588 results about "Short wave infrared" patented technology

Certain example embodiments relate to systems and / or methods for preferentially and selectively heat treating conductive coatings such as ITO using specifically tuned near infrared-short wave infrared (NIR-SWIR) radiation. In certain example embodiments, the coating is preferentially heated, thereby improving its properties while at the underlying substrate is kept at low temperatures. Such techniques are advantageous for applications on glass and / or other substrates, e.g., where elevated substrate temperatures can lead to stress changes that adversely effect downstream processing (such as, for example, cutting, grinding, etc.) and may sometimes even result in substrate breakage or deformation. Selective heating of the coating may in certain example embodiments be obtained by using IR emitters with peak outputs over spectral wavelengths where the conductive coating (or the conductive layer(s) in the conductive coating) is significantly absorbing but where the substrate has reduced or minimal absorption.

A MOS or CMOS based active pixel sensor designed for operation with zero or close to zero potential across the pixel photodiodes to minimize or eliminate dark current. In this preferred embodiment, the voltage potential across the pixel photodiode structures is maintained constant and close to zero, preferably less than 1.0 volts. This preferred embodiment enables the photodiode to be operated at a constant bias condition during the charge detection cycle. In preferred embodiments the pixel photodiodes are produced with a continuous pin or nip photodiode layer laid down over pixel electrodes of the sensor. In other preferred embodiments the pixel photodiode structures are produced beside and physically isolated from the regions where CMOS circuits are formed. In some of these preferred embodiments the isolated pixel photodiode structures are comprised of crystalline germanium deposited in cavities in a silicon substrate. This embodiment can be adapted especially for imaging at short wave infrared frequencies. Preferred embodiments are adapted for correlated double sampling.

A system and method for using near-infrared or short-wave infrared (SWIR) light sources for identification of counterfeit drugs may perform spectroscopy using a super-continuum laser to provide detection in a non-contact and non-destructive manner at stand-off or remote distances with minimal sample preparation. Also, near-infrared or SWIR light may penetrate through plastic containers and packaging, permitting on-line inspection and rapid scanning. The near-infrared or SWIR spectroscopy may also be used to detect illicit drugs and their chemical composition. Moreover, the spectroscopic techniques may also be applied to quality assessment and control in pharmaceutical manufacturing, thus permitting the implementation of smart manufacturing with feedback control. Fiber super-continuum lasers may emit light in the near-infrared or SWIR between approximately 1.4-1.8 microns, 2-2.5 microns, 1.4-2.4 microns, 1-1.8 microns. In particular embodiments, the detection system may be a dispersive spectrometer, a Fourier transform infrared spectrometer, or a hyper-spectral imaging detector or camera.

The invention discloses a method for monitoring farmland drought, which comprises obtaining soil or leaf water content of an observing point which is arranged on monitoring ground surface, building a functional relation between soil or leaf water content of the observing point and a corresponding index of characterized farmland drought condition, taking remote sensing data into the functional relation, and obtaining the soil or leaf water content of the monitoring ground surface, wherein the corresponding index of characterized ground surface drought condition is defined according to following methods: Firstly, the farmland ground surface whose vegetation coverage< =15% adopts a vertical drought index, secondly, the farmland ground surface whose vegetation coverage>15% and <= 65% adopts a vegetation conditions albedo drought index, and thirdly, the farmland ground surface whose vegetation coverage>65% to 100% adopts at least one of three following indexes: a short wave infrared vertical water loss index, a vegetation water content index, and a vegetation water deficit index. The ground surface drought monitoring method of the invention is applied for drought testing farmland ground surface with different vegetation coverage degrees.

Certain example embodiments of this invention relate to edge sealing techniques for vacuum insulating glass (VIG) units. More particularly, certain example embodiments relate to techniques for providing localized heating to edge seals of units, and / or unitized ovens for accomplishing the same. In certain example embodiments, infrared (IR) heating elements are controllable to emit IR radiation at a peak wavelength in the near infrared (NIR) and / or short wave infrared (SWIR) band(s), and the peak wavelength may be varied by adjusting the voltage applied to the IR heating elements. The peak wavelength may be selected so as to preferentially heat the frit material used to form a VIG edge seal while reducing the amount of heat provided to substrates of the VIG unit. In certain example embodiments, the substrates of the VIG unit do not reach a temperature of 325 degrees C. for more than 1 minute.

A system for heating a patio, the system comprising: a head unit comprising a heating unit configured for heating a patio; an offset assembly, wherein the offset assembly is coupled to the head unit; a mounting pole comprising a plurality of sections, the mounting pole being coupled to the offset assembly; and a base unit the base unit supporting the mounting pole.

The invention provides a conditioning and making method and a high-efficiency even drying method for a small trash fish marine product, belonging to the technical fields of food conditioning and aquatic product processing. The main process of the invention comprises the following steps of: removing three parts (fish scale, fish head and viscera) of a fresh or iced and fresh small trash fish marine product, washing the small trash fish marine product with clear water, slicing the small trash fish marine product into fish chips with the length of 6-10cm, deodorizing preprocessed fish meat for 4hours with compound rinsing fluid, then carrying out ultrasonic assisted vacuum impregnation conditioning (pickling and seasoning), secondary rinsing, draining, medium-short wave infrared drying pre-dehydrating, pulse spraying negative pressure microwave drying, packaging and sterilizing, thus the small trash fish dried fish prepared food product is obtained. The small trash fish marine product disclosed by the invention has good colour, fragrance and taste, beautiful appearance, low moisture content and complete nutrition, is a high-protein and low-fat food, is beneficial to reducing cholesterol and preventing cardiovascular and cerebrovascular diseases after being eaten for a long time, can be used for adjuvant therapy on leukaemia, stomach cancer and the like and is a high-quality leisure food for both the old and the young.

Apparatus and methods for rapidly detecting, localizing, imaging, and quantifying leaks of natural gas and other hydrocarbon and greenhouse gases. Scanning sensors, scan patterns, and data processing algorithms enable monitoring a site to rapidly detect, localize, image, and quantify amounts and rates of hydrocarbon leaks. Multispectral short-wave infrared detectors sense non-thermal infrared radiation from natural solar or artificial illumination sources by differential absorption spectroscopy. A multispectral sensor is scanned to envelop an area of interest, detect the presence and location of a leak, and raster scan the area around the leak to create an image of the leak. The resulting absorption image related to differential spectral optical depth is color mapped to render the degree of gas absorption across the scene. Analysis of this optical depth image, with factors including known inline pressures and / or surface wind speed measurements, enable estimation of the leak rate, i.e., emission mass flux of gas.

The present invention provides a two-terminal infrared detector capable of detecting a plurality of bands, such as three bands, over the visible and short-wave infrared bands. Detection of three colors enables one to construct composite imagery that provide significantly added contract in comparison to typical grayscale images. In some variations, the device includes multiple absorber and barrier layers that consist of distinct engineered semiconductor alloys which are closely lattice matched to InP.

A system and method for using near-infrared or short-wave infrared (SWIR) light sources for early detection and monitoring of breast cancer, as well as other kinds of cancers may detect decreases in lipid content and increases in collagen content, possibly with a shift in the collagen peak wavelengths and changes in spectral features associated with hemoglobin and water content as well. Wavelength ranges between 1000-1400 nm and 1600-1800 nm may permit relatively high penetration depths because they fall within local minima of water absorption, scattering loss decreases with increasing wavelength, and they have characteristic signatures corresponding to overtone and combination bands from chemical bonds of interest, such as hydrocarbons. Broadband light sources and detectors permit spectroscopy in transmission, reflection, and / or diffuse optical tomography. High signal-to-noise ratio may be achieved using a fiber-based super-continuum light source. Risk of pain or skin damage may be mitigated using surface cooling and focused infrared light.

An aiming device is configured to generate an infrared cross on a target. The cross having a principal wavelength above the wavelength detectable by image intensification night vision devices. A night vision system having a short wave infrared detector includes an illuminator having a principal wavelength above the wavelength detectable by image intensification night vision devices. A beacon is configured to generate light at a wavelength above which can be scene with image intensification night vision devices.

The invention discloses a short wave / medium wave / long wave infrared detector based on InAs / GaSb class II-type superlattice materials. The detector comprises a GaSb substrate, an epitaxial structure deposited on the GaSb substrate, a passivation layer and a metal electrode, wherein the epitaxial structure sequentially comprises a GaSb buffering layer, an n-type InAs / GaSb superlattice contact layer, a first M-type InAs / GaSb / AlSb / GaSb / InAs superlattice hole blocking layer, a p-type InAs / GaSb superlattice long wave infrared absorbing layer, a first p-type InAs / GaSb superlattice contact layer, a p-type InAs / GaSb superlattice medium wave infrared absorbing layer, a second M-type InAs / GaSb / AlSb / GaSb / InAs superlattice hole blocking layer, a p-type InAs / GaSb superlattice short wave infrared absorbing layer, a second p-type InAs / GaSb superlattice contact layer and a cover layer. The detector is of a pMp-p-pi-M-n heterostructure and has the advantages of being low in crosstalk, low in dark current and high in detection rate.

Apparatus and methods for rapidly detecting, localizing, imaging, and quantifying leaks of natural gas and other hydrocarbon and greenhouse gases. Scanning sensors, scan patterns, and data processing algorithms enable monitoring a site to rapidly detect, localize, image, and quantify amounts and rates of hydrocarbon leaks. Multispectral short-wave infrared detectors sense non-thermal infrared radiation from natural solar or artificial illumination sources by differential absorption spectroscopy. A multispectral sensor is scanned to envelop an area of interest, detect the presence and location of a leak, and raster scan the area around the leak to create an image of the leak. The resulting absorption image related to differential spectral optical depth is color mapped to render the degree of gas absorption across the scene. Analysis of this optical depth image, with factors including known inline pressures and / or surface wind speed measurements, enable estimation of the leak rate, i.e., emission mass flux of gas.

The invention discloses a method for producing instant straight rice vermicelli, and belongs to the technical field of food processing. The rehydration property and eating quality of the instant straight rice vermicelli are improved on the basis of a one-step aging method, as well as strong cavatition and a uniform inner-outer drying effect during cooperative drying of ultrasonic wave and medium-short wave infrared rays. The method mainly comprises the following steps: by selecting early indica rice as raw materials, performing immersing, crushing, flour stirring, dual-screw extrusion, aging, re-steaming and washing, and then performing cooperative drying through the ultrasonic wave and medium-short wave infrared rays to obtain the instant straight rice vermicelli which is low in breakage rate, excellent in rehydration property and good eating quality.

The invention discloses a catadioptric hybrid multispectral imaging system, which comprises a primary mirror, a catadioptric dual-purpose secondary mirror, a wedge-shaped dichroic beam splitter, a medium wave or long wave infrared or medium-long wave infrared dual-waveband imaging mirror assembly, a medium wave or long wave infrared or medium-long wave infrared dichroic detector unit, a visible to near infrared waveband imaging mirror assembly, a visible to near infrared waveband beam splitting device and a detection unit thereof, a short wave infrared waveband imaging mirror assembly, and a short wave infrared waveband beam splitting device and a detection unit thereof, wherein a hole is formed at the center of the primary mirror, and the reflecting surface of the primary mirror is a concave surface; and the incident surface of the catadioptric dual-purpose secondary mirror is a convex surface. The system can realize imaging with common field of view and common aperture of a same object, improve the utilization rate of light energy, save space for the beam splitter and the system, prevent parasitic light from directly leaking into the imaging mirror assembly from the hole formed on the primary mirror, correct asymmetric aberration, be more conductive to realizing large aperture and the larger field of view and significantly improve the imaging quality. The imaging with the same optical axis and the common field of view can enable an image to be easy to register.

The invention relates to a multielement remote sensing information coordinated snow cover parameter inversion method. The normalized vegetation / snow cover indexes are calculated by utilizing a green ray waveband and short wave infrared of two data sources Terra and Aqua and are combined with a near-infrared band and the green ray waveband to obtain a snow cover inversion result at an initial stage, multi-temporal coordinated cloud removing processing is carried out on the snow cover inversion result, and coordinated multi-temporal microwave data generate a final snow cover inversion product; the snow depth is inversed by utilizing passive microwave data, the snow depth which is greater than 5cm is taken as an effective value and is combined with a microwave snow cover classification chart for performing multi-temporal coordination, the snow depth which is smaller than or equal to 5cm is taken as pixel values which are expressed by an optical data inversion result and is combined with an optical snow cover classification chart for improving the inversion precision, and the microwave inversion result and the optical inversion result are coordinated for generating a final snow depth inversion product. The multielement remote sensing information coordinated snow cover parameter inversion method has the beneficial effects that the precision and the integrity of snow cover parameter inversion are high, and for inversion of the snow depth which is smaller than or equal to 5cm, an optical data inversion formula is invented, so that the method makes up the blank of inversion in a shallow snow area.

A SWIR hyperspectral imaging filter has serial stages along an optical signal path with angularly distributed birefringent retarders and polarizers. The retarders can include active retarders such as tunable liquid crystal birefringent elements, passive retarders such as fixed retarders, and / or combinations thereof. Distinctly different periodic transmission spectra are provided by different filter stages, each having multiple retarders, in particular with some stages having broad bandpass peaks at wide spectral spacing and other stages have very narrow closely spaced peaks. The respective spectra include at least one tunably selectable band at which the transmission spectra of the filter stages coincide, whereby the salutary narrow bandpass and wide spectral spacing ranges of different stages apply together, resulting in a high finesse wavelength filter suitable for spectral imaging. The filter may be configured to provide faster switching speed and increased angle of acceptance and may operate in the rage of approximately 850-1700 nm.

The embodiment of the invention discloses a control method and system for the forest fire exploration through an unmanned plane. The method comprises the steps: obtaining a fusion image and the brightness temperature values of all pixels in the fusion image through the preprocessing, splicing and fusion and brightness temperature inversion of a visible image, a short-wave infrared image, a mid-wave infrared image and a long-wave infrared image; recognizing the position of an open fire point and the position of a blind fire point according to the fusion image and the brightness temperature values of all pixels in the fusion image; finally analyzing the influence scope of forest fire and the distance between the center of the forest fire and a power transmission line according to the positions of the fire points, determining the level of forest fire, and carrying out the early warning according to the level of forest fire. Compared with the prior art, the method can effectively distinguish the open fire point and the blind fire point, can carry out the early warning timely according to the level of forest fire, can effectively improve the detection rate of the forest fire and the put-out success rate of the forest fire, reduces the safety risk of fire fighters, and guarantees the safe and reliable operation of power transmission lines.

A SWIR hyperspectral imaging filter has serial stages along an optical signal path with angularly distributed birefringent retarders and polarizers. The retarders can include active retarders such as tunable liquid crystal birefringent elements, passive retarders such as fixed retarders, and / or combinations thereof. Distinctly different periodic transmission spectra are provided by different filter stages, each having multiple retarders, in particular with some stages having broad bandpass peaks at wide spectral spacing and other stages have very narrow closely spaced peaks. The respective spectra include at least one tunably selectable band at which the transmission spectra of the filter stages coincide, whereby the salutary narrow bandpass and wide spectral spacing ranges of different stages apply together, resulting in a high finesse wavelength filter suitable for spectral imaging. The filter may be configured to provide faster switching speed and increased angle of acceptance and may operate in the rage of approximately 850-1700 nm.

A combination thermal and visual image capturing device used to capture real time thermal and visual images of surface and subsurface biological tissue, said device comprising: a power source, said power source functionally connected to said device; a housing, a long wave infrared microbolometer, said microbolometer functionally connected to said power source a digital camera; a short wave infrared microbolometer, said microbolometer functionally connected to said power source; a digital camera, said digital camera functionally connected to said power source; and a digital camera, said digital camera functionally connected to said power source, wherein said digital camera and 3D camera are contained within a USB peripheral device; said imaging apparatus further comprising means to electronically provide combined thermal image information from the microbolometers and visual image information from said digital camera and said 3D camera to another electronic device.

The invention relates to a system and method for automatically calibrating the parallelism of optical axes of multi-spectral multi-optical-axis optoelectronic devices. The axis automatically-calibrating method can be applied to the optoelectronic devices of helicopters, unmanned aerial vehicles, fixed wing aircrafts, vehicle-mounted platforms, ship-based platforms and the like, and the adverse factors of poor axis calibrating accuracy, complex procedures, poor maintaining performance, high cost and the like caused by the manual axis calibrating scheme of an existing ground axis calibrating instrument are overcome. Short wave infrared band laser spot tracing instruments, external characteristic targets and the video picture processing technology are adopted for achieving automatic calibrating of the optical axes of the multi-spectral optoelectronic devices. On the premise that the system complexity is reduced, rapid and automatic calibrating of the optical axes of sensors is achieved.

A system and method for using near-infrared or short-wave infrared (SWIR) light sources for identification of counterfeit drugs may perform spectroscopy using a super-continuum laser to provide detection in a non-contact and non-destructive manner at stand-off or remote distances with minimal sample preparation. Also, near-infrared or SWIR light may penetrate through plastic containers and packaging, permitting on-line inspection and rapid scanning. The near-infrared or SWIR spectroscopy may also be used to detect illicit drugs and their chemical composition. Moreover, the spectroscopic techniques may also be applied to quality assessment and control in pharmaceutical manufacturing, thus permitting the implementation of smart manufacturing with feedback control. Fiber super-continuum lasers may emit light in the near-infrared or SWIR between approximately 1.4-1.8 microns, 2-2.5 microns, 1.4-2.4 microns, 1-1.8 microns. In particular embodiments, the detection system may be a dispersive spectrometer, a Fourier transform infrared spectrometer, or a hyper-spectral imaging detector or camera.

A system and method for identifying an unknown substance in a sample comprising multiple entities. A method may comprise generating a RGB image representative of a sample and assessing said RGB image to identify at least one region of interest. This region of interest may he assessed to generate a spatially accurate wavelength resolved image, which may be a hyperspectral image. This spatially accurate wavelength resolved image may comprise a fluorescence, Raman, near infrared, short wave infrared, mid wave infrared and / or long wave infrared image. This spatially accurate wavelength resolved image may be assessed to identify said unknown substance. A system may comprise: a reference database, a first detector for generating an RGB image, a second detector for generating a spatially accurate wavelength resolved image, and a means for assessing said RGB image and said spatially accurate wavelength resolved image.

A reversible camouflage material including a textile layer having a woodland camouflage print thereon, an infrared suppressing layer, and a textile layer having a desert camouflage print thereon is provided. The infrared suppressing layer may include a polyurethane layer sandwiched between a carbon-containing ePTFE layer and an ePTFE layer. The carbon may be provided in an oleophobic layer on the ePTFE or within the ePTFE film. In one embodiment, the desert camouflage textile is absent and a coating composition that includes a colorant and infrared suppressive additives is applied to the outer surface of the ePTFE layer. The inventive camouflage material demonstrates camouflage concealment in the near IR (nIR) and short wave infrared (SWIR) wavelengths of the electromagnetic spectrum. In addition, the camouflage material is highly breathable and lightweight. The material is particularly suitable for making reversible camouflage garments such as jackets and pants.

The invention discloses a fire point detection method based on Landsat-8 landsat data, and relates to the field of remote sensing technologies. According to the method, by using data of a Landsat 8OLI sensor with a spatial resolution of 30m, suspected fire points are extracted by self-adaptively determining a threshold by using an improved normalization combustion index NBRS result according to spectrum characters of a high-temperature fire point at a near-infrared band and a short wave infrared band, then mistakenly detected points are removed by further using a peak relation of the high-temperature fire point at the short wave infrared band, and thus a final fire point product is obtained. According to the algorithm provided by the invention, the fire point of which the area is about 10% of a pixel area can be detected, the interference of clouds and buildings can be effectively eliminated, and an accuracy rate about 90% can also be achieved while ensuring a relatively low omission rate; compared with the traditional algorithm, the algorithm provided by the invention is greatly improved in fire point extraction accuracy.

A surveillance planning and analysis tool kit for planning and analysis at a region. The tool kit includes a computer system programmed with software adapted to simulate optical and imaging parameters at the region including a realistic geo-spatial map of the region, a number of surveillance cameras, camera specifications and lighting conditions. Preferred embodiments include computer software to permit planning and analysis of optical imaging technologies in the 400 nm-1700 nm spectrum that comprises the visible, near infrared, and short wave infrared where the primary signal is ambient light reflected from objects.

The invention discloses a multi-aperture multi-band high-resolution-ratio imaging device and method. The device comprises a Cassegrain optical system and a multi-aperture multi-band imaging device. The Cassegrain optical system is composed of a primary mirror of a Cassegrain telescope and a secondary mirror of the Cassegrain telescope. The multi-aperture multi-band imaging device comprise a square visible light CCD detector array, a square short wave infrared CCD detector array, a square medium wave infrared CCD detector array, a square long wave infrared CCD detector array, four lenses corresponding to visible lights, short wave infrared rays, medium wave infrared rays and long wave infrared rays, a focal plane coding module and a light insulation baffle, wherein the four CCD detector arrays are equal in size. The multi-aperture multi-band high-resolution-ratio imaging device and method overcome the difficulties encountered when a single-band infrared image is used for detecting a small target in the prior art, and reduce the false alarm probability in small target detection. The multi-aperture multi-band high-resolution-ratio imaging device and method have the advantages of having ultrahigh-resolution-ratio imaging capacity and saving imaging pixels and effectively overcome the common defect that the field of view is small.

The invention discloses a laboratory spectrum calibration and correction method at the short wave infrared band (1000-2500nm) for a hyper spectral imager. The method includes the steps as follows: based on the scanning method of a monochromator, obtaining the relation between the passage deflection and time migration of correction wave bands through collecting the correction wave bands and adopting numerical calculation and linear regression analysis, building a spectral line drift correction model, and finally performing spectral line drift correction for the data of the entire short wave infrared band as per the characteristics of the spectral line drift correction model. Through the adoption of the laboratory spectrum calibration and correction method for the hyper spectral imager, the problem that the spectral line wave length drifts to long wave caused by interior heat production of the imager is solved, and within the allowable range of the calibration accuracy, the model is reliable, the time migration rule has repeatability, and the utility value is realized. The solution provided by the invention has already been practically applied to the laboratory spectrum calibration and correction method for the hyper spectral imager, and the model provided by the invention can be used for providing a reference frame for other remote sensors of the same type in case of similar conditions.