362 results about "Infrared transmission" patented technology

The invention discloses a solar silicon wafer visual detection method, and particularly relates to the technical field of silicon wafer detection. The method comprises the following steps: acquiring optical images of different incident angles, synchronously acquiring infrared transmission images, performing normalization processing, edge enhancement filtering and self-adaptive threshold segmentation on the acquired multi-angle images, extracting suspected crack areas, and respectively calculating a gray gradient change rate and a stress abnormal degree, so as to obtain a suspected crack area; calculating a crack credibility score according to the gray gradient change rate and the stress abnormal degree through a weighted scoring method, and comparing the crack credibility score with a preset crack detection threshold value to distinguish real hidden cracks and stress pseudo defects; if the credibility score is lower than the threshold value, secondary sampling is carried out by adjusting the illumination angle, and the judgment result is further optimized; according to the method, the false rejection rate caused by lattice stress pseudo defect misjudgment is effectively reduced, meanwhile, missing detection of real subfissures is avoided, and the accuracy, stability and production yield of silicon wafer defect detection are improved, so that the long-term reliability of a photovoltaic module is enhanced.

The present disclosure discloses a non-destructive detection method and system for Conopomorpha sinensis Bradley, which includes: placing a lychee sample to be detected on a conveyor belt; acquiring sample information of the lychee sample based on visible / near-infrared light and X-ray imaging technology; wherein the visible / near-infrared light acquires internal quality features of the lychee sample; the X-ray imaging technology acquires internal density variation features of the lychee sample; analyzing the sample information according to a preset data processing and analysis method based on PLSR and a support vector machine to obtain a classification result of the lychee sample. The present disclosure uses the visible / near-infrared transmission spectrum and the X-ray imaging feature fusion in combination with PLSR to improve the detection accuracy of the lychee sample of the testing set to 92.92%, and in combination with the support vector regression to obtain a classification accuracy of 94.44% of the testing set.

Devices, apparatuses, and methods are disclosed that include a glass or glass ceramic substrate with a bleached region and an unbleached region. Examples include a substrate with a region that transmits IR wavelength light, and a region that is substantially opaque to IR light. Examples include additional opacity in some or all regions to visible wavelength light and / or UV wavelength light.

The invention provides a holmium and ytterbium co-doped mid-infrared microsphere Raman laser and a preparation method thereof, and relates to the technical field of laser preparation, the holmium and ytterbium co-doped mid-infrared microsphere Raman laser comprises an infrared transmission optical fiber, a pump light source, holmium and ytterbium co-doped tellurate glass microspheres and passive tellurate glass microspheres, pump light emitted by the pump light source is guided to a conical region through the infrared transmission optical fiber, and the holmium and ytterbium co-doped tellurate glass microspheres and the passive tellurate glass microspheres are arranged in the conical region; sequentially carrying out optical coupling with holmium and ytterbium co-doped tellurate glass microspheres and passive tellurate glass microspheres; in the holmium and ytterbium co-doped tellurate glass microspheres, the doping amount of the holmium element is 0.3%, and the doping amount of the ytterbium element is 0.45% according to the mass percentage. Compared with the prior art, through the cascade structure of the holmium-ytterbium co-doped microspheres and the passive microspheres, three-step wavelength conversion of pump light-rare earth ion lasing-Raman frequency shift is realized in a single system for the first time, and the wavelength limitation that a traditional single microsphere depends on a rare earth ion fixed energy level is broken through.

The invention relates to the technical field of image processing and geotechnical engineering monitoring, in particular to a roadway surrounding rock image crack identification method which comprises the following steps: S1, synchronously acquiring a visible light image and a near-infrared image of roadway surrounding rock; s2, calculating the multi-direction gradient distribution dispersion of each pixel point based on the visible light image, and generating a curvature gradient entropy graph; s3, according to local extreme value distribution of the curvature gradient entropy graph, constructing a dust mask graph; s4, based on the negative correlation between the curvature gradient entropy and the near-infrared penetration depth, calculating the fissure confidence per pixel; s5, performing adaptive threshold segmentation on the fissure confidence to generate a primary fissure binary image; and S6, performing morphological skeleton extraction and breakpoint connection on the primary fracture binary image, and outputting a roadway surrounding rock fracture recognition image. According to the method, continuous, accurate and high-confidence identification of the surrounding rock fracture of the roadway in a high-dust interference environment is realized by fusing the structure entropy features and the near-infrared transmission information.

The invention discloses a heterogeneous three-core anti-resonance optical fiber for transmission from visible light to intermediate infrared light, and belongs to the technical field of optical fiber communication. The heterogeneous three-core anti-resonance optical fiber comprises an outer cladding layer from outside to inside along the diameter of the optical fiber, a first inner cladding layer, a second inner cladding layer and a third inner cladding layer are arranged in the outer cladding layer, and a plurality of nesting pipe assemblies with the same structure are arranged in the first inner cladding layer, the second inner cladding layer and the third inner cladding layer at equal intervals in the circumferential direction. An upper air fiber core area, a lower left hollow fiber core area and a lower right air fiber core area are defined by the nesting pipe assembly. The upper air fiber core area, the lower left air fiber core area and the lower right air fiber core area respectively work in a 4m wave band, a 2m wave band and a 1m wave band, have extremely low limiting loss in the three working wave bands, and have good bending resistance performance at the same time.

A visibly transparent sheet (200) and a coating for a transparent substrate (201), the coating comprising: - a first film comprising: a first stacked layer mirror film configured to reflect light in an infrared range of light and to transmit light in a visible range of light, or a first transparent conductive oxide film, - a set of structures (112) arranged in a pattern on the first film, separated by recesses (111) comprising one or more empty first unit cells (111a), each structure comprising one or more second unit cells (112a), the first and second unit cells having identical shapes and sizes, - wherein each second unit cell comprises a second layer structure comprising: a second stacked layer structure comprising at least a third dielectric layer, a fourth dielectric layer, and a second metal layer arranged between the third and fourth dielectric layers, or a second transparent conductive oxide layer. An active coating incorporating switchable materials is also proposed, enabling dynamic control over various properties. This coating facilitates the modulation of infrared transmission, reflection, or absorption of solar light in response to changing ambient conditions.

The invention relates to the technical field of optical lens detection, in particular to an infrared transmission eccentric meter which comprises a light source emitter, a lens fixing assembly and a light path output detector. The light source emitter comprises a light source, a convex lens and an image modulator which are sequentially arranged in the light incidence direction. The light source is located at an incident focus of the convex lens, light emitted by the light source is emitted to the image modulator in a parallel light beam form through the convex lens, and the image modulator can modulate and output a detection image in a light path. The convex lens is arranged on the light path of the emergent light source, so that the light source is arranged into the parallel light beams meeting the detection standard, and the situation that the detection precision is reduced due to the deviation between the incident light and the optical axis of the lens is avoided. The central optical axis of the lens can be driven to coincide with the rotating center of the lens fixing seat under the pushing of the plurality of arc-shaped lens fixing plates, so that deviation between the optical axis of the lens and the rotating shaft caused by assembly errors of the lens is avoided.

The invention discloses a laser radar ranging and imaging system and method. The system comprises a dual-wavelength laser emission module, a common-path optical transceiver module and a light-splitting-free detection module. The common-optical-path optical transceiver module is used for combining the purple laser pulse and the near-infrared laser pulse into a coaxial laser beam, guiding the coaxial laser beam to a target, receiving an echo optical signal which is returned from the target and comprises the purple laser pulse and the near-infrared laser pulse, and integrally exporting the echo optical signal; the light-splitting-free detection module comprises a gallium nitride photoelectric detector, a silicon photomultiplier detector and a signal processor. The underwater echo and the water surface echo are directly separated from each other on the physical level by using the dual-function characteristics of purple light absorption and infrared transmission of the gallium nitride detector. According to the design, sounding errors caused by signal aliasing of a traditional single-wavelength system are fundamentally eliminated, and the measurement precision is remarkably improved.

The invention discloses an ultra-wideband heterogeneous five-core anti-resonance optical fiber for transmission from ultraviolet to intermediate infrared, and belongs to the technical field of optical fiber communication. The heterogeneous five-core anti-resonance optical fiber sequentially comprises a perfect matching layer, an outer cladding layer, a first light guide unit, a second light guide unit, a third light guide unit, a fourth light guide unit and a fifth light guide unit from outside to inside along the fiber diameter, wherein the first light guide unit, the second light guide unit, the third light guide unit, the fourth light guide unit and the fifth light guide unit are arranged in the outer cladding layer. A plurality of nesting tube assemblies and gap tube assemblies with the same or different structures are arranged in each light guide unit in the circumferential direction at equal intervals, and a central air fiber core area, a left upper air fiber core area, a right lower air fiber core area, a right upper air fiber core area and a left lower air fiber core area are defined by the assemblies and work at the wave bands of 0.15-2.0 m, 2.0-3.0 m, 3.0-4.0 m, 4.0-6.0 m and 6.0-7.0 m correspondingly. And all the components show extremely low restrictive loss, dispersion close to zero and a relatively low nonlinear coefficient.

A main purpose of the present disclosure is to provide an adhesive composition which contains a (meth)acrylate having a fluorine-containing organic group and which nevertheless can give cured objects having sufficient adhesion strength and a high infrared-light transmittance.　The adhesive composition comprises a (meth) acrylate compound, an epoxy compound, a crosslinking agent, and a photoacid generator. The (meth) acrylate compound includes a (meth) acrylate having a fluorine-containing organic group. The crosslinking agent includes a (meth)acrylic resin comprising a first structural unit, which is derived from a (meth)acrylate having a fluorine-containing organic group, and a second structural unit, which is derived from a (meth)acrylate having a cyclic ether group.

Provided in the present application are a black high-reflectivity reflective strip and the use thereof. The black high-reflectivity reflective strip comprises a black functional layer and a high-reflectivity layer from top to bottom, wherein a preparation raw material of the black functional layer comprise a black infrared transmission pigment; and a preparation raw material of the high-reflectivity layer comprises a high-reflectivity filler. In the present application, a black functional layer can transmit infrared light of 750-1200 nm; the transmitted infrared light can be fully reflected by a high-reflectivity layer; when the reflective strip is used in a gap between cells of a photovoltaic module, the cells absorb the infrared light, such that the utilization rate of light can be increased, and the output power of the cells can be improved; and the reflective strip has a black appearance, has an appearance consistent with that of the cells, and is thus applicable to fields having a high requirement for the appearance consistency.

The invention discloses a space-based infrared coding spectral imaging optical system and an imaging method thereof, and belongs to the technical field of optics, the space-based infrared coding spectral imaging optical system is composed of a long-wave infrared channel and a medium-wave infrared channel, the two channels share a three-mirror system for primary image imaging, a light splitter is adopted for light splitting, medium-wave infrared light is reflected, long-wave infrared light is transmitted, and collimation is performed after light splitting. Dispersion and aliasing of spectrums are carried out in a biprism mode, each sub-channel is composed of a front prism, a main optical lens, a relay lens 1, a coding plate (a primary imaging surface), a relay lens 2, a rear prism and the like, data acquisition is carried out after dispersion aliasing is carried out, and resolving imaging is carried out by adopting a spectrum coding algorithm.

The invention provides a light conversion black appearance shielding film, a preparation method thereof and a photovoltaic module. The shielding film comprises a base material layer; the black infrared transmitting layer is positioned on the surface of the base material layer and is used for enabling the shielding film to have a black appearance, and infrared light passes through the black infrared transmitting layer; the visible light conversion layer is located on the surface, away from the base material layer, of the black infrared transmitting layer or located on the surface, away from the black infrared transmitting layer, of the base material layer and used for converting ultraviolet-visible light into infrared light. According to the invention, the problem of color difference between the periphery / spacing / bus bar / solder strip of the photovoltaic module and the cell panel is solved, and on one hand, the shielding film has relatively excellent temperature resistance and insulating property by utilizing the infrared transmission capability of the shielding film; on the other hand, ultraviolet-visible light is converted into infrared light through the shielding film, the infrared light is reflected through the back plate, sunlight in gaps of the photovoltaic module can be reflected to the solar cell again and is absorbed and utilized by the silicon wafer for power generation, and the light source utilization rate is further increased.

The invention provides stand column glass and a vehicle, and relates to the technical field of automobile glass products, and the stand column glass comprises a glass substrate which is provided with a signal transmission area for optical signal transmission; the functional patch is arranged in a first area on the glass substrate, and the first area at least completely covers the signal transmission area; the functional patch is sequentially provided with an infrared high-transmittance ink layer, a substrate and an infrared antireflection film in a stacked mode, the infrared high-transmittance ink layer is arranged on the surface, facing the glass substrate, of the substrate, and the infrared antireflection film is arranged on the surface, deviating from the glass substrate, of the substrate. According to the application, the infrared high-transmittance ink layer is printed on the functional patch, so that the functional patch obtains an effect of stopping infrared transmission by visible light, the use amount of the infrared high-transmittance ink can be greatly reduced, and the cost is reduced; moreover, the infrared antireflection film does not generate high reflection of visible light, and does not affect the normal work of an adjacent RGB camera.

The invention provides an STM32-based anaerobic fermentation biogas slurry near infrared transmission spectrum data on-line acquisition device. The device comprises a backwashing anti-blocking biogas slurry filtering system and an on-line liquid near infrared spectrum acquisition system, according to the system, a three-stage filtering mechanism is adopted, an STM32 microcontroller is taken as a core, a miniature optical fiber spectrometer and a halogen tungsten lamp light source are integrated to construct a compact transmission light path, and solid particles in biogas slurry are effectively removed by combining a backwashing anti-blocking T-shaped three-way filter, a double-buffer-bottle liquid level control mechanism and a PID liquid level control strategy; the cavitation phenomenon of a biogas slurry sampling pipeline is inhibited, the stability of sample conveying and the repeatability of spectrum collection are remarkably improved, and an efficient and portable online detection solution is provided for anaerobic fermentation process control; reliable hardware support is provided for application of a near infrared spectrum detection technology in a complex anaerobic fermentation environment.

This invention relates to a signal transmission control method for a mobile phone back clip with infrared transmission function, belonging to the field of data transmission technology. The method analyzes the infrared signal sequences received by each receiving node of the infrared receiving array on the mobile phone back clip during a preset time period. Based on the signal fluctuation degree and rarity of each sampling point in each sequence, the suspected anomaly degree of each sampling point is determined. Then, based on the suspected anomaly degree, suspected anomalous sampling points are screened from all sampling points of all infrared signal sequences. Subsequently, by analyzing the spatial and temporal distribution characteristics of each suspected anomalous sampling point during the preset time period, the method distinguishes between normal signal changes and interference-induced changes during the preset time period and quantifies the interference degree. The quantified interference degree guides the subsequent signal transmission intensity of the transmitting end, ensuring the stability of infrared signal transmission while avoiding power waste at the transmitting end, thus improving the signal transmission and reception performance of the mobile phone back clip with infrared transmission function.

Aspects of the present disclosure provide an inspection system, which can include an image module and processing circuitry. The imaging module can image a wafer with a first light beam and a second light beam. The first light beam can be coaxially aligned with the second light beam, and image a first pattern located on a front side of a wafer to form a first image. The second light beam can image a second pattern located below the first pattern to form a second image via quantum tunneling imaging or infrared transmission imaging. The second light beam can have power sufficient to pass through at least a portion of a thickness of the wafer and reach the second pattern. The processing circuitry can perform image analysis on the first image and the second image to calculate an overlay value of the first and second patterns and / or defects of the wafer.

The present application provides an aerosol producing article and an aerosol generating system comprising the aerosol producing article. The aerosol producing article comprises: an aerosol-forming matrix and an external wrapping part; the external wrapping part comprises a first portion, and at least a part of the extension length of the first portion along the axial direction of the aerosol producing article coincides with the extension length of the aerosol-forming matrix; the outer surface of the first portion is provided with a plurality of holes penetrating through the external wrapping part. The above aerosol producing article has optimized infrared transmittance, and can promote the utilization efficiency of infrared rays when infrared heating is used.

The application discloses an aerosol generating device, and relates to the technical field of tobacco production equipment, which comprises a shell, a scanning temperature measurement assembly and a control circuit board, the top end of the shell is provided with a containing cavity, the scanning temperature measurement assembly comprises an infrared transmission window, a control circuit board, a scanning execution mechanism and a motion execution mechanism, the shell further has a main cavity, a partition plate is arranged between the containing cavity and the main cavity, the scanning execution mechanism and the motion execution mechanism are arranged in the main cavity, the infrared transmission window is arranged on the partition plate, and the control circuit board is arranged in the main cavity and electrically connected with the scanning temperature measurement assembly. The aerosol generating device can perform non-fixed point temperature detection on an aerosol generating base body when heating an aerosol product, accurately locks a hot spot, and prevents local overheating.

Liquid crystal display device comprising an infrared transmission area, a light-shielding area, a backlight module, an infrared sensor, an infrared transmission layer and a first light-shielding layer, wherein the infrared sensor and the infrared transmission layer are located in the infrared transmission area, wherein the infrared transmission layer comprises a first color-resistance layer and a second color-resistance layer which are stacked and color-different, and wherein the first light-shielding layer is located in the light-shielding area and comprises a first light-shielding color-resistance layer and a second light-shielding color-resistance layer, wherein the first light-shielding color-resistance layer and the second light-shielding color-resistance layer are stacked and color-different.

The application discloses a tunnel lighting device and a realization method of direct-current photovoltaic power supply, comprising a plurality of tunnel lighting systems, each of which works independently, and each of which is assigned with a unique address number according to different areas of the tunnel; each of the tunnel lighting systems comprises an MCU unit and a power unit, the power unit comprises a photovoltaic power generation panel, the photovoltaic power generation panel is connected with a voltage transformation and stabilization module, and the power supply supplies power to each unit after the voltage transformation and stabilization module; the MCU unit is connected with a sound wave detection unit, an infrared communication unit, an LED constant current dimming unit, a storage medium and an illumination sensing unit, the LED constant current dimming unit is connected with an LED lamp, and an illumination curve is stored in the storage medium. The application has the following advantages: a low-cost cluster infrared communication mode is adopted, the shortcomings of short infrared transmission distance and strong transmission directivity are overcome, a problematic node is automatically isolated, and a communication interruption problem does not occur.

This document describes electromagnetic radiation (EMR) transmissive polymer substrates and techniques for producing EMR transmissive polymer substrates by pre-treating polymer substrates with at least one lipid. In aspects, the EMR transmissive polymer substrates are infrared (IR) transmissive polymer substrates and the techniques described are for producing IR transmissive polymer substrates. In general, disclosed techniques include applying a coating of at least one lipid to at least one surface of a polymer substrate and then performing a heat-treatment process on the coated polymer substrate. The techniques may also include performing a cooling process on the polymer substrate after the heat-treatment process.

An electronic device including a memory storing instructions; and a processor that executes the instructions to perform a process including: identifying a registered device through a scan, after identifying the registered device, connecting with the registered device based on identification information of the registered device and a preset password, to establish a communication connection with the registered device, requesting, through the established communication connection, infrared codeset information from the registered device, and after receiving the requested infrared codeset information from the registered device, transmitting, to the registered device through the established communication connection, a request for authentication of the registered device, and transmitting, to the registered device over infrared light, an authentication signal including the infrared codeset information, for authenticating the registered device.

This product is a semiconductor inspection machine for inspecting wafers on which semiconductor devices are formed for the presence or absence of defects. This product comprises a metal ring and a camera positioned in the center of the ring. When in use, the wafer is placed in the circular recess. The metal ring allows for stable placement of the wafer without bending it. Furthermore, the wafer can be securely fixed by vacuum suction through the large hole. The camera detects the emission of light in the infrared region that passes through the wafer, thereby inspecting for the presence or absence of defects in the semiconductor device. The camera is made of a material that transmits light in the infrared region and is not transparent or semi-transparent to visible light. As shown in the "Reference Diagram Showing the Usage State," the wafer position can be adjusted by sliding the support part. Furthermore, when moving the wafer, the wafer can be levitated by blowing air from the small hole, making it easy to move.

The invention provides a real-time nondestructive testing method for sugar and acidity of grapefruit based on near-infrared transmission, relates to the technical field of detection of internal quality of fruits, and solves the problem that the detection accuracy is influenced by fluctuation of grapefruit thickness when sugar and acidity detection is carried out on grapefruit fruits in a near-infrared transmission mode. According to the technical scheme, the method comprises the following steps: constructing sample sets corresponding to different fruit maximum transverse diameter subintervals; determining a preferable characteristic wavelength group; determining the maximum transverse diameter reference size of the fruit; determining an absorbance correction coefficient optimization value for sugar degree optimization prediction or acidity optimization prediction; and giving the sugar degree and acidity of the grapefruit commercial fruit through the grapefruit fruit sugar degree or acidity optimization prediction model. The method has the beneficial effects that different fruit maximum transverse diameter subintervals are used for dividing the thickness of the shaddock peel, and the transmitted spectrum is corrected by combining the absorbance correction coefficient optimization value on the basis of the fruit maximum transverse diameter reference size, so that the sugar and acidity detection precision during the separation of the thick-peel shaddock is improved.

This invention relates to a method for locating characteristic defects in cadmium zinc telluride (CZT) samples and a method for preparing CZT samples. The location method includes the following steps: determining the positions of internal feature points on the sample under an infrared transmission microscope; establishing marking features on the sample surface using FIB-SEM; and determining the relative position of the internal feature points projected onto the sample surface by establishing a geometric relationship between the virtual position of the internal feature points projected onto the sample surface and the marking features. The preparation method uses these relative positions to prepare CZT samples. The location method of this invention can simply and effectively establish the positional relationship between internal feature points and surface features, accurately locating internal defect features in CZT samples. This allows for convenient and rapid determination of the specific location for preparing transmission electron microscopy (TEM) samples, thus improving the quality of TEM samples.

The invention relates to the technical field of optical measurement, in particular to a system and a method for measuring infrared transmissivity of a material under gas radiation interference, and the system comprises a gas heat source system, a transmissivity testing system and a data acquisition and processing system, the gas heat source system provides high-temperature radiation gas for a test cavity of the transmissivity test system; the black body and the spectrograph directly face two to-be-tested materials which are oppositely arranged on the test cavity; and the data acquisition and processing system acquires state parameters of the high-temperature radiation gas, the temperature of the to-be-measured material and optical signals of the spectrograph. According to the invention, the high-temperature radiation gas with controllable state parameters is provided for the test cavity through the gas heat source system, and different gas radiation interference environments are simulated; a spectrograph is used for measuring optical signals, and a data acquisition and processing system is used for acquiring state parameters of high-temperature radiation gas and the temperature of a to-be-measured material, so that data is provided for real infrared transmissivity calculation of the material under radiation interference of different gases.

This invention relates to the field of electronic display technology, and more particularly to an online self-calibration system for the brightness and color of display backlight zones based on optical feedback. The system includes an acquisition module, a judgment module, a light and color calibration module, a determination module, a control calibration module, a prompting module, and an adjustment module. This invention acquires multi-dimensional parameters, synthesizes dynamic interference intensity based on tilt angle, spot illuminance, and infrared transmittance, and compares it with a preset threshold to determine the presence of interference. When interference is detected, the system compensates for the measured brightness and color temperature using the dynamic interference intensity and infrared transmittance, outputting a calibration value reflecting the true light-emitting state of the backlight. It adjusts the backlight drive current and PWM duty cycle through a collaborative calibration factor. Simultaneously, when performance degradation reaches a preset condition, a prompt is issued and the interference threshold is dynamically adjusted. This effectively solves the problems of low calibration accuracy and poor cross-screen consistency caused by the inability to distinguish between environmental interference and backlight aging, and the lack of multi-screen collaboration.

This product is a semiconductor inspection machine for inspecting wafers on which semiconductor devices are formed for the presence or absence of defects. This product comprises a metal ring and a camera positioned in the center of the ring. When in use, the wafer is placed in the circular recess. The metal ring allows for stable placement of the wafer without bending it. Furthermore, the wafer can be securely fixed by vacuum suction through the large hole. The camera detects the emission of light in the infrared region that passes through the wafer, thereby inspecting for the presence or absence of defects in the semiconductor device. The camera is made of a material that transmits light in the infrared region and is not transparent or semi-transparent to visible light. As shown in the "Reference Diagram Showing the Usage State," the wafer position can be adjusted by sliding the support part. Furthermore, when moving the wafer, the wafer can be levitated by blowing air from the small hole, making it easy to move.