59 results about "Nir light" patented technology

A medical imaging system includes a first imaging element that receives NIR light and outputs a first image signal, a second imaging element that receives normal light and outputs a second image signal, a third imaging element that receives at least normal light and outputs a third image signal, and a signal processing unit that performs depth-of-field extension processing to generate an extended-depth-of-field image using at least two of the first image signal, the second image signal, and the third image signal. The optical path length from a mount surface to the first imaging element is set to be longer than the optical path length from the mount surface to the second imaging element, and to be shorter than the optical path length from the mount surface to the third imaging element. The present technology can be applied to, e.g., a medical imaging system capable of capturing an EDOF image.

A vehicular interior rearview mirror assembly includes a mirror head adjustable about a mounting base. The mirror head accommodates a mirror reflective element. A light emitter is accommodated by the mirror head and is electrically operated to emit near infrared (NIR) light. A light sensor is accommodated by the mirror head and, when the light emitter emits NIR light, the light sensor detects NIR light that reflects off an object within the cabin and that passes through the mirror reflective element. Based on detection of NIR light by the light sensor, presence of a user's hand at or near the mirror reflective element is determined.

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 blood glucose detector (BGD) is placed on user's wrist, ear, nose, or other skin surface, at a NIR light infiltration location to detect arterial blood flow. Earlier-obtained baseline BG data is obtained via BGD and conventionally-obtained BG data. The user-wearable housing or body-mounted BGD system includes processor, memory, and NIR transmitter / sensor. BG baseline data is stored in memory. The NIR transmitter / sensor disposed on infiltration location. In detection, transmitter generates light in predetermined narrow band within NIR range 1350-1800 nm. Sensor detects reflected light from arterial BG as then-detected BG signal. Memory stores a subcutaneous interference factor (SIF) contributory value for NIR narrow band. Onboard processor (or smart phone APP) correlates the detected BG signal with the baseline as modified by the SIF value and generates displayable BG level to user via user-wearable housing or the user interface display on the smart phone as connected to body-mounted BGD system.

The invention relates to the technical field of ultraviolet photoelectric detectors, in particular to an MSM structure ultraviolet photoelectric detector based on p-Si / Ga2O3 / ZnO and a preparation method of the MSM structure ultraviolet photoelectric detector. Comprising a p-Si substrate; the Ga2O3 thin film layer is arranged on the p-Si substrate; the ZnO thin film layer is arranged on the Ga2O3 thin film layer; and the interdigital electrode is arranged on the ZnO thin film layer. The interdigital electrode is a Ti interdigital electrode, the width of the interdigital electrode is 50-100 m, the length of the interdigital electrode is 600-1000 m, and the electrode interval is 50-100 m; and the p-Si substrate is a double-surface polished boron-doped p-Si substrate. In the preparation process, magnetron sputtering and thermal evaporation deposition are adopted to prepare the photoelectric detector. The method has the advantages that manufacturing cost is reduced; the suppression ratio of UV / Vis-NIR light is improved, so that the device has higher spectral selectivity; the detection wavelength range is widened, and sensitive detection of UVA-UVC is realized.

An intraoral scanner includes a probe with a sensing face, patterned light sources that are coupled to the probe, un-patterned light sources coupled to the probe, near infrared (NIR) light sources couple to the probe, cameras coupled to the probe, and a processing device coupled to the probe. The processing device is configured to control an operation of the patterned light sources, the un-patterned light sources, and the NIR light sources.

A vehicular driver monitoring system includes a vehicular interior rearview mirror assembly having a mirror head that accommodates a variable reflectance mirror reflective element. A camera is accommodated by the mirror head and views through the variable reflectance mirror reflective element. A light emitter is accommodated by the mirror head and is electrically operable to emit near infrared (NIR) light that passes through the mirror reflective element. Responsive to detection of glare light at the variable reflectance mirror reflective element, the vehicular driver monitoring system electrically reduces the reflectance of the variable reflectance mirror reflective element. Responsive to determining presence of a passenger, the vehicular driver monitoring system limits electrical reduction of the reflectance of the variable reflectance mirror reflective element so that the variable reflectance mirror reflective element provides at least a first minimum threshold transmission level of NIR light passing through the variable reflectance mirror reflective element.

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.

The invention discloses a fused ring tin porphyrin photosensitizer with high singlet oxygen sensitization efficiency and photothermal effect, and relates to the technical field of biological medicine. The invention provides a structural general formula and a preparation method of a fused ring tin porphyrin photosensitizer. According to the invention, the photosensitizer is endowed with strong absorption capacity in an NIR region through an isoquinoline fused ring on the periphery of porphyrin, < 1 > O2 sensitization activity and photothermal effect of the photosensitizer under light excitation are promoted through metal tin coordination in a parent nucleus, and an efficient photodynamic / photothermal synergistic killing effect on 4T1 cells of a mouse breast cancer cell line under NIR light irradiation is realized; the problems of poor light stability, reduced photosensitive activity and the like in the prior art are effectively solved.

A head-mounted extended reality (XR) display device includes a rigid mounting element coupled to a frame. The XR display device further includes right-side and left-side visible light cameras coupled to the rigid mounting element, right-side and left-side near-infrared (NIR) cameras coupled to the rigid mounting element, and an NIR light-emitting diode (LED) configured to illuminate a region within a field of view of the NIR cameras. The visible light cameras are configured to capture stereoscopic visible light images within a field of view of the user when the user is wearing the frame, and the NIR cameras are configured to capture stereoscopic NIR images within the field of view of the user when the user is wearing the frame.

Reperfusion injury is limited during endovascular therapies (e.g., revascularization and / or reperfusion of end organ tissues) by conditioning the tissues against reperfusion injury using an optical fiber catheter to deliver far red and near infrared (R / NIR) light to the tissues. The light may be multiple wavelength or single wavelength light, and may have one or more wavelengths selected from the range of 510 to 830 nm. The R / NIR light may be delivered concurrently with the endovascular therapy, or in other instances may be delivered before or after a particular therapy.

A lighting device and a method of manufacturing a lighting device that improve the efficiency of converting light output by a light emitting diode (LED) into near-infrared light (NIR). To improve efficiency, light emitted by the LED passes through a first phosphor layer that emits NIR light, and then passes through a second phosphor layer that absorbs light that is not absorbed by the first layer to produce additional light. In some examples, the additional light is in the visible spectrum.

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.

A class of near-infrared (NIR) II fluorescent dyes, their preparation methods, and their anti-tumor applications belong to the field of fine chemical technology. These dyes have a primary absorption band above 800 nanometers, with fluorescence emission peaks covering both NIR I and II, and exhibit a large Stokes shift (up to 160 nanometers in DMF). These dyes can be used for NIR II optical imaging, avoiding defects such as dye self-absorption, autofluorescence, and fluorescence scattering. When excited by NIR light (808 nm), these dyes generate sufficient reactive oxygen species and heat, enabling them to be used in NIR II fluorescence-guided optical therapy. Furthermore, these dyes can target the specific phospholipid cardiolipin in the inner mitochondrial membrane of cells, interfering with the cardiolipin domain, affecting the activity of cardiolipin-binding proteins, and promoting cell apoptosis. These dyes can be used as novel anti-tumor chemotherapy drugs for cancer treatment.

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 present invention discloses a condensed ring tin porphyrin photosensitizer with high singlet oxygen sensitization efficiency and photothermal effect, which relates to the field of biomedicine technology. The present invention provides a structural formula and preparation method of the condensed ring tin porphyrin photosensitizer. The present invention gives the photosensitizer a strong absorption ability in the NIR region through the isoquinoline condensed ring on the periphery of the porphyrin, and promotes the photosensitizer to absorb light under light excitation through the coordination of metal tin in the mother core. 1 O2 sensitization activity and photothermal effect achieved efficient photodynamic / photothermal synergistic killing of mouse breast cancer cell line 4T1 cells under NIR light irradiation, effectively solving the problems of poor photostability and reduced photosensitivity in existing technologies.

A method for detecting at least one property of a plant product, the method including: directing source light including ultraviolet (UV) light at UV wavelengths and polarized visible and / or near-infrared (VIS / NIR) light at VIS / NIR wavelengths onto a region of the plant product; blocking the polarized VIS / NIR light of the source light, and blocking polarized specular reflection from the region of the plant product, from being transmitted to a visible and / or near-infrared (VIS / NIR) spectrometer; and transmitting a portion of emitted light caused by fluorescence and / or diffuse reflection from the region of the plant product to the visible and / or near-infrared (VIS / NIR) spectrometer.

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).

Systems and methods for monitoring and controlling surgical site temperature based on fluid near-infra red (NIR) light absorption spectra at the surgical site are disclosed. An exemplary system comprises an endoscopic surgical device operably coupled to an energy source for providing energy to an anatomical target at a fluid surgical site, a lighting system including an infrared light source to emit an NIR light to the anatomical target, and a controller circuit to determine fluid NIR light absorption spectra and estimate a fluid temperature using the NIR light absorption spectra. Based on the estimated fluid temperature, the controller circuit can adjust an operating parameter of the endoscopic surgical system to achieve or maintain a desired temperature at the fluid surgical environment during the procedure.

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.

A device for maintaining an optical path of an optical imaging system free of fog includes an elongated member having a distal end and a proximal end, a near-infrared (NIR) light-absorbing optical window disposed at the distal end, and an optical system disposed along the optical path. The device also includes a coupling module coupled to the elongated member at the proximal end and configured to transmit near-infrared light to the NIR light-absorbing optical window along the optical path and receive a light beam from an area of interest along the optical path.

An optical lens device includes a lens body, an optical filter and an optical absorbance portion. The optical absorbance portion has a violet & UV absorbent region and a red & NIR absorbent region between which forms a whole-visible-spectrum transmittance region. The whole-visible-spectrum transmittance region is located between a first transmittance wavelength at 405 nm and a second transmittance wavelength at 710 nm. The violet & UV absorbent region is provided to absorb a violet light and a UV light of beams while the red & NIR absorbent region is provided to absorb a red light and a NIR light of beams.

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.

A lighting module for connecting to a luminaire. The lighting module comprises one or more light sources configured to output a light pulse in a predetermined wavelength band and a controller for driving the one or more light sources to output the light pulse. When connected to the luminaire, the lighting module reduces the intensity of light output by the luminaire during the light pulse from a first intensity to a second, lower intensity.

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.