276 results about "Optical property" patented technology

The invention relates to a material that is at least partially transparent and that has structures introduced into its internal volume after material production, which modify the volume with respect to its optical properties compared to the unstructured volume. The material according to the invention is characterized by its formation as an at least partially transparent surface coating, wherein the structure comprises modification bubbles that are formed in at least one plane within the volume.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing symmetric or asymmetric optic with aspheric surface which redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the intraocular lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

Various measurement systems and methods are disclosed to enable characterizing the optical characteristics of light beams emitted by a light detection and range finding (LIDAR) system or sensor and evaluating the range finding function of user selected lidar channels while the lidar operates under a real operational condition and is exposed to a range of user defined environmental conditions.

The application discloses a three-dimensional near-infrared spectral tomography reconstruction method based on a mask prior, and belongs to the field of medical image processing. The method respectively performs multi-scale convolution coding on NIRST optical signals and MRI volume data to obtain features, then embeds structural information of a mask as a prior condition into a feature fusion module, dynamically adjusts spatial weights in the fusion process of multi-scale structural information and optical functional information, so that the network focuses on potential lesion areas and suppresses background noise, and finally reconstructs the optical parameter distribution of the tissue through a three-dimensional decoding network. The method provided by the application can effectively reduce the ill-posedness in the NIRST reconstruction problem, reduce artifact generation, improve the positioning accuracy of the tumor area and the optical property reconstruction quality, and reconstruct the optical property parameter distribution of the biological tissue.

This invention relates to the field of encryption and anti-counterfeiting technology, specifically to a method for preparing and using an organic Sn(IV)-based metal halide reversible light-emitting conversion triple anti-counterfeiting material, comprising introducing organic ligands into a Sn(IV)X4 lattice and doping with ns 2 This invention uses Sn(IV) with a high oxidation state to replace Pb(II) in order to obtain anti-counterfeiting materials. 4+ The outer electron configuration is 4d 10 5s 0 The absence of unstable 5s orbitals gives Sn(IV)-based metal halides their typically excellent environmental and thermal stability, providing the compounds with a rigid crystal structure and stereochemical inertness. Furthermore, through ns... 2 Type Sb metal ions 3+ Doping strategies are employed to enhance the luminescence efficiency of low-dimensional organotin (IV)-based metal halides. This invention utilizes Sb... 3+ Ion doping methods are used to modulate the optical properties of compounds. Sb 3+ Ions belong to ns 2 Type metal ions and Sn 4+ With similar ionic radii and unique photophysical properties, it solves the problem of low luminous efficiency in existing luminescent materials.

Provided is a camera optical lens, including eight lenses each having a refractive power. A focal length of the camera optical lens is f, a focal length of the first lens is f1, a focal length of the second lens is f2, a central curvature radius of an object side surface of the second lens is R3, a central curvature radius of an image side surface of the second lens is R4, a central curvature radius of an object side surface of the fourth lens is R7, and a central curvature radius of an image side surface of the fourth lens is R8, and the following relational expressions are satisfied: −7.10≤f2 / (R3−R4)≤−1.50; 1.49≤R7 / R8≤3.01; and 0.95≤f1 / f≤1.16. The camera optical lens has excellent optical characteristics, as well as wide-angle and ultra-thin characteristics.

This invention discloses a quantitative method for phospholipids, comprising: a sample preparation step, wherein a sample containing protein and phospholipids is mixed with Schiff reagent to obtain a sample for testing; a control sample preparation step, wherein the sample is mixed with a solvent of Schiff reagent to obtain a control sample; a measurement step, wherein the degree of a first optical property of the sample for testing and the degree of an optical property of the control sample are measured after the reaction of the aldehyde formed by the vinyl ether bond of phospholipids with Schiff reagent; and a determination step, wherein a correction degree obtained by correcting the degree of the first optical property using the degree of the optical property of the control sample is compared with the degree of a second optical property of the standard sample to determine the concentration of phospholipids in the sample, wherein the standard sample contains Schiff reagent and phospholipids of known concentration, and the degree of the second optical property is the degree of reaction of the Schiff reagent with the aldehyde formed by the vinyl ether bond of phospholipids.

This invention relates to the field of augmented reality technology and discloses an augmented reality image synthesis method based on the optical properties of pearlescent pigments. The method includes: acquiring spectral reflectance data of pearlescent pigments under different illumination and viewing angles; analyzing the spectral reflectance data to calculate color correlation metrics under multiple angle combinations, thereby determining the delay parameter for signal transmission between angles; using the delay parameter and the distribution characteristics of the spectral reflectance data within a preset time interval to derive a gloss fluctuation index of the pearlescent pigment within the time interval; combining the gloss fluctuation index and the attribute differences of the spectral reflectance data after frequency domain transformation to evaluate the synthesis interference probability at each frequency point and extract key interference frequencies; integrating the distribution patterns of all key interference frequencies to generate an image rendering error probability; and finally adjusting the texture rendering parameters of virtual objects in the augmented reality scene according to the image rendering error probability to achieve the generation and output of the synthesized image.

A method for depositing a silicon layer is provided in which the stresses of the layer can be adjusted while maintaining its optical properties. A silicon target (3) and a substrate (Sw) are arranged in a vacuum chamber (1) to form a layer on the substrate. A sputtering gas is introduced into the vacuum chamber (1) in a vacuum atmosphere. The target is charged with electrical energy to form a silicon layer (Sf) on the surface of the substrate by sputtering. The silicon layer deposition is carried out in two independent steps: a first step to deposit a first silicon layer (Sf1) with a columnar structure, and a second step to deposit a second silicon layer (Sf2) with a columnar structure and a higher layer density than the first silicon layer.

[Problem] To provide a light detection device capable of improving optical characteristics related to reception of color light. [Solution] A light detection device according to an embodiment of the present disclosure includes a lens on which light is incident, a color filter that transmits a specific color light included in the light that has passed through the lens, and a photoelectric conversion element that photoelectrically converts the specific color light received through the color filter. The color filter includes a first portion having a first refractive index and a second portion having a second refractive index different from the first refractive index.

This suppresses the tilting of the convex portions of the grid structure caused by the formation of the functional film, thereby improving optical properties. [Solution] The wire grid polarizing element 1 comprises a substrate 10, a grid structure 20 in which a base portion 21 and a plurality of protrusions 22 are integrally formed, a functional film 30 covering a portion of the protrusions 22, and a reinforcing film 51. The reinforcing film 51 is made of an inorganic oxide and is interposed between a portion of the protrusions 33 covered by the functional film 30 and the functional film 30, reinforcing the protrusions 22. The reinforcing film 51 covers at least the tip 22a and the upper sides of both sides 22b of the protrusions 22. The functional film 30 covers the top of the protrusions 22 via the reinforcing film 51, but does not cover the bottom side of the protrusions 22 or the base portion 21, and its coverage rate (Rc) is 30% or more and 70% or less.

This invention discloses a method for manufacturing a zero-layer alignment mark, comprising the steps of: forming a zero-layer first mask layer; photolithography defining the formation area of ​​the zero-layer alignment mark; etching the zero-layer first mask layer and a semiconductor substrate to form a first trench; forming a first material layer to completely fill the first trench, wherein the first material layer and the zero-layer first mask layer are made of different materials, and the different materials of the first material layer and the semiconductor substrate result in different optical properties; performing CMP to make the top surface of the first material layer within the first trench flush with the top surface of the zero-layer first mask layer; removing the zero-layer first mask layer; and performing epitaxial growth on the surface of the semiconductor substrate outside the first material layer to form a first epitaxial layer, wherein the top surface of the first epitaxial layer is flush with the top surface of the first material layer, and the first material layer and the bottom trench together constitute the zero-layer alignment mark. This invention can maintain the good morphology of the zero-layer alignment mark and improve its contrast.

The invention relates to an optoelectronic device (1) comprising an assembly (10) of photonic crystals (100, 200, 300, 400) intended to emit a light beam mainly having a wavelength λ. This assembly comprises at least one first elementary photonic crystal (100) that comprises an assembly of first nanowires (101) and is configured to emit a first elementary light beam mainly having the wavelength λ, and a second elementary photonic crystal (200) that comprises an assembly of second nanowires (201) and is configured to emit a second elementary light beam mainly having the wavelength λ. The elementary photonic crystals (100, 200) have distinct structures, so as to give the elementary light beams at least one distinct optical characteristic. The light beam emitted by the photonic crystal assembly can be formed by the first elementary light beam and / or the second elementary light beam.

This invention discloses a superhydrophobic radiation-cooling polymer coating, its preparation method, and its application. The coating is white and possesses a bicontinuous micro / nano porous structure. It is prepared by a ternary copolymerization reaction of polyurethane acrylate oligomers, acrylate reactive diluents, and vinyl siloxane porogens. The method involves initiating free radical polymerization of monomers in the porogen under ultraviolet light, inducing rapid phase separation, and naturally evaporating the porogen to obtain the coating. This coating exhibits superhydrophobicity without post-treatment, virtually no absorption in the solar spectrum, and near-100% emissivity in the mid-infrared window. Furthermore, the optical properties and superhydrophobicity of the coating are minimally affected by long-term ultraviolet irradiation, thermal aging, acids, and alkalis. This coating can be applied over large areas in high-performance radiation-cooling applications.

This invention discloses a method for preparing a covalent organic framework-cellulose composite aerogel and its application, belonging to the field of porous functional materials and solar energy utilization technology. The composite aerogel uses cellulose nanofibers as a framework, constructs a cross-linked network through γ-glycidoxypropyltrimethoxysilane and polyethyleneimine, and introduces a covalent organic framework material as a functional component. Through directional freeze-drying and lyophilization, an aerogel material with a directional continuous pore structure is formed. The covalent organic framework material has tunable molecular structure and optical properties, enabling the composite aerogel to simultaneously possess light absorption, photothermal conversion, and photocatalytic reaction activity. The directional pore structure facilitates rapid water transport and vapor escape, and inhibits salt accumulation, thereby improving the solar interfacial evaporation efficiency. By controlling the structural type and loading content of the covalent organic framework, the synergistic process of photothermal evaporation and photocatalytic hydrogen peroxide production can be achieved, improving the overall solar energy utilization efficiency.

Embodiments of the present application provide a photovoltaic module shadow defect identification method and system based on multispectral imaging. In the method, through the multispectral image data of the surface of the photovoltaic module, the intrinsic features directly related to the material characteristics are extracted by using feature decomposition technology, and a multi-dimensional intrinsic color space capable of accurately reflecting the material characteristics of the module is constructed. By analyzing the relative relationship between the reflectivities of different wave bands, the adaptive clustering algorithm is used to divide the normal area, the shadow area and the defect area in the multi-dimensional intrinsic color space, and based on the material optical characteristics, the two-level identification strategy is used to identify the real defects in the shadow area, so that the accurate identification of the real defects of the photovoltaic module in the complex shadow environment is realized.

Title: Optoelectronic Device with Controlled Light Emission Profile The invention relates to an optoelectronic device (1) comprising an assembly (10) of photonic crystals (100, 200, 300, 400) for emitting a light beam having predominantly a wavelength λ. This assembly comprises at least one first elementary photonic crystal (100) comprising an assembly of first nanowires (101) and configured to emit a first elementary light beam having predominantly the wavelength λ, and a second elementary photonic crystal (200) comprising an assembly of second nanowires (201) and configured to emit a second elementary light beam having predominantly the wavelength λ. The elementary photonic crystals (100, 200) have distinct structures, so as to impart to the elementary light beams at least one distinct optical characteristic.The light beam emitted by the set of photonic crystals can be formed by the first elementary light beam and / or the second elementary light beam. Figure for the abbreviation: Fig. 2A.

A method of heat treating an optically non-transparent substrate using radiant energy. In some embodiments, the method includes flipping the optically non-transparent substrate to expose a non-structured side, depositing an opaque heat layer on the non-structured side of the optically non-transparent substrate, wherein the opaque heat layer has a uniform thickness, flipping the optically non-transparent substrate to expose the structured side, and heat treating the optically non-transparent substrate above about 900 °C. In some embodiments, the opaque heat layer is composed of amorphous carbon, composed of multiple layers of amorphous carbon, adjacent layers of the multiple layers have different optical properties, or composed of alternating layers of different materials, wherein a first layer of the alternating layers is composed of an amorphous carbon material and wherein a second layer of the alternating layers is composed of an amorphous silicon (Si)-based material.

The invention provides a carbon fiber prepreg paving real-time positioning calibration method and system. The method comprises the following steps: acquiring paving process parameters which influence the optical characteristics of the surface of a prepreg strip; collecting visual information of the edge of the prepreg strip, and extracting visual characteristics reflecting the optical characteristics of the surface of the prepreg strip from the visual information; presetting an association relationship between the paving process parameters and the visual features; receiving a visual measurement result indicating that the paving position of the prepreg strip has deviation; according to the paving process parameters, the visual features and the incidence relation, the source of paving position deviation is judged; and executing calibration or compensation operation according to the judgment result of the deviation source. According to the invention, invalid calibration or accumulative errors caused by misjudgment can be avoided.

This invention relates to a method for generating massive multi-band images using machine learning for space-based target detection. The method calculates the optical properties of a 3D target, fuses the target's optical image into a 2D background, and can quickly simulate multi-band optical images. Addressing the problem of insufficient training samples in multi-band machine learning target detection algorithms, this paper proposes a fast calculation method for target-background fusion. This method includes simulating the background's optical image in multiple bands, adding a target optical property image with a shadow effect to the background using a 3D model optical property calculation method, and simulating different time conditions through meteorological parameter settings and temperature calculations. Experiments show that this method can quickly simulate multi-band optical images fused with 3D targets while maintaining the accuracy of optical property calculation.

Several variants of synthetic carbon materials are disclosed. The materials can exhibit a variety of properties, including high electrical conductivity. The materials can also have advantageous structural and mechanical properties. They can form a gas-impermeable barrier layer, form insulating structures, and can have unique optical properties.

This invention discloses a thermochromic smart window, which contains at least one layer of thermochromic material. The core functional material of the thermochromic material is a core-shell structured thermochromic material, with doped vanadium dioxide nanoparticles as the core and a metal-organic framework as the shell. The thermochromic smart window of this invention exhibits high stability, good optical properties, and the ability to achieve synergistic photothermal response, making it particularly suitable for home use. Furthermore, its preparation method is simple, requires mild conditions, and is highly compatible with existing laminated glass manufacturing processes, facilitating industrialization. It not only responds to changes in ambient temperature but also sensitively responds to changes in solar radiation intensity, achieving intelligent regulation of solar thermal energy.

The application provides an article visual recognition method and system for a multi-pass automatic sorting platform of a vertical warehouse, and relates to the technical field of visual recognition. Before an article moves rapidly into a main recognition area, a multi-spectrum light source with different spectral components is controlled to irradiate the article in a pulse form, and a multi-spectrum response image is captured synchronously to obtain spectral response characteristics of the article surface to different spectral components. Based on the spectral response characteristics, the optical characteristics of the article surface are accurately determined. According to the determined optical characteristics, the illumination parameters of the main recognition area and the exposure parameters of a main image acquisition unit are intelligently adjusted. Image acquisition, feature extraction and identity determination are performed according to the adjusted illumination and exposure parameters, which can significantly improve the recognition accuracy and stability of the article, thereby improving the efficiency and reliability of the entire automatic sorting platform.

The present application provides a polyvinyl acetal resin having a specific surface area of 0.1000 to 1.4000 m 2 / g, an apparent specific gravity of 0.200 to 0.350 g / cm 3 , and a D50 particle size of 75.0 to 187.5 μm. The polyvinyl acetal resin of the present application can be applied to various purposes, such as an interlayer film for laminated glass, a paint, or an adhesive. The subsequent product made from the polyvinyl acetal resin of the present application has excellent optical properties, such as low yellowness, high penetration, and high brightness, and the subsequent product made from the polyvinyl acetal resin of the present application still has the aforementioned good optical properties after the polyvinyl acetal resin is left to stand at room temperature for 48 hours, which means that the polyvinyl acetal resin also has excellent stability.

This invention provides an intelligent adjustment device and method for an Er-doped solid-state laser, comprising a four-mirror cavity laser resonator consisting of a pump source, a collimating mirror, a focusing mirror, an input end mirror, an Er-doped laser crystal, an end mirror, an output coupling mirror, and a high-reflectivity mirror; and an automatic control system consisting of a PC information processing module, a visible light probe detection module, a feedback control module including a cavity mirror control rail and an angle controller, and an infrared optical power meter. The visible light probe detects the intensity change of the upconversion light from the Er-doped laser crystal in real time, which is verified by the infrared optical power meter. The PC module controls the feedback module to adjust the cavity mirror distance and angle to achieve closed-loop control. This invention utilizes optical characteristics to replace detection and intelligent closed-loop control, solving the problems of high cost and slow response of traditional 3-micron lasers, achieving low-cost, high-response automated cavity mirror control, and possessing advantages such as cost savings, fast response, and strong fault tolerance.

The present application relates to the technical field of high polymer composite material processing, and particularly relates to an online detection method and system for high polymer composite material processing and a medium, the method comprising: controlling a hot-press forming device to hot-press form mixed and uniform high polymer composite material to obtain a high polymer composite material sample to be detected; controlling a detection device installed at an outlet end of the hot-press forming device to sequentially perform rheological property detection and optical property detection on the high polymer composite material sample to obtain rheological property data and an infrared spectrum; wherein the rheological property data comprises at least one of viscosity, elastic modulus and yield stress; determining a performance parameter of the high polymer composite material sample based on the rheological property data and the infrared spectrum; determining an adjustment parameter based on the performance parameter and a preset standard parameter, and adjusting the hot-press forming device based on the adjustment parameter; and the present application can adjust process parameters in real time and improve processing efficiency.