesses a planned test pattern of planned laser spots and directs a laser beam towards a test target located at a target plane according to the planned test pattern to yield an actual test pattern of actual laser spots on the test target. The actual laser spots correspond to the planned laser spots. The imaging system has a digital camera that generates a digital image of the actual test pattern. The computer analyzes the digital image to: compare the actual test pattern to the planned test pattern; detect a deviation of the actual from the planned test pattern; identify an issue indicated by the deviation; and provide output in response to the identified issue.

The invention provides a color calibration processing method and electronic equipment. The method comprises the following steps: acquiring primary color information of light-emitting equipment; determining the theoretical brightness of each channel corresponding to the target color; determining the current duty ratio of each channel under the current junction temperature according to the current junction temperature, the reference junction temperature brightness of each channel and the theoretical brightness of each channel corresponding to the target color, and obtaining a color mixing output result; determining new reference junction temperature brightness of each channel and junction temperature offset of each channel; obtaining a new maximum brightness and a new current duty ratio of each channel under the current junction temperature, and lightening the light-emitting device again based on each new current duty ratio to obtain a new color mixing output result; and if the new color mixing output result meets the preset error range, taking the junction temperature offset of each channel as the calibration junction temperature offset of each channel of the light-emitting equipment, and taking the new reference junction temperature brightness of each channel as the calibration reference junction temperature brightness of each channel. And the color mixing precision of the light-emitting equipment in the whole working temperature range is improved.

A system and method are provided for determining a location of a laser using a diffraction grating. The system includes a lens that projects diffraction patterns from the diffraction grating as an image of diffraction peaks onto a plane. Optical sensors then sense the diffraction peaks. A processor connected to the optical sensors applies a laser position determination method to determine the laser location. In the method, the processor obtains the diffraction peak measurements from the optical sensors and applies a transform to arrange the diffraction peaks into a grid of regularly spaced peaks. The processor then applies convolution kernels to analyze the grid of regularized peaks to to determine a position of a zeroth order diffraction central peak that is used to calculate the angle of incidence of the axis of the laser beam to determine the laser position.

The present invention provides a method for correcting measurement data of an optical measuring device, comprising: obtaining measured light intensity data of a plurality of samples in a target wavelength band measured before and after an optical device in the optical measuring device is replaced; calculating a light intensity ratio curve, a weighted ratio curve, and a corrected ratio curve for each sample in the target wavelength band at each frame based on the measured light intensity data of the plurality of samples in the target wavelength band; and correcting the measured light intensity data after the optical device is replaced based on the corrected ratio curve to obtain corrected measured light intensity data. The present invention obtains a corrected ratio curve at each frame based on the measured light intensity data of the plurality of samples before and after the device is replaced, and corrects the light intensity data after the device is replaced using the corrected ratio curve, so that the film thickness and complex refractive index extracted from the corrected data are consistent with the film thickness and complex refractive index results before the device is replaced, thereby reducing unknown and difficult-to-characterize errors introduced by the device replacement.

A method of predicting a lifespan of a display device includes preparing a test panel including a test light emitting element including a first and second test light emitting layers, measuring a luminance of the first and second color of the test panel to acquire first and second deterioration data of the first and second color, calculating a lifespan of a pixel based on the first and second deterioration data, and a first and second color component ratio of first emission light for a thickness of a wavelength conversion layer. The pixel includes a light emitting element emitting the first emission light and mixed light of the first and second color, and the wavelength conversion layer, and a light emitting layer of the light emitting element includes a first light emitting layer emitting light of the first color, and a second light emitting layer emitting light of the second color.

The invention relates to the technical field of light quantum metering, in particular to a multifunctional standard single photon source generation and calibration device and a use method, and the device comprises a pumping laser light source, a nonlinear crystal, a signal optical filter, a beam splitter, a temperature control module, an idler frequency optical filter, a control module, a single photon detector group, a beam splitter, a multi-channel coincidence counter, and an optical switch. The pumping laser light source pumps the nonlinear crystal to generate two paths of single photon output of signal light and idler frequency light, the two paths of single photon output are filtered by the filter and then divided into multiple paths by the beam splitter, and standard single photons are directly output or the paths of the signal light or the idler frequency light are controlled by the optical switch to enter the single photon detector group for detection. External input single photons are controlled by the optical switch to enter the single-photon detector group for detection, and a count value of the single-photon detector group is accessed to the multichannel coincidence counter to record data. A pump light stable power system and a multi-path beam splitting coincidence counting system are introduced into a light path, so that standard single photon output with known brightness and g (2) (0) value can be realized.

A multi-line laser radar (1). The multi-line laser radar (1) comprises: a multi-line ranging laser emission module (110) comprising one or more lasers (112); a multi-line ranging laser reception module (120) comprising one or more photodetectors and designed to be adapted to detect a laser echo generated when a measurement laser emitted by the laser emission module (110) is incident to an obstacle (Z) and is diffusedly reflected; a ranging information resolution module in electrical signal connection with the multi-line ranging laser emission module (110) and the multi-line ranging laser reception module (120), and designed to calculate the distance, in each direction, to the obstacle (Z) by means of calculating the time difference between the emission of the measurement laser and the receiving of the laser echo; and a control circuit and an optical system correspondingly configured for the multi-line ranging laser emission module (110) and the multi-line ranging laser reception module (120).

The invention relates to the technical field of illuminometer calibration, and discloses a calibration device and a calibration method of an illuminometer for measuring medium and low illuminance. The calibration device comprises an integrating sphere assembly, a light source control module, a reflecting plate adjusting module, a spectrum monitoring module and a calibration execution module. A plurality of fixing holes are formed in the integrating sphere assembly, the light source control module achieves stable light intensity output through a dynamic current distribution algorithm and PID closed-loop control, the reflecting plate adjusting module compensates edge light attenuation through a self-adaptive positioning algorithm, and the spectrum monitoring module evaluates spectrum stability through a spectrum matching algorithm. And the calibration execution module adopts a nonlinear error correction algorithm to improve the calibration precision. The calibration method comprises the steps of initializing the device, adjusting the height of the reflecting plate, collecting data to generate a calibration curve, correcting errors, testing at multiple angles and the like. According to the invention, the defects of the traditional calibration technology can be effectively overcome, and the calibration precision and reliability of the medium and low illumination illuminometer are improved.

An optical module includes a base material, an optical semiconductor element, an optical circuit element, a first adhesive, and a second adhesive. The base material has a first surface. The optical semiconductor element has a first optical port and is provided on the first surface. The optical circuit element has a second optical port, which faces the first optical port and is optically coupled to the first optical port, in a side surface thereof. The optical circuit element is disposed alongside the optical semiconductor element on the first surface. The first adhesive mainly includes a UV curable material. The first adhesive fixes the optical semiconductor element to the first surface and has a first thermal conductivity. The second adhesive mainly includes a thermosetting material and has a second thermal conductivity higher than the first thermal conductivity. The second adhesive fixes the optical semiconductor element to the first surface.

The invention discloses an industrial lighting method based on an HPLC broadband power line carrier, and the method comprises the following steps: S1, obtaining all scene information of a factory production line, the scene information comprising lighting demands corresponding to different processes and different time periods of the production line; s2, formulating an illumination strategy according to a corresponding illumination demand, and storing the illumination strategy in the control platform; s3, acquiring data information in the scene through an acquisition module, transmitting the data information to a control platform through an HPLC (High Performance Liquid Chromatography) broadband power line carrier communication module, analyzing the data information through the control platform, calling a proper lighting strategy, sending a corresponding instruction through the PLC broadband power line carrier communication module, and lighting the current scene; in conclusion, the defects in the prior art are overcome, remote control, debugging and maintenance of the lighting equipment can be achieved through the HPLC broadband power line carrier technology, the flexibility and response speed of the lighting system are greatly improved, and the high social use value and application prospects are achieved.

An electronic device includes a light sensing system and an at least partially translucent housing member positioned over at least the light sensing system. The housing member has an interior surface and an at least partially translucent exterior surface, wherein the interior surface includes multiple facets configured to direct light impinging on a translucent portion of the exterior surface toward the light sensing system. The facets are configured to create a prismatic effect, such as the effect produced by a Fresnel lens, that directs light toward the light sensing system. The light sensing system optionally includes a light sensor and / or a light guide. Where the electronic device is a lighting control device, the electronic device further includes a processor coupled to the light sensing system and operable to generate lighting control signals responsive to receipt of light sensing signals from the light sensing system.

The invention belongs to the technical field of product surface protection processing, particularly relates to a method and equipment for preventing missing or excessive pasting of a light-transmitting film material on a product, and is particularly suitable for a production scene of high-precision pasting of the light-transmitting film material. The invention discloses a method for preventing missing or excessive pasting of a light-transmitting film material on a product. The method comprises the following steps that S1, the product pasted with the film is conveyed to a detection position through a mechanical arm; s2, a transmittance measuring device is used for conducting light ray casting on the product and receiving transmission light, and an original transmittance value is obtained; s3, static noise deduction is carried out on the original transmittance value, an intermediate transmittance value is obtained, and a static noise value is obtained through baseline calibration when equipment is started; the transmittance measuring device is adopted to replace manual work, so that the precision is improved, the optical detection misjudgment rate is smaller than or equal to 0.1%, and manual visual detection in the prior art is larger than or equal to 5%.

An image sensor comprising a semiconductor substrate, a plurality of photodiodes, a multilayer reflective stack, and a dielectric layer is disclosed. The plurality of photodiodes is disposed within the semiconductor substrate and includes a first photodiode and a second photodiode adjacent to the first photodiode. The multilayer reflective stack comprises a first material having a first refractive index and a second material having a second refractive index. The dielectric layer has a third refractive index and is disposed between the first photodiode and the multilayer reflective stack. The first material is disposed between the second material and the dielectric layer. The first refractive index is greater than the second refractive index and the third refractive index.

The invention relates to a radiation contamination simulation detection equipment control method based on an ultraviolet fluorescence signal, which is applied to radiation contamination simulation detection equipment, and the equipment comprises a detection probe. The method comprises the steps that a fluorescence intensity original signal and an ambient light interference signal of a target area are collected, the distance between a detection probe and a target surface is obtained, a fluorescence simulation agent is sprayed on the target area and irradiated by an ultraviolet LED lamp, and the simulation agent is used for emitting fluorescence with the wavelength larger than 450 nm under excitation of ultraviolet light; based on the distance and the ambient light interference signal, performing coupling compensation on the fluorescence intensity original signal; and calculating a radiation simulation value according to the calibration fluorescence intensity signal, and outputting information such as the radiation simulation value, the safety level and the component type. According to the method, through non-radiation simulation agent replacement, signal calibration and multi-dimensional analysis technical means, the safety of radiation detection training is improved, the health threat of a real radioactive source to trainees is eliminated, and the accuracy and the information amount of a detection result are remarkably improved.

The invention discloses a four-quadrant photoelectric detector test system and method, the system comprises a light source, a three-dimensional translation stage, an optical system, a tested guide system, a measurement camera and an upper computer, a tested four-quadrant detector is installed on the tested guide system, and the tested four-quadrant detector and the tested guide system are fixed on a support of the three-dimensional translation stage; the optical system is used for splitting the light source, the light source firstly penetrates through the optical system to irradiate the surface of the detected four-quadrant detector, and meanwhile light reflected by the surface of the detected four-quadrant detector is received by the measuring camera after being reflected by the optical system; the measurement camera obtains an energy distribution image of the light spot, and the upper computer calculates a calibration coefficient based on light spot energy center offset information measured by the measurement camera and light spot energy center offset information output by the guide system. The linear relation between the light spot energy center offset and the output signal is tested and calibrated, the high-efficiency test requirement is met, and then the application capacity of the four-quadrant detector guide system is improved.

The invention relates to the technical field of laser measurement, in particular to a laser spot energy distribution measurement method, device and equipment and a storage medium, and the method comprises the steps: firstly obtaining a to-be-simulated laser beam, calling a pre-trained laser light path transmission model to carry out the beam propagation behavior simulation of the to-be-simulated laser beam, and obtaining a simulation spot energy distribution parameter; constructing an initial light beam energy distribution model based on the simulation light spot energy distribution parameters, then optimizing model parameters of the initial light beam energy distribution model by adopting a beetle beetle algorithm to obtain a target light beam energy distribution model, and then obtaining real-time laser light spot energy parameters; inputting the real-time laser spot energy parameters into the target light beam energy distribution model for fitting calculation to obtain real-time spot energy distribution parameters, and finally performing visualization processing on the simulation spot energy distribution parameters and the real-time spot energy distribution parameters to obtain visualization data. The invention aims to realize high-precision and real-time reconstruction of the actual light spot form of the micro laser.

A system for calibrating the light sensitivity of a camera includes a light emitter for emitting a light pulse, a fiber splitter for receiving the light pulse via an input port and providing first and second portions of the light pulse to respective first and second output ports, and a light collector for receiving the first portion from the first output port and converting the first portion to a first signal representative of a light characteristic of the first portion. A first fiber optic cable connects the light emitter and the input port, a second fiber optic cable connects the first output port and the light collector, and a third fiber optic cable has a first cable end connected with the second output port and a second cable end for emitting the second portion of the light pulse for capture by the camera. A related method is also provided.

A system and method for producing an integrated optical assembly, which can include providing a functionalized scaffold material; and forming an optical assembly including at least two optical components within the scaffold material, the forming of the optical assembly including: lithographically patterning a first optical component within the scaffold material; and lithographically patterning a second optical component within the scaffold material aligned with the first optical component.

The invention provides a robot dynamic obstacle trajectory prediction navigation method based on a visual model, and relates to the field of power equipment maintenance, the method comprises the following steps: collecting original data of dynamic scene multi-modal perception, carrying out space-time alignment, extracting thermal infrared dynamic feature vectors and visual dynamic feature vectors, and carrying out dynamic scene multi-modal perception on the thermal infrared dynamic feature vectors and the visual dynamic feature vectors; simultaneously calculating the fuzzy degree of the visual image and the dynamic complexity of the scene; calculating a fusion weight of the thermal infrared feature and the visual feature through a dynamic modal weight algorithm, and outputting a fusion feature vector; inputting the fusion feature vector into a visual model, and calculating the trajectory probability distribution of the dynamic obstacle; calculating comprehensive uncertainty and risk coefficients based on the trajectory probability distribution; and based on the fusion feature vector and the trajectory probability distribution, integrating the uncertainty and the risk coefficient, and planning an obstacle avoidance path and a decision report in combination with an A algorithm, so as to realize the dynamic navigation of the robot. According to the technical scheme, the reliability and intelligence of robot navigation can be improved, and the navigation requirement of a complex environment is met.

The invention discloses a portable light intensity verification device, and belongs to the technical field of environment and meteorological monitoring. The portable light intensity verification device comprises a voltage-stabilized power supply, a light source and a shading sealing cover, and the voltage-stabilized power supply is connected with the light source through an electric wire, supplies power to the light source and controls the light intensity of the light source; the light source is a group of LED lamp beads, the shading sealing cover is made of a hot good conductor, a plurality of open holes are formed in the shading sealing cover, and the LED lamp beads are fixedly arranged on the inner wall of the shading sealing cover through the open holes. A heat dissipation assembly can be further arranged to promote heat dissipation of the shading sealing cover. In the process of measuring the photolysis rate of the gas in the atmosphere by a spectroscopic method, the optical receiving head is covered by the shading sealing cover provided with the LED lamp beads, and the spectrograph is subjected to simple, rapid and reliable field calibration or verification, so that the verification work can be carried out without a standard optical platform, and the characteristics of accuracy, convenience and the like are achieved.

The invention relates to the technical field of headlamp detection, and discloses a motor vehicle headlamp detector calibrator calibrating device which comprises a base, a supporting table is installed on the top of the base, a moving mechanism is installed on the top of the supporting table, an adjusting mechanism is installed on one side of the moving mechanism, a rotary adjusting mechanism is installed on the top of the supporting table, and a rotating shaft is installed on the rotating adjusting mechanism. The device comprises a supporting table, a contraction mechanism is installed on one side of the supporting table, a supporting mechanism is installed on the top of the contraction mechanism, a rotation adjusting mechanism comprises two supporting plates, the close sides of the two supporting plates are rotationally connected with platform connecting pieces, and the close sides of the two platform connecting pieces are fixedly connected with a fixing plate. The calibration table is driven by the rotating motor, the platform connecting piece is matched to control the fixing plate, multi-angle flexible adjustment of the to-be-detected component is achieved, the component fixing stability and the detection efficiency are improved, diversified detection requirements can be met, and it is ensured that detection data are comprehensive and accurate.

The invention discloses a smart energy monitoring and analysis system and an energy management method. The smart energy monitoring and analysis system comprises a multi-mode sensing unit, an edge computing unit, a dynamic transmission unit, an intelligent analysis unit and a closed-loop control unit. All the units interact based on a standardized protocol to form a five-level collaborative closed-loop architecture from data acquisition to strategy execution. According to the system, the data credibility is improved through multi-modal sensing and self-adaptive calibration, the link efficiency is optimized by utilizing a dynamic hierarchical transmission strategy, collaborative optimization calculation is carried out based on a model in which a physical mechanism and data driving are fused, and therefore comprehensive optimization of photovoltaic consumption, energy storage life and energy consumption economy is achieved in a multi-target scene. According to the invention, the overall efficiency and system adaptability of energy management are remarkably improved, and reliable support is provided for stable and efficient operation of the multi-energy complementary system.

The invention belongs to the technical field of laser protective eyeshades, particularly relates to an engineering field self-regulation laser protective eyeshade based on a sensor technology and artificial intelligence, and is used for solving the problems that an existing protective eyeshade solution cannot adapt to a dynamically changing laser environment, color distortion interferes with user vision and the environmental interference is high. According to the invention, by fusing a sensor technology and an adaptive dynamic control algorithm, the color rendition capability and the anti-interference capability of a visible light wave band are remarkably improved while millisecond-level laser threat response is realized, so that the technical bottlenecks of strong visual and environmental interference and the like of traditional protection equipment in engineering field application are solved; the device is especially suitable for complex construction scenes with high-frequency mechanical vibration and multi-wavelength laser cross operation.