398 results about "Near infrared luminescence" patented technology

A system mountable in a motor vehicle. The system includes a camera and a processor configured to receive image data from the camera. The camera includes a rolling shutter configured to capture the image data during a frame period and to scan and to read the image data into multiple image frames. A near infra-red illuminator may be configured to provide a near infra-red illumination cone in the field of view of the camera. The near infrared illumination oscillates with an illumination period. A synchronization mechanism may be configured to synchronize the illumination period to the frame period of the rolling shutter. The frame period may be selected so that the synchronization mechanism provides a spatial profile of the near infra-red illumination cone which may be substantially aligned vertically to a specific region, e.g. near the center of the image frame.

The present invention relates, in general, to the field of securing, prevention of fraud, or theft of products such as pharmaceuticals, cigarettes, alcohol and other high value often counterfeited products. In particular the invention teaches an apparatus and method to encode packaging of the protected goods using a near infrared luminescing compound and detecting the compound through recognition of a characteristic spectral signature of its emission.

The invention belongs to the technical fields of preparation and application of a bioluminescent marker, and particularly relates to a strong near infrared up-conversion luminous bioluminescent nanoparticle of a Yb and Ho ion di-sensitized Tm ion and an application thereof. Through energy transmission among Yb / Ho / Tm in the up-conversion luminous material, higher-efficiency 800-nanometer near infrared up-conversion light transmission can be obtained under the induction of near infrared light of 900-1,064 nanometers. The nanoparticle has the advantages that: excited light and emitted light at positioned at a range of 750-1,000 nanometers of an optical window of a biological tissue, and enhanced near infrared up-conversion light can be emitted at a position of 800 nanometers. The near infrared light and visible light in the range have higher penetrating power in organisms, and the functions of fluorescence detection, tracing and the like of higher-layer biological tissues in organisms can be realized. The near infrared luminous strength of the obtained material close to the position of 800 nanometers is enhanced greatly, and the material is easy to detect, and has a simple preparation process.

The invention provides an iridium complex used as a near-infrared luminous material and OLEDs (organic light-emitting diodes) comprising the iridium complex. The general structural formula of the iridium complex is LnIrX(3-n) or [LnIrX(3-n)]<+>Z<->, wherein Ir represents a central atom of the iridium complex, both L and X are ligands of the iridium complex, Z<-> represents an anion, n is equal to 1, 2 or 3, and L is selected from an L1 ligand, an L2 ligand or an L3 ligand with the general formula represented in the specification.

The invention discloses application of near-infrared light emitting pixels in the structure of an OLED screen mobile terminal. The mobile terminal is a mobile phone screen which is composed of a screen substrate, an anode, a grid electrode, a TFT driving circuit, a driving voltage cathode line, a display unit, a cathode, a touch circuit, polarizers and a glass screen; the display unit comprises anear-infrared organic light emitting diode which is composed of a light emitting substrate, an anode, a hole transport layer, a light emitting layer, a hole blocking layer, an electron transport layerand a cathode, wherein the light emitting layer is a near-infrared organic light emitting layer which is composed of multiple pixel points, and all the pixel points are controlled by the TFT circuit;and the display unit further comprises a red or green or blue or white light emitting diode and is formed by combining and permutating pixel points of the near-infrared light emitting diode and pixelpoints of the red or green or blue or white light emitting diode on the same light emitting substrate. According to application of the near-infrared organic material in the mobile terminal, the defects of inorganic semiconductor near-infrared device preparation are effectively overcome, the application range is wide, and a new function can be developed.

The invention provides a system and a method for orthopedic surgical instrument navigation. The system comprises: at least two near-infrared cameras, a calculation module, a position determining module, and a display module. The at least two near-infrared cameras are used to respectively acquire images of near-infrared illuminating marked points on a surgical instrument and dynamic reference in asurgery process. The surgical instrument and the dynamic reference are respectively provided with at least three near-infrared illuminating marked points. The calculation module is used to calculate to obtain three-dimensional position coordinates of the near-infrared illuminating marked points based on a binocular vision principle according to the images of the near-infrared illuminating marked points. The position determining module is used to determine positions of the surgical instrument and the dynamic reference according to the obtained three-dimensional position coordinates of the near-infrared illuminating marked points. The display module displays positions of the surgical instrument and the dynamic reference, so as to perform surgery tracking. The system and the method can accurately position intraoperative positions of surgical instrument, provide accurate and reliable navigation for orthopedic surgeries, and can effectively improve surgery success rate. The system is simplein operation, and can be applied on any infected parts of bones, and is high in applicability.

The invention discloses an optical fiber type field soil organic matter content fast detector, comprising an optical path module and a control module connected with the optical path module, wherein the optical path module comprises a photoelectric detector, an optical fiber, a probe, a near-infrared light emitting diode and a drive circuit, the optical fiber comprises a light input end, a reflected light measurement end and a soil detection end, the light input end is connected with the photoelectric detector, the reflected light measurement end is connected with the photoelectric detector, the soil detection end is connected with the probe, the control module comprises a signal amplification unit, a A / D conversion unit, a control unit, a display unit and a memory unit, the signal amplification unit is connected with the photoelectric diode and the A / D conversion unit, the control unit is connected with the A / D conversion unit, the display unit and the memory unit. The invention has the advantages that the optical fiber type field soil organic matter content fast detector avoids the natural limits such as weather, is portable, and can real-timely, quickly and accurately measure soil organic matter content and quickly store mass data.

The invention provides a near infrared LED and a production method thereof, and belongs to the technical field of photoelectron. The method comprises the steps of forming an epitaxial wafer on a temporary substrate; manufacturing a transparent conductive layer on a current expansion layer of the epitaxial wafer; annealing to enable the transmission rate and square resistance of the transparent conductive layer; enabling the transparent conductive layer to be opposite to a transparent permanent substrate; integrally adhering the epitaxial wafer and the transparent permanent substrate through adhesive; removing the temporary substrate, a N-GaAs buffer layer and a N-GaInP stop layer; exposing an N-GaAs ohm contact layer; corroding to form a pattern; roughing; manufacturing a first electrode on the patterned N-GaAs area; annealing to electrically connect the first electrode and the N-GaAs. With the adoption of the method, the transmission rate of the near infrared wave section is high, and the light outgoing efficiency is further increased; the parallel structures of the electrodes at the P side and the N side can be achieved; the transparent conductive layer is also an anti-reflection film which increases the light picking efficiency.

The invention relates to a preparation method and application for a multifunctional nanometer diagnosis and treatment agent integrating light emitting / CT / MR multi-mode imaging and tumor hyperthermia. The multifunctional nanometer diagnosis and treatment agent comprises up-conversion luminescence nano-particles, a silicon dioxide layer, near-infrared photothermal conversion agent particles and sulfhydryl functionalization polyethylene glycol, wherein the up-conversion luminescence nano-particles have the performance of near-infrared light emitting / CT / MR three-mode imaging; the surfaces of the up-conversion luminescence nano-particles are wrapped with the silicon dioxide layer; the near-infrared photothermal conversion agent particles are in electrostatic adsorption on the surface of the silicon dioxide layer; the sulfhydryl functionalization polyethylene glycol is grafted onto the surfaces of the near-infrared photothermal conversion agent particles. The multifunctional nanometer diagnosis and treatment agent provided by the invention can integrate light emitting / CT / MR multi-mode imaging and the tumor hyperthermia into a whole, and through the stimulation of a single wave band, the light emitting imaging and tumor hyperthermia can be achieved simultaneously.

The invention provides an inductive control display panel and an inductive control display device, and relates to the technical field of display. The inductive control display panel and the inductivecontrol display device have the advantages that a plurality of pixel regions are arranged in display zones, each pixel region comprises a first pixel and second pixels, the first pixels comprise near-infrared luminescence sub-pixels, the second pixels comprise near-infrared receiving sub-pixels, near-infrared light can be emitted by the near-infrared luminescence sub-pixels, near-infrared light reflected from external objects can be received by the near-infrared receiving sub-pixels when the external objects approach the inductive control display panel, and accordingly the locations of the external objects can be detected; near-infrared emitters are integrated in the first pixels and are used as the near-infrared luminescence sub-pixels, near-infrared receivers are integrated in the secondpixels and are used as the near-infrared receiving sub-pixels, the locations and movement trajectories of the external objects can be detected on the basis of the near-infrared luminescence sub-pixels and the near-infrared receiving sub-pixels, and accordingly the inductive control display panel and the inductive control display device can have gesture sensing and eyeball control inductive control interaction functions and the like without occupying extra spaces.

The invention discloses an OLED unit and a manufacturing method thereof, a display panel and a display device, and belongs to the technical field of display. The OLED unit includes a first electrode layer disposed on a substrate base plate, a near-infrared emitting layer, a barrier layer, a red light emitting layer and a second electrode layer. The near-infrared emitting layer is disposed on the side, away from substrate base plate, of the first electrode layer and used for emitting near-infrared light; the barrier layer is disposed on the side, away from the substrate base plate, of the near-infrared emitting layer and made of a conductive material; the red light emitting layer is disposed on the side, away from the substrate base plate, of the barrier layer and used for emitting red light; the second electrode layer is disposed on the side, away from the substrate base plate, of the red light emitting layer, and the polarity of the second electrode layer is opposite to that of the first electrode layer. The manufacturing process of the display panel is simplified, and the manufacturing cost is reduced.

The invention discloses a near-infrared fluorescent powder with broadband emission characteristics, and a preparation method and applications thereof, and belongs to the technical field of luminescentmaterial. The near-infrared fluorescent powder with broadband emission characteristics is suitable for near ultraviolet light and blue light chip excitation. The general chemical formula of the near-infrared fluorescent powder is Ca<2+x>Ln<1-x-y>Zr<2-x>Al<3>O<12>:xCr<3+>, yCe<3+>, and Cr<3+> is taken as a luminescence center, wherein Ln is used for representing one or a plurality of ions selectedfrom Y<3+>, Lu<3+>, and Gd<3+>, x and y are used for representing molar fractions, 0<x<=0.15, and 0<=y<=0.1. The near-infrared fluorescent powder can be taken as a light conversion material of near ultraviolet light LED chips or blue light LED chips, can be used for preparation of broadband near-infrared light sources, and is capable of satisfying requirements of blood oxygen detection or coherence tomography on infrared light sources with broadband emission characteristics.

The invention discloses a plant growth information obtaining device based on near infrared spectra, which is characterized by the following: the light source of near-infrared luminescent diode is fixed in the detecting platform in connection with the pivoted arm of upper detector; the sealing rubber is fixed on the detecting platform; the optical lens and optical fiber are fixed in the rack with two receiving faces opposing; the rack connects the pivoted arm of lower detector; the pivoted arm of upper and lower detector hinges; the exit end of optical fiber connects the input end of photoelectric sensor, which is fixed in the detecting controller; the output end of photoelectric sensor connects the input end of amplifier; the device measures the growth information of plant leaflet surface, which marks the model to correct the growth information to reduce the environmental influence; the detecting darkroom is composed of detector and sealing rubber to improve the detecting progress and speed without the interference of external light source, which is fit for gathering the on-site plant growth information.

The invention especially relates to a near-infrared luminescent material which can emit wideband near-infrared light under the effective excitation of ultraviolet-visible light and further discloses alight-emitting device prepared from the material, belonging to the technical field of luminescent materials. The near-infrared luminescent material can efficiently emit near-infrared light with a peak wavelength of 900 to 1100 nm under the condition of an effective excitation wavelength of 250 to 750 nm. The luminescent material has the characteristics of a wide excitation emission wavelength range, high luminescence efficiency, uniformity, no impurity phase, stability, simple preparation, etc. The invention also provides the light-emitting device prepared from the near-infrared luminescent material of the invention. The luminescent material and the light-emitting device of the invention solve the problems of poor stability, low luminescence efficiency, high preparation cost and the likeof conventional near-infrared luminescent materials and light-emitting devices, and have good application prospects.

The invention relates to a preparation method for quaternary ZnCuInS3 with the high fluorescence, which comprises the following steps of: firstly, preparing precursor solution of Zn<2+>, Cu<+> and In<3+> cations; under the protection of argon, quickly heating the precursor solution to 180-240DEG C from the room temperature; quickly injecting S precursor solution to react for 15-30 minutes; removing a heat source, and naturally cooling to the room temperature; and centrifuging and purifying to obtain the quaternary ZnCuInS3 quantum dot. The obtained quaternary ZnCuInS3 quantum dot has good fluorescence, the fluorescence emission peak position of the quaternary ZnCuInS3 quantum dot is within the range of 645-825nm, and the fluorescence quantum dot productivity is 55-64%. According to the preparation method disclosed by the invention, cheap and nontoxic precursor material is adopted and is synthesized into the quaternary ZnCuInS3 quantum dot with the high fluorescence with a simple thermal injection method, wherein the wavelength of the quaternary ZnCuInS3 quantum dot is 825nm, the quaternary ZnCuInS3 quantum dot can carry out near-infrared luminescence, and the fluorescence quantum dot productivity of the quaternary ZnCuInS3 quantum dot is 55-64%. A foundation is laid for applying the quantum dot to living body bioimaging.

The invention discloses an epitaxial structure of a near-infrared light emitting diode. A first type current spreading layer, a first type limiting layer, an active layer, a second type limiting layer and a second type current spreading layer are grown on a substrate layer in sequence; the second type current spreading layer consists of a first constituent and a second constituent; a contact interface with a diffuse reflection effect is formed between the first constituent and the second constituent. The invention also discloses an epitaxial growth process of the near-infrared light emitting diode. The epitaxial structure of the current spreading layer with the diffuse reflection effect is formed by using the epitaxial growth process, so that the external quantum efficiency is obviously improved, and the near-infrared light emitting diode can reach higher power.

The invention discloses a calibration method of a near-infrared camera, which comprises the following steps of: (1) setting a calibration point in a corner of an array luminous area to be a starting calibration point by using the calibration point of a calibration plate as an array near-infrared luminous point; (2) placing the calibration plate in an effective field range of the near-infrared camera, and shooting a series of images of the calibration plate at different positions; (3) sequentially clicking the calibration points in four corners of the array luminous area according to the same direction starting from the starting calibration point on each image in a mode of mouse point-taking, extracting sub-pixel values of the four points and further extracting a sub-pixel coordinate value of each luminous point according to a position area where the luminous point on the image is located; and (4) determining a one-to-one correspondence relationship between the sub-pixel coordinate value of each luminous point and a three-dimensional coordinate point of the near-infrared calibration plate and solving internal and external parameters of the infrared camera. The calibration method can be used for high-precision calibration of the near-infrared camera, and the requirement on the calibration plate is relatively low.

There is provided a low-vision aid device, including a scene-display imager producing a signal pattern composed of an array of pixels, a near IR illuminator for illuminating the retina of the eye with radiation for eye tracking, to be reflected from the retina of the eye, an eye-retina tracking imager, and an image transceiver device capable of providing both functions of eye imaging as well as image display by selectively rotating the polarization of individual pixels of the array of pixels of the signal pattern, to allow the transference of selected portions of the signal pattern to reach the retina of the eye.

Belonging to the technical field of luminescent materials, the invention in particular relates to a broad-band near-infrared emission luminescent substance, in particular to a material capable of generating red light and near-infrared emission in a range of 700nm-1600nm under the excitation of ultraviolet, purple light, blue light and red light, and further discloses a preparation method of the material and a luminescent device containing the luminescent material. The broad-band near-infrared emission luminescent substance includes an inorganic compound with a molecular formula of AaDbMcEdOe:xCr. The luminescent substance has a strictly occupied ordered structure, and the material is a single substance, adopts Cr as the optical active center, can well absorb ultraviolet light, blue light and red light, and under the excitation of ultraviolet or purple light or blue light, can realize broad-band red light and near-infrared emission in the range of 700nm-1600nm, and has shorter fluorescence lifetime.

The present invention discloses monodisperse near infrared silver telluride quantum dots and a preparation method thereof. The preparation method comprises: uniformly mixing a tellurium sodium hydride aqueous solution and an organic solution of a silver source, adding a surface ligand, carrying out a hydrothermal reaction, and carrying out surface functionalization to obtain the near infrared silver telluride quantum dots having the monodispersity in the polar solvent. According to the present invention, the near infrared silver telluride quantum dots are prepared by using the solvothermal-assisted phase interface synthesis method, wherein the reaction conditions are mild and controllable, the operation is simple, the repeatability is good, the used reagents are cheap and easy to obtain, the obtained near infrared silver telluride quantum dots have characteristics of uniform particle size, near-infrared luminescence property and high quantum yield, and by adjusting the particle size, the wavelength can be adjusted within 1300-1350 nm. In addition, the method of the present invention can be used for preparation of other telluride nanometer materials, easily amplify the reaction, and is suitable for large-scale industrial production.

The invention belongs to the technical field of luminous materials, and particularly relates to a broad-band near-infrared-emission luminous material, in particular to a material capable of emitting red rays and near-infrared rays within 650nm to 1,600nm under excitation of ultraviolet, violet, blue and red rays, and further discloses a preparation method of the luminous material and a luminous device comprising the luminous material. The broad-band near-infrared-emission luminous material is prepared from an inorganic compound with the molecular formula of AaDbMcOe:xCr, has a strictly occupied ordered structure, and has a broader excitation wavelength (250-700 nm); the material is a single substance which takes Cr as an optically active center, and can well absorb the ultraviolet rays, the blue rays and the red rays; under the excitation of the ultraviolet rays, the violet rays or the blue rays, the broad-band red rays and the near-infrared rays can be emitted within the range of 650nm to 1,600 nm.

A near infrared illuminator can facilitate the adjustment of an optical axis thereof with favorable accuracy. The near infrared illuminator can include: a light source configured to emit near infrared rays; and a projector lens configured to project the near infrared rays emitted from the light source forward to form a predetermined light distribution pattern in front thereof. The projector lens can include a light distribution control section configured to project part of the near infrared rays emitted from the light source forward to form the predetermined light distribution pattern, and a marker forming section configured to project part of the near infrared rays emitted from the light source forward to form an alignment marker for positioning the light distribution pattern at a predetermined position beside the light distribution pattern.

The invention discloses a domestic near-infrared detection device for food quality, which comprises a near-infrared light emitting source, a light filter, a Fresnel lens, a sample tank, a detector, a lock-in amplifier and a microprocessor. Near infrared rays emitted from the near-infrared light emitting source are converted into square-wave signals after passing through the light filter, the Fresnel lens, the sample tank, the detector and the lock-in amplifier in sequence; the square-wave signals are inputted into the microprocessor; and the microprocessor processes the received square-wave signals by utilizing fuzzy iterative self-organization data analysis and displays the signals. The domestic near-infrared detection device is simple in structure, convenient to operate and suitable to use domestically.

The invention discloses a near infrared calibration board design method, comprising the following steps: (1) fixing paster near infrared luminous tubes on a rigid slab according to an array distribution to make a calibration board; (2) utilizing a calibrated common camera measurement system, moving the calibration board in the effective field of view of the measurement system, collecting a series of left and right images of near infrared luminous points, extracting the sub-pixel coordinates of all the luminous points in the images, carrying out a coordinate reconstruction towards all the luminous points and rotating and translating a plurality of groups of luminous point three dimensional coordinates to finally obtain the near infrared calibration board. The average error is within 0.04mm. The invention can be used for an active near infrared calibration board having the advantages of high precision, good uniformity, convenient use and strong capability of anti-environment illumination change.

The invention relates to a novel metal complex and application thereof in an organic luminescent device. The structural general formula of the metal iridium complex for near infrared luminescence is LnIrX(3-n), wherein X is selected from acetylacetone, dibenzoylmethane, dipivaloylmethane or picolinic acid; n is selected from 1, 2 or 3; L is selected from the following structural formula L1, L2 or L3; R1-R9 are independently selected from H, C1-10 alkyl, C1-10 alkoxy, C1-10 alkylamino, carbazolyl, F, trifluoromethyl and C5-18 aryl respectively; and Ar represents C5-18 aryl and C5-18 heterocyclic aryl. The metal complex has the advantages of short luminescence life and high luminescence efficiency; and an organic luminescent device prepared from the luminescent material has the characteristic of high luminescence efficiency under high current density. The structural formula L1, the structural formula L2 and the structural formula L3 are shown in the specification.

The invention discloses a preparation method and the near-infrared light-emitting property of a dual-core Ru complex, as well as application of a pH sensor. The application comprises the following steps: calculating light-emitting quantum efficiencies at different pH values by measuring ultraviolet visible absorption spectrums and ultraviolet visible emission spectrums of the dual-core Ru complex at the pH values, and drawing a standard working curve by taking the pH values as abscissa values and the light-emitting quantum efficiencies as ordinate values, so as to detect the pH of an unknown water sample. The application is high in sensitivity and easy to operate.

The invention relates to a fluoride nanometer crystal for wideband optical amplification and a preparation method and application of the fluoride nanometer crystal in the technical field of materials science. According to the fluoride nanometer crystal for the wideband optical amplification, NaYF4: Yb, Re@NaYF4 or NaGdF4: Yb, Re@NaGdF4 nanometer crystal is in a monodisperse nucleocapsid structure. Laser of 980nm is used for exciting the monodisperse nanocrystal, and multi-band near infrared luminescence is produced; the peak position of a luminous peak is freely mixed with the fluoride nanometer crystals at different wave bands, so that the near infrared luminescence using a rare earth ion as a luminescence center is formed, and the effective bandwidth is enlarged. For the nanometer crystal in the monodisperse nucleocapsid structure with the near infrared luminescence is in a hexagonal phase structure, the luminescence center is free from the influence of high energy groups, the lower conversion luminescence efficiency and the luminous intensity are effectively improved, and the fluoride nanometer crystal is extremely suitable for the wideband optical amplification.

The invention discloses a kind of rare earth doped near-infrared luminescent glass and a preparation method thereof. The luminescent glass is composed of the following components in mole ratio: 45 parts of SiO2, 10 parts of Al2O3, 15 parts of Na2O, 30 parts of ZnF2, and 0.5 part of RE2O3 or 45 parts of SiO2, a parts of Al2O3, b parts of MO, 30 parts of MF2, and 0.5 part of RE2O3, wherein a refers to the mole fraction of Al2O3, b refers to the mole fraction of MO, a+b=25, a is greater than or equal to 6 and less than or equal to 15, b is greater than or equal to 10 and less than or equal to 19, MO refers to alkaline earth metal oxide, MF2 refers to alkaline earth metal fluoride, and RE2O3 refers to rare earth oxide. The glass disclosed by the invention is prepared by using a molten cooling method, and selected raw materials are non-toxic, environment-friendly, and low in cost; the rare earth doped glass can emit near-infrared light at multiple wave bands, and in the process of emitting, two-step even three-step continuous near-infrared radiation exists; the luminescent quantum efficiency is expected to be greater than 100%. The glass can be used for preparing near infrared optical fiber materials.

The present invention relates to a medical device for treating prostate diseases by using near-infrared LEDs (light emitting diodes), and more particularly to a medical device for treating prostate diseases in which a probe having installed therein near-infrared LEDs and a vibrator is constructed to be inserted into the rectum to radiate near-infrared rays to the prostate from a position closest to the prostate and render a direct physical massage function to the prostate, thereby effectively treating prostate-related diseases. Also, the present invention relates to a pad mechanism supplementing the probe mechanism, being brought into close contact with the perineal region to radiate red visible rays and transmit vibration to the organs around the prostate thereby curing the natures of diseases in the organs around the prostate, and a disposable probe condom used in a state in which it is worn over the probe mechanism.