A digital imaging device and method for recording ultrafast processes

Abstract

The invention relates to digital imaging technology, in particular to a digital imaging device and method for recording ultrafast processes. Aiming at the problems existing in the prior art, the invention proposes a digital imaging device and method. Under the premise of realizing high imaging frequency of 105 fps-107 fps, dozens to hundreds of high-quality digital images can be obtained in one operation, which is suitable for testing and research of explosion mechanics, shock wave physics and fluid dynamics experiments. The present invention comprises that the signal control unit sends a driving signal to the rotating mirror driving unit; at the same time, the rotating mirror signal processing unit detects whether the rotating mirror signal output by the pneumatic rotating mirror of the imaging unit reaches a preset value, and when the rotating mirror signal output by the detecting imaging unit reaches When the preset value is reached, the signal control unit sends the camera control signal to the image processing unit; then the acquisition of the target image is completed through the cooperation of the rotating mirror signal processing unit, the rotating mirror driving unit, the imaging unit and the image processing unit.

Description

technical field [0001] The invention relates to digital imaging technology, in particular to a digital imaging device and method for recording ultrafast processes. Background technique [0002] Many fast-changing processes in nature, such as physics, chemistry, and biology, must be observed and studied with high-time-resolution imaging methods, such as vibrations, the flight of shells, spark discharges, explosions, chemical reactions of substances, and photosynthesis of plants. wait. The study of ultrafast processes with time resolution from microseconds to nanoseconds is of great significance in the fields of science and military affairs, such as the study of fluid dynamics, explosion mechanics, shock wave physics, and plasma. In order to obtain the image data of the rapid development process of the research object, the device required to obtain the image must reach 10 5 fps~10 7 The imaging frequency of fps. [0003] At present, the high-speed digital imaging technolog...

AI Technical Summary

Problems solved by technology

In these high-speed digital imaging technologies, the highest imaging frequency of high-speed CCD video cameras is only up to 10 5 fps, the imaging frequency is low, and in the high frequency band 10 4 fps~10 5 At fps, the image quality is only a very low level of several hundred pixels × tens of pixels; the special CCD digital imaging technology is not yet mature, and the image quality is not high (hundreds of pixels × hundreds of pixels); The imaging frequency can be very high, but due to the poor imaging quality of key components, the final image resolution is below 1K×1K, and the total number of images is very small (only a few, usually 8)

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