159 results about "Scattering function" patented technology

A light-emitting device is provided in which a plurality of thin films including a light-emitting layer are stacked. The light-emitting device includes a waveform structure having a directive scattering function in one interface between the thin films.

An embodiment of the invention provides a display panel and a display device. The absorption and scattering functions of an organic film layer in the light ray propagation process are reduced throughthinning treatment of a partial area of the thicker organic film layer of the display panel, the effective transmission rate on the display panel is increased, and loss and crosstalk of light ray signals after light rays pass by an organic film in the fingerprint recognition process are reduced, so that the sensitivity and the recognition accuracy of light-sensing fingerprint recognition are improved.

The present application discloses a new technique which reduces the dimensionality of a feature model by re-use of data that has been obtained by a prior measurement. The data re-used from the prior measurement may range from parameters, such as geometrical dimensions, to more complex data that describe the electromagnetic scattering function of an underlying layer (for example, a local solution of the electric field properties).

The invention provides a signal processing method for improving a background subtraction technology in different-place continuous calibration RCS (Radar Cross-Section) measurement. The method comprises the following steps: step 1, measuring test field background return SBC (f, t1) containing a calibration bracket at time t1; step 2, installing a calibration object and measuring calibration object return SC (f, t2) at time t2; step 3, measuring test field background return SBT (f, t3) containing a target bracket at time t3; step 4, installing a target and measuring target return ST (f, t4) at time t4; step 5, extracting time-varying transmission function parameters and carrying out amplitude-phase correction, background phase subtraction and target RCS calibration treatment. Different from traditional RCS measurement and calibration treatment model, the novel model disclosed by the invention provides a new theoretical basis for RCS measurement and calibration treatment and has the following advantages that a concept of a target wide-band plural scattering function is introduced to guide a process of determining test and treatment, form background clutter extraction and precise background subtraction treatment method and algorithm, and analyze main factors which affect uncertainty of an external field test. Besides, the method has universality.

A new and useful method and system for correcting for ghost images in a telecentric optical system is provided. Ghost images generated from planar optical surfaces in the image space after the major elements of a telecentric optical system are shift invariant. In other words the ghost images produced by these optical elements do not change their shape with different field angles or points. The ghost image's invariance with field position will allow the ghost image to be subtracted or removed from the image of an object recorded on a digital detector such as CCD or CMOS detector when its optical system is telecentric in image space. This subtraction may be accomplished, for example, with a removal technique using a measured ghost function germane and invariant to that particular optical system. The combination of the ghost image and scatter functions is linearly shift invariant and therefore, both noise contributions could be removed from the resulting digital image using similar removal techniques.

The invention discloses a method of realizing high-resolution imaging of a forwarding looking radar. The method uses the least squares to address the problem that a matrix is not a square matrix of a radiation pattern, uses the truncated singular value decomposition method to suppress amplification of noise, resolves the estimation amount of an object scattering function, and realizes high-resolution imaging of forward looking scanning radar direction. According to the application, the method is fully aware of the problem of possible information loss in the presence of an object on an edge in traditional tsvd processing method which decomposes on the basis of a matrix truncated singular value and then resolves an inversion. According to the application, the method addresses the problem that a matrix is not a square matrix of a radiation pattern, and by using least squares, obviates the need for processing an original matrix, resolves an error minimum resolution by 2-nom minimization, saves edge information, and resolves the estimation amount of the object scattering function; the method analyzes and solves too loud noise in the process of resolving the estimation amount, and uses the truncated singular value decomposition method to suppress the amplification of the noise, such that the method realizes high-resolution imaging of the forward looking scanning radar.

The invention discloses an array substrate, an electroluminescence display panel and a display device. With arrangement of an optical regulating structure, interference of light emitted from two adjacent pixel areas can be avoided effectively, a pixel limit structure can be quite thin, and thus area occupation of the pixel limit structure is reduced, while pixel density is increased correspondingly and display resolution ratio is improved. Besides, as the optical regulating structure has reflecting and scattering functions, the brightness of a display can be increased while the light utilization rate is increased, and accordingly image display quality can be improved effectively.

The invention discloses a sounding laser full-waveform data-based diffuse attenuation coefficient extraction method and system. The method comprises the following steps: filtering to obtain effective laser sounding points from full-waveform data in sounding laser data; extracting emission intensity and echo intensity of each effective laser sounding point obtained by filtering from the full-waveform data, and after extracting the echo intensity, generating a water body back scattering function corresponding to a water body back scattering waveform according to an algorithm; selecting a plurality of time point pairs with a preset time interval from the water body back scattering function corresponding a single laser sounding point, and calculating an initial diffuse attenuation coefficient of each time point pair; taking an average value of the initial diffuse attenuation coefficients of all the time point pairs as a final diffuse attenuation coefficient of the laser sounding points. According to the invention, the diffuse attenuation coefficient value can be calculated by using the full-waveform data of the single sounding points, and echo intensity information and a depth value of each sounding point do not need to be acquired, the calculation accuracy of the diffuse attenuation coefficient is high.

The invention discloses a self-adapting enhancement method of an underwater degraded image in the technical field of image processing. The method comprises the steps that a single underwater color image is collected, logarithm transformation is firstly carried out on an input image, then local contrast enhancement processing is carried out on the image obtained after logarithm transformation based on the human eye visual characteristic, and meanwhile illumination estimation is carried out on the image obtained after logarithm transformation through Gaussian homomorphic filtering with a weight; the image obtained after illumination estimation is subtracted by the image obtained after local contrast enhancement; finally, on the basis of analyzing all channel histograms of a deblurred image, color correction and restoration are carried out on the image obtained after multi-scale Retinex enhancement through a color gradation quantization algorithm of the histograms. Image burring caused by the water absorption and particle matter scattering function can be removed well, and the interference of water colors on the color of the image can be removed well.

The invention discloses a circular building sand screening device, and relates to the technical field of building machines. The circular building sand screening device comprises a supporting bottom plate, and a transverse packing auger driven by a motor I is horizontally and fixedly mounted on the supporting frame. A dispersing barrel communicating with the transverse packing auger through a discharging pipe is arranged below the transverse packing auger. A conveying belt mounted on a supporting table is arranged below a horizontal screen, and a longitudinal packing auger driven by a motor IIis fixedly mounted on the supporting table. A lifting inlet communicating with the dispersing barrel is formed in the lower right side wall of the longitudinal packing auger, and a circulating pipe ismounted between the upper right side wall of the longitudinal packing auger and the transverse packing auger in a communicating manner. According to the circular building sand screening device, sandcan be screened through the horizontal screen and an inclined screen and passes. By means of conveying of the transverse packing auger and the longitudinal packing auger, on one hand, the scattering function on the sand is improved, the mobility of the sand during screening is improved, and the screening effect is improved; and on the other hand, repeated and circular screening of the sand can beachieved, screening can be more sufficient and thorough, and the screening quality of the sand is improved.

A production method for an electromagnetic wave shielding laminate comprising the step of forming a geometric-form electromagnetic wave shielding material on a releasable support, and the steps of separating the electromagnetic wave shielding material from the releasable support and transferring it onto a transfer support formed of at least one function layer provided on one or both surfaces thereof with at least one function of conductivity, anti-reflection function, reflection-reducing function, hard-coat property, anti-glare function, anti-staining function, near infrared ray absorbing function, ultraviolet ray absorbing function, color correcting function, radiating function, Ne cutting function, anti-scattering function, and shock relieving function.

An apparatus and method permits measuring of near-direct forward scattering functions in water to enable acceptable underwater imaging for detection, classification, and identification of objects, such as mines. A source of light mounted on a housing member receiving ambient water emits a beam of light along an axis to a scattering detector assembly mounted on the base member. The detector assembly has a central active region disposed in the axis to receive portions of the light beam emitted along the axis and a plurality of concentric active regions are located radially outwardly from the central active region and the axis to receive scattered portions of the light beam. The central and concentric active regions provide signals representative of the magnitudes of the axial and scattered portions of the light beam for determination of the scattering function of the ambient water.

The invention discloses a double calibration treatment method based on a minimum weighted mean square error. According to the method, a minimum weighted mean square error (MWMSE) function for RCS double calibration measurement and treatment is defined; different weight factors are selected according to the same error function, and the weighted mean square error is minimized to meet different application requirements; when the weight factor averagely takes 1 which is namely the mean weight, the results can minimize the absolute error of RCS measurement calibration; when the weight factor takes the formula shown in the description (wi is the weight factor of the ith calibration body, the function in the absolute value sign in the formula shown in the description is the theoretical scattering function of the ith calibration body, and N is the number of measurement frequency points), the optimization results minimize the relative error of RCS measurement calibration; and for the RCS measurement of low-detectivity targets, the RCS level of the calibration body generally adopted is higher than the target RCS level in order to guarantee a sufficiently-high signal to clutter ratio. Under such conditions, the criterion of relative error minimum is beneficial for reducing the calibration error and improving the RCS measurement calibration precision.

A method for constructing a data structure of a proximate particle search is executed by a GPU, and computes a simulation of a physical object by converting three-dimensional digital image data to two-dimensional digital image data. The memory for a bucket is composed of buckets for dividing a memory space that is created in accordance with a space in which the physical object occurs. A writing step is provided in which a scattering function (GPU: vertex shader) is used by the GPU to read a particle coordinate and the particle number of a particle stored in the bucket and write the particle coordinate and the particle number to a two-dimensional image space.

The invention discloses anti-ultraviolet self-cleaning water scattering vehicle glass water which comprises the following raw materials in percentage by weight: 97.49-99.48 percent of water, 0.3-0.8 percent of coconut oil diethanolamide, 0.01-2 percent of nano titania and 0.01-0.05 percent of a corrosion inhibitor, and the sum of the percentages by weight of all the components is 100 percent. The anti-ultraviolet self-cleaning water scattering vehicle glass water disclosed by the invention not only has self-cleaning, antibacterial and deodorant functions, but also has an anti-ultraviolet function and a water scattering function.

A CT system includes a rotatable gantry having an opening to receive an object to be scanned, an x-ray source configured to project an x-ray beam toward the object having a primary intensity, a detector configured to detect high frequency electromagnetic energy passing through the object and output imaging data, and a data acquisition system (DAS) connected to the detector and configured to receive the imaging data. The system also includes a computer programmed to obtain image projection data of the object from the DAS, correct the projection data using a scatter function that is based at least on a known characteristic of the x-ray beam, and generate images using the corrected projection data.

The invention relates to a full-automatic barbecue machine with the function of turning over and spreading materials, which includes a box body, on which a fixed block a and a fixed block b are arranged, and the box body is sequentially provided with a partition a and a partition b from top to bottom , partition a and partition b divide the box from top to bottom into condiment box, barbecue box and heating box; the upper end of fixed block a is provided with a rotating motor, and the output shaft of the rotating motor is connected with a rotating rod a, which a is fixedly connected with a gear a, the end of the rotating rod a away from the rotating motor is movably connected with the bearing a at the lower end of the fixed block b; One end is connected with gear b, gear a meshes with gear b, and the left side of the barbecue frame is movably connected with bearing b through a roller; inside the condiment box, there are various lower ends running through the partition a and extending to the inner cavity of the barbecue box to connect with The condiment tank of the discharge plate; the invention has high grilling efficiency, uniform distribution of condiments, uniform heating of grilled skewers, good taste, and less oil fume inhaled by human body.

The invention provides a synchronous prediction method for horizontal fractures and vertical fractures of an orthogonal medium fracture type reservoir. The method comprises steps of firstly, expressing an orthotropic disturbance matrix by utilizing longitudinal and transverse wave moduli and fracture weakness; secondly, deriving an orthogonal medium linearized longitudinal wave reflection coefficient equation represented by longitudinal and transverse wave moduli, density and crack weakness by utilizing a scattering function and a disturbance matrix; and lastly, expressing the linearized longitudinal wave reflection coefficient as a Fourier series expression, and establishing a three-step inversion method to estimate longitudinal and transverse wave moduli, density and fracture weakness, and thereby realizing multi-parameter inversion of the orthotropic medium. The method is advantaged in that on the basis of a Scheenberg linear sliding model, that crack weakness with more definite physical significance is directly used for representing the development conditions of horizontal cracks and vertical cracks in an orthogonal medium is proposed; an orthogonal medium longitudinal wave reflection coefficient equation is expressed as a Fourier series form, and crosstalk influence of crack weakness caused by horizontal cracks and crack weakness caused by vertical cracks is reduced.

The invention relates to a direct illumination type light guide plate of light-emitting diode (LED) backlight. The direct illumination type light guide plate of the LED backlight has double functions of diffusion and light guide and has the following essential characteristic that: a plurality of concave parts are formed on the top of the inner part of the direct illumination type light guide plate; and dots are formed at the bottom of the direct illumination type light guide plate. Light emitted by direct illumination type LED encapsulation passes through the bottom, enters the direct illumination type light guide plate and irradiates on the side faces of the concave parts; the side faces of the concave parts change the propagation direction of the light, so that the light is propagated in the direct illumination type light guide plate along the direction parallel to the light emitting surface of the direct illumination type light guide plate; and the dots reflects the light on the dots to the top of the direct illumination type light guide plate, therefore, the light guide plate is named as the direct illumination type light guide plate. The direct illumination type light guide plate is doped with light scattering particles, so the direct illumination type light guide plate has the scattering function at the same time. When a light emitting component of the direct illumination type light guide plate is adopted, the advantages of the direct illumination type light emitting component and a side light type light emitting component are achieved and the defects of the direct illumination type light emitting component and the side light type light emitting component are overcome.

The invention relates to a laser welding plume control and molten bath protection method and device, and belongs to the field of welding. Laser beams generated by a laser device are focused to act on a workpiece, a deep molten small hole and a molten bath are formed; an inner pipe of a double-layer spraying nozzle is placed above a small hole opening and is connected with an air exhauster to enable a stable negative pressure state to be formed at a zone of the small hole opening, and plume sprayed out from the hole quickly escapes out through air exhausting of the inner pipe; and an outer pipe of the double-layer spraying nozzle is arranged above the molten bath, and protective gas is led in for protecting the welding molten bath. According to the laser welding, the negative pressure in the spraying nozzle controls the plume, and the protective gas is led into the outer pipe for protecting the welding molten bath. By means of the local negative pressure environment above the small hole opening, the absorbing and scattering functions of the plume on lasers can be thoroughly avoided, a better transmission channel is provided with the laser beams, the lasers are sufficiently focused on the welding workpiece, and the laser energy using rate is greatly improved; according to the inner pipe of the spraying nozzle, after disturbance of the plume on protective gas flow is removed, the welding molten bath can be better protected by the outer pipe of the spraying nozzle.

The invention relates to an air deflector and a wall-mounted type air conditioner indoor unit with the air deflector. The air deflector comprises a deflector body. The deflector body is provided with a windward side edge and an air outlet side edge. The projection of the air outlet side edge in the horizontal plane is a first zigzag line which extends in the length direction of the deflector body, so that the air outlet side of the deflector body is provided with multiple gaps which are arranged at intervals and/or protruding portions which are arranged at intervals. The invention further provides the wall-mounted type air conditioner indoor unit with the air deflector. According to the air deflector, because the air outlet side edge of the deflector body is provided with the gaps and the protruding portions, the horizontal width of the air outlet side of the deflector body is uneven, the air deflector can swing and scatter air when the air conditioner discharges air and change the flowing direction of the air in the air outlet process, the discharged air blows in different directions through the zigzag structure, and therefore the air outlet range can be expanded; and meanwhile, the discharged air cannot directly blow to a user, the air can flow more softly through the air scattering function of the air deflector, and the user experience is improved.

The invention discloses a method for simulating light scattering property of ice crystal particle. By the method, the problem that bubbles and impurity in the ice crystal particle in the prior art arenot considered to cause insufficient inversion accuracy. The method comprises the steps of building an ice crystal particle model; randomly adding a bubble and/or impurity model in the model, and adjusting conductivity and refractive index of the bubble and impurity model; calculating a scattering function and a scattering matrix by an approximate optical approximation method scattering program;calculating radiation values of an absorption channel and a non-absorption channel of a satellite sensor, cloud optical thickness and ice cloud particle effective radius by a RSTAR radiation transmission mode; building a lookup table according to the radiation values of the absorption channel and the non-absorption channel, the cloud optical thickness, the ice cloud particle effective radius and the ice cloud particle effective radius; and calculating the cloud optical thickness and cloud particle effective radius according to the radiation values observed by satellite and according to the lookup table. By the method, the inversion accuracy of the cloud particle effective particle and the cloud optical thickness is remarkably improved.