32 results about "Spectral conversion" patented technology

The invention provides a spectrograph, a spectrum reconstruction method and device and electronic equipment, and relates to the field of spectrum analysis. The spectrograph comprises a chip and a peripheral circuit, the chip comprises a photoelectric response layer, a gate layer and an electrode lead-out layer, and a target semiconductor is arranged in the photoelectric response layer; the photoelectric response layer is used for converting an incident spectrum into a photocurrent signal; the gate layer is used for changing the photoelectric response characteristic of the target semiconductor and covers the upper and lower surfaces of the photoelectric response layer; the electrode lead-out layer is used for outputting the photocurrent signal to external equipment, and the external equipment is used for reconstructing an incident spectrum according to the photocurrent signal and the photoelectric response characteristic of the target semiconductor; the peripheral circuit is used for maintaining the chip to work. According to the invention, the semiconductor with adjustable photoelectric response characteristics is used as the core of the photoelectric response layer, so that the spectrometer has the spectral analysis capability from infrared to terahertz wave bands, does not need to depend on a huge optical assembly and a precise mechanical displacement assembly, and can effectively solve the problems in the prior art.

The invention provides a method and system for identifying sorghum varieties based on spectrum reconstruction and a storage medium, and belongs to the technical field of sorghum variety identification. The method comprises the following steps: acquiring hyperspectral data of a sorghum grain sample and a corresponding pseudo RGB image through a hyperspectral image acquisition system; a mapping relation between pseudo RGB and hyperspectral data is established by using an ASTEM-MST + + model, a spectrum reconstruction model is established, and the ASTEM-MST + + model integrates an adaptive feature enhancement module into a multi-stage spectrum converter network, so that the sorghum spectrum reconstruction quality is improved. A real RGB image of a sample collected by an industrial camera replaces a pseudo RGB image to be input into a reconstruction model, corresponding hyperspectral data is reconstructed, then a region of interest is obtained, spectral data is extracted, variety labels are calibrated and then input into an SSA-RF model for training, a variety identification model is constructed, and the sorghum variety is identified.

The application discloses a kind of gas isotopic ratio measurement system and method, it relates to gas isotopic measurement technical field, in the system, double-layer sealed panning gauge is used to obtain the mixed gas to be measured, after energization, make the mixed gas to be measured occur panning discharge, produce the light signal containing each isotopic characteristic spectrum;Double-layer sealed panning gauge includes gauge tube, coaxially arranged inner layer sealing structure and outer layer sealing structure;Lens group is used to collect and focus light signal;Optical fiber is used for remote transmission light signal collected by lens group;Spectrometer is used for the light signal transmitted by optical fiber is spectrally resolved, forms the spectrum according to wavelength development;Photoelectric detector is used to convert spectrum into electrical signal;Computer is used to determine the proportion of each isotopes in the mixed gas to be measured according to electrical signal.The application realizes redundancy protection by double-layer sealing structure, ensures that discharge condition is stable under harsh environment, prevents gas leakage, realizes high-precision and safe measurement of gas isotopic ratio under high-risk scene.

The invention discloses a pulsed light hair removal system based on spectrum conversion and a control method thereof. The system comprises a pump light source module, a spectrum conversion module, an image acquisition module and a processor. The system provided by the invention has a pixel-level accurate control capability, the accuracy is greatly improved compared with the traditional IPL, and pixel-level energy self-adaption is realized, so that personalized treatment is supported. The system also supports sliding continuous irradiation, can greatly shorten the treatment time, has the advantages of high energy efficiency ratio, small invalid irradiation area, low pain feeling and the like, and can effectively reduce unnecessary thermal stimulation.

The application discloses a kind of fast real-time detection light conversion agent method, suitable for sunlight greenhouse and photovoltaic cell field.Light conversion agent absorbs specific waveband light under sunlight and emits another waveband light, but existing technology cannot reflect its spectral conversion effect in real time, intuitively, and is prone to cause ultraviolet visible diffuse reflectance spectrum distortion due to emission light being too strong, with more than 100% abnormal phenomenon.The method uses ground object spectrometer, first tests standard whiteboard reflectance spectrum and normalizes processing, secondly uses standard spectral sample to calibrate, then tests light conversion agent sample, obtains the superposition figure of reflected spectrum and emission spectrum, and intuitively presents spectral conversion effect.Through dynamic adjustment of measurement parameter, adapt to different light conditions, ensure measurement accuracy.The application has the characteristics of fast, intuitive, strong environmental adaptability, can effectively avoid reflectance spectrum distortion, and provides efficient detection means for light conversion agent research and application.

The invention belongs to the technical field of near-infrared spectrum calibration transfer, and particularly relates to a CycleGAN-based non-standard near-infrared spectrum calibration transfer method and a CycleGAN-based non-standard near-infrared spectrum calibration transfer system. Obtaining a non-standard spectrum of a near-infrared spectrometer serving as source equipment, naming the non-standard spectrum as a source domain spectrum, inputting the source domain spectrum into the trained calibration transfer model, and converting the source domain spectrum into a spectrum with target domain spectrum distribution characteristics; the calibration transfer model is constructed based on the CycleGAN, and the identity mapping loss used by a generator in the CycleGAN is optimized for representing the difference between the source domain spectrum and the output of the source domain spectrum input to the generator mapping the target domain spectrum to the source domain. And the difference between the target domain spectrum and the output of the target domain spectrum input to a generator mapping the source domain spectrum to the target domain, and the weight corresponding to the identity mapping loss is a positive number at the initial stage of training and is set to be 0 after the initial stage of training. According to the invention, unnecessary distortion of the spectrum shape structure in the calibration transfer process can be effectively inhibited.

A pre-existing solar panel(100) is modified by adding a body comprising quantum dots(202). The quantum dots(202) are positioned on an optical path, when the modified solar panel is in use, solar electromagnetic radiation passes towards a photovoltaic region of the solar panel in which one or more photovoltaic elements generate an electrical voltage from the electromagnetic radiation. Upon the quantum dots(202) absorbing solar radiation (light) having a first wavelength, they emit light having a second wavelength which is higher than the first wavelength. The first wavelength is one for which the photovoltaic elements have a first conversion efficiency value. The second wavelength is one for which the photovoltaic elements have a higher conversion efficiency value.

The invention discloses an integrated circuit multilayer structure defect nondestructive testing method based on terahertz time-domain spectroscopy, and relates to the technical field of integrated circuit defect detection, and the method comprises the following steps: testing the terahertz time-domain spectroscopy of an integrated circuit, and converting the terahertz time-domain spectroscopy into an intensity reflection spectrum; performing feature extraction on waves in the intensity reflectance spectrum to obtain waveform features of the intensity reflectance spectrum; preparing a test sample of the integrated circuit, and acquiring waveform characteristics of the test sample to obtain normal characteristics; carrying out deep learning on the normal features, and analyzing to obtain a judgment standard of the normal features; performing nondestructive testing on the defects of the integrated circuit based on the judgment standard; the method is used for solving the problem that the defects of the integrated circuit cannot be accurately recognized due to the fact that the existing integrated circuit defect detection technology is insufficient in applicability and incomplete in defect recognition of the integrated circuit.

This invention discloses a detection system and protein analyzer based on a filtering amplification module. The processing module simultaneously provides the same pulse modulation signal to both the light source module and the filtering amplification module. The light source module provides a first wavelength spectrum under a first level signal and is turned off under a second level signal. The photoelectric conversion module converts the second wavelength spectrum into a level signal when the light source module is off. The filtering amplification module is turned off under the first level signal and turned on under the second level signal. Thus, when the light source module is working, the photoelectric conversion module receives both the first and second wavelength spectra. At this time, the filtering amplification module is not turned on. After the light source module is turned off, the second wavelength spectrum is maintained for a certain period, at which point the filtering amplification module turns on. This means that by turning off the light source module, the first wavelength spectrum is filtered out, improving the accuracy of the detection.

The application provides a distributed acoustic wave sensing system and a demodulation method thereof. The distributed acoustic wave sensing system comprises a laser, an optical modulation device, an optical fiber, an unbalanced interference device, a balanced photodetector and a signal processor. The optical modulation device is used for receiving laser light, modulating the laser light into chirp frequency pulse light and amplifying and outputting the chirp frequency pulse light. The optical fiber comprises a plurality of scattering enhancement points, which are used for receiving the amplified chirp frequency pulse light and outputting reflected light of the scattering enhancement points. The unbalanced interference device comprises two interference elements with an arm length difference, and interference spectra of the two scattering enhancement points are formed by using the time delay of the two interference elements. The balanced photodetector is used for converting the interference spectra of the two scattering enhancement points formed by the reflected light of the two scattering enhancement points into corresponding electrical signals. The signal processor is used for collecting the electrical signals and analyzing and demodulating the electrical signals to output acoustic wave information. The acoustic wave sensing with a large dynamic range is realized.

A photovoltaic generation assembly is disclosed, comprising a plurality of vertically oriented solar tubes, each aligned with a corresponding Fresnel lens mounted on a movable Fresnel lens holder. The system includes a height adjustment assembly that controls the vertical position of the Fresnel lenses to optimize light focus based on solar movement. The adjustment mechanism may include a stepper motor driving a gear-based shaft assembly, or alternatively, a solenoid-based system that magnetically elevates or lowers the lens holder. Each solar tube incorporates a down-conversion assembly to shift high-energy photons, an up-conversion assembly to convert low-energy infrared photons into usable light, and a reflective base for photon recycling. An optional thermoelectric layer recovers heat energy. The arrangement increases photon absorption via internal reflections, improving solar conversion efficiency and enabling multiband energy harvesting from a compact, modular solar architecture.

This invention discloses a rare-earth element-doped tellurate scintillation glass thin film, its preparation method, and its applications. It belongs to the field of materials science and technology, using tellurate glass as a substrate and uniformly co-doping with Eu. 3+ Ions and Yb 3+ Ions; the tellurate scintillation glass film has a thickness of approximately 80 nm to 200 nm. The tellurate scintillation glass film obtained by this invention has a uniform thickness and is defect-free, exhibiting high efficiency in Eu scintillation. 3+ →Yb 3+ Its energy down-conversion properties enable it to be used as a near-infrared luminescent or down-conversion material, and it has superior performance potential in areas such as serving as a spectral conversion layer to improve the light response of silicon-based solar cells or as a near-infrared micro scintillator.

A method for text-image integration is provided. The method may include receiving a question related to pairable data comprising text data and image data. Embeddings are generated from the text tokens and image encodings. Embeddings are generated from the text tokens and image encodings. The embeddings include text embeddings and image embeddings. A spectral conversion of the text embeddings and the image embeddings is performed to generate spectral data. The spectral data is processed to extract text-image features. The text-image features are processed to generate inferred answers to the question.

The invention discloses a flexible transparent electrode with a light conversion function and a preparation method and application thereof, and the preparation method comprises the following steps: mixing a cesium tribromoplumbate quantum dot colloidal solution, polymethyl methacrylate, dimethylformamide and toluene to obtain a light conversion solution; spin-coating the silver nanowire solution on glass, performing thermal annealing treatment, spin-coating polydimethylsiloxane, and performing curing treatment to obtain a transparent electrode; and spin-coating the transparent electrode with a light conversion solution, carrying out drying treatment, spin-coating polydimethylsiloxane, carrying out curing treatment, and stripping the glass to obtain the flexible transparent electrode with the light conversion function. The problem that an existing transparent electrode only has a single charge transmission function when applied to a photoelectric device is solved, the spectrum conversion capacity is given to a traditional transparent electrode through the composite light conversion layer, and the photoelectric conversion efficiency of the device can be effectively improved on the basis that the original structure of the device is not changed when the transparent electrode is applied to the photoelectric device such as a solar cell.

Composite comprises polymer and lanthanide complex Au+[Ln(L1)w(L2)x(L3)y(L4)z)]-u. A is a metal cation, preferably potassium. Ln is a lanthanide, preferably Europium. L1, L2, L3, L4 are dibenzoylm

Methods of manufacturing polyoxotitanates, polymer-polyoxotitanate composite materials and novel polyoxotitanates are provided. The invention enables spectral conversion of sunlight towards longer wavelengths, which is beneficial for increasing 5 available photons for photosynthesis.

A diaryloxybenzoxadiazole compound having the general formula (Ia) and disubstituted with a thiophene group, wherein: -Z represents a sulfur atom, an oxygen atom, or a selenium atom; or an NR5 group, wherein R5 is selected from straight-chain or branched C1-C groups. 20 Preferably C1-C8 alkyl, or selected from optionally substituted aryl groups; -R1, R2, and R3, which may be the same or different from each other, representing hydrogen atoms; or selected from straight-chain or branched C1-C groups optionally containing heteroatoms. 20 Preferably C1-C8 alkyl, optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted straight-chain or branched C1-C 20 Preferably, it contains C1-C8 alkoxy groups and -COOR6 groups, wherein R6 is selected from straight-chain or branched C1-C6 groups. 20 The preferred alkyl group is C1-C8, or cyano; R1 and R2 may optionally be combined to form a saturated, unsaturated, or aromatic cyclic or polycyclic system containing 3 to 14 carbon atoms, preferably 4 to 6 carbon atoms, together with the carbon atoms to which they are bonded, which optionally contains one or more heteroatoms, such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorus, selenium; R4 may be the same as or different from each other, selected from optionally substituted aryl groups. The diaryloxybenzoxadiazole compound having the general formula (Ia) and disubstituted with a thienophene group can be advantageously used as a spectral converter in a light-emitting solar concentrator (LSC), which in turn can improve the performance of a photovoltaic device (or solar device) on a rigid or flexible support, for example, a selection between photovoltaic cells (or solar cells) and photovoltaic modules (or solar modules). More specifically, the photovoltaic device (or solar device) can be advantageously used to construct a greenhouse.

This disclosure relates to a method for near-infrared spectral conversion of gasoline. Hydrocarbon compounds are used as standard samples, and their spectra are acquired on two spectrometers. A fitting algorithm is then used to obtain a fitting coefficient vector between the standard spectral matrix obtained from the first spectrometer and the spectrum of a typical gasoline sample. This fitting coefficient vector is then multiplied by the standard spectral matrices obtained from both spectrometers to obtain the gasoline fitted spectral matrix. A mathematical transformation is then performed on this resulting matrix to obtain the gasoline near-infrared spectral conversion coefficients between the first and second spectrometers. This method eliminates minor spectral differences between near-infrared spectra of gasoline samples measured by different spectrometers. In practical applications, it eliminates the need to collect gasoline standard samples, saving manpower and resources, while improving the accuracy of spectral conversion. It is suitable for rapid analysis of gasoline sample composition and properties.

According to the method, color restoration is carried out on the photoelectric signal of the extended color filter through spectrum conversion matrix transformation and fusion calculation, and the extended channel is smoothly mapped back to the standard RGB space where the basic color filter layout is supposed to exist at the position, so that color mutation is avoided and multispectral data availability is kept. A sparse layout is adopted for the extended color filter, the effective imaging area of a pixel array is maximized, the high-resolution imaging capacity is reserved, meanwhile, spectral information is collected at the limited pixel cost, and the optimal balance of the resolution and spectral sampling is achieved. In addition, imaging data / PDAF phase information and multi-spectral information are packaged in a virtual channel for transmission, a signal link structure is optimized, hardware overhead is reduced, unified processing and synchronous output of multi-modal signals are realized, and multi-task cooperation of focusing, spectral analysis, image generation and the like is supported. On the premise that hardware is concise, the light energy utilization rate is high and the resolution ratio is not affected, the color rendition precision, the system compatibility and the multifunctional expansion capacity are improved, and the system has outstanding technical advantages in the fields of spectral imaging and the like.

This invention discloses a rare-earth-doped perovskite quantum dot / fluoride core-shell heterostructure nanomaterial and its preparation method, relating to the field of nanomaterial preparation technology. This invention uses Yb 3+ Cesium lead halide perovskite serves as the quantum dot core, with a rare-earth-doped active fluoride shell epitaxially grown on its surface, forming a core-shell heterostructure. Furthermore, an undoped inert fluoride shell is epitaxially grown on the surface of the active fluoride shell, constructing a core-shell-shell multilayer heterogeneous nanomaterial. This invention achieves complementary performance advantages between perovskite and fluorides, broadens the material's spectral response range, improves chemical stability and luminescence efficiency, and combines upconversion luminescence and quantum sizing characteristics. It can be widely applied in near-infrared photodetectors, biofluorescent probes, optical anti-counterfeiting, and spectral conversion thin films.

The invention relates to a method for generating super-continuum spectrum light, comprising: providing frequency comb pump light and auxiliary pump light wherein an auxiliary center frequency is spectrally offset from a frequency comb center frequency by an auxiliary pump detuning amount; pumping a non-linear medium, the non-linear medium being associated with generating a dispersive wave at a dispersive wave frequency, the dispersive wave frequency being frequency shifted by a dispersive wave detuning amount relative to the frequency comb center frequency; performing spectral conversion on the frequency comb pump light through a cascade four-wave mixing process induced by the auxiliary pump light so as to generate cascade frequency comb light; generating a dispersive wave at the dispersive wave frequency, the generation of the dispersive wave being induced by the cascade frequency comb light, the induction being due to the integral multiple of the detuning amount of the auxiliary pump being located within the spectral range of the detuning amount of the dispersive wave; and outputting the cascaded frequency combed light and the dispersed wave, thereby providing the super-continuum spectrum light.

The utility model discloses a modular adjustable light conversion wave band energy -collecting film device relates to energy -collecting film technical field, the utility model discloses a support subassembly, adjustable rotation subassembly and energy -collecting film body, the inner chamber swing joint of support subassembly has adjustable rotation subassembly, the utility model discloses a support subassembly with adjustable rotation subassembly's magnetic formula cooperation, can quickly complete the replacement of different light conversion wave band module, and user does not need to help professional tool, through magnetic force adsorption automatic positioning installation, when disassembling, after taking down fixed block, pull fixed frame top pull rope, can easily separate adjustable rotation subassembly, and single replacement time is shortened to minute level, and different light conversion board can preset multiple spectrum conversion function, through the replacement of different adjustable rotation subassembly, can adapt the light demand or the spectral response characteristic of photovoltaic module of agricultural crops different growth stages, solve the pain point that traditional fixed structure can not dynamically adjust, significantly improve light energy utilization efficiency.

The utility model relates to a grating type LED unit module which comprises a grating net with grating holes, LED lamp beads are arranged in the grating holes, and a driving unit used for driving the LED lamp beads to work is arranged on the back face of the grating net. And the side wall of the grid hole has a radian for gathering light beams. According to the technical scheme, the grid holes are provided with arc side walls used for gathering light beams, LED lamp beads arranged in the grid holes are driven by a driving unit located on the back face of the grid net, optical elements such as polarization filters or light gathering optical elements are arranged above the grid holes, spectrum conversion is conducted on the light beams, the color changing effect is formed, and the color changing effect is achieved. And the color and rhythm of the product are increased.

At least one molecule is ionized and a mass spectrometer mass analyzes an m / z range, producing an m / z mass spectrum. A range of N sequential charge states is received. A copy of the m / z mass spectrum is created for each of the N charge states, producing N m / z spectra. Each spectrum of the N spectra is converted to a neutral mass mass spectrum using a different charge state of the N charge states, producing N neutral mass mass spectra. The N neutral mass mass spectra are aligned by neutral mass. When two or more spectra of the N neutral mass mass spectra corresponding to two or more different and sequential charge states include a neutral mass peak above a predetermined intensity threshold at a neutral mass value within a predetermined neutral mass tolerance, the neutral mass value is identified as a neutral mass of the at least one molecule.

The application discloses a nonlinear wide spectrum fiber light source, which is a technology for expanding the spectrum of a light source by using the third-order nonlinear effect in an optical fiber. High-power laser with two wavelengths is injected into a high nonlinear optical fiber as pumping light to achieve spectrum conversion and light power transfer, so that a wide spectrum light source and high output power are realized. The width and power of the spectrum of the light source are related to the pumping light power and the parameters of the nonlinear optical fiber. The light source power theoretically has no upper limit. The light source is used for a high-precision fiber interferometer, which is a brand-new technical approach.

Tungsten / molybdate fluorescent materials, used in indoor plant lighting and spectral conversion in silicon-based solar cells, belong to the technical field of fluorescent materials science. The chemical formula is A9M. 2(1‑x‑y) N4O 24 xBi, yR, A is one or more of Sr, Ca, and Ba; M is one or more of La, Gd, and Y; N is one or a combination of W and Mo; O is oxygen; R is one or a combination of Yb and Nd; 0.01≤x≤0.25; 0.00≤y≤0.11. Used for indoor plant lighting and spectral conversion in silicon-based solar cells. Can provide chlorophyll a, chlorophyll b, carotenoids, and photopigment P. R and P FR It absorbs blue light in the 400-500nm range and red light in the 600-700nm range; it also absorbs ultraviolet and visible light and converts it into near-infrared light, thus improving the utilization rate of sunlight.

The present application provides a lighting system with anti-interference illuminance compensation function and an anti-interference illuminance compensation method thereof. The lighting system comprises a sensor module, a controller and at least one light source. The sensor module detects infrared radiation intensity and ambient total illuminance. The controller is connected with the sensor module and executes a spectral ratio calculation program to calculate a spectral ratio of the infrared radiation intensity and the ambient total illuminance. The light source is connected with the controller. When the spectral ratio is substantially greater than 0, the controller executes a natural light illumination decoupling program to calculate a natural light illuminance component according to the infrared radiation intensity and a natural light spectral conversion coefficient, executes a light compensation program to calculate a light compensation value according to default target illuminance data and the natural light illuminance component, and controls the light source according to the light compensation value.

A wireless medical imaging system is provided that includes a head unit and an optical cable. The head unit includes a head unit housing, a head unit electrical connector, an image sensor, a wireless transceiver, a central processing unit, and a user input component. The optical cable includes an optical cable electrical connector, a power cable, and an integrated light source. The integrated light source includes a source of radiant radiation having a first optical spectrum, an optical element positioned to direct radiation from the source of radiant radiation, a volumetric spectral converter, an optical reflector positioned around the converter, and an output filter. The converter converts the radiation directed from the source of radiant radiation to radiation having a second optical spectrum different from the first optical spectrum. The reflector reflects the converter radiation toward the output filter. The integrated light source transmits light from the optical cable through the output filter.

Complexes that increase the wavelength of electromagnetic radiation and their use in agriculture and photovoltaic devices are provided. The invention also relates to composites and compositions comprising the complexes, methods of forming the composites and compositions, and products and devices comprising the composites and / or compositions.

The utility model relates to a red light eye protection mask which aims at providing blue light protection for eyes and improving the eye using environment. The eye protection mask is composed of four layers of structures including a base layer, a blue light filtering layer, a spectrum conversion layer and a protection layer. The base layer adopts a transparent polyester film with the thickness of 40-120 microns, the thickness of the blue light filtering layer is 20-80 microns, and a quantum dot material is used for effectively blocking harmful blue light; the thickness of the spectrum conversion layer is 10-30 [mu] m, and quantum dots with the particle size of 5-20 nm convert part of light into red light beneficial to eyes; and the outermost protective layer is an organic silicon coating or a hardened PET film, so that the internal structure is prevented from being damaged and corroded by the outside. According to the red light eye protection mask, the risk of retina injury caused by long-time exposure in front of a screen of electronic equipment is remarkably reduced, eye fatigue is reduced by converting light into long-wave red light, and the visual comfort is improved. In addition, the product does not cause color distortion or brightness reduction, and the original display effect of the screen is kept.