18results about How to "Wide spectral range" patented technology

The invention discloses a multi-spectral imaging system and method in a single-pixel type ultraviolet-visible-infrared wide spectral range. The system comprises a light source module, a modulation device, a lens group, a multi-spectral detection module, a multi-channel data acquisition module and a data processing module, according to the invention, a plurality of narrow-band detectors with different spectral responses are introduced into the multispectral detection module, so that additional light splitting devices and light filtering devices are avoided, parameters such as view fields, view angles and pixel numbers of images obtained by using different narrow-band detectors are completely the same, the problem of image registration does not exist, and data analysis and image fusion are facilitated; in addition, the size of the narrow-band detector is basically not limited and can reach the centimeter magnitude, and the imaging capability is improved under the condition of weak light. The multispectral imaging system provided by the invention has the characteristics of single-pixel imaging, large number of spectrums, wide spectral range, high imaging speed, good temporal-spatial resolution and small size.

The invention discloses a space-time light field dynamic reconstruction method based on monochromatic numerical mode decomposition, and belongs to the field of space-time mode-locked pulse fiber lasers and multimode nonlinear fiber optics, and the method comprises the following steps: S1, building an analysis platform which comprises a space-time mode-locked laser, a folded mirror, a spectral filter, a processing device and an acquisition device, the processing device adjusts the state of the spectral filter, and the acquisition device points to the folding mirror; s2, calibrating the analysis platform; s3, the space-time mode-locked laser generates an incident beam, after spectral filtering, the acquisition device continuously acquires spatial light intensity corresponding to each spectral component, and spectrum-spatial intensity information is obtained; and S4, converting the spectrum-space intensity information into space-time structure information. By adopting the method, the output mode of the space-time mode-locked pulse is monitored in real time, the mode selective excitation in the space-time mode-locked laser cavity is fed back and controlled, and a solution is provided for a high-performance space-time mode-locked fiber laser with a controllable output mode.

The invention discloses an object space telecentric lens with a long working distance and a large numerical aperture. The object space telecentric lens comprises a front lens group, an aperture diaphragm and a rear lens group which are sequentially arranged from an object space to an image space along an optical axis of the lens. The front lens group comprises a first lens with positive focal power, a second lens with positive focal power, a fourth lens with positive focal power, a sixth lens with positive focal power, an eighth lens with negative focal power, a third lens with negative focal power, a fifth lens with negative focal power, a seventh lens with negative focal power and a ninth lens with negative focal power, the eighth lens and the ninth lens form a second group of doublet lenses, and the fifth lens, the sixth lens and the seventh lens form a first group of triplet lenses. The rear lens group includes a tenth lens and a twelfth lens having positive refractive power, and an eleventh lens and a thirteenth lens having negative refractive power. According to the invention, the thirteen spherical glass lenses are adopted, and the focal power of each lens is reasonably distributed, so that the lens has the advantages of long working distance, large numerical aperture, ultrahigh resolution, high relative illumination, wide spectral range, high telecentricity and the like, and the problem of low resolution of a long-working-distance object space telecentric lens is solved. The measurement precision of the detection lens is improved, and the requirements of some application scenes for higher-performance lenses are met.

The application belongs to the field of organic photovoltaics, and relates to a kind of polymer photovoltaic material and its preparation method and application. Double bromide compound A and double side tin compound B are subjected to Stille cross coupling reaction under the action of palladium catalyst, and the polymer photovoltaic material is obtained. The polymer photovoltaic material prepared by the application has an ultra-wide absorption spectrum range from 300 nm to 1200 nm. Such material exhibits an ultra-wide spectral range and a high extinction coefficient, and embodies excellent light absorption capacity. The strong light absorption capacity of the polymer photovoltaic material prepared by the application will help to improve the device efficiency of organic photovoltaics and improve the energy conversion efficiency of the device. The polymer photovoltaic material prepared by the application provides reference value for the design of functional materials in many fields of organic photoelectricity and solar energy utilization and conversion.

The present application provides a pixel structure, an infrared image sensor and an electronic device. In the pixel structure, a first via hole opposite to the first well region is provided in the first insulating layer, graphene fills the first via hole and forms a heterojunction with the first well region, and the deep well region is connected to the lower end of the first well region and the lower end of the second well region; the first electrode is in electrical contact with the graphene, and the upper end of the second well region forms an ohmic contact with the second electrode; the first well region, the second well region and the deep well region have the same conductivity type, the second well region surrounds the first well region and an isolation groove is provided between the two. The pixel structure of the present application can respond to a very wide infrared spectrum range.

The present application provides a high-strength anti-halo photoelectric glass and a preparation method and application thereof. The composition of the high-strength anti-halo photoelectric glass, by mass percentage, comprises 68-75% SiO2, 0.5-1% Bi2O3, 0-5% Li2O, 8-15% Na2O, 0-6% B2O3, 10-15% Al2O3, 0.1-3% CaO, 0-1% CeO2 and 0.1-1% As2O3. The high-strength anti-halo photoelectric glass has a wide spectral range, excellent spectral transmittance, high baking temperature resistance, strong bending strength and impact resistance, and can be used to prepare optical input windows of optical systems and photoelectric detection systems. It has broad application prospects in photoelectric detection and precision optics fields such as low-light night vision, ultraviolet detection, space measurement and control, information display, industrial cameras, and high-end lenses.

The invention relates to the technical field of film materials, in particular to an ultraviolet-proof barrier coating film and a manufacturing method thereof.The ultraviolet-proof barrier coating film comprises a polyethylene glycol terephthalate base material layer, an anchoring layer and an ultraviolet barrier layer, the anchoring layer and the ultraviolet barrier layer are sequentially stacked on the surface of one side of the base material layer, and the anchoring layer is a coating formed by curing a main film forming substrate; the ultraviolet blocking layer is a composite coating containing polyurethane acrylate resin, a photoinitiator, an ultraviolet light absorber, nano zinc oxide and nano montmorillonite. According to the invention, through optimized chemical composition and process parameters, firm interface bonding between layers and a compact network structure are realized, so that a high initial ultraviolet protection coefficient and ultraviolet aging resistance durability are synergistically obtained.

The embodiment of the utility model provides a light source module and a lighting device, the light source module comprises a red LED light source, a green LED light source, a blue LED light source and a cyan LED light source, the red LED light source is used for emitting red light with the dominant wavelength ranging from 610 nm to 650 nm; the green LED light source is used for emitting green light with the dominant wavelength ranging from 510 nm to 540 nm. The blue LED light source is used for emitting blue light with the dominant wavelength ranging from 440 nm to 470 nm. The blue-green LED light source is used for emitting blue-green light with the peak wavelength ranging from 490 nm to 532 nm, and the radiation intensity of the blue-green light at 480 nm and the radiation intensity of the blue-green light at 550 nm are both larger than or equal to 0.5 times of the radiation intensity of the peak wavelength of the blue-green light. Thus, the cyan LED light source not only helps to improve the utilization efficiency of light energy of the light source module, but also helps to expand the spectral range of the light source module and improve the color rendering index, thereby enhancing the authenticity and accuracy of color rendition, and helping to meet the requirement of professional fields for high color fidelity.

The invention discloses an adjustable on-chip integrated polarizer based on a ridge-shaped optical waveguide. The adjustable on-chip integrated polarizer comprises a substrate (7), a TE type on-chip integrated polarizer arranged on the substrate (7), and an adjustable layer (4) covering the polarizer, the TE type on-chip integrated polarizer is composed of a ridge-shaped optical waveguide (3), and incident light is input through an input end Input port (5), transmitted along the ridge-shaped optical waveguide (3) in a TE0 polarization mode and a TM0 polarization mode and output through an output end Output port (6). The substrate (7) comprises a crystal single crystal thin film layer (1) and a substrate material layer (2); the TE type on-chip integrated polarizer is prepared on the crystal single crystal thin film layer (1). Compared with the prior art, the on-chip integrated polarizer has the advantages of wide spectral range, ultrahigh extinction ratio and adjustability.

The invention discloses a broadband spectrum integrated spectrometer based on coupling of a waveguide grating and a scattering array, one side of an optical waveguide is etched with the waveguide grating, and the outer side of the waveguide grating is provided with the scattering array. The CMOS detector is used for detecting the spatial distribution of the scattering light intensity of the scattering array and reconstructing an incident spectrum by using the light intensity distribution. Wherein the waveguide grating adopts a waveguide grating with a gradual change period, and the Bloch mode of incident light with different wavelengths is localized at different spatial positions of the waveguide grating. The scattering array comprises scattering units, the scattering units are distributed in an array mode, each scattering unit is composed of nanorods arranged in a 2 * 2 matrix mode, and the radiuses of the nanorods of the scattering array gradually change in the extending direction of the optical waveguide. According to the invention, the Bloch mode local area of the waveguide grating and the scattering array resonance of the nanorod array are combined, the problem that the resolution precision of a traditional spectrometer is limited by the volume is solved, and the integrated spectrometer with high resolution capability and wide spectral range is realized.

The invention relates to the technical field of organic chemistry, in particular to a novel high-sulfur-content photopolymerizable high-refraction monomer and a preparation method thereof.The series of high-refraction structures are not reported in literatures at present, dithiocyclopentane serves as a connecting unit and is combined with a series of structural units with the high molar refractive index and photocurable groups, and the novel high-sulfur-content photopolymerizable high-refraction monomer is obtained. The refractive index of the material is improved, the monomer is ensured to be in a liquid state, and the monomer is easy to dissolve, full-solid and pollution-free in the polymerization process; the structure contains rigid large conjugated aromatic rings and high-sulfur content dithiocyclopentane methyl mercaptan, so that the dispersion of the material is reduced, and meanwhile, certain physical properties are endowed.

The invention discloses a dark green light-red light composite ultra-wideband luminescent material, a preparation method thereof and an LED light source containing the luminescent material. The chemical formula of the luminescent material is (A8-xEux) (Mg1-yMny) B (PO4) 7, wherein A is one or a combination of Sr and Ba alkaline earth metals; b is one or a combination of La, Y, Sc, Gd, Ga, In and Al trivalent metal ions; eu < 2 + > and Mn < 2 + > are luminescent central ions, and the specific doping amount is 0 lt; x is less than or equal to 20%, 0 lt; y < = 20%. The powder material is prepared by adopting a high-temperature solid-phase method, and the method is simple in process, environment-friendly and low in cost. The luminescent material provided by the invention can realize ultra-wideband coverage of green light-red light in a single matrix, can effectively supplement green light gullies in a full spectrum and reduce the use of other commercial powder, can be used as a fluorescence conversion material, and has a huge application prospect in the fields of full-spectrum illumination and high-power laser illumination.

The application discloses an infrared in-situ transmission sample assembly and an infrared transmission detection system. The infrared in-situ transmission sample assembly comprises a temperature-controllable heating tube, a metal tube sleeve and a sample support. The temperature-controllable heating tube comprises a tube main body. The metal tube sleeve comprises a main tube sleeve which is inserted into the tube main body and is electrically connected with a temperature controller. The sample support comprises a support main body which is inserted into the main tube sleeve and has a tubular structure with open ends. A groove is formed in one end of the support main body along the side surface, and the groove is used for inserting a sample to be measured so that the sample to be measured is in the pipeline of the support main body. The sample assembly can directly place the sample without loading or clamping other window materials, can avoid the breakage of the sample, is beneficial to the evaporation of a small amount of water vapor in the heating process, and thus can avoid the interference of water vapor in the measurement process. The application provides a more accurate and reliable sample accessory for the measurement and analysis of the infrared transmission spectrum.

The embodiment of the present application discloses a kind of single-mode tapered waveguide spectrum detection device and its detection method;The embodiment of the present application includes input waveguide, it is configured to support single-mode propagation in target working wavelength range, for receiving light to be measured and make it transmit in single-mode form;Tapered waveguide, its input end is coupled with the output end of input waveguide, tapered waveguide has gradually changing cross-sectional dimension along the direction of light propagation, and different wavelengths of light produce distinguishable leakage light in different axial positions when propagating in it;Detector array is distributed along at least one side of tapered waveguide, for detecting the leakage light intensity of tapered waveguide at different axial positions;Wherein, device is configured to output the spectral information of light to be measured based on the mapping relationship between preset wavelength and axial position according to leakage light intensity.It can realize high spectral resolution and high spectral contrast while maintaining wide spectral range by the embodiment of the present application.

The application discloses a sunlight collection phototherapy system and relates to the field of spectrum therapeutic apparatuses. The sunlight collection phototherapy system comprises a base, a protective cover fixedly connected to the top of the base, a first supporting plate and a second supporting plate fixedly connected to the inner wall of the protective cover, convex lenses connected to the second supporting plate, a plurality of quartz receivers embedded in the inner wall of the first supporting plate, and a plurality of the convex lenses corresponding to the quartz receivers one by one. A sickbed is fixedly connected with sliding rails on both sides, two annular seats are slidingly connected between the two sliding rails, and three light release assemblies are assembled on the inner walls of the two annular seats. The sunlight collection phototherapy system can greatly reduce energy consumption by allowing external light to pass through the protective cover, be concentrated by the plurality of convex lenses, and then be received by the plurality of corresponding quartz receivers. Then, the quartz receivers transmit the received light to the light release assemblies through quartz optical fibers for release.

The utility model discloses a computing ghost imaging device based on a mobile phone, which comprises a mobile phone body, a mobile phone camera is arranged on the back of the mobile phone body, a mobile phone flash lamp is arranged in the mobile phone body and below the mobile phone camera, a mask plate is arranged on the outer side of the mobile phone flash lamp, and the mobile phone camera is arranged in the mobile phone camera. And an object is arranged at one end, far away from the mobile phone body, of the mask. According to the utility model, the mask plate is selected to replace a DMD (Digital Micromirror Device) to project speckles, and the mobile phone camera is used to replace a barrel detector to collect light intensity information reflected by an object, so that the spectral range of mobile phone photographing can be expanded, the anti-interference capability of mobile phone photographing can be improved, the cost of ghost imaging can be reduced, and the practical process of ghost imaging can be promoted.

The present invention belongs to the technical field of generalized ellipsometers, and specifically relates to a generalized ellipsometer with a wide spectrum double variable incident angle system, including a high-band measurement system, a sample and a low-band measurement system, wherein the low-band measurement system includes a polarizing arm 1 and an analyzing arm 1, wherein the sample is arranged in the optical path direction of the polarizing arm 1, and the analyzing arm 1 is arranged in the transmission optical path direction of the sample, and the high-band measurement system includes a polarizing arm 2 and an analyzing arm 2, wherein the sample is arranged in the optical path direction of the polarizing arm 2, and the analyzing arm 2 is arranged in the reflection optical path direction of the sample. The present invention uses two systems to complete the measurement of the entire wide spectrum range at a single time, and only needs to reasonably decompose the entire wide spectrum band so that each decomposed spectrum band can be measured in a separate system. The spectrum range that can be measured at a single time by the generalized ellipsometer designed by the structure of the present invention can be wider than the spectrum range that can be measured at a single time by the existing generalized ellipsometer.

The application provides a kind of three-dimensional lake blue-green algae biomass spectrum detection system, comprising: host computer and probe;Host computer and probe are connected by optical fiber;Light source emits light beam to light source reflection coating, produces diffuse reflection light beam to detection warehouse;Water tower head is arranged on the other side of detection warehouse, for the water body from detection warehouse is extracted after detection is completed;Collimating lens group is arranged on the top surface of detection warehouse, for imaging to the water body to be measured;Collimating lens group is connected with optical fiber through connecting device, and then connected with optical fiber switching structure and optical fiber spectrometer through optical fiber respectively.Diffuse reflection light beam enters the inside of detection warehouse through light inlet hole and irradiates the water body to be measured, and then the image is transmitted to optical fiber spectrometer through optical fiber after collimating lens group imaging, to obtain the spectral data of the water body to be measured.The application has the advantages of practical, portable, low cost and low power consumption.