3035results about "Photometry" patented technology

The invention relates to the field of highway safety monitoring, and discloses a highway subgrade safety monitoring system and a risk identification method, and the system comprises a distributed optical fiber sensing subsystem and a video image capturing equipment subsystem which are respectively connected with a rear-end server; the distributed optical fiber sensing subsystem comprises distributed Rayleigh scattering optical fibers and / or distributed Brillouin scattering optical fibers which are arranged on a highway subgrade according to risk levels and is used for collecting dynamic information related to the highway subgrade, and the dynamic information represents environment and state changes of the highway subgrade; the video image capture device subsystem comprises a plurality of AI video image capture devices; and after receiving the dynamic information, the back-end server inputs the dynamic information into a preset calculation model to obtain a deformation index parameter output by the preset calculation model, determines a response level of the AI video image capture device according to the deformation index parameter, and configures an operation parameter of the AI video image capture device based on the response level. According to the system, real-time, accurate and comprehensive monitoring of a road is realized through cooperation of the distributed optical fiber, the AI video image capturing equipment and the back-end server.

The invention relates to the technical field of focus testing, and particularly discloses a laser cutting head zero focus testing method based on reflected light detection, which comprises the following steps: S1, acquiring an optical signal reflected by a processed plate in a cutting process; s2, adjusting the position of a focusing lens to enable a laser focus to move along the optical axis direction relative to the surface of the plate; s3, recording reflected light intensity values corresponding to different focus positions, obtaining a function relationship between the reflected light intensity and the focus positions, and drawing a light intensity-focus position relationship curve; s4, determining a corresponding focus position when the intensity of the reflected light reaches the maximum value as an optical zero focus position of the system; s5, automatically recording and storing an optical zero focus position; the reflected light detector arranged in the cutting head or the laser reads the intensity of the reflected light in the cutting process, the function relation between the focus position and the intensity of the reflected light can be established, and the focus position corresponding to the maximum value of the intensity of the reflected light is the most accurate optical zero focus position.

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.

A robotic vacuum cleaner according to an embodiment includes a main body forming an outer appearance, a rotation part rotatably disposed on a lower side of the main body, a cleaning member detachably couplable to the rotation part and having at least one reflective pattern provided on a surface thereof, and an optical sensor disposed at a position adjacent to the rotation part, emitting light toward the cleaning member, and obtaining a light reflection amount reflected by the cleaning member, and the at least one reflective pattern has a reflectance different from a remaining region of the surface not provided with reflective pattern.

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.

The invention provides a control method of a detection system, and the detection system comprises an illumination module, a first detection device, and a light splitting module and a first power adjustment module between the illumination module and the first detection device. The first detection equipment is used for detecting a first to-be-detected surface to obtain a first detection signal, the light splitting module is used for splitting the illumination light beam to obtain a first sub-light beam and a second sub-light beam, the first detection equipment can be illuminated based on the first sub-light beam, and optical power detection can be performed based on the second sub-light beam; therefore, illumination and light detection can be both considered, when the actual light power exceeds the preset range, the light power of the light beam penetrating through the first power adjusting module is adjusted so as to adjust the intensity of the first detection signal, and if the intensity of the first detection signal meets the preset condition, the light beam is detected. And the adjustment of the optical power of the light beam penetrating through the first power adjustment module is stopped, so that the accurate adjustment of the optical power is realized.

Disclosed is a media element including an environmental indicator material configured, in response to exposure to a predetermined environmental condition, to change from an initial state to a second state producing an observable effect. The media element further includes a plurality of microcapsules, each microcapsule encapsulating the environmental indicator material in a non-activated configuration and releasing the environmental indicator material when ruptured. The microcapsules prevent an occurrence of the observable effect while in the non-activated configuration and allow the occurrence of the observable effect when the environmental indicator material is exposed to the predetermined environmental condition after at least a portion of the plurality of microcapsules are ruptured. The media element further includes a bursting additive proximate the plurality of microcapsules. The bursting additive selectively interacts with the plurality of microcapsule to rupture the plurality of microcapsules when a force is applied to the plurality of microcapsules and bursting additive.

The invention relates to the technical field of lamps, in particular to a light sensor, a lamp and a using method. A light sensor includes: a condenser lens; a light sensor; the shell is provided with a containing space, a through hole is formed in the shell, the condensing lens and the light sensor are fixedly arranged in the containing space of the shell, part of the condensing lens is arranged in the through hole, the condensing lens and the light sensor are correspondingly arranged, the condensing lens is used for collecting light outside the shell, and the light sensor is used for sensing the light outside the shell. And the light sensor is used for sensing the change of the light rays collected by the condensing lens. The invention provides a light sensor, a lamp and a use method, and aims to solve the problems that a lighting element and a sensing element are fixed through two parts in the design process of an existing sensor, and in later assembly and use, due to the fact that the lighting element and the sensing element have installation errors, positioning of the lighting element and the sensing element is not accurate, and the cost is low. The use effect of the sensor is affected, and the experience is poor.

The invention discloses a marine radiance meter immersion factor measurement method, which belongs to the technical field of radiation value measurement, and comprises the following steps: controlling a stable halogen tungsten lamp to irradiate towards a calibration container below the calibration container, the bottom of the calibration container is a diffuse transmission plate to generate a uniform light field, and the calibration container is filled with ultrapure water; the method comprises the following steps: firstly, measuring the radiance value of the optical window of the radiance meter just immersed under the water surface, then discharging ultrapure water in a calibration container in sequence, and obtaining the radiance value when the distance between the optical window of the radiance meter and the water surface is zi; performing water attenuation correction on a measured value in the air of the radiance meter, and extrapolating to calculate radiance when zi is equal to 0; the refractive index of the water body is calculated, and the immersion factor of the to-be-measured radiometer is calculated. According to the marine radiance meter immersion factor measuring device, the problem that in theoretical calculation, only the radiance meter optical window refractive index is considered, and different radiance meter light path design influences are ignored, so that the deviation between a theoretical calculation result and an actual value is large is solved.

The invention belongs to the technical field of laser measurement equipment, and provides a laser experiment device for measuring laser power reduction in a submerged environment, which comprises an experiment platform, a laser generation system and an experiment system, the experiment system comprises a submerging container and a laser power reduction measuring assembly. A liquid medium is stored in the submerged container, and the sample is submerged in the liquid medium; the laser power reduction measuring assembly is located below the submerging container. Laser emitted by the laser head irradiates a sample in the submerged container, and the laser power reduction measuring assembly is used for measuring the power reduction of the laser penetrating through the liquid medium; as a device for measuring laser reduction, the laser reduction degree of laser power and energy under different liquid media can be explored, the reduction influence of different liquid media on the laser power can be explored, the optimal laser power corresponding to the liquid media can be found, the laser-assisted rock breaking strategy in the drilling process can be correspondingly adjusted, and the drilling efficiency is improved. And effective data can be provided for laser-assisted rock breaking in a liquid environment.

According to an aspect, a detection device includes: a ring-shaped housing; a light source provided in the housing; a first optical sensor provided in the housing so as to be adjacent to one end of the light source in a circumferential direction of the housing; and a second optical sensor provided in the housing so as to be adjacent to the other end of the light source in the circumferential direction of the housing. At least the first optical sensor is an organic photodiode including a sensor substrate, a lower electrode, a lower buffer layer, an active layer, an upper buffer layer, and an upper electrode.

Optical sensing apparatus includes a transmitter, which is configured to transmit outgoing frequency-modulated (FM) coherent optical radiation toward a target scene. A receiver includes an array of single-photon detectors, which are configured to output electrical pulses in response to photons that are incident on the detectors. Optics image the target scene onto the array while diverting a part of the outgoing FM coherent optical radiation to form a local beam, which mixes with incoming optical radiation from the target scene. Processing circuitry is configured to compute counts of the electrical pulses output as a function of time by the single-photon detectors in response to the mixed optical radiation, to extract beat frequencies from the computed counts, and to measure ranges of points in the target scene responsively to the beat frequencies.

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 relates to the technical field of light detection, in particular to a light detection sensor and a light projection device and an optical module thereof, the light projection device comprises an illumination optical system, a light modulation element and a projection optical system, and the illumination optical system is configured to emit light advancing along a first preset light path; the light modulation element is configured to receive light emitted by the illumination optical system and modulate the light to generate modulated light, and the modulated light travels along a second preset light path; the projection optical system is configured to receive the modulated light and guide the modulated light to advance along a second preset light path; the projection optical system comprises a plurality of lenses, and optical axes of partial lenses in the plurality of lenses are offset by a preset offset amount relative to a main optical axis of the projection optical system. According to the invention, under the condition that a relatively small Samm angle is adopted, the misalignment amount is preset for a part of lenses in the plurality of lenses, so that the miniaturization requirement of the sensor can be met, and the light energy transmission efficiency can be improved.

A polarizing microscope (1) is provided with: a sample stage (4) on which a sample (8) is placed; a polarizer (3) provided on the light source side of the sample (8); and an analyzer (6) provided on the observation side of the sample (8). At least one of the polarizer (3) and the analyzer (6) is provided such that the polarization direction is inclined with respect to the optical main axis of the sample (8), or such that the included angle between the polarization direction of the analyzer (6) and the polarization direction of the polarizer (3) deviates from a right angle.

The invention relates to the technical field of solar power generation, in particular to a charging and discharging management system of a solar street lamp, which comprises a data acquisition unit, an illumination intensity prediction unit, a fuzzy reasoning unit, a charging optimization unit, a discharging optimization unit and a battery management unit. Historical data of street lamps are collected and preprocessed through a data acquisition unit, and a first data set is generated; the illumination intensity prediction unit applies an SARIMA model to predict future illumination intensity; the fuzzy reasoning unit generates a membership function according to the first data set and the predicted illumination intensity; the charging optimization unit constructs a fuzzy inference rule base by using a membership function and calculates the current charging power; the discharge optimization unit divides discharge time periods according to the first data set and calculates discharge power; the battery management unit updates the remaining capacity of the storage battery according to the charging power and the discharging power and evaluates the energy storage effect, the energy management effect of the solar street lamp can be improved, and therefore the adaptability of charging and discharging management of the solar street lamp is 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.

A substrate processing apparatus that can radiate light on a composition in an optimum radiation amount based on acquired spectral sensitivity characteristics can be provided.A substrate processing apparatus configured to perform pattern formation processing on a composition on a substrate includes a first radiation unit configured to radiate first light onto the substrate, a dispenser configured to apply the composition to a first position inside the substrate processing apparatus, a template holding unit configured to hold a template to be brought in contact with the composition on the substrate, and a controller configured to control a radiation amount of the first light to be radiated by the first radiation unit based on spectral sensitivity characteristics of the composition that are measured in advance.

The invention relates to the technical field of material science, and particularly discloses a method for testing photoelectric and thermal characteristics of a semiconductor device, which comprises the following steps of: acquiring crystal impurity evaluation parameters of the semiconductor device to perform crystal impurity evaluation of the semiconductor device, and acquiring a crystal impurity interference correction value, the method comprises the steps of obtaining a thermal characteristic parameter set and a light characteristic parameter set of a semiconductor device, determining a test temperature array and a test light intensity array, determining a plurality of photo-thermal coupling test schemes based on the test temperature array and the test light intensity array, applying each photo-thermal coupling test scheme to the semiconductor device and obtaining an electrical characteristic tested data set, according to the method, the electrical characteristic tested value is calculated based on the electrical characteristic tested data set corresponding to each photo-thermal coupling test scheme, the optimal photo-thermal coupling test scheme is determined, the rationality and adaptability of formulating the photo-thermal coupling test scheme are improved, and it is ensured that the test result can reflect the characteristic performance of the semiconductor device in various environments.

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.

The invention provides an optical fiber coupling module anomaly detection method and device, a medium and equipment, and belongs to the technical field of optical device detection. The optical fiber coupling module comprises multiple paths of laser coupling units, each path of laser coupling unit comprises multiple groups of laser units, and the method comprises the following steps: acquiring an optical power value of each group of laser units; generating an optical power sequence of each path of laser coupling unit based on the optical power numerical value; performing anomaly analysis on the laser coupling unit based on the optical power sequence to obtain a first analysis result; the first analysis result comprises that the laser coupling unit is normal or abnormal. According to the invention, the identification accuracy and identification efficiency of the abnormal laser coupling unit can be greatly improved.

The invention provides a clamping device for lamp testing, which is used for clamping a lamp and placing the lamp in a darkroom, light intensity detectors are arranged at different positions in the darkroom, the plurality of light intensity detectors are used for detecting the light intensity of the lamp towards each angle, and the clamping device for lamp testing comprises a base, a rotating seat and a clamping frame, the rotating seat is rotatably arranged on the base around a first rotating shaft, the clamping frame is rotatably arranged on the rotating seat around a second rotating shaft, and the first rotating shaft and the second rotating shaft intersect in different planes. A plurality of clamping pieces used for clamping a lamp are arranged on the clamping frame in a sliding mode, the clamping pieces and the clamping frame are connected through elastic pieces, and the elastic pieces are used for driving the multiple clamping pieces to slide towards the center of the clamping frame. According to the clamping device for the lamp test, through the rotary cooperation of the rotary seat and the clamping frame, the lamp clamped on the clamping frame can be changed at a plurality of different angles, light intensity detection in a plurality of different directions can be carried out, and the detection of the light intensity of the lamp is very comprehensive.

The utility model discloses a universal testing machine which comprises an outer shell, an adjustable light source is fixedly arranged at the top in the outer shell, a bearing plate is arranged at the bottom in the outer shell, an adapter plate, an illuminometer, a power supply module and a product automatic starting-up mechanism are fixedly installed on the bearing plate, heating blocks are symmetrically and fixedly arranged on the upper side of the bearing plate, and the heating blocks are connected with the adapter plate. The heating block is fixedly arranged on the bearing plate through an inverted-L-shaped support, and a metal baffle is further fixedly arranged on the upper side of the bearing plate. According to the utility model, the adjustable light source is used to calibrate the light sensor, the infrared light emission source is placed at a position higher than the sensor to detect the PIR, the function of the ultrasonic sensor can be detected, and the whole testing machine can test more performances and has strong applicability.

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.

A squeezed light generator may include a triply-coupled optical resonator having a triplet resonance with a split-resonant frequency spacing Ω, where the triplet resonance receives light at frequencies associated with at least one split-resonant frequency in the triplet resonance and generates squeezed light with at least another split-resonant frequency in the triplet resonance.