171 results about "Infrared wavelength" patented technology

The invention provides a multispectral camouflage infrared wavelength selection thin film and a preparation method thereof, and belongs to the technical field of spectral thermal radiation management, and the preparation method comprises the following steps: screening a material with directional emission in a wave band of 8-14 microns as a directional emission layer material according to an optical constant of a thin film material in the wave band of 3-25 microns; a directional emission layer material is combined with a lossless dielectric material and a metal material to construct a cascaded Fabry-Perot resonant cavity structure; according to the arrangement sequence and the optical constant of each layer of film, taking the thickness of each layer of film as an optimization variable, and utilizing an optimization algorithm taking a quality factor function as a judgment basis to carry out iterative calculation to obtain the optimal thickness of each layer of film; and according to the structure of the multi-layer composite film and the optimal thickness of each layer of film, depositing each layer of film material on the substrate by adopting a magnetron sputtering process to prepare the multi-spectral camouflage infrared wavelength selection film. According to the scheme, the optimization efficiency of the film layer is improved, and efficient thermal management is realized while the multispectral camouflage performance is maintained.

The invention discloses an infrared multi-channel gas detection method and a gas sensor, and the gas detection method mainly comprises the following steps: calibrating the infrared multi-channel gas sensor by using first to-be-detected gas, second to-be-detected gas and third to-be-detected gas; obtaining a fitting function of the concentration of each to-be-measured gas and the ratio absorptivity of each to-be-measured gas in the corresponding measurement channel and the reference channel, and a fitting function of the ratio absorptivity of each to-be-measured gas in the corresponding measurement channel and the reference channel and the interference absorptivity of each to-be-measured gas in other measurement channels; and performing interference correction on the to-be-measured gas of each measurement channel to obtain the real concentration of each to-be-measured gas. The infrared wavelength of the multi-component gas to be detected is designed through the characteristic that the black body light source can radiate a wider wavelength range, so that the cross interference among the components is reduced to the minimum, the interference among the component gases is further eliminated through an anti-interference detection method, and the detection precision of the component gas to be detected is improved.

The invention discloses an all-series recovery process for waste lithium ion batteries, which belongs to the field of lithium battery regeneration and comprises the main process steps of pretreatment of the waste lithium ion batteries, electrolyte recovery through microwave baking, obtaining of positive plates and negative plates through eddy current separation and separation of positive and negative black powder and metal foil through infrared irradiation. Wherein the electrolyte is recovered through microwave baking, so that the electrolyte can be quickly vaporized and then condensed and recovered under the action of microwaves by utilizing the strong polarity of the electrolyte, and therefore, the electrolyte can be efficiently separated, the removal effect is more thorough, and the problem of electrolyte pollution cannot be generated in the process. According to the infrared irradiation separation process, the absorption capacity of different adhesives to different infrared wavelengths can be utilized, and the molecular chains of the adhesives are broken and the positive and negative electrode powder and the metal foil can be automatically stripped by adjusting the irradiation infrared band and generating resonance vibration, so that the residues of the adhesives are greatly reduced; the recovery rate of the waste lithium ion battery and the purity of the recovered material are improved.

A head-mounted device may have left-eye and right-eye optical modules that may have a display that creates an image and a corresponding lens that provides the image to an eye box for viewing by a user. The optical modules each include a lens barrel to which the display and lens of that optical module are mounted and a head-mounted optical module gaze tracking system. The gaze tracking system may have light-emitting devices such as light-emitting diodes that emit light at a given near infrared wavelength and may operate through the lens and a removable supplemental lens. The supplemental lens may be a prescription lens and may have an antireflection portion that reduces the reflectance of the lens across visible and near infrared wavelengths. The antireflection portion may be a thin-film interference coating or a moth-eye portion. In this way, the gaze tracking system may operate through the removable supplemental lens.

Camouflage coating systems, apparatuses, and methods described herein may include a coating deposited and bonded to a region of an external surface of an object to be camouflaged. The coating may include a plurality of stacked material arrangements deposited and bonded sequentially onto the region of the external surface and arranged to define a laterally distributed plurality of independent camouflage profiles. The coating may be configured to adjust coating emissivity at visual and IR wavelengths and to block or adjust infrared (IR) emitted by the object, thereby concealing the region of the external surface of the object from detection by a detection method in the visual, infrared, and electromagnetic regimes.

This infrared radiation detector comprises: – a cryostat equipped with a cold finger, suitable for heat exchange with a cold source, and a window transparent to the infrared radiation to be detected; – a cold plate, mechanically fixed and in heat exchange with the cold finger; – a detection block comprising at least one detection matrix sensitive to the range of infrared wavelengths to be detected, and in heat exchange directly or indirectly with the cold plate; – a cold screen mechanically fixed and in heat exchange with the cold plate and suitable for limiting parasitic radiation, the cold screen being equipped with at least one diaphragm or baffle (9), oriented radially with respect to the general orientation of the detector, and equipped with an opening suitable for allowing the transit of the optical path resulting from the incident radiation.The free edge (13) of said at least one diaphragm or baffle (9) is structured so as to define non-linear patterns (14). Figure for the abbreviation: Fig 6.

The present disclosure relates to an intraoral scanning system configured to determine a three-dimensional surface model and a plurality of focus images. The intraoral scanning system comprises: a projector unit configured to emit light onto a dental object, wherein the emitted light comprises an infrared wavelength and a structured light, the structured light comprising a first visible wavelength; a first image sensor unit comprising: a first image sensor configured to acquire first reflected light from the dental object, wherein the first reflected light comprises the infrared wavelength, and wherein the first image sensor comprises a pixel array, a microlens array arranged in front of the pixel array and configured to transmit the first reflected light to the pixel array, wherein one or more microlenses of the microlens array direct the first reflected light to one or more pixels of the pixel array; a second image sensor unit comprising: a second image sensor configured to acquire second reflected light from the dental object, wherein the second reflected light comprises the structured light; a processor unit configured to: determine three-dimensional (3D) data of the dental object based on the second reflected light, determine a three-dimensional (3D) surface model of the dental object by merging the 3D data, and determine a plurality of focus images at different focus depths into the dental object by selecting a set of pixels from the pixel array associated with each microlens of the microlens array, and wherein the processor unit is configured to align a position of each focus image of the plurality of focus images to a position in the 3D surface model based on the 3D data.

An optically diffusive film includes an optical substrate layer with opposing first and second major surfaces; and an optical layer disposed on the second major surface of the optical substrate layer and including a structured major surface having a plurality of spaced apart elongated structures elongated along a same first direction and arranged at a substantially uniform density, each elongated structure including a peak such that, in a plane of a cross-section of the elongated structure that is parallel to the first direction and comprises the peak, the elongated structure has a substantially flat top region; wherein for substantially normally incident light and a visible wavelength range and an infrared wavelength range, the optical substrate layer has an average total transmittance or reflectance of greater than about 60% in the visible wavelength range and an average specular transmittance of greater than about 60% in the infrared wavelength range.

A floor type detection system for a floor cleaner, wherein the floor type detection system comprises one or more light emitters, a light sensor configured to detect light having infrared wavelengths i

An optical filter has an average optical transmission of greater than about 50% in a visible wavelength range (e.g., wavelengths from about 420 nm to about 550 nm) and an optical density greater than about 1.5 in an infrared wavelength range (e.g., wavelengths from about 650 nm to about 800 nm). The optical filter can have a sharp band edge between the visible and infrared ranges. For example, a change in percent transmission of at least about 30% can occur over a wavelength range not greater than about 10 nm wide and / or the slope of the band edge can be greater than about 5% / nm. An optical system includes the optical filter disposed between an emissive display and an optical sensor.

The invention relates to a radio identification unit (1) with a radio identification receiver (2) and a proximity detector (3) connected to the radio identification receiver (2), wherein the proximity detector (3) has a pyroelectric PIR sensor (25) for detecting the approach of a person in the vicinity of the radio identification receiver (2) and is configured to activate the radio identification receiver (2) when a person's approach to the proximity detector (3) is detected. The PIR sensor (25) has two horizontally adjacent sensor elements (11a, 11b and / or 11c, 11d) with a sensor surface sensitive to infrared waves, which is covered by a cover (10) that is at least partially transparent to infrared wavelengths, wherein a vertical bridge (13) is located between the pair of sensor elements (11a, 11b and / or 11c, 11d).11a, 11d) is arranged in the space between the cover and a platform (12) of the PIR sensor (25) which supports the sensor elements (11a, 11b, 11c, 11d).

A vehicle window glass with which it is possible to realize a vehicle space that is favorable to the skin of the occupant is provided. In a vehicle window glass according to the present disclosure, an average transmittance A in a near-infrared wavelength band from 780 nm to 2,500 nm is 65% or less, a value B, which is a percentage (b1 / b2×100) of bl with respect to b2, is 50% or more, where b1 is an average transmittance in a visible-light long wavelength band of 650 nm to 750 nm, and b2 is an average transmittance in a visible-light total wavelength band of 380 nm to 780 nm, and the transmittance has a minimum value in the wavelength band of 500 nm to 600 nm.

To solve the problem that in a low-reflection treatment, light absorption in a black porous layer is weakened in a region of wavelength of 700nm or more, so that reflectivity tends to increase as compared with a region of wavelength of 400 to 700 nm, therefore, when a sensor having sensitivity up to a wavelength region in a near infrared region is used, there is possibility that stray light is generated.SOLUTION: An optical member includes: a base material made of aluminum or an aluminum alloy; a first layer provided on the base material and made of black porous aluminum oxide; and a second layer provided on the first layer and made of aluminum oxide having a plurality of protrusions; and a third layer provided on the second layer and made of nickel or a nickel alloy.SELECTED DRAWING: Figure 5

Electronic device The present description relates to an electronic device (200) comprising: at least one first pixel (231, 232, 233, 234) having a monojunction; at least one second pixel (235) comprising a heterojunction, based on quantum dots; at least one first filter (122, 124, 126, 128) of a first color, allowing only the wavelengths of said first color and infrared to pass through, arranged vertically above the first pixel (231, 232, 233, 234), and at least partially above the second pixel (235); and an optical element (210) interposed between the first filter and the second pixel; the first filter (122, 124, 126, 128) and the optical element (210) being configured so that the first pixel (231, 232, 233, 234) receives wavelengths of said first color and the second pixel (235) receives only infrared wavelengths. Figure for the abbreviation: Fig. 4

A method of characterizing a device under test (DUT) includes illuminating the DUT with a broadband optical beam within an optical field of view (FOV), illuminating the DUT with an X-ray beam within an X-ray FOV overlapping the optical FOV, and concurrently acquiring X-ray metrology information, e.g., one or more X-ray images utilizing various modalities, such as absorption, phase contrast difference, darkfield, small angle X-ray scattering (SAXS) and / or fluorescence, from the X-ray FOV and a plurality of optical images of the optical FOV, each of the optical images corresponding to respective selected wavelengths of the broadband optical beam from each of ultraviolet, visible, and infrared wavelengths, for example including deep ultraviolet, near infrared, or short-wavelength infrared wavelengths. The DUT may be one or more substrates, e.g., stacked, and include electronic devices such as three-dimensional integrated devices.

This invention discloses an activated water treatment device and method, comprising a water tank, a circulating pump, a jet mixer, and a far-infrared irradiation tube. Upon starting the circulating pump, the water to be treated in the tank is pressurized by the pump to form a high-speed water flow. This high-speed water flow flows from the inlet section to the mixing section. As the high-speed water flow passes through the venturi-structured mixing section, a negative pressure is created. Under this negative pressure, outside air is drawn into the mixing section through the air intake structure, air inlet, and air outlet, where it is fully sheared, collided, and mixed with the high-speed water flow, forming a gas-liquid mixture rich in microbubbles. This gas-liquid mixture is discharged from the outlet section to the far-infrared irradiation tube. The far-infrared emitting material layer emits far-infrared wavelengths in the range of 4-16 μm. This far-infrared wavelength can effectively penetrate the water and microbubbles in the gas-liquid mixture, acting on water molecules, breaking the hydrogen bonds between water molecules, and altering the arrangement of water molecules, thereby enhancing the activity of the water.

A display system includes a substrate, an optically reflecting first film defining a plurality of first openings across a length and a width of the first major surface, pluralities of visible light emitting first devices, infrared light emitting second devices, and infrared light detecting third devices disposed in the first openings of the first film and mounted on the substrate, and an optically reflecting second film disposed on the pluralities of first, second, and third devices and the optically reflecting first film opposite the substrate. For a visible wavelength range and an infrared wavelength range, the first film has an average reflectance of greater than about 60% for each of the visible and infrared wavelength ranges, and the second film has an average reflectance of greater than about 60% for the visible wavelength range and an average transmittance of greater than about 50% for the infrared wavelength range.

Disclosed is a single photon detection device comprises a photodetection layer including a first surface and a second surface positioned opposite to each other. The photodetection layer comprises a first well having a first conductivity type, diffraction patterns positioned between the second surface and the first well, the diffraction patterns configured to receive incident light and diffract the incident light such that first-order diffracted light has a highest diffraction efficiency in a red or near-infrared wavelength band; a highly doped region positioned between the first surface and the first well and having a second conductivity type different from the first conductivity type, and a contact region electrically connected to the first well and having the first conductivity type.

The invention discloses a pulse type infrared low-temperature drying device and method, and relates to the technical field of radiation drying, and the pulse type infrared low-temperature drying device and method comprises the following steps: S1, heating a drying cavity to a set temperature, starting a dehumidification function, and stabilizing for 3-5 minutes; s2, the materials are conveyed into a drying cavity, the materials are recognized, and material attributes are obtained; s3, initial parameters are set according to the recognized material matching material database, pulse type infrared radiation is started, and the initial parameters comprise the infrared wavelength, the pulse duty ratio, the radiation power and the pulse frequency; s4, monitoring the moisture content of the material, the surface temperature of the material and the relative humidity in the drying cavity in real time as linkage input signals; according to the method, wavelength self-adaptive adjustment, pulse parameter compensation, directional diversion and energy consumption feedback are integrated and coordinated for the first time, the problem of balancing penetrability, energy consumption, material activity and safety in an existing radiation drying technology is fundamentally solved, and the technical bottleneck of single parameter optimization is broken through.

The application discloses a lutetium manganate-based near-infrared light detection film, a preparation method and application thereof, and has a molecular formula of Lu (0.98‑x) Er 0.02 Yb x MnO3, wherein x is 0.04-0.10. The application is prepared by rare earth elements Er and Yb co-doping for regulation, and a Lu (0.98‑x) Er 0.02 Yb x MnO3 base film colloid, when x is 0.04-0.10, the optical absorption range is widened and the band gap is reduced, and due to efficient energy transmission between Er 3+ , Yb 3+ , efficient pumping of Er 3+ is realized, thereby enhancing the photovoltaic effect of the LMO film, greatly improving the photoelectric current density, and improving the responsivity and the detection rate by several times under 850 nm near-infrared wavelength. The up-conversion strategy based on multiple rare earth elements co-doping has positive multiple positive effects on the light detection performance, and promotes the development of the ferroelectric series in the field of light detection. Meanwhile, the material is expected to become a new generation of environment-friendly lead-free ferroelectric film material.

An optical film includes a plurality of first layers disposed on a plurality of second layers. For each angle of incidence in an incident angle range of 0-50 degrees, an optical transmittance of each of the optical film and the plurality of second layers versus wavelength includes a band edge disposed in a transition wavelength range separating a visible wavelength range where the optical film and the plurality of second layers have respective average optical transmittances Tv and Tv2 from an infrared wavelength range where the optical film and the plurality of second layers have respective average optical transmittances Ti and Ti2. Each of Tv and Tv2 is greater than about 30%. An average value of Tv2 is greater than an average value of Tv by at least 5%. An average value of Ti is less than an average value of Ti2 by at least 20%.

An ab externo automated laser treatment system for treating an eye in a subject, includes a non-contact laser source configured to generate a laser beam having at least one wavelength to treat the eye by directing the laser beam from a location spaced from the eye, wherein the at least one wavelength is a near-infrared wavelength in the range of about 0.5-2.2 μm, a laser scanner optically coupled to the non-contact laser source to receive the laser beam from the non-contact laser source and to scan the laser beam relative to the eye, and a processor, and memory including stored computer-readable instructions that, responsive to execution by the processor, cause the laser treatment system to direct the laser beam to a plurality of trans-scleral treatment locations to be irradiated in a predetermined treatment pattern on an external surface of the eye, wherein the trans-scleral treatment locations are 0-4 mm posterior to the corneolimbal junction, and wherein the laser beam is repetitively directed to the same irradiated trans-scleral treatment locations on the surface of the eye, and the trans-scleral treatment locations are irradiated at intervals sufficient to induce protective thermal preconditioning and therapeutic bio-stimulation of one or more of the trabecular meshwork and / or ciliary body without photocoagulation of the tissue of the eye. Trans-pupillary systems, patient interfaces, and methods are also disclosed.

The invention relates to the field of chemical oxygen-iodine lasers, in particular to a mid-infrared wavelength conversion method and device of a chemical oxygen-iodine laser. Firstly, a pair of pulsed magnetic field generators is placed on the upper side and the lower side of a gain area of an original continuous wave chemical oxygen-iodine laser; the hydrogen Raman pool is used as a magnetic gain switch to enable the laser to output laser pulses with higher peak power, then 1315nm wavelength laser output by the oxygen-iodine chemical laser is guided into the hydrogen Raman pool, the original 1315nm wavelength laser is converted into 2900nm wavelength laser through Raman scattering to be output, finally, the 2900nm wavelength laser is guided into the vacuum bin containing the iron-doped zinc selenide crystal, and the iron-doped zinc selenide crystal is obtained. And by pumping the iron-doped zinc selenide crystal, the laser with the wavelength of 2900 nm is further converted into intermediate infrared laser pulses with the wavelength of 4000-5000 nm. On the premise that the original laser structure is not influenced, the oxygen-iodine chemical laser has the possibility of being applied to the middle infrared band.

To accurately specify the growth region of a plant included in an observation region.SOLUTION: A computer extracts a candidate region from a reflection intensity image of an observation region, which includes reflection intensity of reflected light observed in the observation region as pixel values, by binarizing the reflection intensity image based upon a threshold found from reflection intensity of a specific plant. From classification results obtained by classifying a plurality of pixels included in the candidate region into two groups, the computer specifies the growth region of the predetermined plant based upon pixels belonging to one of the two groups. The plurality of pixels included in the candidate region are classified into the two groups based upon first reflection intensity and second reflection intensity corresponding to positions of the plurality of pixels. The first reflection intensity represents reflection intensity at the wavelength of blue among a plurality of wavelengths of the reflected light, and the second reflection intensity represents reflection intensity at the wavelength of an infrared component among the plurality of wavelengths of the reflected light.SELECTED DRAWING: Figure 2

A method of characterizing a device under test (DUT) includes illuminating the DUT with a broadband light beam within an optical field of view (FOV); irradiating the DUT with an X-ray beam within an X-ray FOV overlapping the optical FOV; and concurrently acquiring X-ray metrology information of the X-ray FOV (e.g., one or more X-ray images acquired with various modalities such as absorption, phase contrast difference, dark field, small angle X-ray scattering (SAXS), and / or fluorescence) and a plurality of optical images of the optical FOV, each of the optical images corresponds to a respective selected wavelength of each of an ultraviolet wavelength, a visible wavelength, and an infrared wavelength (e.g., including a deep ultraviolet wavelength, a near infrared wavelength, or a short-wave infrared wavelength) in the broadband beam. The DUT may be one or more substrates (e.g., in a stack) and include electronic devices such as three-dimensional integrated devices.

An imaging device includes a stack formed by a first silicon photodiode and a second photodiode based on quantum dots. The first silicon photodiode is arranged between a side of the stack configured to receive incident light and the second photodiode. The incident light includes infrared wavelengths and visible wavelengths. A filter positioned between the first silicon photodiode and the second photodiode reflects visible wavelengths back to the first silicon photodiode and passes infrared wavelengths through to the second photodiode.

[Problem] A high-quality captured image is obtained even when the amount of incident light is small. [Solution] The electronic device is provided with a display unit, a first imaging unit provided on the side opposite the display surface of the display unit and capable of imaging light of an infrared wavelength band passing through the display unit, a second imaging unit provided on the side opposite the display surface of the display unit and capable of imaging light of a visible wavelength band passing through the display unit, and a correction unit that corrects image data obtained by imaging performed by the second imaging unit based on image data obtained by imaging performed by the first imaging unit.

A combination structure includes an in-plane pattern of unit cells, where each unit cell includes a nanostructure and a light absorbing layer, each nanostructure having a size that is smaller than a near-infrared wavelength, the light absorbing layer being adjacent to the nanostructure and including a near-infrared absorbing material configured to absorb light in at least a portion of a near-infrared wavelength spectrum. The nanostructure defines a nanostructure array in the unit cell, and a wavelength width of a transmission spectrum of the combination structure in the near-infrared wavelength spectrum at 50% transmission is wider than a wavelength width of a transmission spectrum of the nanostructure array in the near-infrared wavelength spectrum at 50% transmission.

Monitoring device for detecting a driver in a driver's seat of a vehicle, comprising an infrared sensor device, an infrared illumination device, and a reflective layer for reflecting light in the infrared wavelength range, wherein the infrared illumination device is configured to illuminate the driver's face with infrared rays, wherein a front side of the reflective layer is arranged facing the driver's face, and wherein the infrared sensor device is configured to detect the infrared rays of the driver's face reflected by the reflective layer.

High P2O5 copper-containing near-infrared absorbing glass compositions, articles comprising the glass compositions, methods of making the glass compositions, and methods of using the glass compositions are provided. Such glass compositions include, in mole percent on an oxide basis and fluorine content: P2O5: 45-70; SiO2: 2-30; Al2O3: 4-12; Li2O: 0-5.1; K2O: 0.3-10; ZnO: 0-20; SrO: 0-7.4; CuO: 5-16; Sb2O3: 0-4; CeO2: 0-2; total fluorine (F): 0-35. The combined concentration of RO is in the range of 0 to 23.4, and the combined concentration of R'2O is in the range of 0.3 to 14.3. RO is selected from the group consisting of MgO, CaO, SrO, BaO, and ZnO, and R'2O is selected from the group consisting of Li2O, Na2O, and K2O. The glass compositions have a red-shifted cutoff wavelength and good visible light transmission and good absorbance in the near-infrared wavelength range, and are suitable for use as optical filters for cameras.