56 results about "Scattering rate" patented technology

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.

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 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 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 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 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 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 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.