28 results about "Nir light" patented technology

A time-of-flight (ToF) sensor includes a photodetector array and a processing circuit. The photodetector array includes a plurality of photodetectors wherein each photodetector of the photodetector array includes a silicon-based, light-sensitive diode. Each silicon-based, light-sensitive diode includes a photosensitive layer comprising a plurality of quantum dot particles sensitive to a near infrared (NIR) region of an electromagnetic spectrum, wherein the plurality of quantum dot particles converts optical energy into electrical energy to generate an electrical current in response to receiving NIR light having a wavelength in the NIR region. The processing circuit is configured to receive the electrical current and calculate a time-of-flight of the received NIR light based on the electrical current.

The near-infrared wearable subcutaneous fat metabolism monitoring device comprises a flexible substrate, a multi-wavelength NIR light source array, a photoelectric detector, a motion artifact suppression module, a wireless transmission unit, a fixing band and a photonic crystal enhanced detector, and the flexible substrate comprises a biocompatible layer, an optical window array and a pressure sensing layer. The wavelength of the multi-wavelength NIR light source array is 760nm / 850nm / 930nm / 980nm, the photoelectric detector is high-sensitivity InGaAs, the motion artifact suppression module is provided with an embedded signal processing module, the embedded signal processing module contains a motion artifact elimination algorithm, the wireless transmission unit is BLE5.0, the fixing band is connected with the flexible substrate, and the flexible substrate is connected with the fixed band. A first subcutaneous fat oxidation characteristic database based on time-frequency analysis is established by installing a fat oxidation dynamic fingerprint spectrum technology, FODS = summa 850980d [mu] a (lambda, t) dt.e-j2pif0tdt (f0 = 0.05 Hz) FODS = summa 850980dtd [mu] a (lambda, t). E-j2pif0tdt (f0 = 0.05 Hz), metabolic oscillation characteristics are extracted through wavelet-Hilbert transform, and a metabolic activity quantitative evaluation core algorithm WO2023 / 123456 is realized.

In general, the disclosure describes a sensor comprising a photo-sensitive silicon substrate configured to detect ultraviolet (UV), visible, and near-infrared (NIR) light and an upconversion layer comprising a plurality of crystals configured to convert short wave infrared light to UV, visible, or NIR light. An example sensor includes an upconversion layer comprising a plurality of crystals configured to convert electromagnetic radiation comprising a first range of wavelengths greater than 1100 nm to electromagnetic radiation comprising a second range of wavelengths less than or equal to 1100 nm and a photo-sensitive silicon substrate configured to detect the electromagnetic radiation comprising the second range of wavelengths.

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.

Disclosed herein is a coating composition being a basecoat or a clearcoat composition and including at least one polymer as a film-forming binder (A), nanoparticles (B) containing at least one noble metal and / or at least one alloy and / or oxide thereof, as well as water and / or at least one organic solvent as component (C) being present in the coating composition in an amount of at least 30 wt.-%, based on the total weight of the composition. Further disclosed herein are a coating film and a coating obtainable from the coating composition, a method of forming a coating film and a coating at least partially onto at least one surface of a substrate, and an at least partially coated substrate obtainable by the method.

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.

The invention provides a light generating system (1000) comprising an elongated light generating device (100), and an elongated collimator lens (4000) that comprises a light transparent material and that is configured in a light receiving relationship with the elongated light generating device (100); wherein the elongated collimator lens (4000) comprises an axis of elongation (A1) and an elongated cavity (400) along the axis of elongation (A1), wherein the elongated light generating device (100) is configured in the elongated cavity (400), wherein the elongated light generating device (100) is configured to generate a first beam (5) of device light (101) with a non-zero light intensity over the entire range of 30-150° and 210-330° around the axis of elongation (A1), wherein the light transparent material encloses the axis of elongation (A1) over an angle (γ) of at least 260°, thereby defining the elongated cavity (400); and wherein the elongated collimator lens (4000) comprises in a cross-sectional view perpendicular to the axis of elongation (A1): (i) a light exit face (4010), (ii) a first total internal reflection face (4020), and (iii) a second total internal reflection face (4030); and (B) the elongated collimator lens (4000) is configured such that for device light (101) provided by an elongated light generating device (100) configured in the elongated cavity (400) and having an omnidirectional light distribution around the axis of elongation (A1) applies that: (i) a reflected part (12) escapes from the elongated collimator lens (4000) via the light exit face (4010) after a single total internal reflection at the first total internal reflection face (4020), and (ii) a double reflected part (13) escapes from the elongated collimator lens (4000) via the light exit face (4010) after a first total internal reflection at the second total internal reflection face (4030) and subsequently a second total internal reflection at the first total internal reflection face (4020).

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.

This invention relates to a mineralizing solution, a photoresponsive biomimetic mineralized dentin micro / nanostructure, and its preparation method. The mineralizing solution comprises 100–1000 μg / mL of carboxylated gold nanoparticles, 4.0–5.0 mmol / L of calcium source, and 1.5–2.5 mmol / L of phosphorus source. Demineralized dentin sheets are placed in the above mineralizing solution for biomimetic mineralization, forming a photoresponsive biomimetic mineralized dentin composite micro / nanostructure. This invention uses carboxylated gold nanoparticles with calcium and phosphorus sources to form a calcium phosphate mineralizing solution containing gold nanoparticles, which can achieve complete remineralization of demineralized dentin. By controlling the concentration of carboxylated gold nanoparticles, the mineralization effect is ensured, achieving the formation of HAP crystals within the demineralized dentin collagen, restoring the dentin hierarchical structure, and restoring the mechanical properties of dentin to a level comparable to natural dentin. Simultaneously, it can synergistically generate thermal stimulation and reactive oxygen species under NIR light irradiation, exhibiting excellent biocompatibility and antibacterial activity under near-infrared light stimulation.

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 invention discloses a metal-doped hollow mesoporous carbon nano-enzyme anti-tumor delivery system and application thereof, and belongs to the technical field of medicines. The anti-tumor delivery system is composed of a metal ion doped nano enzyme, a photosensitizer and a biocompatible group, according to the delivery system, POD-like activity and GSH expression of depleting the tumor microenvironment are exerted through the metal ion doped nano-enzyme, meanwhile, mild heating of the tumor microenvironment is achieved by utilizing the excellent photothermal conversion performance of the metal ion doped nano-enzyme and combining with NIR light, the photosensitizer can generate ROS under stimulation of the NIR light to oxidize and kill tumor cells, and the tumor microenvironment can be effectively protected. And similar POD enhanced synergistic photothermal therapy and photodynamic therapy are realized. According to the nano enzyme capable of adjusting the oxidation-reduction level, a photothermal therapy and a photodynamic therapy are combined to realize efficient tumor growth inhibition, and an important reference is provided for multi-mode tumor treatment.

The invention relates to a compound with a cyanine skeleton structure, which has a structure as shown in a formula I. In the formula, A represents, R1 represents halogen, especially chlorine; n is 0 or 1; r represents a benzene ring or a naphthalene ring; y represents a halogen anion, especially an iodide ion. The compound disclosed by the invention has a high molar extinction coefficient and a wide absorption spectrum, can effectively absorb energy of NIR light, and has the potential of serving as an NIR photosensitizer; the synthesis method is simple, and raw materials are easily available. In addition, the invention also relates to a synthesis method and application of the compound.

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.

An intraoral scanner system includes a probe, un-patterned light sources, fluorescence-inducing light sources and near infrared (NIR) light sources couple to the probe. The system includes cameras coupled to the probe. The system including one or more processing devices configured to control an operation of the un-patterned light sources, the fluorescence-inducing light sources and the NIR light sources. The one or more processing devices are configured to alternately illuminate the dental site using different light sources among the un-patterned light sources, the fluorescence-inducing light sources, and the near infrared (NIR) light sources to generate a first image corresponding to the dental site and a second image corresponding to the dental site. The one or more processing devices are further configured to generate, using the first image and the second image, a composite image that reduces a loss of image contrast from returning light from the dental site.

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.

A wrapping film includes a transparent film with an ultraviolet-near infrared (UV-NIR) active layer and a visibly transparent infrared (VTIR) reflective layer. The transparent film is configured to be wrapped onto a surface, the UV-NIR active layer is configured to absorb at least one of UV light or NIR light and emit IR light, and the VTIR reflective layer is configured to reflect the emitted IR light. The wrapping film also includes a photovoltaic solar cell disposed on an edge of and in optical communication with the transparent film and the photovoltaic solar cell is configured to receive the reflected IR light and generate electricity.

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 present disclosure relates to combined near-infrared imaging and visible imaging in a compact microscope stack. Both a visible light camera and an IR camera are integrated without increasing the optical stack height of a surgical microscope used for ophthalmic surgery. The IR camera can be used to directly and intraoperatively capture a scanning OCT measurement beam using NIR light that is not visible to the human eye. IR images from the IR camera taken of the same surgical field displayed to the user of the surgical microscope can be displayed in the user's oculars, enabling visualization of the location of the OCT scan as well as the actual visible light image of the surgical field.

An illustrative method includes receiving data representing information captured using a first sensor and a second sensor of a multi-sensor camera associated with a surgical device. The sensors are configured to capture a surgical scene comprising biological tissues as illuminated by a light source configured to emit wavelengths in the visible spectrum corresponding to sensing capabilities of the sensors, respectively. The method further comprises receiving data representing information captured using a third sensor of the multi-sensor camera, the third sensor configured to capture the surgical scene as illuminated by a NIR light source, generating a first visual representation of the surgical scene based on the data representing the information captured using the sensors, combining the first visual representation with the information captured using the third sensor to generate a second visual representation of the surgical scene, and presenting the second visual representation of the surgical scene on a display device.

The present invention provides light-responsive polypeptides having diguanylate cyclase (DGC) activity, nucleic acid molecules encoding such polypeptides, host cells comprising such polypeptides or nucleic acid molecules, compositions, and methods of their use. More particularly, the present invention provides a NIR light-responsive DGC polypeptide variant with increased enzymatic activity and sensitivity to NIR light compared to its parental polypeptide to allow more dynamic control of intracellular c-di-GMP dynamics with various in vitro and in vivo applications.

The invention relates to a laminated hybrid solar cell. A stacked photovoltaic PV device includes: a substrate; a reflector layer on one side of the substrate; a first PV sub-cell in optical communication with the reflector layer configured to absorb visible light; and a second PV sub-cell on the first PV sub-cell configured to absorb NIR light.

The invention provides a novel class of long-acting photoreceptor-binding nanoparticles, methods of their preparation, and compositions and uses thereof. The invention also relates to use of such nanoparticles and compositions for NIR light sensation and pattern vision, visual enhancement and repair, and other ophthalmology therapies.

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.