Continuously adjustable image intensifier shutter with wide time range

Abstract

The technical problems that an existing intensifier shutter is low in closing speed, and continuous adjustment within the wide time range from direct current to 3ns cannot be achieved are solved. The invention provides a continuously adjustable image intensifier shutter with a wide time range. The continuously adjustable image intensifier shutter comprises main switching devices Q9 and Q10, a first driving circuit used for driving the main switching devices Q9, and a second driving circuit used for driving the main switching devices Q10. The main switching devices Q9 and Q10 are both field effect transistors; the main switch device Q9 is mainly used for quickly opening to form a shutter pulse high-speed falling edge; the main function of the main switching device Q10 is to quickly open to form a shutter pulse high-speed rising edge. The image intensifier can meet the direct-current working mode of the intensifier and can also meet the pulse working mode of the intensifier, the minimum pulse width reaches 3ns, and namely 3ns integral imaging can be achieved by combining the image intensifier with the image intensifier.

Description

technical field [0001] The invention belongs to the technical field of ultrafast diagnosis, and relates to a wide time range continuously adjustable image intensifier shutter. Background technique [0002] As a low-light multiplication device, the image intensifier is mainly used to multiply and amplify weak light signals, so that it is convenient for people to observe or be recorded by a recording system. Image intensifiers usually consist of a cathode, a microchannel plate, and a fluorescent screen. Among them, the main function of the cathode is to convert the incident light signal into electrons, the main function of the microchannel plate is to multiply the electrons, and the fluorescent screen is mainly used to convert the multiplied electrons into visible light. In some applications, when the image intensifier is used to observe a target with a long duration (more than 60 seconds), it works in a DC state, that is, it is continuously turned on. In other applications,...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problem that the closing speed of the existing intensifier shutter is slow and the continuous adjustment of the wide time range from DC to 3 ns cannot be realized, the present invention provides a continuously adjustable wide time range like the intensifier shutter, the pulse width is from DC to 3 ns The wide range is continuously adjustable, which can satisfy both the DC working mode of the intensifier and the pulse working mode of the intensifier, and the minimum pulse width reaches 3ns, that is, 3ns integral imaging can be realized by combining the image intensifier with the present invention

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