10 results about "Reflection function" patented technology

This invention relates to a thin-film device for optical anti-counterfeiting, belonging to the field of anti-counterfeiting thin-film device design. The device includes a substrate layer; a plurality of micro-cylindrical reflective units, each cylindrical with its bottom surface adhered to the substrate layer; a ring-shaped textured area, also ring-shaped, disposed on the surface of the substrate layer and adhered to the side of the micro-cylindrical reflective units, the ring-shaped textured area being filled with a distorted texture corresponding to the source image to be displayed; and a reflective functional layer disposed on the side of the micro-cylindrical reflective units and in the area of ​​the non-ring-shaped textured area on the surface of the substrate layer, to achieve a specular reflection effect. The thin-film device constructed by this invention miniaturizes the macroscopic "cylindrical specular reflection imaging" system, achieving highly concealed information hiding and display on the thin-film device itself—"without the need for an external cylindrical mirror, the thin-film device itself is both a mirror and an image source"—within which information can be hidden and displayed with high concealment.

The present invention discloses a microwave reflection diagnosis method and system for non-uniform plasma sheath distribution based on the multi-peak point phenomenon. The method constructs a non-uniform plasma sheath electron density spatial distribution model by adopting a multi-layer double Gaussian distribution, establishes a reflection function of the plasma sheath using an equivalent transmission matrix, performs multi-Gaussian fitting on the reflection function and extracts key features in the fitting curve, and uses the key features as inputs of a neural network to diagnose the spatial distribution parameters of the plasma sheath. The system is used to implement the method. The present invention not only achieves dimensionality reduction of reflection data, removes redundant information and noise, and improves data processing efficiency through feature extraction technology, but also, by constructing a back-propagation neural network, only needs to focus on the most critical features, reduces training time and computational burden, and improves the accuracy and robustness of prediction results.

The invention discloses an anti-reflection film, a polaroid and a display module, the anti-reflection film comprises a substrate and an anti-reflection function layer arranged on the surface of one side of the substrate, the material of the substrate is a single refraction material, the contact angle between the side, connected with the anti-reflection function layer, of the substrate and water is smaller than 90 degrees, and the refractive index of a first sub-part is larger than that of a second sub-part. According to the application, the single-refraction material is adopted as the material for manufacturing the substrate, so that the refractive indexes of the light rays are the same when the light rays are transmitted in the substrate, and when the single-refraction material is applied to a display, the problem of rainbow patterns existing in the display can be improved, and one side, connected with the anti-reflection functional layer, of the substrate has hydrophilicity; the adhesiveness between the anti-reflection functional layer and the substrate can be improved, so that the optical performance and long-term stability of the anti-reflection film can be improved.

The application belongs to the technical field of mobile traffic prediction, and particularly relates to a cross-domain transfer spatio-temporal integrated network method, comprising the following steps: S1, constructing an integrated learning model, using integrated learning to initially train a basic learner, and combining a spatio-temporal network to capture spatio-temporal features, which is used to overcome the instability and overfitting defects existing in a multi-dimensional spatio-temporal cross-domain environment, wherein the integrated learning model comprises a traffic data set structure, spectral clustering, a long short-term memory (LSTM) and a convolutional neural network (CNN). The application proposes a new transfer learning algorithm, which trains a mobile traffic prediction model from source domain data rich in data, and then migrates the model to a mobile edge network environment with sparse data, so as to improve the prediction accuracy of the model, and at the same time proposes a new transfer mapping framework, that is, learning a reflection function from experience data and optimizing the reflection function to predict when to migrate or how to transfer to obtain the best prediction performance.

This invention proposes a high-flatness filter optimization method based on the synthesis of lossy filter coupling matrices, belonging to the field of wireless communication technology. The method includes the following steps: S1: Constructing the transmission and reflection functions of an Nth-order Chebyshev lossy filter; S2: Solving for the polynomials in the transmission and reflection functions of the Nth-order Chebyshev lossy filter; S3: Constructing the filter Y-parameter matrix based on the polynomials, ultimately obtaining the lossy filter coupling matrix; S4: Defining the passband flatness of the lossy filter coupling matrix; S5: Optimizing the passband flatness of the lossy filter coupling matrix using gradient optimization to obtain a filter coupling matrix with a high-flatness response; S6: Mapping the filter's physical structure parameters based on the high-flatness response filter coupling matrix. This invention, based on the lossy coupling matrix, obtains a passband-flat filter coupling matrix through gradient optimization, which can effectively guide the design of miniaturized high-performance filters.

This invention provides an optical anti-counterfeiting element and an optical anti-counterfeiting product. The optical anti-counterfeiting element includes a substrate; a reflective curved mirror array disposed on the substrate, the reflective curved mirror array having multiple reflective curved mirror units; a pattern microstructure formed on the reflective curved mirror units; a reflective functional layer disposed on the reflective curved mirror array, the reflective curved mirror array sampling and synthesizing the pattern microstructure to form a first pattern feature with a dynamic and three-dimensional effect; at least a portion of the reflective curved mirror units are arranged according to a preset rule in terms of height and / or period to form a second pattern feature containing preset graphic information. This invention solves the problem of difficult manufacturing processes for existing optical anti-counterfeiting elements.

This solution provides a coding metasurface and application with both terahertz wave absorption and reflection functions, including: at least one array-arranged coding unit, each coding unit including a top resonance layer, a dielectric layer and a metal reflection layer arranged in sequence from top to bottom, wherein the top resonance layer includes a graphene resonance layer and a vanadium dioxide phase change layer, the graphene resonance layer includes a square graphene, the vanadium dioxide phase change layer includes a square vanadium dioxide outer ring and a vanadium dioxide strip embedded in the vanadium dioxide outer ring, the vanadium dioxide outer ring is located on the inner side of the graphene, and the square side of the vanadium dioxide outer ring is parallel to the square side of the graphene and is arranged at intervals, wherein the vanadium dioxide strip is arranged at a diagonal position of the vanadium dioxide outer ring and is spaced apart from the vanadium dioxide outer ring, integrating the advantages of the absorbing metasurface and the reflecting coding metasurface, greatly optimizing the signal generation power of 6G communication.

The application discloses a non-reflection lumped parameter filter, which comprises a first port, a second port, a low-pass part and a high-pass part, the low-pass part and / or the high-pass part is fused with a resonator; the first port is a signal input port, the second port is a signal output port, one port of the low-pass part and one port of the high-pass part are connected with the first port, the other port of the low-pass part is connected with the second port, the other port of the high-pass part is connected with a resistor, and the other end of the resistor is grounded; when working in a passband, the low-pass part signal is conducted, the high-pass part signal is not conducted, the signal is input from the first port, and all the signal is transmitted to the second port by the low-pass part; when working in a stopband, the low-pass part signal is not conducted, the high-pass part signal is conducted, the signal is input from the first port, when the signal is transmitted to the low-pass part, all the signal is reflected back, the reflected wave is transmitted to the resistor through the high-pass part, and all the reflected wave is absorbed by the resistor. The application can realize good non-reflection function.

The present invention relates to a high-brightness metal screen device for a projector having a 3D function, having an optical property of scattering and reflecting only image light incident from the projector to a front visible region at a set angle, the high-brightness metal screen device for 3D comprising: a reflective panel part for reflecting the image light incident from the projector to the front visible region; a lens which is formed in a panel shape using a metal material having optical characteristics of scattering and reflecting functions, the front surface of which has a spherical surface that is concave rearward, and the rear surface of which has a spherical surface that is convex rearward; and a plurality of metal crystal concavo-convex parts protruding from the front surface of the reflective panel part, having a set surface roughness (Ra), and scattering and reflecting light irradiated from the projector to the set viewing region at a set angle.

The invention provides a self-adaptive fast two-dimensional angle super-resolution method for a real aperture phased array radar, and relates to the field of real aperture radar super-resolution imaging. The method comprises the following steps: modeling azimuth and pitching two-dimensional echoes into convolution of a two-dimensional antenna beam along azimuth and pitching sampling sequence and a target reflection function along azimuth and pitching sampling sequence; under a regularization framework, introducing azimuth and pitching two-dimensional sparse constraints of a target, and converting a deconvolution problem into a parameter estimation problem under the regularization framework; and directly solving a two-dimensional inversion problem by adopting an efficient solving method and a two-dimensional rapid iteration threshold shrinkage algorithm. The method solves the problems that a traditional regularization method is low in processing speed and cannot achieve rapid and effective high-resolution imaging. And the real-time performance of the two-dimensional angle super-resolution is greatly improved.