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Multi-spark extremely high-speed digital imaging system and method

A digital imaging system and multi-spark technology, applied in the field of photography, can solve the problem that the shooting frequency of the spark-type high-speed photography system cannot meet the needs of photography.

Inactive Publication Date: 2011-08-24
SHENZHEN UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a novel multi-spark extremely high-speed digital imaging system for the problem that the imaging frequency of the spark type high-speed imaging system in the prior art cannot meet the imaging requirements of some transient processes

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Embodiment Construction

[0045] figure 1 It is a compositional block diagram of the new multi-spark extremely high-speed digital imaging system, including four parts: an illumination unit 100 , an optical system unit 300 , a synchronization control unit 500 and an image recording unit 400 . Wherein, the image recording unit 400 is connected to the computer 600, and the target 200 is placed between the lighting unit and the optical system. The working principle of the system is as follows: the lighting unit 100 generates sequential flashes at ns or sub-ns level intervals (depending on the leading time of the driving pulse of the electro-optical deflector), and sequentially illuminates the target 200, and the optical system 300 illuminates the target 200 during each flash duration. The target state at the time is imaged on the photosensitive surface of the corresponding CCD image sensor of the image recording unit 400, and each CCD camera records a momentary image at different moments, and then outputs ...

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Abstract

The invention relates to a multi-spark extremely high-speed digital imaging system. The system consists of an illumination unit, an optical system unit, a synchronous control unit and an image recording unit. The illumination unit can generate a timing array spot light source through electro-optical deflection; a multi-channel high-resolution time delay synchronous control unit can achieve the accurate trigger of the light source, a target, an image sensor and an image acquisition card; and the image recording unit can acquire the CCD (charge coupled device) charge images of the target through a common commercial CCD camera in a frame delay readout manner. The multi-spark extremely high-speed digital imaging system can acquire 8 to 16 digital images (designed according to the number configuration of the spot light sources) at an extremely high frame frequency of ten billion amplitudes / seconds, and can be widely used in the flow visualization and photogrammetry of the nanosecond and sub-nanosecond transient processes, such as the studies on the high-voltage discharge, laser-supported plasma detonation wave evolution process, Z-pinch inertial confinement fusion technology and the like.

Description

technical field [0001] The present invention relates to photographic technology, and more particularly, relates to a novel multi-spark extremely high-speed digital imaging system. Background technique [0002] Multi-spark high-speed photography is a high-speed photography technology that uses a time-sequential point light source array to obtain multiple images of the transient process. The short-lived flashes emitted by the point light source realize the lighting and exposure control functions, and the timing trigger of the array point light source flash has a significant impact on the transient process. Carry out time division, and realize the image framing function through a suitable optical system. Compared with the usual framing high-speed photography system, the multi-spark high-speed photography system does not need a shutter, nor does it need moving parts for framing scanning, so its structure is simple, the cost is relatively low, and the imaging quality is good. It...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B15/05G03B39/00
Inventor 龚向东李景镇刘春平黄虹宾
Owner SHENZHEN UNIV
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