290 results about "Luminous flux" patented technology

The invention provides an intelligent control method for a floodlight illumination system, and the method comprises the steps: obtaining an environment surface roughness coefficient, spectral reflection distribution and spatial geometric change data, determining the wall surface material absorptivity and shielding region coordinates, and obtaining environment reflection characteristics and shielding distribution data; analyzing shielding boundary sharpness and shielding angle distribution according to the spatial geometric change and the coordinates of the shielding area, calculating a luminous flux distribution curve of a local dark area, and judging whether the influence range of the dark area exceeds a preset threshold range or not; calculating the illumination coverage integrity according to the updated light field distribution and polarization reflection characteristics, determining the boundary sharpness of a light beam, and obtaining a light field uniformity parameter; and according to the light field uniformity parameter and the shielding thermal radiation effect, calculating and optimizing light field parameters.

The invention discloses an intelligent lighting street lamp system and a control method thereof, and the method comprises the steps: obtaining an LED drive current and a dual-energy output parameter, and generating a PWM drive characteristic through frequency decomposition; performing pre-dimming compensation on the LED based on the human eye brightness sensitivity to obtain a luminous flux control feature and an energy prediction feature; obtaining LED junction temperature change data and carrying out thermal characteristic analysis to obtain LED driving compensation characteristics; dividing an illumination control time window and dynamically adjusting an LED driving current waveform to obtain a time sequence driving characteristic; and fluctuation analysis is carried out according to the real-time luminous flux data, and linkage adjustment is carried out on PWM driving characteristics, luminous flux control characteristics, LED driving compensation characteristics and time sequence driving characteristics. According to the invention, the rapid and accurate adjustment of the LED driving current can be realized, the influence of the dual-energy output fluctuation on the illumination quality is effectively inhibited, and the accurate matching problem of the energy supply and the illumination demand in a key time window is solved.

The invention discloses an atmosphere lamp user color calibration matching method. The method comprises the steps that K PCBA boards are installed on a lamp shell; measuring a color coordinate value and a luminous flux value of the atmosphere lamp; the color coordinate value and the luminous flux value of any atmosphere lamp serve as color correction data, and the pwm duty ratio is calculated; the controller controls the LED driver to drive the K atmosphere lamps to complete primary color correction; the PCBA board in any atmosphere lamp is taken out, and the actually measured luminous flux value of the PCBA board is measured; comparing the actually measured luminous flux value with a target luminous flux value to obtain a ratio r; increasing the target luminous flux value Yt by r times, and calculating a pwm target duty ratio in combination with color correction data; the controller controls the LED driver to drive the K atmosphere lamps to complete secondary color correction; and the color coordinate value and the luminous flux value of the atmosphere lamp after color correction are measured and compared with customer standards. The method has the advantages that assembly user color adjustment of multiple styles of atmosphere lamps is achieved, the matching degree of chromatic value control of the atmosphere lamps and real environment requirements is met, the production time cost is greatly saved, and the production efficiency is improved.

The invention relates to the technical field of image data processing, and discloses a method for detecting impurities in metal powder based on image recognition, which comprises the following steps of: irradiating the metal powder by using polarized light, synchronously acquiring an orthogonal polarization component image of the reflected light, and realizing impurity detection by calculating a differential image. Qualified powder spontaneously forms a uniform dark field in a differential image by utilizing the essential difference of response of metal powder and impurities to polarized light, and the impurities generate remarkable signals due to optical anisotropy, so that the detection blind area of the traditional method on the microscopic impurities is broken through, the method further performs time sequence analysis by multiplexing total luminous flux data, and the detection accuracy is improved. Synchronous identification of impurity morphological characteristics is realized, component and morphological two-dimensional detection capability is formed, the system realizes adaptive threshold adjustment based on statistical characteristics of differential images, and long-term operation stability is ensured.

A light emitting device includes a planar array of individually addressable first light sources configured to emit visible light into a plurality of angular bins toward an environment, one or more second light sources configured to emit ultraviolet light, an imager positioned to receive light reflected from the environment, a processor configured to analyze one or more images captured from the imager and identify a shadow region in the environment, wherein one or more light sources of the plurality of individually addressable first light sources is directed to increase a light flux output in one or more angular bins of the plurality of angular bins corresponding to the shadow region. The one or more second light sources and may be individually addressable and positioned in a planar array on a substrate.

Provided in the present application are an optical lens and an electronic device. The optical lens comprises, in sequence from a first side to a second side: a first lens with a positive focal power, wherein a first side face of the first lens is a convex face; a second lens with a negative focal power, wherein a first side face of the second lens is a concave face, and a second side face thereof is a concave face; a third lens with a positive focal power, wherein a second side face of the third lens is a convex face; a fourth lens with a focal power, wherein a first side face of the fourth lens is a convex face; a fifth lens with a focal power; and a sixth lens with a negative focal power. The present application solves the problem in the prior art of it being difficult to take into account all of a high resolution, miniaturization, back focal length, a small CRA, low sensitivity and a high luminous flux for an optical lens. Further provided in the present application are an optical lens and an electronic device. The optical lens comprises: a first lens, which has a positive focal power, wherein a first side face of the first lens is a convex face; a second lens, a first side face and a second side face of which have opposite face shapes; a third lens, which has a positive focal power, wherein a first side face of the third lens is a concave face, and a second side face of the third lens is a convex face; a fourth lens, which has a negative focal power, wherein a first side face of the fourth lens is a concave face, and a second side face of the fourth lens is a convex face; a fifth lens, which has a positive focal power, wherein a second side face of the fifth lens is a convex face; a sixth lens, which has a focal power, wherein a first side face of the sixth lens is a convex face; a seventh lens, which has a focal power; and an eighth lens, which has a negative focal power, wherein a second side face of the eighth lens is a concave face. The present application solves the problems in the prior art of an optical lens having a small luminous flux, it being impossible to take into account both a high resolution and a small aperture, and the lens design being limited by miniaturization, resulting in a poor trade-off between high sensitivity, aberration, etc. Further disclosed in the present application are an optical lens and an electronic device comprising the optical lens. The optical lens comprises, in sequence from a first side to a second side along an optical axis: a first lens with a positive focal power; a second lens with a negative focal power, wherein a first side face of the second lens is a concave face, and a second side face of the second lens is a concave face; a third lens with a focal power; a fourth lens with a focal power; a fifth lens with a focal power; a sixth lens with a focal power; a seventh lens with a focal power, wherein the seventh lens and the sixth lens have opposite positive and negative focal-power properties; and an eighth lens with a negative focal power.

The present invention relates to a flash-spun polyethylene film material with a good toughness and a manufacturing method therefor. The raw materials thereof comprise polyethylene. The gram weight G of the flash-spun polyethylene film material is greater than 50 g / m2; the initial toughness Z0 of the flash-spun polyethylene film material is 20-35 (N·m) / g; and Z0=[RM×EM+RT×ET] / G, wherein RM is the tensile strength in the MD direction, RT is the tensile strength in the TD direction, EM is the tensile elongation in the MD direction, and ET is the tensile elongation in the TD direction. The flash-spun polyethylene film material is exposed in a dry and hot atmosphere at 90ºC for 6 hours, and is then cooled under the conditions of a temperature of 25ºC and a relative humidity of 65% for 24 hours, and the light transmittance thereof is measured to be 8-13%. The testing of the light transmittance is performed according to GBT2410-2008, and the light transmittance is the ratio of the luminous flux of light penetrating a sample to the luminous flux of light emitted onto the sample, and is expressed as a percentage. The flash-spun polyethylene film material of the present application has a relatively good toughness.

The invention relates to a three-waveband medium-long wave infrared optical filter and a preparation method, the three-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, and the substrate is located between the front film system and the back film system; the front film system is formed by alternately overlapping germanium layers and zinc selenide film layers; and the back film system is formed by alternately overlapping germanium layers and zinc selenide film layers. According to the invention, the light energy of three wave bands of 3780-4000 nm, 4500-4900 nm and 7850-9500 nm is improved, the luminous flux of other wave bands is well inhibited, the technical problem of infrared filtering windows in some special infrared spectrum detection systems is solved, and a new scheme is provided for the application of the infrared spectrum detection systems.

The invention discloses a temperature-based LED color deviation compensation correction method. The method comprises the following steps: measuring LED lamp bead data by using a spectrograph and importing the data into a PC terminal; normal-temperature color coordinate values and normal-temperature luminous flux values of red, green and blue channels of the LED lamp beads collected at the normal temperature of 25 DEG C and the temperature t serve as independent variables at a PC end, data of the LED lamp beads are fitted into a multivariate high-order function through machine learning, and the multivariate high-order function is written into a program code of a controller; measuring primary color coordinate values and primary luminous flux values of red, green and blue channels of the LED lamp beads at 25 degrees once by using a spectrograph, and writing the primary color coordinate values and the primary luminous flux values into a controller; the controller obtains the current temperature value t ', and the actual color coordinate value and the actual luminous flux value of the LED lamp bead under the current temperature value t' are calculated; and calculating the target duty ratios of the red, green and blue channels of the LED lamp beads with the target color and writing the target duty ratios into an LED driver, wherein the LED driver drives the LED lamp beads to mix light with the same color as the target color. The production efficiency of the atmosphere lamp is improved, the production process is simplified, and the color cast compensation precision of the atmosphere lamp is improved.

The invention discloses a system and a method for verifying and evaluating the optical performance of a partial discharge optical sensor based on integral spectrophotometry, and the optical sensor is used for capturing an optical signal generated in a partial discharge process, and converting the optical signal into an electric signal; secondly, the optical signals are processed through an integral spectrophotometry, and optical parameters such as luminous flux, spectral distribution and light intensity are calculated; and then, based on an algorithm in the data acquisition and processing unit, the response characteristic, the sensitivity and the measurement precision of the optical sensor are evaluated. According to the technical scheme, all-around performance verification and accurate evaluation of the partial discharge optical sensor can be achieved, the detection precision and reliability of the optical sensor in complex power equipment are improved, and the method has wide application prospects.

The invention belongs to the technical field of glossiness detection, and particularly relates to a method for rapidly and nondestructively detecting the fruit surface glossiness of cattle and sheep-horn peppers, which comprises the following steps: S1, recording the reflected luminous flux of a glossiness plate by adopting the glossiness plate; s2, selecting a measurement site according to the surface type of the to-be-measured sample, measuring the site by using a glossmeter, and recording the reflection luminous flux of the measurement site; s3, calculating the glossiness of the measurement site; s4, correcting the glossiness of the measurement site to obtain the glossiness of the sample to be measured; and S5, correcting the glossiness according to the data correction model, and dividing the glossiness grade of the sample to be detected. The detection method disclosed by the invention is high in repeatability and high in precision, can realize rapid and nondestructive detection of a single fruit, and has a relatively good application prospect.

The invention relates to the field of electrical engineering, and discloses a high-luminous-efficiency LED street lamp based on multi-chip combination and a luminous flux improving method thereof, and the method comprises the steps: obtaining photoelectric parameter data, carrying out the classification modeling of chips, and constructing a light source feature database; self-adaptive parameter extraction is carried out on the light source feature database, a cooperative work model is constructed, the chip load state is adjusted through a current sharing control strategy, and the chip heat distribution change condition is monitored in real time; whether the working state is stable or not is judged based on the heat distribution change condition, and if the working state is stable, stage change data of luminous flux output is recorded, and a chip driving strategy is corrected; according to the corrected chip driving strategy, spatial distribution regulation and control and energy efficiency optimization are carried out on output luminous flux, regulation factors are extracted, a light emitting path and heat dissipation intensity are adjusted, and luminous efficiency balance improvement is carried out; and evaluating the luminous flux output effect based on the luminous efficiency balance improvement result, and generating a working state evaluation report and a luminous flux improvement suggestion.

The invention provides an LED street lamp brightness adaptive adjustment method and system, and the method comprises the steps: collecting light intensity time sequence data in a target region, the position-speed associated data of a road surface moving target, and power supply frequency fluctuation data through a Mesh network, so as to create a corresponding fusion data set; transmitting the fusion data set to an edge computing node of the LED street lamp to perform dynamic scene clustering and divide a plurality of target use scenes, and synchronously outputting an initial brightness adjustment parameter matched with each target use scene; historical operation data of the LED street lamp is called, a corresponding brightness attenuation prediction model is constructed, and the brightness attenuation amount in the future preset time is predicted according to the current operation duration and the environment temperature data; and performing pre-compensation correction processing on the initial brightness adjustment parameter according to the brightness attenuation so as to output a corresponding target brightness control parameter, and correspondingly controlling the output luminous flux of the LED street lamp according to the target brightness control parameter. The energy-saving benefit of the street lamp can be effectively improved.

The invention relates to the field of image data processing, in particular to a D-LED energy-saving lamp illumination efficiency detection method based on image processing. The method comprises the following steps: acquiring an image of an illumination area; performing binarization processing on the image to obtain a light area and a plurality of shadow areas; calculating a comprehensive score of an illumination efficiency parameter in the image, wherein the illumination efficiency parameter comprises luminous flux and at least one of crowd density, average brightness and distribution uniformity of a shadow region; and comparing the comprehensive score with a preset illumination efficiency evaluation standard, and judging the illumination efficiency of the D-LED energy-saving lamp. A comprehensive score is calculated by comprehensively considering various lighting efficiency parameters, such as luminous flux, crowd density, average brightness, and distribution uniformity of shadow regions. According to the evaluation mode, the influence of crowds is considered, the actual lighting efficiency of the D-LED energy-saving lamp can be reflected more comprehensively and accurately, and a more reliable basis is provided for evaluation of the lighting effect.

The invention relates to a dual-waveband medium-long wave infrared optical filter based on a germanium / zinc sulfide asymmetric film system and a preparation method of the dual-waveband medium-long wave infrared optical filter. The dual-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the average transmittance of the infrared optical filter in the wave band of 3800 nm to 4800 nm and the wave band of 8000 nm to 10000 nm is not lower than 91%. According to the two-waveband medium-long wave infrared optical filter disclosed by the invention, 3800 to 4800 nm amp is realized; according to the infrared filtering window, the light energy of medium waves and long waves of 8000-10000 nm is improved, the luminous flux of other wavebands is well inhibited, the technical problem of the infrared filtering window in some special infrared spectrum detection systems is solved, and a new scheme is provided for infrared application.

The invention provides europium-doped silicate green fluorescent powder as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. The green fluorescent powder can generate narrow-spectrum green light with the peak value located at 532 nm under excitation of 450 nm blue light, the full width at half maximum is 46 nm, a white light LED device prepared based on the fluorescent powder has a 110% NTSC color gamut, and it is indicated that the green fluorescent powder has excellent application value in backlight display. The saturation threshold value of the fluorescent powder reaches 21.6 W / mm < 2 > under the excitation of 450nm blue laser, and the lumen at the moment reaches 1157.9 lm. The green fluorescent powder disclosed by the invention has the advantages of high luminous efficiency, narrow full width at half maximum, high light saturation threshold under blue laser excitation, high lumen efficiency and the like, and has application feasibility in the aspect of laser display.

The full-color Micro-LED micro display chip comprises a driving substrate, the driving substrate is electrically connected with blue sub-pixels and blue excitation pixels which are located on the same layer height, the blue excitation pixels are integrally arranged at the positions of the two sub-pixels, red light color conversion pieces downwards wrapping the side walls of the blue excitation pixels are coupled to the upper portions of the blue excitation pixels, and red light color conversion pieces downwards wrapping the side walls of the blue excitation pixels are coupled to the lower portions of the red light color conversion pieces. The driving substrate is also electrically connected with a green sub-pixel which is located at the same layer height as the red light color conversion piece; and the blue sub-pixel and the green sub-pixel are respectively provided with a light filtering layer with a pit at the top end. The light-emitting area of the blue excitation pixel is effectively increased, meanwhile, the coupling technology is enhanced to enable the red light color conversion piece to wrap the side wall of the blue excitation pixel, the luminous flux of the blue excitation pixel entering the red light color conversion piece is further increased, the luminous flux of the blue sub-pixel and the green sub-pixel can be regulated and controlled through selective opening of the light filtering layer, and the luminous efficiency of the blue sub-pixel and the green sub-pixel is improved. Therefore, the full-color display white balance is effectively controlled.

The present technology pertains to a measurement device capable of suitably measuring the spectrum of a measurement light. A measurement device according to the present technology is provided with: a luminous flux splitting unit for splitting substantially parallel luminous flux into a first luminous flux and a second luminous flux, refracting and emitting the first luminous flux, and emitting the second luminous flux in a direction symmetrical to the emission direction of the first luminous flux on the basis of a first reference plane that includes the traveling direction of the substantially parallel luminous flux, thereby causing the first luminous flux and the second luminous flux to interfere with each other; a light-condensing unit for condensing the first luminous flux and the second luminous flux on a second reference plane that includes the traveling direction of the substantially parallel luminous flux and is orthogonal to the first reference plane; a sensor unit for detecting interference light between the first luminous flux and the second luminous flux; and a calculation unit for calculating the spectrum of the substantially parallel luminous flux on the basis of a detection result by the sensor unit. The present technology can be applied to, for example, a spectroscopic measurement device.

The invention provides a spectrum chip and an electronic device, the spectrum chip comprises a light splitting unit and a plurality of light sensing units, the light splitting unit has a light incident side and a light emergent side which are oppositely arranged, the plurality of light sensing units are arranged on the light emergent side of the light splitting unit, each light sensing unit has a light sensing area which is oppositely arranged with the light splitting unit, the plurality of light sensing areas have different areas, so that the light splitting unit is suitable for respectively providing light signals with different luminous fluxes for the plurality of light sensing units under the condition that the light intensity of the light incident side is the same, and the light signals are converted into electric signals by the corresponding light sensing units. By setting the photosensitive areas with different areas, the plurality of photosensitive units can obtain luminous fluxes with different sizes, and the system can select the most suitable image corresponding to the photosensitive unit according to the actual illumination condition, thereby effectively reducing the overexposure or too dark condition, and improving the imaging quality problem when the illumination environment changes drastically.

The present application provides a method and an apparatus for calculating a duty cycle of a lighting, a terminal, and a storage medium. The method includes: determining a first expression formula of a chromaticity coordinate, a luminous flux and an input duty cycle of each path of three paths of a RGB color light source; calibrating, based on the first expression formula and tristimulus values of the three paths of the RGB color light source under a full current operation, a nonlinear transformation of the luminous flux, to obtain a first duty cycle value; and calibrating, based on the first duty cycle value and the first expression formula, a nonlinear transformation of the chromaticity coordinate, to obtain a second duty cycle value; and controlling displaying colors of the RGB color light source based on the second duty cycle value.

Belonging to the technical field of lamp shell materials, the invention discloses an anti-aging lamp shell composite material, which comprises the following components by mass: 80-110 parts of modified PC master batch; 20 to 30 parts of modified ABS master batch; 2-7 parts of titanium silicon powder; 8-16 parts of hollow glass beads; 2 parts of a toughening agent; 0.1 to 0.3 part of a lubricant; the titanium-silicon powder effectively increases the white brightness of the lamp body shell, and when the titanium-silicon powder is used in cooperation with the hollow glass beads, the lamp shell can have higher light reflectivity, the lamp shell reflects most light to the diffusion plate and then emits the light, the overall luminous flux of the lamp is increased, meanwhile, the light absorption amount of the lamp shell is reduced, and the aging speed can be effectively slowed down. Wherein the modified PC master batch is prepared by mixing PC resin, 2, 6-di-tert-butyl-4-methylphenol and thiodipropionic acid diester; wherein the modified ABS master batch is prepared by mixing ABS resin and a composite ultraviolet absorbent. The PC master batch and the ABS master batch are both modified, so that the oxidation resistance is higher after the lamp shell is formed.

A lighting device includes a warm correlated color temperature (CCT) light emitting diode (LED) configured to emit warm white light and a cold CCT LED configured to emit cold white light. The lighting device further includes a green LED configured to emit green light having a green luminous flux controlled based on a flux of cold white light or a flux of warm white light, where a value corresponding to the green luminous flux is obtained from the lookup table. The lighting device further includes a [delta] u, v (Duv) adjustment LED configured to emit Duv adjustment light having an adjustment total flux including an adjustment flux amount, the adjustment flux amount having a maximum flux value determined by iteratively adjusting the adjustment flux amount until a Duv of a combined light including the warm white light and the Duv adjustment light is less than a threshold.

The invention provides a training method of a spectrum matching model, and a spectrum matching method, device and equipment. The training method comprises the following steps: acquiring a training sample; inputting the training sample into a feature extraction network of an initial deep learning model for feature extraction to obtain spectral features; inputting the spectral features into a full connection layer of an initial deep learning model for lamp bead prediction to obtain a prediction probability that each type of lamp bead is selected; determining a candidate lamp bead set according to the prediction probability; inputting the candidate lamp bead set into a combination optimization network for lamp bead combination to obtain a target lamp bead combination simultaneously matched with at least one target spectrum and a luminous flux ratio of the target lamp bead combination corresponding to each target spectrum; calculating a loss value based on the test spectrum under the luminous flux ratio of the target lamp bead combination and the corresponding target spectrum; and by taking minimization of the loss value as an optimization target, adjusting network parameters of the initial deep learning model to obtain a trained spectrum matching model. According to the scheme, efficient and accurate spectrum matching is realized.

An apparatus (1) for producing hyper-oxygenated water comprises a controller (9), an air filter (2), an oxygen concentrator (3), a nanobubble generator (5), a water pump (7), a water reservoir (6), a water filter (8), a delivery element (4), a laser sensor, and an injector part. The oxygen concentrator (3) receives filtered air from the air filter (2) and generates a concentrated flow of oxygen. The nanobubble generator (5) is coupled to the oxygen concentrator (3) to receive the concentrated flow of oxygen. The nanobubble generator (5) is coupled to the water reservoir (6) to receive water. The nanobubble generator (5) generates nanobubbles of oxygen in the water. The delivery element (4) delivers the mixture of nanobubbles of oxygen and water. The laser sensor identifies the luminous flux of the mixture of nanobubbles of oxygen and water to calculate the density of the nanobubbles in the water. Based on the readings from the laser sensor, the controller (9) selectively alters the flow rate of the water and / or the flow rate of the oxygen to alter the dissolved oxygen concentration of the nanobubbles of oxygen in the water.

The invention relates to the field of composite materials, and discloses a light-operated LED filament lamp driving system and a light-operated LED filament lamp, and the light-operated LED filament lamp driving system comprises the following modules: a spectrum sampling module which is used for collecting light intensity data of a plurality of wavelengths in ambient light; the luminous flux calculation module is connected with the spectrum sampling module and is used for calculating real-time environment luminous flux based on the light intensity data and a sensor response function; and the error optimization module is connected with the luminous flux calculation module and is used for calculating a luminous flux error by comparing the real-time environment luminous flux with the target luminous flux and optimizing a dynamic light control threshold according to the error. According to the technical scheme of combining multispectral integral calculation, dynamic threshold adjustment and constant-current driving with PWM dimming, high-precision light detection in a complex light environment, rapid adaptation to dynamic light changes, stable driving of a filament lamp and non-stroboscopic dimming are achieved, meanwhile, false triggering caused by short-time light fluctuation is effectively restrained, and the light-emitting efficiency of the filament lamp is improved. The reliability and the service life of the system are improved.

The invention relates to the technical field of solid crystal glue materials, in particular to a reflective solid crystal glue material based on a nanoparticle dispersion technology, a preparation process and application. The coating comprises a resin matrix, a nanometer functional filler and an auxiliary agent system, wherein the resin matrix at least comprises epoxy resin, cyanate ester resin and benzoxazine resin; the nano functional filler is one of a nano particle material or a nano filler; through the synergistic effect of the surface-modified zinc oxide nanoparticles and the surface-modified cerium oxide nanoparticles and in combination with the total reflection characteristic of the titanium dioxide coated glass beads, an efficient reflection-refraction synergistic enhancement system is constructed; the plasma resonance effect of the surface-modified cerium oxide nanoparticles is matched with the high-refractive-index zinc oxide nanoparticles, so that the initial luminous flux of an LED is improved by 18%-22% compared with that of traditional solid crystal glue, the light utilization rate is improved by 20%-25%, the six-surface luminous potential of a chip is excavated, and therefore the quality of the solid crystal glue is improved.

The invention relates to the technical field of lamps, in particular to a lamp capable of achieving multiple light emitting angles and a light mixing adjusting method. Setting a light emitting angle of the lamp; simulating and calculating the luminous flux proportion of the lamp based on the light-emitting angle; and controlling lamp adjustment based on the luminous flux proportion. Compared with a traditional lamp with a single light-emitting angle which may cause light waste or insufficiency in a specific scene, the lamp with the adjustable light-emitting angle can more accurately meet the lighting requirement, and unnecessary energy consumption is reduced. By introducing an adjustable optical structure, a variable light source layout or an advanced electronic control technology, the light emitting angle of the lamp can be adjusted according to actual requirements. Due to the flexibility, the same lamp can be suitable for various lighting scenes, the lighting effect can be optimized without replacing the lamp, and the problem that an existing lamp can only provide a single light-emitting angle generally is solved.

The embodiment of the invention provides a photoacoustic detection device, which is used for realizing switching between a reflection detection mode and a differential detection mode in the same detection device through a mode switching device, namely realizing two measurement modes in the same detection device. The photoacoustic detection device in the embodiment of the invention comprises a reflection mode detection device used for receiving a reflection light beam of a detection light beam on a to-be-detected object and measuring the light intensity of the reflection light beam; the differential mode detection device is used for receiving a reflected light beam which is generated after the detection light beam is reflected by the to-be-detected object and has a deviated direction, and measuring the luminous flux of the reflected light beam with the deviated direction; and the mode switching device is used for switching between the reflection mode detection device and the differential mode detection device, so that the photoacoustic detection device is in a reflection mode or a differential mode.

The invention discloses an adaptive brightness compensation method for landscape illumination driven by an optical sensor network, relates to the technical field of intelligent illumination control, and is used for solving the problem that an existing landscape illumination system cannot cope with uneven brightness and perception errors in real time. According to the method, illumination images are collected in real time, and brightness information is extracted. And constructing a continuous brightness field and detecting a brightness gradient region. And fusing the winged insect density and the haze ambiguity to evaluate the interference degree, and generating a credibility weight map. On the basis, a brightness compensation matrix is constructed, and compensation parameters are adjusted. And finally, performing optical radiation flux estimation to realize accurate compensation of brightness loss caused by shielding and reflection. The method can effectively improve the adaptability and visual consistency of landscape illumination in a complex environment, and is widely applicable to intelligent illumination scenes such as ecological scenic spots and urban night scenes.

The invention discloses a target surface normal reconstruction method and device based on physical constraints, and belongs to the technical field of three-dimensional target reconstruction. The method comprises the steps of calculating target surface polarization characteristics based on test data of a polarization imaging measurement device; establishing an equation set of the relationship between the target surface normal and the depth; constructing zenith angle constraints based on the luminous flux idea, and correcting the relationship between the target surface normal and the depth by using the zenith angle constraints; constructing a loss function about depth by utilizing convexity prior constraint, and constraining the corrected equation set by utilizing the loss function; and solving the corrected equation set constrained by the loss function by using the target surface polarization characteristics to obtain zenith angle and depth estimation, and determining final target surface normal distribution by using the obtained zenith angle and depth estimation. According to the invention, more accurate normal distribution of the target surface can be obtained.