13 results about "Nir light" patented technology

A camera module includes a housing with an opening and a portion that surrounds the opening, wherein the portion of the housing is transparent to near infrared (NIR) light. A fisheye lens is disposed within the opening such that a portion of the fisheye lens protrudes through the opening. An image sensor is disposed within the housing and optically coupled to the fisheye lens. The image sensor is sensitive to visible light and NIR light. A plurality of NIR light emitters is disposed within the housing. The NIR light emitters are configured to emit NIR light through the NIR-transparent portion of the housing. The NIR-transparent portion of the housing may include a light-diffusing structure, such as a pattern of microlenses formed on an inner surface of the NIR-transparent portion of the housing, to spread out the NIR light emitted by the NIR light emitters.

The application provides a pH and near-infrared light dual-response photocage compound and application thereof. The photocage compound comprises a silicon-xanthene ion skeleton and a molecular residue Cargo, and the silicon-xanthene ion skeleton is connected with the Cargo through a Linker. The PPG core skeleton of the application not only responds to near-infrared light irradiation, but also introduces a response mechanism to pH conditions. Compared with the existing PPG which only depends on light triggering, the dual-gating of 'environment (tumor acidity) + external triggering (NIR light)' is realized, the spatiotemporal accuracy and targeting selectivity of active molecule release are significantly improved, and the non-specific release in non-target tissues is reduced, thereby reducing systemic toxicity.

Rapid-darkening and wavelength-tunable photochromic compositions and systems are disclosed. Nanoparticles photochromically darken in response to incident light by photo-oxidizing a dopant to reversibly create an optically absorbing mid-gap electronic state. The wavelengths that trigger photochromic darkening as well as the absorbed wavelengths may be tuned by changing the nanoparticle composition, the nanoparticle size, and / or the dopant. The time for reversal of darkening may be tuned using hole-accepting ligands attached to the nanoparticles as well as hole-accepting molecules adjacent to the nanoparticles. Some variations provide a photochromic composition comprising: semiconductor nanoparticles, such as PbS or Ag2S, that have an average nanoparticle effective diameter from about 1 nanometer to about 20 nanometers; and transition-metal dopant particles capable of undergoing reversible oxidation and reduction. In the disclosed systems, there is an on / off switch for the photochromic function. Many photochromic uses are described.

Shape-restoring materials, as well as techniques for generating shape-restoring materials, are described. An example method includes generating a construct by exposing, to UV-visible light, a resin comprising a globular protein, a water-soluble co-monomer, light-to-heat converting nanoparticles, water, and a photoinitiator. At least a portion of the water is removed from the construct. The construct is converted from a first shape to a second shape by applying a force to the construct. The construct is reverted to the first shape in response to being exposed to NIR light, due to the absorption of the NIR light by the nanoparticles.

The application relates to the technical field of biological rhythm monitoring methods, and discloses a non-interference monitoring method for effectively monitoring internal biological rhythm. The application realizes the non-interference monitoring method for effectively monitoring internal biological rhythm through the following steps: constructing a high-spectrum imaging biological rhythm monitoring technology based on a wideband NIR-LED light source, constructing an algorithm for matching human rhythm data measurement and recognition, and optimizing an artificial lighting light environment matched with a circadian rhythm. The non-interference rhythm monitoring method combines the NIR light source with the high-spectrum imaging technology, reflects the biological rhythm through the interpretation of the facial near-infrared absorption grayscale image, clearly defines the non-interference rhythm monitoring mode combining the near range and the long range, and finally converts and simulates according to the circadian rhythm to guide the synchronous conversion of the biological rhythm of personnel, so that the non-interference monitoring research on the biological rhythm is completed. The research method is not only scientific, but also more accurate in research conclusion.

The present invention relates to a procedure for the conversion of γ-ketoacids, such as levulinic acid, to γ‑lactones in the presence of a Ni-based catalyst and isopropanol as hydrogen source and solvent via photothermal process using UV to NIR light as energy source (such as solar and laser). This is a sustainable, economically and environmentally viable procedure that has demonstrated nearly complete conversion in less than 2h under moderate conditions.

The application discloses a preparation method of a photo-activated CRISPR high-molecular nano carrier for specific gene therapy, and comprises the following steps: a preparation method of a CRISPR high-molecular nano carrier, a preparation of a stable polymer-DNA carrier, a preparation of a polymer-DNA-sgRNA, performance verification of an organic high-molecular nano carrier, performance and curative effect verification of the organic high-molecular nano carrier at a cell level, and performance and curative effect verification of the organic high-molecular nano carrier at an animal level. The nano carrier is prepared under mild conditions, is safe and reliable, can realize precise regulation and control of CRISPR / Cas9 delivery and activity by using an NIR light response type nano carrier, realizes release of sgRNA, and has a good anti-tumor effect.

This invention discloses a temperature-responsive hydrogel with a low critical solution temperature 37°C higher than physiological temperature. It is formed by the polymerization reaction of comonomers N-isopropylacrylamide, 1-pyrene methacrylate, and acrylic acid with a crosslinking agent initiated by a free radical initiator. This invention further provides an enzyme-carrying hydrogel prepared from the aforementioned temperature-responsive hydrogel and a carbon nanotube-enzyme-carrying hydrogel composite material. The carbon nanotube-enzyme-carrying hydrogel composite material of this invention is in a swollen state at physiological temperature, and its reversible swelling-contraction changes, regulated by near-infrared light, dynamically regulate the catalytic activity of biological enzymes. Furthermore, carbon nanotubes possess excellent conductivity, and changes in the microgel morphology promote electron transfer within the three-dimensional conductive framework of the composite material, thereby enhancing the electrochemical response. The carbon nanotube-enzyme-carrying hydrogel composite material of this invention can be used to construct intelligent sensors suitable for in vivo controlled analysis.

The present invention is directed to nanoparticle-polymer composites for efficient emission of light. Certain nanoparticle-polymer composites of the present invention have been found to exhibit higher photoluminescence quantum yield and narrower photoluminescence linewidth than the same materials disposed in liquid solvents. In some embodiments, the composites include quantum dots that have a first semiconductor core material made from CuInSexS2-x, CuInGaSexS2-x, AgInSexS2-x, AgInGaSexS2-x, PbS, PbSe, InAs, InP, Cd3P2, CdS, CdSe, and CdTe semiconductor compositions. In some embodiments the composites include a polyolefin elastomer polymer. Furthermore, the tunability of emission peaks from these novel fluorescent polymer composites make them suitable for down-conversion of visible and UV light into visible and NIR light. In some embodiments these nanoparticles are incorporated into solar modules to improve power conversion efficiency.

Systems, devices, and methods for enhanced tissue imaging and biochemical detection using near-infrared (NIR) illumination in conjunction with resonant structures, such as whispering gallery mode (WGM) resonators and dielectric waveguides are proposed that operate in either transmission mode—where NIR light passes through a target sample—or reflection mode—where reflected NIR signals are recoupled into the sensing structure. These configurations support low-cost, flexible, real-time, and high-sensitivity analysis across a broad spectrum of biological and non-biological specimens, thereby enabling applications in tissue diagnostics, immunoassay-based detection, and material characterization, including deployment in point-of-care and resource-limited environments.

The present application relates to the technical field of image processing and analysis, and further relates to a canyon watershed vegetation community and coverage intelligent analysis method based on multispectrum, comprising the following steps: step S1: acquiring active NIR light supplement multispectrum images and natural light multispectrum images of a low-altitude key area and recording unified time stamps and pose records; step S2: generating a shadow candidate area mask based on the natural light registration images, generating a shadow boundary band and a reference ring band, forming a shadow invariant representation graph through a cancellation gate control editor, and obtaining a vegetation community category grid and a coverage grid through a vegetation community decoder and a coverage decoder; step S3: performing route inlay on the vegetation community category grid and the coverage grid of the low-altitude key area, and outputting a canyon watershed vegetation community graph and a canyon watershed coverage graph. The present application can effectively weaken the interference of shadows on multispectrum features and significantly improve the accuracy of vegetation community recognition in complex canyon environments.

The invention discloses a vagus nerve double-targeting delivery carrier as well as a preparation method and application thereof. According to the vagus nerve double-targeting delivery carrier, the surface of a nano carrier is simultaneously modified with a first targeting ligand capable of being combined with a nicotinic acetylcholine receptor on the surface of vagus nerve cells and a second targeting ligand capable of being specifically combined with a transient receptor potential channel. The enrichment efficiency and the spatial selectivity of the photoresponse nano-carrier in the vagus nerve area are effectively improved through a targeting delivery strategy of lymphatic path guidance and double receptor molecule recognition, the specific targeting of the photoresponse nano-carrier to the vagus nerve is enhanced, and in the follow-up NIR light irradiation process, the photoresponse nano-carrier has a good application prospect. Effective activation of the vagus nerve can be realized under lower optical power density, non-specific stimulation to surrounding non-target tissues is remarkably reduced, and safety and accuracy of light regulation of the vagus nerve are improved.

This invention relates to the field of optical technology and provides a short-to-mid-wave infrared broadband relay imaging system. Along the optical path, it sequentially includes a stepped micromirror, a beam splitter, a compensation plate, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a filter, a detector window, a cold stop, and a detector back focal plane. The six lenses are, respectively, a zero-power wedge plate, a positive-power cylindrical lens, a positive-power binary diffraction positive meniscus lens, a negative-power negative meniscus lens, a negative-power negative meniscus lens, and a positive-power positive meniscus lens. By combining the wedge plate and the cylindrical mirror, it eliminates large-scale astigmatism in the broadband infrared band, achieving broadband infrared chromatic aberration correction and thermal-free design. It solves the significant difference in imaging transfer functions between the meridional and sagittal directions of the lens, addresses the problem of reduced transfer function, and can meet the imaging requirements of the short-to-mid-wave infrared band under complex environmental conditions.