183results about How to "Effective convergence" patented technology

To provide a directional screen which can efficiently converge light from a projector on an observer and which is hardly affected by external light. That is, multiple transparent protrusion structures are formed on a base material, and a light absorbing layer communicating in the vertical direction of each of the protrusion structures is provided. The formation of a recess structure or a through-hole exerts an effect similar to that of a protrusion structure. Alternatively, fibrous protrusions each having a high light reflectance are used as the protrusion structures, and are densely formed on the base material while they -are slanted in the direction of external light.

A light source arrangement for substantially enhaning the lighting intensity of the light beams emitted from the light source therefore includes a lens body and an illumination unit. The lens body has an illumination portion defining a light projecting surface and at least a diffraction portion defining a light diffraction surface inclinedly extended at a diffraction angle, wherein a diffraction density of the illumination portion is different from that of the diffraction portion. The illumination unit is covered by the lens body for radially generating light towards the illumination portion. When the light reaches the light diffraction surface of a diffraction portion at an angle larger than the diffraction angle, the light is substantially reflected at the light diffraction surface back towards the light projecting surface, such that the light from the illumination unit is converged to project at the light projecting surface of the lens body.

A system designs a thin and relatively flat microwave focusing lens that can produce multiple simultaneous beams, using readily-available isotropic dielectric materials, and having a gradient-index (GRIN) profile. The design optimizes the lens to achieve beam scanning and / or multiple beams over a wide field of regard (FOR) with broad bandwidth and a very short focal length compared with conventional lenses. The lens can be used individually or as an element in a more complex antenna having multiple lenses in various orientations that are independently switched, selected and / or excited simultaneously as elements in a phased array. The antenna terminal incorporates such lens into an array of lenses along with one or more feeds to produce single or multiple beams covering a broad field of regard for such applications as satellite communications on-the-move, cellular, broadband point-point or point-multipoint and other terrestrial or satellite communications systems. The lens and array design support multiple simultaneous independently steerable beams as well as null placement for interference cancellation.

The method comprises: the user supporting P2P requests the route system to get the first request message of first file downloaded by the first client side; determining the network autonomous system of first client side; RRS searches a edge server ES-P that saves the first file and supports P2P in the network autonomous system, and returns at least on ES-P address saving the first file to the first client side; according to the request for downloading the first file from client side and the correlated relation between the client side and the first file saved in the ES-P, said ES-P returns the information about other client side that are downloading the first file.

A method and apparatus for assigning nodes to CMTS cards in a communication system. In order to avoid bottlenecks and to efficiently use resources of the cards in a hybrid fiber-coax architecture, the nodes are assigned to the cards using linear programming techniques so as to distribute the traffic load and minimize the unused capacity of each card. The number of households, nodes and cards are determined and used to establish a model which is then implemented using linear programming techniques to determine an optimal solution.

Each intralayer lens disposed between a color filter 120 and photoelectric conversion sections has a Fresnel lens structure composed of a center lens 132 and an annular lens 134. As a result, the thickness of the intralayer lenses is reduced, and positions of upper lenses can be lowered without having to reduce the thickness of a color filter.

In a non-magnetic material layer, a concave portion is formed above a groove G. In addition, an auxiliary magnetic pole layer is formed having a convex portion which extends in the direction toward a main magnetic pole layer and which is placed in the concave portion. Accordingly, since a magnetic flux B passing in a perpendicular magnetic recording head from the main magnetic pole layer to the auxiliary magnetic pole layer is generated, an appropriate adjustment of the intensity of a magnetic field A generated from the main magnetic pole layer can be easily performed, and the edge of a recording track on a recording medium M can be clearly defined.

An optical imaging lens including an aperture stop, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element arranged in sequence from an object side to an image side along an optical axis is provided. Each lens element includes an object-side surface and an image-side surface. The material of the first lens element is plastic. The object-side surface of the second lens element has a concave portion in a vicinity of the optical axis. The image-side surface of the second lens element has a concave portion in a vicinity of a periphery of the second lens element. The object-side surface of the third lens element has a concave portion in a vicinity of a periphery of the third lens element. The image-side surface of the third lens element has a concave portion in a vicinity of the optical axis. The fourth lens element has positive refractive power. The image-side surface of the fifth lens element has a convex portion in a vicinity of the optical axis. The material of the sixth lens element is plastic.

A solid-state image pickup element comprises: a semiconductor substrate; a photoelectric converting portion formed in the semiconductor substrate; a reflective material portion comprising a hole portion wherein the hole portion is located on a surface, on an area in which the photoelectric converting portion is formed, of the semiconductor substrate, the reflective material portion being formed so as to cover a surface of the semiconductor substrate; and an optical waveguide that propagates incident light while confining the light, to guide the light to the photoelectric converting portion, wherein the optical waveguide is configured by a transparent film formed in the hole portion, the transparent film having a light guiding function.

The invention discloses an organic light-emitting display panel and a manufacturing method of the organic light-emitting display panel. The organic light-emitting display panel comprises an upper substrate, a first electrode layer, an organic light-emitting layer, a second electrode layer and a lower substrate, which are sequentially arranged, wherein a refraction layer is arranged on one side, deviating from the organic light-emitting layer, of the first electrode layer and comprises a plurality of convex bodies; each convex body is provided with a sharp corner, and the sharp corner faces the side deviating from the organic light-emitting layer. According to the technical scheme, through the refraction layer with the convex bodies, light emitted by the organic light-emitting layer can be effectively converged, and parallel light is formed within scope of each view angle, so that color offset of view angles is reduced.

In a non-magnetic material layer, a concave portion is formed above a groove G. In addition, an auxiliary magnetic pole layer is formed having a convex portion which extends in the direction toward a main magnetic pole layer and which is placed in the concave portion. Accordingly, since a magnetic flux B passing in a perpendicular magnetic recording head from the main magnetic pole layer to the auxiliary magnetic pole layer is generated, an appropriate adjustment of the intensity of a magnetic field A generated from the main magnetic pole layer can be easily performed, and the edge of a recording track on a recording medium M can be clearly defined.

The invention discloses an air cathode-based miniature direct formic acid fuel cell. A seal washer is respectively arranged inside an anode collector plate and a cathode collector plate; a membrane electrode is arranged between the two seal washers; one side, positioned on the cathode collector plate, of the membrane electrode is provided with a cathode gas diffusion layer; one side, positioned on the anode collector plate, of the membrane electrode is provided with an anode diffusion layer; an end plate is arranged outside the anode collector plate; a liquid storage cavity is reserved between the anode collector plate and the end plate; and a seal washer is arranged between the anode collector plate and the liquid storage cavity as well as between the liquid storage cavity and the end plate. In the cell, formic acid serves as a fuel; a proton exchange membrane on which a catalyst is sprayed serves as the membrane electrode; an air electrode is adopted directly; the structure is simple; the cell is convenient to detach; cell weight is reduced; reaction heat is collected effectively; the volatilization of the formic acid is reduced by a relatively closed system; and different discharge requirements of equipment on a power supply can be met by adopting different catalysts.

The invention discloses a dynamic distribution Web resource management method and a system based on a content center network. The method comprises the following steps: (1) an nWeb client transmits a request; (2) an nWeb router forwards the request through an output port matched with a forwarding route table; (3) an nWeb server executes the request, and transmits a stored information change notification selectively; (4) the nWeb router feeds back a response result, and selectively updates the forwarding route table; (5) the nWeb client outputs a response. The system comprises a service request transmitting unit, a service request routing unit, a service request processing unit, a response result routing unit and a response result output unit. By adopting the dynamic distribution web resource management method and system, Web resources which are distributed dynamically can be effectively found and converged on a new network framework according to hierarchical semantics, data source-crossing ordered storage and networked caching of Web resources are realized, and the sharing and managing capabilities specific to massive Web resources in a dynamical distribution network environment are enhanced.

The invention discloses a social media graph representation model-based social risk event extraction method. The method comprises the following steps of 1) modeling an event by adopting an HCCG model, defining an entity relationship generation rule, describing event attributes, and performing multi-granularity extraction on the event by utilizing word-level and stream-level contexts; 2) performing similarity calculation by utilizing an information quantity ratio of a maximum common subgraph and a minimum common hypergraph according to an HCCG graph of the extracted event; 3) performing incremental clustering on HCCG through context information of social media, and gradually highlighting event elements of news in a clustering process; and 4) performing event judgment through an HCCG model-based clustering result, and judging whether the clustering result is a true event or not. According to the method, dispersed social media information can be effectively collected; intermediate and final event detection results are expressed in a multi-granularity manner visually by using an entity relationship model; and compared with a conventional social media event extraction method, the social media graph representation model-based social risk event extraction method has better generalization application capability and higher accuracy.

A system and method for object tracking using probabilistic mode-based multi-hypothesis tracking (MHT) provides for robust and computationally efficient tracking of moving objects such as heads and faces in complex environments. A mode-based multi-hypothesis tracker uses modes that are local maximums which are refined from initial samples in a parametric state space. Because the modes are highly representative, the mode-based multi-hypothesis tracker effectively models non-linear probabilistic distributions using a small number of hypotheses. Real-time tracking performance is achieved by using a parametric causal contour model to refine initial contours to nearby modes. In addition, one common drawback of conventional MHT schemes, i.e., producing only maximum likelihood estimates instead of a desired posterior probability distribution, is addressed by introducing an importance sampling framework into MHT, and estimating the posterior probability distribution from the importance function.

The invention provides a shooting lens and a module thereof, and a terminal. The lens successively comprises from an object side to an image side: a first lens with positive focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with focal power, a fifth lens with positive focal power, a sixth lens with focal power, wherein object side surface of the second lens is a convex surface, the image side surface of the fifth lens is a convex surface, and the part, which is near to an axis, of the image side surface of the sixth lens is a recessed surface. The shooting lens satisfies the following: 5.5<f1.2.3 / Dr1r6<10, wherein the f1.2.3 is the combination focal length of the first lens, the second lens and the third lens, and the Dr1r6 is the interval from the objet side surface of the first lens to the image side surface of the third lens on an optical axis. According to the invention, six plastic aspheric eyeglasses are employed, through different focal power distribution, it is ensured that under large-caliber configuration, the volume of the lens is effectively shortened, the influences of image differences are reduced, and the imaging quality of the lens is improved.

The invention aims to converge predistortion coefficients efficiently in a predistorter adapted to compensate for distortion generated in an amplifier. Level detection means detects the level of a signal input to an amplifier. Signal acquisition means acquire a signal output from the amplifier as a feedback signal. Correspondence acquisition means updates a predistortion coefficient expressed using a set of orthogonal polynomials so that a distortion component contained in the acquired feedback signal is reduced and acquires a correspondence between the level of the signal input to the amplifier and a control coefficient for predistortion (contents of a distortion compensation table). Predistortion executing means applies distortion for predistortion with respect to the signal input to the amplifier in accordance with the control coefficient for predistortion that corresponds to the detected level based on the acquired correspondence.

In order to solve problems that a conventional laser radar ranging system is low in measurement precision and is poor in anti-interference performance, the invention provides a laser radar ranging system and method based on carrier modulation, wherein the system and method are high in measurement precision, and are good in anti-interference performance. The system comprises a control circuit, a power supply, a detection device, and an optical system. The control circuit comprises a main processor and a light source drive circuit. The main processor is connected with the light source drive circuit and the detection device. The main processor is used for outputting a pseudo-random code sequence. The light source drive circuit employs the pseudo-random code sequence to carry out the low-frequency carrier modulation of an optical signal emitted by a light source. The optical system is used for projecting the optical signal emitted by the light source to a to-be-detected target, gathering the echo signal reflected by the to-be-detected target and projecting the echo signal to the detection device. The detection device carries out the sampling, difference amplifying and A / D conversion of the received echo signal, and outputting a digital signal. The main processor calculates the phase according to the digital signal, and obtains the distance information of the to-be-detected target.

A method for enforcing physical access control and logical access control may include: (i) controlling access of a person to a physical location based on a physical access credential associated with the person provided to a physical access control system; (ii) controlling access of the person to an information system and an enterprise service based on a logical access credential associated with the person provided to a logical access control system; (iii) receiving information from the physical access control system regarding the physical access credential; (iv) receiving information from the logical access control system regarding the logical access credential; (v) determining an approximate location of the person based on the physical access credential and the logical access credential; and (vi) blocking unauthorized access between the physical access control system and the logical access control system by a first firewall.

A solid-state image pickup element comprises: a semiconductor substrate; a photoelectric converting portion formed in the semiconductor substrate; a reflective material portion comprising a hole portion wherein the hole portion is located on a surface, on an area in which the photoelectric converting portion is formed, of the semiconductor substrate, the reflective material portion being formed so as to cover a surface of the semiconductor substrate; and an optical waveguide that propagates incident light while confining the light, to guide the light to the photoelectric converting portion, wherein the optical waveguide is configured by a transparent film formed in the hole portion, the transparent film having a light guiding function.

A solar cell component comprises an upper encapsulation body, a first electric conduction structure, a solar cell, a second electric conduction structure and a lower encapsulation body, the solar cell comprises a plurality of parallel strip-shaped solar cell units, and front electrodes of the solar cell units comprise a plurality of parallel electrodes covering part of light entering faces of the solar cell units. Preferably, the solar cell units are inserted in a plurality of parallel strip-shaped grooves of the upper encapsulation body and / or the lower encapsulation body; the first electric conduction structure comprises at least one electric conduction bar, the first electric conduction structure is contacted with the front electrodes of the solar cell unit; the second electric conduction structure comprises at least one second electric conduction bar and is arrayed with the first electric conduction structure in a staggering mode; and a surface of the upper encapsulation body is provided with a light ray adjusting structure. Correspondingly, the invention further provides a manufacturing method of the solar cell component. The solar cell component has the advantages of being low in cost, material-saving, simple in process, and high in transferring efficiency.

The invention relates to a light guide plate, which comprises a light incident surface, a light emergent surface connected with the light incident surface and a reflecting surface relative to the light emergent surface, wherein at least one surface of the light emergent surface and the reflecting surface is provided with a plurality of microstructures; the plurality of microstructures extend along a direction facing to the light incident surface from one side away from the light incident surface; and the extending directions of the plurality of microstructures are gradually changed into arc lines intertwined with one another from parallel straight lines. The invention also provides a backlight module using the light guide plate. The backlight module has the advantages of uniform luminance and good optical effect.

In order to solve a problem that a traditional speed measurement and range finding system is poor in resisting influence, the invention provides a speed measurement and range finding system and method based on laser heterodyne detection. The speed measurement and range finding system comprises a laser, an optical path emission assembly, an optical reception assembly, a processor, a beam splitter, a beam combiner and a focal plane array detector; the input terminal of the beam splitter is connected to the output terminal of the laser; in two paths of optical signals which are split by the beam splitter, one path of optical signals is sent to an optical path emission assembly and is projected to a target object to be measured, and the other path of optical signals is sent into the beam combiner; the optical path reception assembly receives echo signals and converges the echo signals on an input terminal of the beam combiner after filtering; the beam combiner is used for performing coherent mixing on one path of optical signals which is split by the beam splitter and the echo signals to obtain a difference frequency signal; the focal plane array detector performs sampling, processing and analog to digital conversion on the difference frequency signal and then transmits the difference frequency signal to a processor; and the processor obtains speed and distance information of the target object to be measured.

The invention discloses a power grid flow solvability identification and initial value generating method based on continuous power flow. A convergent solution is obtained by adopting flat starting Newton method load flow calculation and lowering power grid power levels, and continuous power flow calculation is carried out with the convergent solution as an initial state to obtain ground state load flow calculation initial values approaching to a true value better; if a ground state level is reached, it is showed that the power grid flow is solvable, the voltage amplitude value and the phase angle obtained at the moment serve as the initial values, and Newton method load flow calculation is carried out under the ground state to obtain the convergent solution; if the ground state level is not reached, whether a PV curve reaches a branch point or not is judged, if the PV curve reaches the branch point, it is showed that the power grid flow is insolvable, branch point identification is carried out at the moment, and the weakest node in the power grid is searched to obtain sensitivity information. The power grid flow solvability identification and initial value generating method based on the continuous power flow is suitable for load flow calculation with the initial values not given and needing the flat starting, and can serve as an effective tool for improving the initial values of the load flow calculation of large power grids.

A light source arrangement for substantially enhaning the lighting intensity of the light beams emitted from the light source therefore includes a lens body and an illumination unit. The lens body has an illumination portion defining a light projecting surface and at least a diffraction portion defining a light diffraction surface inclinedly extended at a diffraction angle, wherein a diffraction density of the illumination portion is different from that of the diffraction portion. The illumination unit is covered by the lens body for radially generating light towards the illumination portion. When the light reaches the light diffraction surface of a diffraction portion at an angle larger than the diffraction angle, the light is substantially reflected at the light diffraction surface back towards the light projecting surface, such that the light from the illumination unit is converged to project at the light projecting surface of the lens body.

The invention provides a deep reinforcement learning rotation speed prediction method and system for a table tennis robot. The prediction method comprises: normalizing a table tennis ball coming position sequence at equal time intervals; inputting the normalized sequence into a deep LSTM network; inputting the obtained state vector of the LSTM into an incident rotation estimation deep neural network to obtain an incident rotation speed; calculating reward feedback of deep reinforcement learning; combining the ping-pong ball coming position sequence, the ping-pong ball incident rotation speed and the reward feedback in the current ball hitting process into one-time ball hitting memory, and storing the one-time ball hitting memory into a memory bank; and randomly selecting at least one memory from a memory bank, inputting the state vector of the LSTM and the incident rotation speed of the table tennis ball into a reward feedback estimation deep neural network, outputting reward feedbackestimation, and performing back propagation and parameter updating on the incident rotation estimation deep neural network and the reward feedback estimation deep neural network. The ball returning device can accurately return the ball when coping with the rotating ball.

Provided is a secondary lens (10A), comprising a first face (11) whereby a gathered light beam from a light gathering lens enters, and a second face (12) which emits the gathered light beam from the light gathering lens toward a solar cell, said secondary lens (10A) guiding entry light to the solar cell by an optical refraction face (H2) which is disposed in the first face (11). A cross-section area of a direction which is perpendicular to an optical axis (Ax) of the gathered light beam of the first face (11) monotonically increases approaching the solar cell side from the light gathering lens side, and there is at least one inflection point (14a) whereat an oblique angle (theta) with respect to the plane of the direction which is perpendicular to the optical axis of the first face (11) declines approaching the solar cell side from the light gathering lens side.