477 results about "Luminous intensity" patented technology

The invention discloses NnLuz and NnH3H protein mutants and an application of the NnLuz and NnH3H protein mutants in enhancing the bioluminescence intensity of fungi or plants. According to the method disclosed by the invention, core enzymes NnLuz and NnH3H in a fungus bioluminescence pathway are optimized through rational design, and the catalytic efficiency and the luminous intensity of a bioluminescence system are remarkably improved. Experiments prove that 1) the luminous intensity of the NnLuz [delta] N19v2 (I103T / L167K double mutant) in yeast and plants is remarkably superior to that of a reported NnLuzv4 mutant and is 3-4 times that of the reported NnLuzv4 mutant, 2) the catalytic efficiency of the NnH3Hv3 (K307T mutant) is improved by more than 2 times, the luminous stability is remarkably enhanced, and 3) when the NnLuz [delta] N19v2 and the NnH3Hv3 are cooperatively expressed, the luminous intensity of the system reaches the optimal level, and the self-luminous plant with remarkably enhanced luminescence is created.

The invention relates to the technical field of quantum, and particularly discloses a physical structure and function exploration method of a light quantum chip based on an e-p-n quantum entangled state basic particle model. Related quantum characteristics are brand-new interpreted based on the e-p-n quantum entangled state basic particle model, and the physical structure and function exploration method of the light quantum chip based on the e-p-n quantum entangled state basic particle model is established based on the e-p-n quantum entangled state basic particle model. The method comprises the following steps: researching basic modules of a light quantum chip, including generation of light quantum, formation of light quantum bits, a light quantum storage and reading scheme, linear optical quantum calculation, a light quantum chip control module, a substrate material of the light quantum chip and the like, and carrying out deep analysis on a light quantum chip technology; and the color, the luminous intensity, the spatial relative position and the like of an object can be judged due to the capability, and the method can be applied to the fields of visual automatic driving and the like.

The application belongs to the technical field of fluorescent material synthesis, and particularly relates to a blue fluorescent powder with self-activation effect and a preparation method thereof, the chemical formula of the blue fluorescent powder is Li2Mg2W2O9 or Li2Zn2W2O9; the preparation comprises the following steps: 1) according to the chemical proportion of the fluorescent powder, magnesium / zinc source, lithium source and tungsten source are weighed and uniformly ground; 2) the uniformly ground mixed powder is placed into an alumina crucible, sintering is carried out, and the product is fully reacted after heat preservation for a period of time; 3) the product is uniformly ground again after cooling, and the blue fluorescent powder with self-activation effect is obtained. The application utilizes the special lattice structure of the substrate, and obtains the blue fluorescent powder with self-activation effect under an air atmosphere; the generated product has high purity, simple synthesis conditions, low cost and is easy to be prepared on a large scale; the prepared fluorescent powder has a high internal quantum efficiency of 68.7%, high luminous intensity and unique blue light emission characteristics.

The invention discloses a light-emitting substrate and a light-emitting device, and belongs to the technical field of illumination and display. The light-emitting substrate comprises a driving backboard, a first electrode layer, a pixel definition layer and at least two light-emitting functional layers. The pixel defining layer is provided with a plurality of pixel openings and at least two partition structures distributed around the pixel openings, the at least two light-emitting functional layers correspond to the at least two partition structures, and the portions, located in the areas defined by the corresponding partition structures, of the light-emitting functional layers are provided with the pixel openings. The common electrode layer of the light-emitting function layer can be disconnected from the part outside the area defined by the corresponding partition structure, and the electrode part, located in the area defined by the corresponding partition structure, in the common electrode layer of the light-emitting function layer can be electrically connected with the driving backboard. Therefore, the voltage signals loaded on the electrode parts are basically consistent, the luminous intensity of the organic light-emitting layers in different pixel openings is basically the same, and the uniformity of the luminous brightness of the light-emitting substrate is improved.

The invention relates to the technical field of LED display screens, in particular to an LED display screen brightness regulation and control method and device, and the method comprises the steps: obtaining light intensity data which comprises environment light intensity data collected by a distributed sensing assembly and brightness intensity data of display screen partitions; processing the light intensity data of the light intensity data to obtain a brightness uniformity index, and outputting a dynamic adjustment instruction in combination with ambient light intensity data; the dynamic adjustment instruction is converted into a partition driving parameter; and adjusting the brightness level of the partition of the display screen according to the partition driving parameter. Partitioned data acquisition and independent drive design are combined with a brightness uniformity evaluation algorithm and a dynamic adjustment strategy to realize accurate regulation and control of brightness in a complex scene. Meanwhile, a closed-loop feedback correction mechanism is introduced, so that the system stability and response speed are improved. The display effect can be remarkably improved, the user experience is enhanced, and the method is suitable for multi-scene application requirements.

The invention relates to a preparation method of a terbium-doped gadolinium oxysulfide fluorescent material. The performance of the material is remarkably improved through an optimized high-temperature solid-phase method. According to the process, firstly, polyvinylpyrrolidone (PVP) and dopamine hydrochloride are used as a dispersing agent and a coating agent to prepare uniformly dispersed Gd2O3 and Tb4O7 oxide precursors, then through a fluxing agent system with the synergistic effect of boric acid and lithium carbonate and in combination with a low-temperature pre-sintering-medium-temperature vulcanization-high-temperature crystallization three-stage sintering process, grain aggregation and abnormal growth are effectively inhibited, and the Gd2O3 / Tb4O7 composite material is obtained. And finally, annealing in air to remove carbon impurities to obtain the superfine fluorescent powder with small particle size and narrow distribution. Experiments show that the particle size D50 of the fluorescent powder in the embodiment is 496-678 nm, the fluorescence decay life exceeds 1100 microseconds, the luminous intensity is high, the stability is excellent, and the fluorescent powder has wide application prospects in the fields of liquid crystal display, biomedicine and the like.

The invention discloses a pupil adaptive red light regulation and control method and system based on EC film and light source collaboration, and the method comprises the steps: obtaining a visible light image of the eyes of a user through an image collection module, and extracting a real-time pupil state parameter through an image processing module; meanwhile, the ambient light sensing module obtains ambient light intensity data. The cooperative control unit receives the parameters and generates a luminous flux control instruction set containing a first control instruction and a second control instruction based on a safety evaluation model. The first control instruction drives the electrochromic film assembly to change the light transmittance of the red light, and the second control instruction adjusts the luminous intensity of the red light source. Through cooperative control of optical attenuation of the electrochromic film and luminous intensity of the light source, the luminous flux entering the retina can be accurately regulated and controlled in real time according to dynamic changes of pupils, the problem of potential retina light damage risk caused by using a light source with fixed intensity is effectively solved, and the safety of red light irradiation application is remarkably improved.

The invention provides an organic electroluminescent material and an organic electroluminescent device, and belongs to the field of organic electroluminescent materials, and the organic electroluminescent material has a structure as shown in a formula I. The organic electroluminescent material has low refractive index, and can be used as a luminescent auxiliary material and applied to a thicker layer in a double-layer luminescent auxiliary material, so that the organic electroluminescent material can be used as a light-emitting auxiliary material. The light emitted from the device passes through the low-refractive-index film layer of the formula I, the organic electroluminescent device prepared by matching the low-refractive-index film layer with the high-refractive-index light-emitting auxiliary material can play a better light gathering role, the light with the specific wavelength in the light emitted from the device is emitted out, the emission spectrum can be narrowed, the light-emitting intensity of the light with the specific wavelength is enhanced, and the light-emitting efficiency of the organic electroluminescent device is improved. The light loss is reduced, the luminous efficiency of the device is improved, and meanwhile, the lower driving voltage and the longer service life of the device are ensured.

The invention belongs to the technical field of biomolecular interaction detection, and particularly relates to a method for synergistically analyzing a molecular interaction state based on multimodal optical parameters of a rare earth up-conversion nano material. The method comprises the following steps: S1, providing a ligand coated rare earth up-conversion nano material UCNPs probe; s2, enabling the rare earth up-conversion nano material UCNPs probe to be in contact with a solution sample to be detected; s3, exciting the rare earth up-conversion nano material UCNPs probe by using near-infrared pulse laser, and collecting the following optical parameters: luminous intensity change, molecular layer thickness / mass change delta D, luminous life change delta tau and emission peak displacement delta lambda; and S4, based on at least two of the parameters, cooperatively analyzing and judging the interaction state of the ligand on the surface of the probe and the molecules in the solution sample to be detected. The molecular interaction state is synergistically analyzed based on changes of multiple optical parameters, and the technical problem that an existing molecular interaction analysis technology cannot be applied to complex biological samples (serum and cell lysis buffer) is solved.

The invention belongs to the technical field of temperature sensors, and particularly relates to an up-conversion luminescence temperature sensor based on a plasmon effect and preparation and application thereof. The core of the sensor provided by the invention is a composite structure formed by a gold nanorod array and Er < 3 + > and Yb < 3 + > co-doped NaYF4 up-conversion nanoparticles, and the gold nanorod array is prepared by adopting a two-way aluminum oxide template method and is regularly and orderly arranged in a hexagonal shape. Under the excitation of 980nm near-infrared light, the local surface plasmon resonance effect of the gold nanorods can significantly improve the up-conversion luminescence intensity and accelerate the thermal response rate of the sensor; the ratio type temperature sensing system is constructed by detecting the fluorescence intensity ratio of two emission bands of 515-535 nm and 535-555 nm, self-calibration accurate detection within the temperature range of 303-348 K can be achieved, and the sensor has the advantages of being uniform in structure, controllable in preparation, high in detection sensitivity, high in response speed and the like.

The invention relates to the field of agricultural lighting equipment, and discloses a plant light quality regulation and control integrated LED light source with a uniform spectral space and a method of the plant light quality regulation and control integrated LED light source. The multispectral LED chip group is arranged on the lamp bead substrate in a die bonding manner; the plurality of groups of independent bonding pads are arranged on the lamp bead substrate and are electrically isolated from one another; and the transparent optical lens adhesive layer covers the chip group. And different spectrum chip groups in the multi-spectrum LED chip group are electrically connected with the corresponding independent bonding pads respectively. Driving current is provided for the multiple groups of independent bonding pads through an external driving circuit, and the luminous intensity of different spectral components is independently adjusted by independently adjusting the magnitude of the current input to different bonding pad groups, so that the output composite spectrum is changed. According to the invention, the multispectral chip is integrated in a single packaging body, the problem of non-uniform spectral space is solved from the physical source, the accurate regulation and control of the spectral ratio are realized through multichannel independent control, and the design and manufacturing cost of the lamp is reduced at the same time.

An optoelectronic module includes at least one light emitting diode that emits light with a luminous intensity during operation. The optoelectronic module also includes an integrated circuit which sets an operating current of the light emitting diode and measures a value of the forward voltage of the light emitting diode during operation. The integrated circuit determines a degradation of the light emitting diode by measuring the value of the forward voltage and increases or decreases the electrical operating current as a function of the measured value of the forward voltage, such that a change in the luminous intensity due to the degradation is at least partially compensated. The integrated circuit or a measurement-control-unit for controlling the integrated circuit includes a memory in which calibration data is stored. The calibration data comprises a value of the forward voltage of the light emitting diode as a reference value for determining the degradation.

The invention relates to the technical field of semiconductor manufacturing, in particular to a light-emitting diode and a light-emitting device. The light-emitting diode at least comprises an epitaxial laminated layer; the epitaxial laminated layer comprises an N-type semiconductor layer, an active layer and a P-type semiconductor layer which are laminated in sequence; the active layer comprises at least one first-class quantum well layer and at least one second-class quantum well layer, the In concentration of the first-class quantum well layer is larger than that of the second-class quantum well layer, and the first-class quantum well layer is not in direct contact with the surface of the N-type semiconductor layer. According to the light-emitting diode provided by the invention, through the position design of the first type of quantum well layer, the influence of the quantum limited stark effect on the first type of quantum well layer with relatively high In concentration can be effectively relieved, the regulation and control of the carrier injection level are improved, the luminous intensity proportion is effectively adjusted, and the color rendering property of a device is improved.

The utility model provides a blood oxygen simulation device based on a multipath light device feedback regulation circuit, which belongs to the technical field of electronic control and comprises a light-emitting driving module, a feedback regulation module and a light-emitting tube. The feedback adjustment module comprises a first feedback adjustment sub-module and a second feedback adjustment sub-module; the light-emitting driving module is electrically connected to the first end of the light-emitting tube and is used for collecting a light signal emitted by the to-be-tested equipment and driving the light-emitting tube to emit light; one end of the first feedback adjustment sub-module is electrically connected to one end of the second feedback adjustment sub-module; the first feedback regulation sub-module is used for carrying out feedback regulation on the light-emitting tube according to the light-emitting intensity of the light-emitting tube; and the second feedback regulation sub-module is used for carrying out feedback regulation on the light-emitting tube according to the intensity of the current flowing through the light-emitting tube. According to the utility model, through multi-dimensional feedback adjustment, the light intensity and the current intensity of the light-emitting tube are controlled, and the precision and the stability of the device are improved.

The invention belongs to the technical field of material physics, and particularly relates to a triboelectroluminescence composite material, a preparation method thereof and a triboelectroluminescence tactile device. The triboelectric electroluminescent composite material is formed by compounding a polymer matrix, a triboelectric reinforcing filler and fluorescent powder, the frictional electricity reinforcing filler is polytetrafluoroethylene; the fluorescent powder is ZnS: Cu; and the polymer matrix is polyvinylidene fluoride-hexafluoropropylene. The triboelectroluminescent composite material is used as a luminescent layer and a triboelectrification layer, and the triboelectroluminescent tactile device constructed by the triboelectroluminescent composite material and a friction material shows an ultra-low pressure detection limit of 0.42 Pa; and along with the increase of the pressure intensity, the output optical signal and electric signal are stronger. The strongest luminous intensity of the triboluminescence tactile device is 1.25 times of the indoor light intensity, and the triboluminescence tactile device can obviously emit light in outdoor sunlight.

A method for monitoring laser processing quality is disclosed. The method includes: detecting, when a present laser processing process is executed, a luminous intensity of reflected light of each laser pulse on a processed surface of a product sequentially; comparing the luminous intensity of the reflected light of each laser pulse with a preset luminous intensity sequentially, and determining whether the luminous intensity of the reflected light of a corresponding laser pulse reaches a standard; counting the number of laser pulses reaching the standard; and determining whether the number of the laser pulses reaching the standard is within a preset range. A device for monitoring laser processing quality, a processing apparatus, and a storage medium are also disclosed.

In some examples, the method for tone mapping a high dynamic range (HDR) image to a lower dynamic range image (TDR) comprises obtaining a luminous intensity image based on the HDR image, processing the luminous intensity image using a feature extractor network, whereby to generate a feature map, processing the feature map using at least one neural network module of multiple neural network modules, obtaining a tone mapping operator based on an output of the at least one neural network module of the multiple neural network modules, and applying the tone mapping operator to the HDR image, whereby to obtain the TDR image, wherein the tone mapping operator comprises a tone mapping curve.

The present invention relates to a recombinant construct comprising: a first expression cassette comprising a fluorescence enhancing factor; wherein the amino acid sequence of the fluorescence enhancement factor is as shown in SEQ ID NO: 2, or an amino acid sequence which at least has 60%, 65%, 70%, 75%, 80%, 85% or 90% identity with the SEQ ID NO: 2 and is functionally equivalent to the protein as shown in the SEQ ID NO: 2; the first expression cassette is configured to increase the self-luminous intensity of a plant, plant tissue, or cell. According to the application, the LumEnhancer gene is further introduced on the basis of an FBP biological self-luminous system, so that the physiological activity of transgenic plant cells is effectively improved, and the energy metabolism level of the plant is further enhanced, thereby providing a more sufficient energy basis for a bioluminescence reaction and effectively enhancing the luminous intensity of the whole plant.

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 invention discloses an interactive method and system for automotive taillights with anti-glare and active warning functions. Addressing the problem that single-dimensional dimming based solely on ambient illuminance is insufficient to simultaneously address glare from following vehicles and glare caused by sudden brightness spikes from brake lights, this invention detects the relative distance, relative azimuth angle, and visibility of the following vehicle to determine the driver's eye position area. Based on the inverse square ratio, cosine incidence, and propagation transmission triple attenuation, the current luminous intensity of the taillight is converted into an estimated eye position illuminance. When the estimated eye position illuminance is not less than a first preset threshold, the luminous intensity is reduced without falling below a second preset threshold. During brake light spikes, the rate of increase in estimated eye position illuminance is limited to a third preset threshold to suppress transient glare. Based on the calculated collision time, a rear-end collision warning is output when it is not greater than a fourth preset threshold. This unified illuminance measurement supports both anti-glare and warning functions, achieving a balance between anti-glare and driving safety without the need for a neural network.

The invention relates to a perovskite quantum dot capable of improving luminous intensity through light driving and a preparation method thereof, the perovskite quantum dot comprises a micro / mesoporous template and perovskite nanocrystals located in pore channels of the micro / mesoporous template, and tungstate ions are loaded in the pore channels of the micro / mesoporous template; under the irradiation of blue light, B-site metal cations in the perovskite nanocrystals react with tungstate ions to form a BWO4 passivation layer. According to the invention, the formation of the BWO4 passivation layer in the micro / mesoporous template is driven by blue light illumination, and the surface defects of the perovskite quantum dots are passivated, so that the luminous efficiency of the perovskite quantum dots is further improved.

The invention belongs to the technical field of microcrystalline glass materials, and particularly discloses rare earth doped silicate system high-crystallinity transparent microcrystalline glass and a preparation method thereof. The microcrystalline glass is prepared from the following raw materials: black talcum powder, CaO, AlF3, YF3, rare earth ions, graphite powder, Si3N4, a clarifying agent, micron-sized seed crystals and the like through a high-temperature melting process and controllable nucleation-crystallization. The preparation method is simple, the used raw materials are rich, the preparation process is simple, and the prepared high-crystallinity transparent microcrystalline glass can be effectively excited by 420 nm purple light and has the characteristics of high crystallinity, high transmittance, high luminous efficiency, excellent thermal quenching resistance and the like. A main crystal phase is CaAl2Si2O8 and a small amount of YF3, the crystallinity is larger than or equal to 70 vol.%, the transmittance of a 1 mm sample is larger than or equal to 80%, the emission peak value is adjustable between 480 nm and 520 nm, the internal quantum efficiency is larger than or equal to 80%, the luminous intensity at the temperature of 150 DEG C is 85% or above of the luminous intensity at the room temperature, and the material can be widely applied to the fields of white light illumination, screen display and the like.

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 invention provides a sky-green light source LED packaging device, and belongs to the technical field of luminescent materials. The azure light source LED packaging device comprises a light-emitting substrate, wherein the light-emitting substrate comprises fluorescent powder; the fluorescent powder comprises blue-green fluorescent powder and green fluorescent powder; the light-emitting peak wavelength of the blue-green fluorescent powder is 490-500 nm, the molecular formula of the blue-green fluorescent powder is (Ba1-x-ySrxEuy) Si2N2O2, and x is greater than or equal to 0.001 and less than or equal to 0.3; 0.001 < = y < = 0.1; the blue-green fluorescent powder is of an orthogonal structure and is crystallized in a space group Pcca. According to the invention, on the basis of realizing azure luminescence, the luminescence performance of the azure luminescence is improved, especially the luminescence intensity of the azure luminescence is improved, and the anti-aging performance of the azure light source LED packaging device is also improved.

The utility model discloses a telescopic height-adjustable down lamp. The telescopic height-adjustable down lamp comprises a lamp body, an adjusting device and a lamp holder, one end of the adjusting device is connected with the lamp body, and the other end is connected with the lamp cap; the adjusting device comprises a first adjusting cylinder, a second adjusting cylinder and a third adjusting cylinder, one end of the first adjusting cylinder is fixedly connected with the lamp body, one end of the second adjusting cylinder is slidably connected with the first adjusting cylinder, and one end of the second adjusting cylinder is arranged in the first adjusting cylinder and limited in the first adjusting cylinder; one end of the third adjusting cylinder is slidably connected with the second adjusting cylinder, one end of the third adjusting cylinder is arranged in the second adjusting cylinder and limited in the second adjusting cylinder, and the other end of the third adjusting cylinder is connected with the lamp holder. The reflecting cover reflects light of the LED lamp beads, so that the light of the LED lamp beads is more concentrated; the dial switch can adjust the luminous intensity of the LED lamp beads; and the length of the down lamp is adjusted through the first adjusting barrel, the second adjusting barrel and the third adjusting barrel, the down lamp can adapt to lamp barrels with different depths, applicability is higher, and the application range is wider.

The invention provides a light-emitting device which is bright in both scotopic vision and photopic vision and reduces dazzling to people. The light-emitting device includes a light-emitting element having a dominant wavelength in the range of 430 nm to 500 nm, and a phosphor excited by light from the light-emitting element and having an emission peak wavelength in the range of 507 nm to 660 nm, and emits light having a dominant wavelength in the range of 490 nm to 500 nm. The S / P ratio, which is the ratio of the luminous flux in scotopic vision to the luminous flux in photopic vision, is 6.5 or less, and the luminous intensity at the luminous peak wavelength of the light-emitting element is higher than the luminous intensity at the luminous peak wavelength of the phosphor.

The present invention addresses the problem of providing an image display device and AR glasses that are both capable of displaying a virtual image so as to be superimposed on a real image, are compact, and have excellent luminance uniformity of the virtual image. The image display device according to the present invention includes at least: a display element; a diffraction element including an optically anisotropic layer for changing the angular characteristics of luminous intensity in an image displayed by the display element; a beam splitter that reflects at least a portion of the image in which the angular characteristics of luminous intensity were changed by the diffraction element; and a half mirror that reflects, toward the beam splitter, at least a portion of the image reflected by the beam splitter. The optically anisotropic layer has a liquid crystal alignment pattern including a region in which the orientation of an optical axis derived from a liquid crystal compound changes while continuously rotating along at least one in-plane direction.

The present invention provides: a scintillator which is reduced in the intensity of the afterglow, while having increased luminous intensity; and a charged particle radiation apparatus. A scintillator according to the present invention is characterized in that: a base material, a buffer layer, a light emitting part and a first conductive layer are sequentially stacked in this order; the light emitting part contains one or more elements that are selected from the group consisting of Ga, Zn, In, Al, Cd, Mg, Ca and Sr; and a second conductive layer is provided between the base material and the light emitting part.

To provide an onium salt used for a chemically amplified resist composition excellent in solvent solubility, having high sensitivity and high contrast and excellent in lithography performance such as LWR, CDU, MEF, EL and DOF in photolithography using high energy rays, a chemically amplified resist composition containing the onium salt as a photoacid generator, and a pattern forming method using the chemically amplified resist composition.SOLUTION: An onium salt having the formula (1): SELECTED DRAWING: None