50results about How to "Shorten the propagation path" patented technology

The invention provides a compound eye lens group and a projection device using same. The compound eye lens group comprises a light incident surface, a light reflecting surface and a light output surface, which are in triangle arrangement. A first microlens array is arranged on the light incident surface. The first microlens array enables an incident beam to be split into a plurality of beams of convergent light. The plurality of beams of convergent light converge into a plurality of point light sources on the light output surface after be reflected by the light reflecting surface. A second microlens array is arranged on the light output surface. The second microlens array is used for diffusing and outputting the light of the plurality of point light sources. The compound eye lens group andthe projection device using the same are simple in structure and small in size.

The invention discloses a light guide system, a lateral type backlight module and a liquid crystal display (LCD). The light guide system comprises an ambient light collecting system, a plurality of light guide devices and at least two light guide bars. The ambient light collecting system faces towards ambient light, absorbs the ambient light and generates absorbed light. Each light guide device is provided with a light inlet end and a light outlet end, the light inlet end is close to the ambient light collecting system, and the absorbed light enters the light inlet end and is guided to the light outlet end. Each light guide bar comprises a light outlet lateral face, a light inlet lateral face and a second lateral face, wherein each light inlet lateral face is connected with the corresponding light outlet lateral face, and each second lateral face is opposite to the corresponding light inlet lateral face. The light outlet lateral faces are close to a light inlet face of a light guide panel, the second lateral face of a first light guide bar is arranged opposite to that of a second light guide bar, one part of the light outlet ends of the light guide devices are close to the light inlet lateral face of the first light guide bar, and the other part of the light outlet ends of the light guide devices are close to the light inlet lateral face of the second light guide bar.

The invention relates to a water curtain type trapper which comprises a light-emitting lamp, a solar device and a light-transmitting cylinder. The solar device comprises a solar panel and a storage battery. The electric quantity output end of the solar panel is connected with the storage battery. The storage battery comprises a battery body and a first electrode fixed to the battery body. The light-emitting lamp is provided with a connecting hole, and a second electrode is arranged in the connecting hole. The first electrode part is detachably inserted into the connecting hole in a penetrating mode. The part, inserted into the connecting hole, of the first electrode is in contact with the second electrode. The light-transmitting cylinder is hollow and is provided with two ends, one end of the light-transmitting cylinder is opened, and the other end of the light-transmitting cylinder is closed. The light-emitting lamp penetrates into the light-transmitting cylinder from the opened end. The electric energy loss of the water curtain type trapper is small in working, and the light-emitting time of the light-emitting lamp is long.

The invention discloses a light-emitting diode which comprises a substrate, a first semiconductor layer, an active layer and a second semiconductor layer, wherein the substrate has a first surface and a second surface which are opposite to each other, the first semiconductor, the active layer and the second semiconductor are sequentially stacked on the first surface of the substrate, a first electrode is electrically connected with the first semiconductor layer, a second electrode is electrically connected with the second semiconductor, and the second surface of the substrate is a light-emitting surface of the light-emitting diode. At least one surface of the substrate further comprises a plurality of three-dimensional nanometer structures which extend parallelly, each three-dimensional nanometer structure comprises a first protruding edge and a second protruding edge which extend parallelly, a first groove is arranged between the adjacent first protruding edge and second protruding edge, a second groove is arranged between the adjacent three-dimensional nanometer structures, and the depth of the first groove is smaller than that of the second groove.

The invention relates to a digital watermarking processing system of BMP image, which belongs to the technical field of computer application. The digital watermarking processing system of BMP image is composed of a central processing module FPGA, a JTAG interface, an SDRAM memory, an Flash memory, an SD card interface and an LED indication lamp; the central processing module FPGA is composed of an NiosII processor, a digital watermarking processing module, a JTAG controller, an SDRAM controller, a three-state bridge controller, an SD card controller and a PIO controller that are connected together in conventional connection way through a data bus; the JTAG interface, the SDRAM memory, the Flash memory, the SD card interface and the LED indication lamp are connected with the JTAG controller, the SDRAM controller, the three-state bridge controller, the SD card controller and the PIO controller respectively in conventional connection way. The digital watermarking processing system of BMP image is fast for processing speed, small in volume, simple, portable and convenient to timely execute copyright protection on the obtained original image information.

The invention discloses a method for realizing multi-point real touch on a surface acoustic wave touch screen. The method comprises the following steps that (1), a group of transmitting transducer arrays or receiving transducer arrays are at least arranged on the X axis or the Y axis; (2), a transmitting circuit drives transmitting transducers to transmit a surface acoustic wave signal, and a receiving circuit controls receiving transducers to receive the surface acoustic wave signal; (3), when a touch body touches the surface acoustic wave touch screen, the surface acoustic wave signal reaches the receiving transducers after being reflected by the touch body; when the surface acoustic wave signal intensity is greater than a set threshold value, the receiving circuit sends the surface acoustic wave signal to an MCU (microprocessor control unit), and the MCU determines the coordinates of the touch body. By the method, the multi-point real touch response of two or more points is realized, ghost points are eliminated fundamentally, and moreover, the touch response of unlimited points in a touch area can be really realized by the conventional process.

A printed circuit board includes a printed wiring board, an electronic element provided on a mounting surface of the printed wiring board, and a heat radiation member provided on an opposite side of a side on which the printed wiring board is positioned with respect to the electronic element, the heat radiation member thermally connected to the electronic element. An end portion of the heat radiation member is disposed closer to the printed wiring board than a connection portion with the electronic element in the heat radiation member, in a state where a space is provided between the end portion and the printed wiring board.

The embodiment of the invention provides a circuit and a method for detecting current in a battery high-voltage circuit, a detector, a battery device, a carrying tool and a computer storage readable medium so as to solve the problem that the accuracy of the battery module current value detected by a current detection circuit is low in the prior art. The circuit for detecting the current in the battery high-voltage circuit comprises a processing assembly, a resistor and a pre-charge loop, the resistor comprises a cathode connection end and a non-cathode connection end which are connected to theprocessing assembly, the pre-charge loop comprises an anode connection end and a non-anode connection end which are connected to the processing assembly, and the non-anode connection end is connectedwith the non-cathode connection end. The circuit is integrated into the high-voltage circuit, connection wires of the components in the circuit are short, the current loss is reduced, and the accuracy of the battery module current value is improved.

The invention provides a taper waveguide rotating stub which comprises a first flange, a first circular waveguide, a waveguide converter, a rectangular waveguide, a second circular waveguide and a second flange, wherein the first and second circular waveguides are perpendicular to each other; the diameter of the first circular waveguide is greater than the height of the rectangular waveguide; a circular port adapted to the diameter of the first circular waveguide is formed in one end of the waveguide converter, and a rectangular port adapted to the height of the rectangular waveguide is formed in the other end of the waveguide converter; the first flange is arranged at one end of the first circular waveguide; the other end of the first circular waveguide is connected with the circular port of the waveguide converter; the rectangular port of the waveguide converter is connected with the lateral surface of the rectangular waveguide; the second flange is arranged at one end of the second circular waveguide; the other end of the second circular waveguide is connected with the end face of the rectangular waveguide; the second circular waveguide and the rectangular waveguide are coaxially arranged. According to the taper waveguide rotating stub, a transmission path of electromagnetic waves in a waveguide channel can be shortened.

The present application discloses an array substrate, a preparation method thereof, and a display device, which are used to reduce the light propagation path of pattern recognition and improve the accuracy and efficiency of pattern recognition. The array substrate includes: a substrate; the array substrate has: a display area and a peripheral area; the display area includes: a first thin film transistor on the substrate, and a first connection lead electrically connected to the first thin film transistor on the substrate , an encapsulation layer over the first thin film transistor, a photosensitive device over the encapsulation layer, and a second connection lead electrically connected to the photosensitive device over the encapsulation layer; a first connection lead, a second connection lead, and The encapsulation layers all extend to the peripheral area; the peripheral area includes: a blocking wall between the first connection lead and the encapsulation layer; the encapsulation layer covers the blocking wall, and the encapsulation layer has an exposed first The first via hole of the connecting lead, and the second connecting lead are electrically connected to the first connecting lead through the first via hole.

The invention discloses a light emitting diode, which comprises a substrate, a first semiconductor layer arranged on the surface of the substrate, a protruding part arranged on the surface of the first semiconductor layer and a first reflection structure, and is characterized in that the surface of the first semiconductor layer comprises a first conductive region and a second conductive region; the protruding part is arranged in the first conductive region of the first semiconductor layer, and the protruding part sequentially comprises an active layer and a second semiconductor layer on the surface of the first semiconductor layer; the first reflection structures are arranged in the protruding parts and penetrate through the second semiconductor layer, the active layer and at least part of the first semiconductor layer, the material of the first semiconductor layer comprises Al < x > Ga < 1-x > N, X ranges from 0 to 1, and the wavelength of radiation light of the light-emitting diode ranges from 200 nm to 320 nm. According to the invention, the propagation path of light in the epitaxial layer can be effectively shortened, the light absorbed by the epitaxial layer, especially the first semiconductor layer, is reduced, and the light emitting efficiency of the light is improved.

The invention discloses a fluorescent wheel fixing structure and a laser projection device, and relates to the field of display technology. On the premise of ensuring the normal heat dissipation of the fluorescent wheel, the size of the fluorescent wheel can be reduced, the cost can be reduced, noise can be reduced, and user experience can be improved. Including a housing, the inner cavity of the housing is used to accommodate the fluorescent wheel, the fluorescent wheel includes a wheel piece and a motor, the output end of the motor is fixed to the wheel piece, and the outer shell of the motor is away from the side of the output end A motor cooling plate is closely attached and fixed, and the motor cooling plate is attached and fixed to the inner wall of the inner cavity, so as to fix the fluorescent wheel and the housing. The invention is used in the manufacture of laser projection devices.

The present application provides an inductance-capacitance network unit and a DC-DC converter, which are applied to an input filter unit, an inverter unit connected to the input filter unit, a transformer unit, a first port and a second port, and the inverter unit. A power conversion system in which the third port and the fourth port are connected to the inductor-capacitor network unit connected to the transformer unit, the rectifier unit connected to the transformer unit, and the output filter unit connected to the rectifier unit. The inductor-capacitor network unit includes a first capacitor and a second capacitor. An inductor, a second inductor, a second capacitor and a third capacitor, the first end of the first capacitor is connected to the first ends of both the first inductor and the second capacitor, the first port is the second end of the first capacitor, and the first end of the first capacitor is connected to the first end of the first capacitor. The three ports are the second end of the first inductor, the second port is the first end of both the second inductor and the third capacitor, the second ends of the second capacitor and the third capacitor are grounded, and the fourth port is the second end of the second capacitor. The second terminal of the inductor. Reduce electromagnetic compatibility problems caused by high-frequency harmonics.