73 results about "Luminous intensity" patented technology

The application belongs to the field of scintillator material preparation, and particularly relates to a manganese-based pixelated scintillator array and a preparation method and application thereof. The (BuTPP)2MnBr4 scintillator material in a molten state is filled into a quartz glass cavity by capillary action, and a glass scintillator matrix is formed by cooling and quenching; then, in-situ crystallization is realized in the glass scintillator by using femtosecond laser direct writing processing, and a pixelated array is precisely constructed. The in-situ crystallization induced by the femtosecond laser significantly improves the photoluminescence intensity and the radiation luminescence intensity of the material, effectively solves the problems of low luminescence efficiency, high pixelation processing difficulty and poor crystallization controllability of the traditional glass scintillator, and the prepared pixelated scintillator array has stable optical performance and clear pixel boundary, is suitable for X-ray imaging, radiation detection and the like, and has simple preparation process and strong controllability of parameters, thereby providing a new implementation method for the preparation of arrayed X-ray scintillators.

This application relates to the field of scanner image acquisition technology, and in particular to a method and apparatus for dynamic compensation of exposure time of a reverse-side CIS sensor. The method is applied to a duplex automatic document feeder scanning system, which is equipped with independent CIS sensors for the front and back sides to achieve synchronous scanning of the front and back sides. The method includes: upon receiving a duplex scanning task instruction initiated by a user, obtaining the current relative luminous intensity of the reverse-side CIS sensor LED based on the current cumulative illumination time of the LED and a pre-stored attenuation curve model of the reverse-side CIS sensor LED; obtaining the compensated exposure time based on the current relative luminous intensity and pre-stored initial parameters of the reverse-side CIS sensor; and controlling the reverse-side CIS sensor LED to illuminate according to the compensated exposure time, thereby achieving exposure compensation and image quality maintenance of the reverse-side image during duplex scanning.

The application discloses a fluorescent probe molecule luminous intensity quantification method and system, and belongs to the technical field of fluorescent probes. The fluorescent probe molecule luminous intensity quantification method comprises the following steps: building an initial structure of a fluorescent probe molecule and performing molecular dynamics simulation, uniformly extracting a plurality of molecular conformations from a motion trajectory; performing excitation state property calculation on each molecular conformation, extracting an excitation wavelength and an excitation intensity corresponding to a maximum excitation state oscillator strength; performing excitation state geometry optimization on each molecular conformation, extracting an emission wavelength, an emission intensity and an emission energy; calculating a luminous intensity coefficient based on the wavelength parameter, the intensity parameter and the energy parameter; evaluating the luminous performance of the probe molecule according to the luminous intensity coefficient, and screening a probe molecule with the largest luminous intensity coefficient as a target probe. The application can convert a dynamic effective object which is difficult to directly measure into a numerical form which can be measured and calculated, and realizes the standardization, dynamicization and repeatable quantitative characterization of the luminous intensity of the probe molecule.

This invention relates to the field of optical inspection technology, specifically to a micro LED wafer-level rapid defect localization system based on photoluminescence. A broadband pulse excitation module outputs pulsed laser light matching the characteristics of the material under test; a two-dimensional scanning platform carries the wafer and achieves nanometer-level precise positioning; a time-resolved acquisition module collects fluorescence signals and converts them into time-resolved photoluminescence data; a data processing and control module synchronously controls the operation of each module, receives and processes the time-resolved photoluminescence data, extracts the transient luminescence intensity and carrier lifetime of each detection point, compares the two-dimensional feature vector formed by these two parameters with a preset defect feature database, identifies the defect type of each micro LED chip, and generates a wafer-level defect fingerprint spectrum. This system can accurately distinguish different types of failure modes such as epitaxial defects, surface state defects, and poor electrode contact, significantly improving detection efficiency and defect classification accuracy.

A device for examining samples is disclosed, comprising a microarray, an excitation light source, and an image sensor (10). The image sensor (10) has a plurality of SPAD arrays (11), a plurality of additional photodiodes (12), and computing electronics. The SPAD arrays (11) are configured to detect the decay behavior of fluorescence light emitted as a result of irradiation with excitation light (L) in a respective detection area of ​​the SPAD array (11). The additional photodiodes (12) are configured to measure the respective intensity of the excitation light (L) incident on each of them. The computing electronics are configured to determine a normalized decay behavior of fluorescence light for one or more of the SPAD arrays (11) from the detected decay behavior and at least one of the measured intensities of the excitation light (L).Furthermore, a method for examining a sample is disclosed.

The present application provides a kind of active energy ray curable ink composition containing near infrared fluorescent pigment, which has strong fluorescence emission intensity in near infrared light region and maintains long-term, and can be visually recognized under near infrared light.The solution is an active energy ray curable ink composition containing near infrared fluorescent pigment and polymerizable compound, wherein the near infrared fluorescent pigment is selected from one or more of the following compounds represented by general formula (I1)-(I4), and the maximum fluorescence wavelength of the near infrared fluorescent pigment is 650 nm or more (wherein R a ~R s The definition is described in the specification).[Chemical 1]

The utility model provides a kind of for detecting nitrate flow cell, comprising: flow cell body;The liquid flow passage of the flow cell body is penetrated, the liquid flow passage includes the liquid inlet, the detection flow passage of straight line type and the liquid outlet that are sequentially connected;Lamp bead and photodiode component are respectively located at the detection flow passage both ends, LED chip and photodiode chip are encapsulated in the lamp bead.This utility model simultaneously encapsulates LED chip and photodiode chip in lamp bead, so that when detecting liquid absorbance, the initial absorbance of liquid detected by photodiode component can be corrected according to the luminous intensity of LED chip detected by photodiode chip, so as to ensure the accuracy of nitrate detection;Moreover, the structure of flow cell is relatively simple and has high integration, can have smaller equipment volume, be convenient for being connected with other detection equipment, and has lower production and detection cost.

The application relates to a ratio type radiation sensing device with nonlinear response to dose rate and a use method thereof, and relates to a scintillator radiation measuring device with nonlinear change of luminous intensity and use method, and aims to solve the technical problems of low measuring precision, complex structure, poor reliability, poor real-time performance and poor applicability of existing radiation sensors. The ratio type radiation sensing device with nonlinear response to dose rate comprises an X-ray excitation module, a mixed sensing probe and a light signal collection module; wherein the mixed sensing probe is a round piece pressed by uniformly mixing NaLuF4:3Pr,5Er nanocrystals and NaLuF4:3Ce nanocrystals. The use method of the device is a standard curve method. The device can realize accurate detection in a wide range of 1.86-14.95 mGy / s, and can be used in the fields of environmental monitoring, biomedical imaging and public security inspection.

Light source for illuminating at least one kitchen module, wherein the light source has a ribbon-like structure, wherein the light source comprises at least two segments, wherein the segments can be controlled individually and / or in combination with respect to a luminous intensity and / or a luminous color and / or a temporal luminous gradient and / or a spatial luminous gradient.

A simulation equipment for hot and humid marine environment and radiation intensity prediction method thereof, which can simultaneously load the working environment factors including voltage, current, temperature, humidity, salt spray, and UV radiation for the tested electrical equipment. The radiation intensity prediction method can predict the UV radiation intensity at the target position of the tested electrical equipment under the influence of different temperature and humidity and salt spray concentration on the attenuation of UV light radiation, so as to accurately obtain the UV radiation intensity qt at the target position of the tested electrical equipment during material corrosion and aging tests. Moreover, the UV radiation intensity qt at the target position of the tested electrical equipment can be adjusted to the target UV radiation intensity by correspondingly enhancing or weakening the luminous intensity of each UV fluorescent lamp tube.

A light emitting apparatus includes: a light transmissive layer that transmits light; and a light emitting module disposed on the light transmissive layer and having a light emitting surface that generates the light. The light emitting module includes: a plurality of light emitting devices that generate the light; and an optical layer for refracting the light generated from the plurality of light emitting devices. The optical layer is configured to refract the light generated from the plurality of light emitting devices such that a luminous intensity of the light traveling in a direction inclined at a predetermined angle with respect to a virtual line perpendicular to the light emitting surface is greater than a luminous intensity of the light traveling in a direction in which the virtual line extends.

The application discloses a kind of marine multi-parameter detection sensors based on alternating current electroluminescence, including ACEL light-emitting unit, excitation unit, optical detection unit, signal processing unit and packaging shell.The light-emitting layer of ACEL light-emitting unit includes multiple light-emitting regions, each light-emitting region is doped with the material sensitive to salinity, pH value, temperature, and the light-emitting characteristic changes with the change of corresponding parameter.Excitation unit applies alternating current excitation signal to ACEL light-emitting unit, and optical detection unit collects the light-emitting intensity signal of each light-emitting region, and signal processing unit outputs the detection result of salinity, pH value and temperature according to the pre-stored mapping relationship.The application realizes the synchronous detection of seawater multi-parameter through single sensor, has the advantages of simple structure, fast response speed, strong environmental adaptability and low cost, and is suitable for real-time monitoring field in marine environment.

The application relates to a method for predicting and regulating the up-conversion nanomaterial mixed system light-emitting life, and the specific method is as follows: first, synthesizing NaYF4-based up-conversion nanoparticles with different rare earth ion doping ratios, the two kinds of nanoparticles have different light-emitting lives; then, mixing the two kinds of up-conversion nanoparticles to obtain a life attenuation curve and a convolution fitting curve; combining the light-emitting intensity proportion of the two kinds of nanoparticles in the mixed system, the light-emitting life of the mixed system can be predicted, and the mixed system can also be designed according to a target light-emitting life. The method can continuously adjust the life, does not need a large amount of synthesis, and improves the optical code capacity in subsequent anti-counterfeiting, information encryption and the like.

The application relates to a display panel and a display device. The display panel comprises a light-emitting layer, a light-transmitting layer and a peep-proof layer, the peep-proof layer comprises a plurality of peep-proof units arranged in an array, the peep-proof units have first arc-shaped curved surfaces, the first arc-shaped curved surfaces can reflect each large-angle light ray emitted via an emitting surface of the light-emitting layer, and the angle between the propagation direction of the light ray after reflection and the display normal viewing angle is reduced, so that the viewing angle range of the display panel is reduced, and the peep-proof of the display panel is realized. Key is that the peep-proof layer of the embodiment of the application realizes the peep-proof of the display panel by reflecting the light ray, can effectively emit the large-angle light at the normal viewing angle, avoids the problem of light loss, and also improves the light-emitting intensity at the normal viewing angle, thereby relieving the problem of reduced light-emitting brightness of the display panel caused by the peep-proof, and enhancing the user experience.

The present application relates to quantum dot light emitting diode (QLED) device characterization technology, in particular to a kind of with quantum dot light emitting diode electroluminescence imaging method.The present application aims to study the relationship between light intensity and dynamic parameter distribution in QLED electroluminescence (EL) process, to guide the preparation optimization of QLED device.The present application successfully realizes the above function by combining function generator with traditional fluorescence imaging system.The innovation of prior art is that function generator is used to generate pulse voltage to excite QLED sample, and fluorescence imaging system is combined to detect the EL imaging of QLED, and the imaging result of EL dynamic parameter is obtained by analysis software fitting.Through the statistics of the spatial distribution of QLED EL dynamic parameter and luminous intensity, the key factors affecting luminous intensity can be identified, thereby effectively guiding the optimization preparation process of QLED device.

Disclosed in the present disclosure is a display panel and a display device. The display panel includes a substrate, a pixel-defining layer, a plurality of light-emitting elements, a compensation light source, an encapsulation layer, and a light-shielding layer. The light-shielding layer is disposed on the compensation light source and located in a non-opening area for blocking outgoing light emitted perpendicular to the substrate from the compensation light source. The compensation light source is configured to provide preset angle compensation outgoing light to the plurality of light-emitting elements when two adjacent light-emitting elements are displayed, where an area of the compensation outgoing light varies with the light emitting intensity of adjacent light-emitting elements. At least one first compensation light source and one second compensation light source are arranged between two adjacent light-emitting elements.

This application discloses a light source intensity calibration method, storage medium, and program product, relating to the field of smart wearable technology. The method includes: adjusting an environmental simulation device to a preset normal lighting environment and obtaining a preset calibration white card; detecting the reflected light intensity of infrared light from the calibration white card using a photosensor; increasing the luminous intensity of the infrared light source until the reflected light intensity is greater than or equal to a preset standard light intensity, and determining the luminous intensity as the target light intensity of the infrared light source. This application controls the luminous intensity of the infrared light source to the minimum necessary brightness sufficient to achieve stable recognition, which can reduce the problem of accidental touches caused by changes in light.

With the invention, the afterglow of a fluorophore can be visualized by observation with a rolling-shutter camera under pulsed illumination. Image sections captured during a dark phase contain only the light emitted by long-lived fluorophores. This enables the imaging acquisition of long-lived fluorescence using inexpensive, widely available CMOS cameras without moving parts and without image intensifiers and without synchronization of camera and pulsed illumination.

The application discloses a preparation method of a gallium germanate near-infrared luminescent material, and the luminescent material has a chemical formula of Ga 3+x‑y Al 3‑ x Ge2O 13 : y Cr 3+ According to a stoichiometric ratio of each raw material in the chemical formula, each raw material is weighed, Ga is introduced through an oxide, Al is introduced through an oxide or a hydroxide, Ge is introduced through an oxide, and Cr is introduced through an oxide or a nitrate; the raw materials are fully mixed and ground to obtain a raw material powder; the raw material powder is kept at a certain temperature in an air atmosphere, is cooled to room temperature in a furnace, is ground, and the near-infrared luminescent material is prepared. The preparation method can obtain the near-infrared luminescent material which has the advantages of a spectrum peak greater than 800 nm, adjustable spectrum, high luminescent efficiency (an external quantum efficiency is greater than 30%), good thermal stability (a residual luminescent intensity at 150 o C is greater than 60% at room temperature), can be efficiently excited by a blue light chip, and the like, can be applied to biological imaging, plant illumination, night monitoring and food detection, the preparation method is simple, no waste water and waste gas are discharged, and the preparation method is suitable for large-scale industrial production.

The application discloses a fluorescent probe molecule luminous intensity quantification method and system, and belongs to the technical field of fluorescent probes. The fluorescent probe molecule luminous intensity quantification method comprises the following steps: building an initial structure of a fluorescent probe molecule and performing molecular dynamics simulation, uniformly extracting a plurality of molecular conformations from a motion trajectory; performing excitation state property calculation on each molecular conformation, extracting an excitation wavelength and an excitation intensity corresponding to a maximum excitation state oscillator strength; performing excitation state geometry optimization on each molecular conformation, extracting an emission wavelength, an emission intensity and an emission energy; calculating a luminous intensity coefficient based on the wavelength parameter, the intensity parameter and the energy parameter; evaluating the luminous performance of the probe molecule according to the luminous intensity coefficient, and screening a probe molecule with the largest luminous intensity coefficient as a target probe. The application can convert a dynamic effective object which is difficult to directly measure into a numerical form which can be measured and calculated, and realizes the standardization, dynamicization and repeatable quantitative characterization of the luminous intensity of the probe molecule.

A dark spot detection method and apparatus for a display panel and a computer-readable storage medium. The dark spot detection method includes: acquiring first luminances of multiple sub-pixels at a first viewing angle; acquiring a first mapping relationship between first distance and chief ray angle, wherein the first distance is a distance from a sub-pixel to a center of a display area, the chief ray angle is an included angle between a direction in which luminous intensity of the sub-pixel is greatest and a direction perpendicular to the display panel; acquiring luminances of a single sub-pixel at multiple viewing angles, obtaining a second mapping relationship between viewing angle and luminance of the single sub-pixel; determining second luminances of multiple sub-pixels at chief ray angles according to first luminances, first mapping relationship, and second mapping relationship, marking a sub-pixel whose second luminance is lower than a luminance threshold as dark spot.

The application belongs to the technical field of fluorescent pigments, and particularly discloses a yellow composite fluorescent pigment for improving luminous intensity and a preparation method thereof, which comprises the following steps: preparing yellow fluorescent powder: taking Y2O3, Al(NO3)3.9H2O and Ce(NO3)3.6H2O, BaF2 and NH4F, and sintering; preparing blue fluorescent powder: taking BaMgAl 10 O 17 ∶Eu 2+ taking raw materials, adding BaF2 and NH4F, and sintering; preparing film raw materials; compounding and curing: mixing the yellow fluorescent powder and the blue fluorescent powder at a mass ratio of 1:0.5-2, adding the mixed fluorescent powder into the film raw materials, and performing high-temperature solid-phase treatment. The yellow composite fluorescent pigment for improving luminous intensity and the preparation method thereof can overcome the problems of low color temperature and low color rendering index of the traditional yellow fluorescent powder, improve the luminous intensity of the yellow fluorescent powder, and expand the spectral response range of the yellow fluorescent powder.

The present application relates to the technical field of solid light emitting material, in particular to a kind of blue-green adjustable light emitting perovskite quantum dot borosilicate glass material and its preparation method and application.The present application is by CsPb(Cl / Br)3 perovskite quantum dot is doped into borosilicate glass, not only improve the environmental stability of blue-green adjustable light emitting perovskite quantum dot borosilicate glass material, effectively exert the photoelectric performance of perovskite quantum dot.Moreover, the blue-green adjustable light emitting perovskite quantum dot borosilicate glass material provided by the present application has excellent temperature resilience, when it is heated from room temperature to 280 DEG C and then cooled to room temperature, the luminescent intensity when cooling is comparable to the luminescent intensity in the heating process at the same temperature.

The application discloses a light control method and system for preventing glare of a motorcycle lamp, and the method comprises the following steps: acquiring multiple modal sensing data in front of the motorcycle in real time when the motorcycle is running; determining corresponding running state parameters of the motorcycle according to the sensing data; identifying the data of a coming vehicle object in front of the motorcycle according to the sensing data based on a target recognition algorithm; determining a light shielding strategy of the motorcycle according to the running state parameters and the data of the coming vehicle object; and the light shielding strategy is used to determine the luminous intensity parameters of at least one area of the lamp of the motorcycle. It can be seen that the application can realize intelligent light self-adaptive control driven by front perception, improve the safety of night driving and the protection effect of oncoming vehicles, and reduce the risk of accidents caused by unshielded glare.

The photographing device (15) of the present application is provided with a camera (30), light sources (21-23), a band-pass filter (31), and a conversion unit (60). The camera (30) is provided with an image sensor (33) having a color filter of N bands (N is a natural number of 3 or more). The light sources (21-23) of M types (M is a natural number of 2≦M≦N) have emission spectrum characteristics each having a peak in a different wavelength region from each other within a visible light region and a near-infrared region. The conversion unit (60) performs matrix operation on a photographing signal (S1) of N bands obtained by the image sensor (33) when the camera (30) photographs an article (12), thereby generating image signals of M bands each having a spectral sensitivity in a different wavelength region from each other. The light directions and the emission intensities of the light sources (21-23) are selected respectively.

The present application relates to display control technical field, specifically to a kind of LCD display brightness control method and system, method is applied to the display device containing direct backlight module and liquid crystal panel, backlight module is the multi-partition light source of independently adjustable brightness, method includes: constructing backlight module diffusion simulation module, based on point spread function to backlight brightness distribution diffusion obtains backlight output image;Utilize training sample to train HDR reconstruction model and local dimming model, HDR reconstruction model is based on saturation discrimination generation feature mask and is propagated in convolution feature extraction to inhibit saturated area feature, local dimming model generates supervision signal by means of diffusion simulation module and is updated with the loss function containing image fidelity term and power consumption constraint term;Display stage carries out luminance correction to input low dynamic range image and combines feature mask and exports target HDR image;Again output backlight prediction image and obtain backlight output image by diffusion simulation;According to the partition topological partition convergence forms backlight control image, and by target HDR image and backlight output image generates liquid crystal panel control image representation pixel transmittance;Accordingly drive each partition luminous intensity and each pixel transmittance, realize backlight and liquid crystal collaborative modulation output display image.The present application generates backlight partition control and liquid crystal panel transmittance control, so that display output approximates target HDR image and gives consideration to power consumption constraint and halo artifact suppression.