56 results about "Scattering rate" patented technology

A reflective star sensor light shield comprises three thin-wall cone barrels, wherein the three thin-wall cone barrels are successively connected. Inner walls of two cone barrels which are far from a lens are smooth clean surfaces and are sprayed with black paint or black films with high reflectivity and a low scattering rate. The inner wall of the cone barrel which is close to the lens is a baffle vane or a barrel type structure of eliminating veiling glare threads and is sprayed with black paint or black films with low reflectivity and the low scattering rate. The whole light shield can possess a optimal length through setting an algebraic relation of cone angles of each cone barrel. The reflective star sensor light shield of the invention has a short length and light weight, and is convenient for processing and manufacturing. The reflective star sensor light shield possesses strong inhibition capability for stray light, such as sunlight and ground gas light, which is a strong light source out of field of view. The invention can be used for the star sensor to shade light and be used for optical remote sensors to explore deep space, such as a star camera and the like.

The invention discloses a 2D / 3D switchable three dimensional display device, which not only includes display panel and 2D / 3D switchable device, but also includes a polymer dispersed liquid crystal PDLC device with adjustable scattered rate, which is equipped between the display panel and the 2D / 3D switchable device. The PDLC device is used to cause the emergent light of display panel to scatter or directly transmit to the 2D / 3D switchable device. In the 2D / 3D switchable three dimensional display device provided by the invention, because the PDLC device could cause the emergent light of display panel to scatter, the Moire fringe produced by mutualinterference between the display panel and the 2D / 3D switchable device can be eliminated.

The invention relates to a produce method of a micro-electromechanical system device, especially electrochemistry deep etching, also to the processing device of the electrochemistry deep etching, belongs to the micro-electronics and micro-electromechanical system techs fields. Above method is adding magnetic field perpendicular to the sample's surface to the classic electrochemistry deep etching device, or the process takes place in a circumstance at -10 deg C up to 15 deg C. the transverse current is limited due to the effect of magnetic field so to avoid the transverse encroachment in the anodizing and collapse on the edge of some certain structure. Controlling the temperature lowers the crystal lattice scattering rate of the dispersing stream particles which makes the etching much more remarkable.

The invention discloses an underwater image enhancement processing method. The method comprises steps of firstly, using the local shade of Gray algorithm to calculate background light of a to-be-processed image; based on an underwater image imaging model, judging whether to add information of a red channel into the dark channel prior by setting a threshold value; meanwhile, by considering the effects of an artificial light source, judging whether an artificial light source exists or not according to the foreground and background brightness of the image, and if the artificial light source exists, adding a saturation degree index and improving the dark channel prior; by use of the relation between the scattering coefficient and the wavelength, estimating the scattering rate, and according to attenuation coefficients of three channels, estimating the attenuation rate; and finally obtaining a restored clear image. According to the invention, disadvantages caused by the fact that the attenuation rates of blue and green channels are assumed to be consistent with each other in the current methods can be overcome; effects caused by the artificial light source, white objects and noise can be effectively avoided; contrast ratio of the image can be effectively enhanced; and a color cast problem caused by inaccurate estimation of the transmittivities of three channels can be well sovled.

An object of the present invention is to provide a heat ray shielding laminated glass which has excellent flatness and adhesion between a glass substrate and a heat ray shielding film unit, and has a reduced glass scattering rate even when the glass substrate is damaged by an external impact, and a manufacturing method therefor.The heat ray shielding laminated glass of the present invention is a heat ray shielding laminated glass which is formed by press bonding of a pair of glass substrates on both surfaces of a heat ray shielding film unit A, which has a heat ray shielding film having at least one heat ray shielding layer on a transparent resin film and at least one adhesive layer, the heat ray shielding laminated glass being characterized in that the heat ray shielding film unit A has an average moisture content 1.0% by mass or less as determined by TG-DTA (simultaneous measurement of thermogravimetry•differential thermal analysis).

The invention discloses a MonteCarlo simulation method suitable for studying scattering of alloy clusters in a ZnMgO / ZnO heterostructure. The method includes the following steps: 1, conducting calculation to obtain a ZnO and Zn1-xMgxO energy band structure, and analyzing a belt approximation by using five energy peaks; 2, conducting fitting to obtain the effective mass of five lowest energy peaks of ZnO and Zn1-xMgxO; 3, obtaining an electron wave function, quantization energy level and electron areal density of the ZnMgO / ZnO heterostructure; 4, building an MC model to simulate the transportation characteristic of the ZnMgO / ZnO heterostructure; 5, calculating the scattering rate of various scattering mechanisms; 6, conducting initialization on the wave vectors of all particles; 7, setting a particle number n and electric field intensity F; 8, making n plus 1; 9, judging the relationship between the particle number and the total number of simulation particles; 10, judging the simulated time is total simulation time or not; 11, calculating the steady-state drift speed of electrons and the electron mobility; 12, drawing a relation graph about the influence of alloy cluster scattering on the electron transportation characteristic. The obtained electron transportation characteristic is more accurate, and a reference is provided for reducing the influence of alloy cluster scattering on the electron transportation characteristic and improving the electron mobility characteristic.

The invention discloses a complex curved surface shape error evaluating method. The method comprises performing interference detection on a complex curved surface to obtain surface shape data; secondly correcting the projection distortion of the surface shape data so that the spatial resolutions of the surface shape data in various direction can be consistent; thirdly, performing Zernike polynomial fitting on the corrected surface shape data to obtain low-frequency errors, according to a Zernike polynomial coefficient Zi, computing a low-frequency evaluating index of EL, wherein Ci represents the weight of every coefficient; fourthly, eliminating the low-frequency errors from the surface shape data, and then filtering out high-frequency errors through high-pass filtering to retaining intermediate-frequency errors; fifthly, evaluating the intermediate-frequency errors through a Slope RMS (root-mean-square) index; sixthly, computing the scattering rate of the high-frequency errors to obtain an evaluating index of the high-frequency errors; seventhly, if any of the three indexes above exceeds preset standards, determining that the surface shape errors of the complex curved surface are unqualified. The complex curved surface shape error evaluating method can effectively guide optical manufacturing production from the angle of imaging quality.

The invention relates to electric charge environment measuring method used in environment scanning electron microscope. It adopts minuteness current test instrument and computer to measure sample current in metal, semiconductor, and insulator, and confirm gas pressure, gas ionization efficiency, ionization saturation, and scattering rate in ESEM sample room. This can evaluate ESEM sample room electric charge environment, optimize its imaging condition including environment and operation parameters, and study charge compensating condition and dynamic balance condition to gain high quality image.

The invention belongs to the technical field of optical radiation measurement and particularly relates to a multichannel liquid transmitting and scattering measuring device and method. The device is formed by arranging N single-channel cylinders in parallel; each single-channel cylinder includes an upper scattering light integration chamber and a lower transmitting light measurement chamber, the two chambers are isolated by an opaque partition and are measured by detectors respectively for the intensities of scattering light and transmitting light; all detectors are connected with external storage module and data processing module to provide remote transmission for measurement data, and transmitting and scattering rates of light of different wavelengths in a water body are measured through multiple channels at the same time; after laser of different wavelengths in each channel enter the cylinders of the measuring device, transmittance intensity of the laser is measured by the transmitting light measurement chamber and scattering intensity of the laser is measured by the scattering light measurement chamber, and therefore, the transmitting and scattering rates of the light of different wavelengths in a water body can be measured through multiple channels at the same time.

The invention discloses a super-junction stress Si / SiGe heterojunction bipolar transistor with a high thermostability. A SiGe virtual substrate structure is adopted by the transistor; and a Si<1-y>Ge<y> secondary collector region, a relaxation Si<1-y>Ge<y> collector region, a stress Si<1-x>Ge<x> base region and a stress Si emitter region are respectively and epitaxially grown on the SiGe virtual substrate structure. According to the transistor, by introducing a super-junction p-type layer parallel to the stress Si<1-x>Ge<x> base region to the relaxation Si<1-y>Ge<y> collector region, the purposes of improving the electric field distribution in a collector junction space-charge region, reducing the peak electronic temperature, inhibiting the impact ionization and improving a device breakdown voltage are achieved; and meanwhile, with the introduction of the super-junction p-type layer, the doping concentration and the phonon scattering rate of the relaxation Si<1-y>Ge<y> collector region are effectively reduced, and the thermal conductivity of the relaxation Si<1-y>Ge<y> collector region is improved; the transistor has the characteristics of large current gain and high breakdown voltage; the internal temperature distribution is significantly reduced, the characteristic frequency and the temperature sensibility are improved, and the high-thermostability work can be realized in a relatively wide working temperature range.

The invention discloses a high strength probe used for optical coherence tomography imaging. The high strength probe comprises a single-mode optical fiber, a grin-lens, a refraction lens, high scattering rate heat shrink tubes, a torque cable, a sealing cap and a protection sleeve. The single-mode optical fiber, the grin-lens and the refraction lens are connected together from left to right in sequence, the left end of the single-mode optical fiber is located in the hollow torque cable, the high scattering rate heat shrink tubes cover the torque cable, the single-mode optical fiber, the grin-lens and the refraction lens from left to right in sequence to form a probe structure, the protection sealing cap is installed at the right end of the probe structure, the probe structure is installed in the protection sleeve, and the torque cable transmits torque generated by an OCT system to the probe structure, so that the probe structure performs rotary motion and displacement translational motion in the protection sleeve.

The invention discloses test equipment and a method thereof used for a non-invasive blood analytical instrument. To be specific, the test equipment comprises a first layer and a second layer. The first layer is used for modulating one kind or multiple kinds of electromagnetic signals sent by the non-invasive blood analytical instrument in a first pre-set manner. The electromagnetic signals includeoptical signals. The second layer is used for processing an electromagnetic signal from the first layer. Accordingly, a real signal absorbing condition of a blood vessel is simulated through a modulation signal received by the blood analytical instrument. In one embodiment, the second layer modulates one kind or multiple kinds of electromagnetic signals from the first layer in a second pre-set manner, wherein at least one layer of the first and second layer modulates one kind of electromagnetic signal. In another embodiment, the first layer scatters different kinds of electromagnetic signalswith different scattering rate. Additionally, the second layer absorbs an electromagnetic signal passing the first layer.

The invention discloses an underwater image sharpening method based on an underwater imaging model and a depth of field. The method comprises steps of: firstly, estimating background light by using alocal shade of Gray algorithm so as to avoid influences of an artificial light sources, a white object and noise; then, determining whether to add the information of a red channel to dark channel priori by setting a threshold; estimating a scattering rate by using the depth of field to obtain better contrast and saturation colors; finally, separately solving the transmittances of the RGB channelsby using a relation among the background light, a scattering coefficient and an attenuation coefficient and finally obtaining a sharpened image. The method of the invention can compensates a defect inconventional methods which supposes that the RGB channels have the same transmittance, enhance the contrast of the image, and can well solve color deviation caused by inaccurately estimated transmittances of the three channels.

The invention discloses an OCT probe used for optical path automatic calibration. The OCT probe used for optical path automatic calibration comprises a grin-lens, one end of the grin-lens is provided with a refraction lens, the other end of the grin-lens is provided with a single-mode optical fiber, the side, far away from the refraction lens, of the refraction lens is provided with a sealing cap, the outside of the single-mode optical fiber is provided with a torque cable, the outsides of the grin-lens and the refraction lens are provided with high scattering rate heat shrink tubes, and the outsides of the high scattering rate heat shrink tubes are provided with protection sleeves. The high scattering rate heat shrink tubes are made of a heat shrinkable material PET, a small amount of optical scattering particles are doped in the PET material, the back scattering rate can be increased, thus the high scattering rate heat shrink tubes form a largest detectable peak of an image strength in an image signal, and the positions of a reference arm and a sample arm zero optical path difference can be easily identified. According to the OCT probe used for optical path automatic calibration, the mechanical strength of the OCT probe is improved, and the possibility that the OCT probe is used for a complex, narrow and curved diseased region is increased.

The invention relates to the security equipment field, especially a security check machine control method. The security check machine prohibited items automatic identification method comprises setting up a database; employing an X ray emitter to emit X ray to vertically irradiate dangerous substance samples; utilizing an X ray detector to collect the ray intensity curve of each dangerous substance sample under the scattering angle less than 20 DEG; matching the ray intensity curve of an inspected item with ray intensity curves in the database; and if matching is successful, giving an alarm and listing corresponding dangerous substance samples according to a successfully matched ray intensity curve. Under X ray low scattering angles, substance scattering rates are strikingly different and characteristics are obvious; according to the feature, the method finds dangerous substances, and automatically gives an alarm to prompt security check personnel, thereby ensuring security check accuracy, and meanwhile avoiding leak detection caused by neglect of duty of the security check personnel.

The invention aims to provide a fumigating insecticide which is low in pollution, enables a user to have visual effective feeling and is high in scattering rate of insecticidal effective components. The fumigating insecticide is characterized by comprising components (A) of insecticidal effective components, components (B) of polyalcohol and components (C), wherein the components (C) are more the one compound selected from a group consisting of ascorbic acid compounds and compounds presented in a formula (c1), and the mass ratio of the components (B) and the components (C) to the components (A) is from 0.5 to 3.5. A fumigating insecticidal device is provided and is characterized by containing the abovementioned fumigating insecticide and having a heating device for heating the fumigating insecticide.

The invention relates to a parameter characterization device and a detection method for the surface defect of the high reflection lens of a laser gyro. The device is composed of an integrating sphere,an integrating sphere detector, a CCD imaging assembly, a semiconductor laser, and a light trap. The CCD imaging assembly is composed of a CCD camera, a microlens, and a shading cylinder. The inner part of the shading cylinder is blackened. A movable top cover is arranged on the integrating sphere. A sample to be detected is clamped between a sample holder and the outer wall opposite to the top cover of the integrating sphere. The CCD imaging assembly is arranged right above the sample to be detected. The laser and the light trap are symmetrically arranged on the two sides of the CCD camera.A detector is arranged on the integrating sphere. According to the parameter characterization device and the detection method for the surface defect of the high reflection lens of a laser gyro, the problems in the prior art that the microscopic scattering detection can only acquire the two-dimensional information of the defects, and the integrated scattering rate measurement is long in detection time and low in detection efficiency are overcame.

The invention aims to provide a fumigating insecticide which is low in pollution, enables a user to have visual effective feeling and is high in scattering rate of insecticidal effective components. The fumigating insecticide is characterized by comprising components (A) of insecticidal effective components, components (B) of polyalcohol and components (C) of solidification agents. Preferably, the components (C) are multi-hole substances and preferably inorganic multi-hole substances. A fumigating insecticidal device is provided and is characterized by containing the abovementioned fumigating insecticide and having a heating device for heating the fumigating insecticide.

The invention discloses a method for identifying the high-temperature tolerance of cotton through temperature increasing and decreasing, and belongs to the field of crop stress resistance identification. According to the method, the environment temperature is controlled through manual simulation, the daily air temperature change trend under natural conditions and the change rule of air temperature between different days in a single high-temperature weather generation process are simulated, and the pollen scattering rate of plants in a material (varieties and strains) sample group serves as an identification index of the high-temperature tolerance of the cotton. The selection efficiency and accuracy can be improved, and the method is particularly suitable for identification of the heat resistance of cotton genetic breeding materials.

The invention provides a display panel and device. The display panel comprises cover plate glass, a first light adjustment layer located on the cover plate glass, and a second light adjustment layer located on the first light adjustment layer, wherein the first light adjustment layer comprises at least two first microstructures; the first microstructures are used for improving the scattering rate of ambient light; the second light adjustment layer comprises at least two mutually spaced second microstructures; the second microstructures are used for increasing the transmittance of the ambient light. The display panel and device provided by the invention can reduce the reflection of the ambient light.

The invention belongs to the technical field of a light source and particularly relates to a post-treatment method of fluorescent powder for a lamp. According to the post-treatment method disclosed by the invention, reactive etching is carried out on the surface of the fluorescent powder by utilizing a mixed solution of ammonium fluoride and other acids so as to fully etch surface defects and passivate the surface. The post-treatment method comprises the specific steps of: etching a fluorescent powder surface by the mixed solution of the ammonium fluoride and the other acids, and filtering and separating out the fluorescent powder from the mixed solution; then respectively washing by de-ionized water and alcohol; and finally, drying and dispersing. The fluorescent powder processed by the post-treatment method disclosed by the invention has good dispersity and transparency. The fluorescent powder is used for preparing a white-light LED (Light Emitting Diode); with the adoption of the fluorescent powder, the back scattering rate can be reduced, and the light removing rate is improved, namely the external quantum efficiency of a device is improved; and the use amount of the fluorescent powder can be saved.

The invention discloses a PMMA light guide plate with double-sided dotted microstructures. The PMMA light guide plate comprises a transparent plate body made of PMMA material. The transparent plate body is provided with a light emergent surface used for light emergence and a reflecting surface opposite to the light emergent surface. The reflecting surface is provided with multiple reflecting bulges which are identical in dimension. The light emergent surface is provided with multiple scattering bulges which are identical in dimension. The reflecting bulges and the scattering bulges are spherical-crown-shaped and arranged in the shape of plum blossoms, and are made of the PMMA material and integrated with the transparent plate body. The basal diameter and the height of the scattering bulges are respectively less than the basal diameter and the height of the reflecting bulges. Light conversion rate can be 80% or more without light guide particles so that conventional laser engraving process production is changed and production cost is reduced; the scattering bulges further scatter the light rays of the light emergent surface and emergent light uniformity can be 85% or more; the scattering bulges and the reflecting bulges and the transparent plate body are made of the same material and are integrated so that loss of the light rays can be avoided; and the scattering bulges and the reflecting bulges are arranged in the shape of plum blossoms so that space utilization rate can be enhanced and reflectivity and scattering rate can be guaranteed.

The invention discloses a discharging device for a grain sowing unmanned aerial vehicle. The discharging device comprises a discharging box body, wherein one end of the discharging box body is provided with a mounting table, the upper end of the mounting table is arranged in a protrusion manner, the other end of the discharging box body is provided with a discharging sliding way, the front end of the mounting table is in communication connection with the discharging sliding way, the rear end of the mounting table is provided with an air inlet opening, and the upper end of the discharging sliding way is opened. Through the way, the invention can provide an auxiliary tool of the agricultural grain sowing unmanned aerial vehicle, through mounting the auxiliary discharging device, the scattering rate and uniformity of the unmanned aerial vehicle are improved, the sowing range is enlarged, meanwhile oriented sowing is performed on grain seeds, air speed during proceeding enters through the air inlet opening to form a pressurized effect, and the condition that the sowing effect is affected due to the fact that the seeds are viscous and centralized cannot be caused.

The invention relates to a measuring device and a measuring method of multiple-parameter distribution and characterization for the surface scattering of a high reflection lens. The device is composedof a semiconductor laser, a CCD imaging system, two integrated scattering rate measuring assemblies, and a light trap. The CCD imaging system comprises a CCD camera and a microlens. A beam switching drum and a backward integrated scattering rate measuring assembly are sequentially arranged on the laser beam incident path. A forward integrated scattering rate measuring assembly is arranged on the reflection path. According to the measuring device and the measuring method of multiple-parameter distribution and characterization for the surface scattering of a high reflection lens, the problem inthe prior art that the defect of the high reflection lens of the laser gyro and the backscatter rate and the forward-scattering rate caused by the defect region cannot be detected at the same time isovercome.

The invention discloses a subsurface scattering calculation method for semitransparent material rendering, and relates to cutting processing and polynomial fitting of brute Monte Carlo photon tracking experiment results so as to accurately represent energy attenuation of subsurface scattering on distance. On the basis, the average free path and the single scattering rate are used for carrying out relation determination on all terms in the multi-term fitting formula, so that calculation and adjustment of the reflection profile are facilitated. And finally, through a new real-time importance sampling scheme, the emergent radiation of any point on the surface of the object is calculated by using a Monte Carlo method, and the importance sampling scheme is also suitable for any other subsurface scattering calculation model. By combining a surface scattering calculation result with other results such as highlight reflection, any semitransparent material object can be accurately and efficiently drawn.

A liquid crystal display device according to an embodiment includes a liquid crystal panel including a plurality of display regions arranged in a first axis direction; a backlight unit below the liquid crystal panel; and a viewing angle adjustment unit between the liquid crystal panel and the backlight unit, wherein the viewing angle adjustment unit includes a viewing angle adjustment sheet that includes a plurality of division regions corresponding to the plurality of display regions, respectively, and the plurality of division regions are individually adjusted in scattering rate according to ON and OFF operation modes.

The invention provides a light guide plate. The light guide plate comprises a substrate, protruding parts are respectively arranged at the upper portions of the two sides of the substrate, the protruding parts and the substrate are integrally formed, one side of each protruding part is arranged in a chamfer angle mode, U-shaped mounting holes are formed in the chamfer angle positions of the protruding parts, grooves are distributed in a rectangular array mode at the bottom of the substrate, the cross section of each groove is in a semicircular mode, a PVC (polyvinyl chloride) adhesive layer is arranged at the bottom of the substrate, and a polymethyl methacrylate granular layer covers the surface of the PVC adhesive layer. The light guide plate is good in material stability, and can enable the light passing rate to be high, improves the scattering rate of light, and guarantees that the light is uniformly distributed after penetrating the light guide plate.

The invention discloses a super-junction stress Si / SiGe heterojunction bipolar transistor with a high thermostability. A SiGe virtual substrate structure is adopted by the transistor; and a Si<1-y>Ge<y> secondary collector region, a relaxation Si<1-y>Ge<y> collector region, a stress Si<1-x>Ge<x> base region and a stress Si emitter region are respectively and epitaxially grown on the SiGe virtual substrate structure. According to the transistor, by introducing a super-junction p-type layer parallel to the stress Si<1-x>Ge<x> base region to the relaxation Si<1-y>Ge<y> collector region, the purposes of improving the electric field distribution in a collector junction space-charge region, reducing the peak electronic temperature, inhibiting the impact ionization and improving a device breakdown voltage are achieved; and meanwhile, with the introduction of the super-junction p-type layer, the doping concentration and the phonon scattering rate of the relaxation Si<1-y>Ge<y> collector region are effectively reduced, and the thermal conductivity of the relaxation Si<1-y>Ge<y> collector region is improved; the transistor has the characteristics of large current gain and high breakdown voltage; the internal temperature distribution is significantly reduced, the characteristic frequency and the temperature sensibility are improved, and the high-thermostability work can be realized in a relatively wide working temperature range.

The invention provides an optimized compressive sensing stepped frequency SAR image restoration and reconstruction method and relates to the field of radar imaging technology. According to the method,after an operation corresponding relation of Kronecker products is utilized to calculate column vectors, column sets in a sensing matrix are updated; then a least square method is adopted to estimatea target signal in a current column set phi, and residual signal vectors are updated till a termination condition is met; and assignment is performed on target scene scattering distribution accordingto an established index position, and then a scattering rate distribution two-dimensional target image can be obtained. Through the method, according to a sparse representation model of a stepped frequency radar echo signal, two-dimensional separability of the sensing matrix and a sparse dictionary is utilized, the method of finding columns in highest correlativity from the sensing matrix is optimized, the demand on storage quantity is lowered, and calculation efficiency is improved.

The invention discloses a MonteCarlo simulation method suitable for studying scattering of alloy clusters in a ZnMgO / ZnO heterostructure. The method includes the following steps: 1, conducting calculation to obtain a ZnO and Zn1-xMgxO energy band structure, and analyzing a belt approximation by using five energy peaks; 2, conducting fitting to obtain the effective mass of five lowest energy peaks of ZnO and Zn1-xMgxO; 3, obtaining an electron wave function, quantization energy level and electron areal density of the ZnMgO / ZnO heterostructure; 4, building an MC model to simulate the transportation characteristic of the ZnMgO / ZnO heterostructure; 5, calculating the scattering rate of various scattering mechanisms; 6, conducting initialization on the wave vectors of all particles; 7, setting a particle number n and electric field intensity F; 8, making n plus 1; 9, judging the relationship between the particle number and the total number of simulation particles; 10, judging the simulated time is total simulation time or not; 11, calculating the steady-state drift speed of electrons and the electron mobility; 12, drawing a relation graph about the influence of alloy cluster scattering on the electron transportation characteristic. The obtained electron transportation characteristic is more accurate, and a reference is provided for reducing the influence of alloy cluster scattering on the electron transportation characteristic and improving the electron mobility characteristic.