58 results about "Blue band" patented technology

Methods and apparatus are provided for selectively heating blood vessels in a patients skin to effect a desired dermatological (medical or cosmetic) treatment. For shallow vessels, particularly plexus vessels and superficial vessels / veins, radiation is applied to the vessels involved in the treatment which includes substantial radiation in a blue band of approximately 380-450 nm. The invention also involves maximizing the radiation used for which the safety radio for the area being treated is greater then one and minimizing the radiation used for which the safety ratio is less then one. This generally involves, depending on the blood vessel involved in the treatment and the patient's skin type, using radiation in one or more of a blue, green-yellow and near infrared wavelength band and filtering out radiation at other wavelengths, including radiation between the wavelength bands used.

The inventioN discloses a CMOS image sensor technology-based NP type single-photon avalanche diode (SPAD). The basic structure of the SPAD comprises a deep N-well arranged above a P-type silicon substrate; a P-well formed above the deep N-well; a lightly-doped guard ring surrounding the P-well; a N+ region formed above the P-well and overlapped with the guard ring; a PN-junction formed between the N+ region and the P-well; a cathode electrode and an anode electrode respectively led out of the N+ and P+; a heavily-doped P-type region formed above the N+ region and the guard ring; a P-well surrounding the guard ring and a substrate electrode led out of the P+. According to the technical scheme of the invention, through forming the heavily-doped P-type region on the surface of the N+ region, the dark counting caused by defects on the interface of an NP-type SPAD device can be reduced. Based on the effective layout technique, the dark counting caused by defects in the STI is reduced. Based on the effective guard ring technique, the edge breakdown of the SPAD device is prevented. Through applying an appropriate bias voltage between the electrodes, the response within the blue band is enhanced.

The invention provides a pixel structure and a high-brightness wide-color-gamut long-life display method. The pixel structure comprises a plurality of pixel units which are arranged in an array type. Each pixel unit comprises a red sub-pixel (R), a green sub-pixel (G), a first blue sub-pixel (B1) and a second blue sub-pixel (B2). A chroma of the first blue sub-pixel (B1) is different from a chroma of the second blue sub-pixel (B2). The chroma of the first blue sub-pixel (B1) and the second blue sub-pixel (B2) correspond to different blue bands. By using the display method, according to the color gamut and the brightness needed by actual display, lightening or closing of the first blue sub-pixel (B1) and lightening or closing of the second blue sub-pixel (B2) are selected. Effects of increasing display brightness, expanding the color gamut and prolonging a blue sub-pixel life are reached.

A surface emitting laser which oscillates at a wavelength X of a blue band, including a photonic crystal layer including a photonic crystal structure, an active layer provided on one surface of the photonic crystal layer, and an electrode provided on the other surface of the photonic crystal layer for injecting electric current into the active layer. The photonic crystal structure has a thickness of 100 nm or more. A laser beam is emitted toward a direction opposite to a side of the photonic crystal layer on which the electrode is provided.

The invention discloses an LED device. The LED device comprises a substrate, a cup-like structure and a separation structure. The separation structure divides the accommodating space defined by the cup-like structure into a first block and a second block. A first blue light chip and a first package colloid are arranged in the first block, and a second blue light chip and a second package colloid are arranged in the second block. The second package colloid is mixed with a green phosphor powder for completely transforming the monochromatic emission spectrum of the second blue band of the second blue light chip to the monochromatic emission spectrum of the green band. The green phosphor powder is selected from one of silicates, nitrogen oxides, lutetium aluminum oxides and calcium scandium oxides. The liquid crystal display device in the invention can effectively reduce the difference of characteristics of three chips with different colors of the conventional LED device, and can greatly improve the market competitiveness of liquid crystal display devices with the LED device.

The invention discloses thallium-doped cesium iodide composite film and a preparation method thereof. The composite film is formed by sequentially coating a copper film layer, a thallium-doped cesium iodide film layer and a moistureproof protecting film layer on a base material from the upper part to the lower part; the preparation of the composite film can adopt the existing film coating technology to sequentially coating the copper film layer, the thallium-doped cesium iodide film layer and the moisture protecting film layer on the base material. Research shows that the composite film has the advantages that as a metal Cu film and a CsI:Tl film have efficient metal plasma enhanced luminescence effect, compared with a film, without an added metal Cu film layer, the luminescent intensity of the composite film is furthest increased by more than 85 times in a 400 to 450 nm blue band, and the composite film has strong blue-light emitting feature, and is expected to be applied to photoelectron fields, such as LED and the like.

A light source unit (41) connected with a control unit (42) and an endoscope (101) emits whit light with a specified light quantity based on a signal from the control unit (42). The light source unit (41) comprises a lamp (15) as a white light source, an infrared cutting filter (15a), a light quantity limiting filter (16) inserted / removed into / from a light path to limit a light quantity in a specified wavelength region of white light, a filter inserting / removing drive unit (17) for inserting / removing the light quantity limiting filter (16) into / from the light path, and a condenser lens (18) for emitting white light. For example, the light quantity limiting filter (16) limits, when transmittance in a blue band is 100%, transmittance in the other bands to 50%. Accordingly, an S / N in a visible light region in generating a discrete spectral image by a lighting light is improved.

A method for evaluating fusion quality of remote sensing images is provided. Considering the influence of spectral domain distortion and spatial domain distortion on the image quality of remote sensing fusion, the method extracts red-band images, green-band images, blue-band images, near infrared-band images, normalized vegetation index images, normalized difference water index images, and road and building index images, and the original multivariate Gaussian model of training sample set is constructed by extracting statistical eigenvectors of all sub-blocks. In the test phase, by acquiring the original multivariate Gaussian model of test sample set composed of test remote sensing fusion images, according to the original multivariate Gaussian model constructed in the training stage, the objective quality evaluation prediction value of the test remote sensing fusion image is predicted. Because the statistical feature vector information obtained can reflect the quality change of the remote sensing fusion image, the correlation between the objective evaluation result and the subjective perception is effectively improved.

A display device and a display module. The display module includes: a blue LED chip, a yellow phosphor layer and a colour filter. A peak wavelength of a blue light emitted from the blue LED chip is in a range of 460±5 nm. The blue LED chip excites the yellow phosphor layer to emit a white light. The colour filter is disposed outside the yellow phosphor layer, and the white light emitted irradiates on colour filter. Through right shifting the peak wavelength of the blue band emitted from the blue LED chip to about 460 nm to realize the low blue energy and decrease the radiation. The transmittance of blue light of the colour filter is less than 7%, the transmission peak wavelength of blue light is in a range of 440-450 nm. The display module can decrease the energy of the blue band and ensure the display effect.

The invention relates to the technical field of pollutant tracing, and provides a black and odorous water positioning method and device based on a remote sensing image and related equipment thereof. The method comprises the following steps: obtaining a target remote sensing image from an original remote sensing image; obtaining the reflectivity of an object in the target remote sensing image, andobtaining the normalization index of the object corresponding to each color through the reflectivity calculation; when the normalization index is within a preset first monitoring threshold range, determining the object corresponding to the normalization index as a target water body; acquiring spectral reflectance of a target water body in red, green and blue bands in the target remote sensing image; calculating according to the spectral reflectance to obtain black and odorous water body indexes; when the black and odorous water body index is within a preset second monitoring threshold range, determining a target water body in a range corresponding to the black and odorous water body index as a black and odorous water body. According to the embodiment of the invention, the method can solveproblems in the prior art that the positioning of the black and odorous water is lower in precision and is larger in calculation amount.

The invention discloses a simple and small optical loss protection device including four amplifier of optical fiber with erbium being mixed into, four filters, four optical switches and four red and blue band filters. In normal operation, four multiplexing optical switches are straight through. Working wave in A direction through A directional input optical switch in low part of node, join / dividing filter, B directional output optical switch, red and blue band filters and B directional output. Protection wave of A directional input is connected to optical switch in B directional input, then, passing through attenuator and connecting to optical switch in A directional output, through red and blue band filters in B direction output, and B direction output. Working wave in B directional input has its path accordingly.

The invention relates to a plant sunscreen synergism combination and a preparation method thereof. The plant sunscreen synergism combination is characterized in that a hydrolyzed rice bran extract, a cistus incanus flower / leaf / stem extract, a tagetes erecta extract, a porphyra umbilicalis extract, a leontopodium alpinum extract, gamma-cyclodextrin and hydroxypropyl guar gum prepare into the plant sunscreen synergism combination according to the weight ratio of (3-5):(1-3):(1-3):(3-5):(3-5):(15-20):(5-10). The plant sunscreen synergism combination has the function of protecting near-infrared bands and visible blue bands and can enhance sunscreen effects of existing sunscreen preparations.

The invention relates to a mobile phone wireless charging system with a Bluetooth function controlled by APP. The mobile phone wireless charging system comprises a wireless transmitter, a wireless receiver and a mobile phone, wherein the wireless transmitter consists of a DC filtering circuit, a transmitting control circuit, a transmitting coil assembly, a Bluetooth module circuit, an electronic switching circuit and a switch filtering circuit; the wireless receiver consists of a receiving coil assembly, a receiving control circuit and a filtering output circuit; the mobile phone comprises charging control management software which is formed by an APP charging special application program and a mobile phone internal Bluetooth functional program. When the mobile phone wireless charging system is in use, the wireless transmitter is arranged in a public place in a mobile phone public charging facility form; the wireless receiver is placed in a mobile phone back shell; the mobile phone downloads and installs the APP charging special application program from the internet; the APP charging special application program controls a mobile phone blue band and the Bluetooth in the wireless transmitter to perform data communication to control mobile phone charging; a user scans a two-dimensional code on the wireless charging transmitter by the mobile phone and then pays to control charging automatically; and the mobile phone wireless charging system is simple in structure, creative in working pattern and quite high in practicability.

The invention discloses a fiber perimeter sensing and positioning system and a method for determining the position of an intrusion disturbance point. According to the fiber perimeter sensing and positioning system, blue / red-band filters are used for dividing broadband light outputted by an ASE light source into blue band and red band parts with basically equal powers; the divided light enters twoM-Z interferometers respectively; light outputted by the two M-Z interferometers passes through the corresponding blue / red-band filter or the red / blue-band filter and then the processed light is transmitted in a transmission fiber clockwise and counterclockwise respectively; and during the transmission process, scattered light is transmitted to the respective M-Z interferometers by rayleigh scattering to form interference signal and the system carries out identification based on the formed interference signal and determines whether an intrusion event occurs at a fiber path. In addition, the method for determining the position of an intrusion disturbance point that is based on the fiber perimeter sensing and positioning system is used for detecting phenomena like intrusion, vibration and natural destruction on a transmission fiber link and is capable of localizing the position with occurrence of an intrusion event at the fiber path rapidly and accurately.

The invention provides single matrix white phosphor and a preparation method thereof. The chemical expression of the phosphor is (SryBa1-x-y)(MgmZn1-m-p-q)2(PO4)2:xEu,pMn,qTb, wherein x is greater than 0 and less than 0.1; y is greater than 0 and less than 1; m is greater than 0 and less than 1; p is greater than 0 and less than 0.1; and q is greater than 0 and less than 0.1. The phosphor prepared by the method is fine and uniform in granules, can emit red, green and blue bands after being excited by 350-410nm near ultraviolet and can be used for the white LED excited by the near ultraviolet.

The invention provides single matrix white phosphor for an LED (light emitting diode) and a preparation method thereof. The chemical expression of the phosphor is Na2.5Tb0.5Mg7(PO4)6:xEu,yMn, wherein x is greater than 0 and less than 0.1 and y is greater than 0 and less than 0.5. The phosphor prepared by the method is fine and uniform in granules, can emit red, green and blue bands after being excited by 350-410nm near ultraviolet and can be used for the white LED excited by the near ultraviolet.

The invention discloses a remote sensing image fusion method and system based on a characteristic ratio index, computer equipment and a storage medium. The method comprises the following steps: acquiring a satellite remote sensing image with a near-infrared band, a red band, a green band and a blue band; calculating a characteristic ratio index by taking a near-infrared band as a numerator and one of a red band, a green band and a blue band or a linear combination thereof as a denominator; reconstructing a red wave band and a green wave band according to the characteristic ratio index; and according to the reconstructed red wave band, the reconstructed green wave band and the original blue wave band, synthesizing to obtain a final color image. The visual resolution and computer resolution of the true color remote sensing image can be improved, the application potential of the historical remote sensing data true color image mode is mined, and the application effect of the current situation and the future remote sensing data true color image mode is improved.

One aspect of this invention relates to an illumination device for an optical printer, the illumination device comprising: a first array of light sources (20) comprising a plurality of light source elements (14) that are each operable to emit light within a red band of the visible electromagnetic spectrum; a second array of light sources (21) comprising a plurality of light source elements (14) that are each operable to emit light within a blue band of the visible electromagnetic spectrum; and a third array of light sources (22) comprising a plurality of light source elements (14) that are each operable to emit light within a green band of the visible electromagnetic spectrum; wherein said first, second and third arrays of light sources (20, 21, 22) are generally linearly arranged along respective substantially parallel notional lines (34) on a substrate (15); and said plurality of light source elements (14) of each said array (20, 21, 22) are arranged such that respective adjacent light source elements of said plurality are offset from one another with respect to the associated notional line (34). Other aspects relate to printing heads, printing head assemblies, optical printers, and methods and apparatus for calibrating an optical printer.

There are provided a medical image processing apparatus, an endoscope apparatus, a diagnostic support apparatus, and a medical service support apparatus capable of detecting red blood cells using an endoscope image. A medical image processing apparatus includes: a medical image acquisition unit that acquires short wavelength medical images, which are medical images including a subject image and which are obtained by imaging a subject with light in a shorter wavelength band than a green wavelength band; and a red blood cell detection unit that detects red blood cells using the short wavelength medical images. The light in the short wavelength band is, for example, light in a blue band or a violet band of a visible range. The red blood cell detection unit detects, for example, a high-frequency, granular, and high-density region as red blood cells.

The invention provides a soil information extraction method and device for an unmanned aerial vehicle visible light image, and the method comprises the steps: carrying out the segmentation of the visible light image, so as to generate a segmentation result of the visible light image; extracting initial soil information from the segmentation result by using a differential vegetation index method; and extracting final soil information from the initial soil information according to the red band, the green band and the blue band in the visible light image. According to the unmanned aerial vehiclevisible light image-oriented soil information extraction method and device provided by the invention, in the unmanned aerial vehicle visible light image, soil information and other information in theunmanned aerial vehicle visible light image can be distinguished only by utilizing three wave bands R, G and B in the visible light image, so that the soil information is accurately extracted.

The embodiment of the invention discloses a leaf chlorophyll content inversion method and device, electronic equipment and a storage medium, and the method comprises the steps: calculating the chlorophyll vegetation index of a target pixel through the reflectivity of a near-infrared band, the reflectivity of a red band and the reflectivity of a blue band of the target pixel in a remote sensing image; and calculating the leaf chlorophyll content of the target pixel according to the chlorophyll vegetation index. The sensitivity of the chlorophyll vegetation index constructed by the reflectivityof the near-infrared band, the reflectivity of the red edge band and the reflectivity of the blue band to vegetation canopy information and background information is lower than the sensitivity of thechlorophyll vegetation index to leaf chlorophyll content; therefore, influence of vegetation canopy information and background information on leaf chlorophyll content calculation is reduced, and the calculation precision of the leaf chlorophyll content inversion method based on the chlorophyll vegetation index is further improved.

The invention discloses a method for extracting an optimized lichen coverage index of the Antarctic peninsula. The spectral characteristic of the reflection region based on the blue band-near coast band is the characteristic reflection region for differentiating the lichen different from other ground objects, the lichen coverage index is designed and optimized to reflect the coverage and distribution condition of the pioneer vegetation lichen in the Antarctic region. Due to the convenience of lichen coverage index calculation, compared with a traditional classification method, the large-area lichen coverage and distribution information of the Antarctic region can be rapidly extracted on the basis of remote sensing images, a high-resolution lichen index product is constructed and generated,and the method can be used for large-range dynamic change monitoring of Antarctic vegetation lichen.

First, red blue-band wave separator is utilized to decompose signal of dense wavelength division multiplex (DWDM) into red band and blue band. Then, negative dispersion compensation module (-DCM) is utilized to compensate signal in red band, and positive dispersion compensation module (+DCM) is utilized to compensate signal in blue band. Finally, wave synthesizer for red and blue bands is utilized to compose compensated signals. Moreover, in order to keep balance for powers at output ends of wave synthesizer for red and blue bands, tonable optical attenuator can be utilized to adjust light power of red or blue band. Dispersion compensation module in low cost for G.652 optical fiber can be utilized as positive DCM or negative DCM in the invention. Thus, the device disclosed in the invention also will be more economic.

The invention provides a white-light LED structure with an extremely high barrier layer insertion layer. In the white-light LED structure with the extremely high barrier layer insertion layer, a dual-band MQW layer is grown on a substrate, so that the white-light LED structure is used for simultaneously stimulating blue light and yellow light, and the blue light and the yellow light are mixed to generate white light; and with the structure of inserting the extremely high barrier layer insertion layer into the blue-band MQW layer, the problem of energy band of a blue light-emitting region to cause that blue-light spectrum cannot be simulated can be prevented, and white-light LED with high light-emitting efficiency, good stability and uniform chromaticity is further successfully grown. Compared with an existing white-light LED technology, fluorescent powder is not used, thus, the package process can be reduced, and the problem of stability generated by fluorescent powder aging also can be reduced.

The invention belongs to the technical field of high-resolution optical remote sensing image preprocessing, and discloses an efficient method suitable for large-scale optical remote sensing image hazeremoval. The method comprises the following steps: inputting original remote sensing data and default parameters; calculating a pixel intensity norm; calculating a haze thickness image; calculating ahaze thickness mask image; calculating a refined haze thickness image; extracting a large-patch haze image Haze_map_majorsity and a pixel position map, and obtaining a large-patch haze image Haze_map_majorsity; calculating a haze sensitive pixel HTMi (x, y); haze is removed; haze compensation. According to the efficient haze removal method suitable for large-scale optical remote sensing images, HTM is estimated from an average vector L2-norm of a given sample window blue band, a compensation strategy of fog-free pixels and fog pixels is improved, the method has been successfully applied to various VHR optical satellite images with complex haze coverage in a dense area, and a reference value is provided for haze removal and haze degree evaluation of a remote sensing image.

The invention discloses a remote sensing image fusion method and system based on a fusion derivative index, computer equipment and a storage medium. The method comprises the following steps: acquiring a satellite remote sensing image with a near-infrared band, a red band, a green band and a blue band; performing inter-spectrum fusion on the near-infrared band and one or more of the red band, the green band and the blue band to obtain a fused result; calculating a ratio index of fusion derivation by taking the wave band result after fusion as a numerator and the corresponding wave band before fusion as a denominator; reconstructing a red wave band and a green wave band according to the ratio index of fusion derivation; and according to the reconstructed red wave band, the reconstructed green wave band and the original blue wave band, synthesizing the final color image. According to the method, the visual resolution and computer resolution of the true color remote sensing image can be improved, so that the application potential of the historical remote sensing data true color image mode is mined, and the application effect of the current situation and the future remote sensing data true color image mode is improved.

The invention designs a set of high-resolution remote sensing image non-permeable surface identification method around measurement restoration of a shadow area on a high-resolution remote sensing image, land type interpretation and refined urban non-permeable surface identification: 1, aiming at the problem that urban non-permeable surface identification has uncertainty due to shadows generated by tall buildings and crowns on the image, the method is provided for the purpose of identifying the urban non-permeable surface; a high-resolution remote sensing image shadow measurement and restoration method oriented to a non-permeable surface is provided, PCA transformation and HIS transformation are introduced to obtain multiple spectral features, recognition measurement of a shadow area is achieved, and restoration of the city shadow area is achieved based on blue band component suppression and HSI space restoration; and secondly, in order to better obtain a city impermeable surface recognition result and analyze the influence of setting of different segmentation factors and parameters on impermeable surface recognition, a multi-decision tree combined classifier is adopted, object-oriented impermeable surface refined recognition is realized, the impermeable surface recognition accuracy is 96.38%, and a powerful guarantee is provided for research and application of the impermeable surface.