30results about How to "Improve time characteristics" patented technology

The invention provides a double-focusing electrode for a photomultiplier and the photomultiplier. The double-focusing electrode comprises a bowl-shaped automatic expansion focusing electrode and a secondary focusing electrode. The bowl-shaped automatic expansion focusing electrode comprises an annular bottom plate, and a rotating shaft, an arc-shaped blade, a torsional spring and a triggering device which are arranged on the bottom plate; the secondary focusing electrode is an annular metal electrode; wherein the base is fixed on the annular bottom plate; an insulating assembly is arranged between the secondary focusing electrode and the bottom plate; and the secondary focusing electrode is used for forming insulation between the secondary focusing electrode and a bowl-shaped focusing electrode formed by the arc-shaped blades, is also connected with an electric connecting sheet, penetrates through the insulating assembly and the bottom plate, extends to the lower part of the bottom plate to lead out the secondary focusing electrode, and is electrically connected to a lead system of the photomultiplier. Through the implementation of the invention, the photoelectron collection and detection efficiency can be improved.

The invention discloses a composite structure based on a Ce:YAG wafer, comprising a Ce:YAG wafer and a red light-emitting layer fixed on the Ce:YAG wafer, and also discloses the composition of the composite structure based on a Ce:YAG wafer The manufacturing method forms a compound optical structure capable of realizing wide-band light emission from green light to red light, and has wide applications in the fields of detection equipment and lighting devices.

The invention discloses an automatic expansion focusing electrode and a photomultiplier tube based on the automatic expansion focusing electrode. The photomultiplier tube includes a high-vacuum sealed shell, an auto-expandable focusing electrode, a photocathode with high quantum efficiency, an electron multiplication system, a connection and a lead system. The high-vacuum sealed casing as the outer shell of the photomultiplier tube is mainly used for sealing and as the base of other film layers. The self-expanding focusing electrode is used as the electron collector of the photomultiplier tube, including the bottom plate, expansion blades and automatic triggering mechanism. A high quantum efficiency photocathode is located in the upper region of the high vacuum sealed enclosure and converts incident photons into electrons. The electron multiplication system is located under the self-expanding focusing pole, which amplifies the electrons collected by the focusing pole and leads them out through the lead system. During the packaging process of the photomultiplier tube, the auto-expanding focusing pole will trigger the trigger mechanism, so as to realize the expansion action of the auto-expanding focusing pole and realize the enlargement of the radial dimension of the focusing pole.

The invention discloses a circuit for converting a thermometer code into a binary code circuit for a time-to-digital converter. The circuit comprises: a LUT screening circuit and an RAM storage circuit, the thermometer code is used as an input signal, which is accessed to the LUT screening circuit, an LUT unit in the screening circuit performs negation on upper 5 bits of the input signal, adds a negation result to the lowest bit of the input signal to obtain an output signal, and accesses the output signal to a reading enable end of the RAM storage circuit as a control signal; and when the reading enable end is pulled up, the binary code in the corresponding RAM storage circuit is read out at the next clock rising edge, so that the conversion of the thermometer code into the binary code isrealized. The circuit disclosed by the invention solves the bubbling problem existing in a decoding process of the time-to-digital converter based on FPGA, and improves the overall performance of theFPGA type time-to-digital converter.

The invention discloses a method for detecting a Spiking corner point based on a grayscale image, which belongs to the technical field of image processing and focuses on solving the problems of low corner point detection accuracy, complicated operation and slow detection speed in the prior art. The present invention mainly utilizes the characteristics of the Spiking neural network to invent a detection template to detect the corner information of the image, and determine the corner of the gray image by the characteristic that the voltage value of the detection template reaches the minimum when the voltage value is at the corner. points, the present invention can better detect the corner points of the image, and extract the time information and spatial information of the corner points of the grayscale image. The application scenarios of the present invention are mainly in image corner detection, character object tracking and recognition, motion estimation and other computer scenarios where corner information is applied. Involves Spiking neural network, machine learning.