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Ultrafast multi-two-dimensional image detection method and device

A two-dimensional image and detection device technology, applied in the field of image detection, can solve problems such as the limitation of the number of effective pixels in two-dimensional images, and achieve the effect of solving the problem of scanning overlap and increasing the number of effective pixels

Active Publication Date: 2021-06-11
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

[0003] The purpose of the present invention is to propose an ultra-fast multiple two-dimensional image detection method and device for the problem that the number of effective pixels in the two-dimensional image is limited when using a streak camera to detect multiple ultra-high time-resolved two-dimensional images based on the sampling method , use the image conversion structure to receive and rearrange the two-dimensional images into n rows of one-dimensional image output, and then control the stripe tube through the stripe tube control circuit to realize the image gating and scanning of the n rows of one-dimensional images within a specific time, the stripe tube The output image is recorded by the recording camera, and the computer restores the recorded image to a continuous sequence of multiple two-dimensional images within a specific time by using the pixel correspondence between the two-dimensional image and n rows of one-dimensional images in the image conversion structure

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Embodiment Construction

[0043] At present, the acquisition of multiple ultra-high time-resolved two-dimensional images at different times is achieved through a framing camera. The framing camera performs multi-framing processing on the optical image through a beam-splitting optical path based on a beam splitter or a reflector, and then multiple image enhancements Affected by factors such as the space charge effect in the image intensifier, the fastest time resolution is on the order of 30ps. In addition, the acquisition of more framing images requires more splitting and more image-intensifying camera records, resulting in problems such as system sensitivity degradation and difficult integration of optical structures. Streak cameras have ultra-high time resolution characteristics, and the fastest time resolution can reach hundreds of fs. However, their applications are limited because they usually only detect one-dimensional images on one line. In recent years, the use of streak cameras to detect two-...

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Abstract

The invention belongs to the technical field of image detection, provides an ultrafast multi-two-dimensional image detection method and device, and solves the problem that the number of effective pixels of an obtained image is limited when two-dimensional image detection is realized by using an image conversion structure and streak camera combination. A streak tube receives an input image through the first image coupling structure, the image conversion structure and the streak tube control circuit are additionally arranged, the two-dimensional images are received through the image conversion structure and rearranged into n rows of one-dimensional images to be output, the streak tube control circuit controls the streak tube to conduct gating and scanning control on the n rows of one-dimensional images, continuous sequence images of the n rows of one-dimensional images in specific time are output from the streak tube, the images output by the streak tube are recorded by the camera and uploaded to the computer, the images recorded by the computer are restored according to the one-to-one correspondence relation of all pixels of the two-dimensional images and the one-dimensional images of the image conversion structure, and a sequence of multiple continuous two-dimensional images in specific time is obtained.

Description

technical field [0001] The invention belongs to the technical field of image detection, and in particular relates to a device for realizing ultra-high time-resolution multi-frame two-dimensional image detection based on an image conversion structure and a stripe tube control circuit, in particular to an ultra-fast multi-frame two-dimensional image detection method and device, It is suitable for obtaining multiple ultra-high time-resolved two-dimensional light image information in a single continuous operation. Background technique [0002] Obtaining multiple ultra-high time-resolved two-dimensional optical image information at different times plays an important role in the research fields of physics, chemistry, and biomedicine, and is an important means to analyze and study ultrafast processes. The traditional acquisition of multiple ultra-high time-resolved two-dimensional optical images at different times is achieved through a framing camera. The framing camera performs mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/02G01C11/00
CPCG01C11/02G01C11/00
Inventor 宋岩彭博栋马继明盛亮段宝军宋顾周岳志勤赵吉祯
Owner NORTHWEST INST OF NUCLEAR TECH
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