A petal-shaped electrode and its manufacturing method, a method for generating a uniform electric field, and an image transformation tube
An electrode and petal-shaped technology, applied in the field of variable image tubes, can solve the problems of reducing the dynamic range of signal detection, weakening the technical characteristics of variable image tube streak cameras, etc., achieving good practicability and operability, easy to scan images without distortion, Excellent performance
Inactive Publication Date: 2020-04-03
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0005] At present, the most commonly used method for the miniaturization of the variable image tube streak camera is to reduce the components of the variable image tube year-on-year, but this will undoubtedly weaken the technical characteristics of the variable image tube streak camera. If the effective input window is reduced, its signal will inevitably be reduced. detection dynamic range, etc.
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[0059] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0060] Such as Figure 2 to Figure 4 As shown, a petal-shaped electrode 4 includes 8 identical arc-shaped electrode petals; the electrode petals are spaced and evenly arranged along the same circumference to form a cylindrical electrode as a whole; the gap between two adjacent electrode petals is along the The cylindrical electrodes are axially penetrated; the interval angle 2δ between the inner arc segments of each two electrode lobes is 10°, and the radius R of the petal electrode 4 is 30mm; the distance between two adjacent electrode lobes is equal everywhere.
[0061] When the petal electrode 4 is processed, a cylindrical electrode is uniformly cut off 8 identical arc surface segments around the circumference and along the generatrix direction to form 8 identical electrode lobes.
[0062] In this example, setting V d =100V, Putting th...
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The invention relates to a charged particle optical imaging element, in particular to a petal electrode and a manufacturing method, a method for generating a uniform electric field and an image conversion tube. In order to solve the technical problem that the size of the image conversion tube is difficult to be reduced under the condition of keeping the overall performance and function index of the system unchanged, the invention provides a lobed electrode and a manufacturing method thereof, a method for generating a uniform electric field, and an image conversion tube. A lobe-shaped electrodeis compose of 8n electrode lobes uniformly arrange along that same circumferential interval along the circumferential direction; The uniform electric field can be generated by setting the voltage ofeach electrode lobe according to the law. The invention also comprises an image conversion tube which is composed of a photocathode, a grid, a focusing electrode, the lobed electrode and a fluorescentscreen arranged in sequence along an optical path. The invention can be applied to a stripe camera of an image conversion tube, simultaneously realizes focusing and deflection of an electron beam, effectively reduces the number of electrodes in the image conversion tube and reduces the size thereof.
Description
technical field [0001] The invention belongs to the technical field of optical imaging components, and in particular relates to a petal-shaped electrode and a manufacturing method, a method for generating a uniform electric field, and an image transformation tube formed therefrom. Background technique [0002] The variable image tube streak camera is an ultrafast diagnostic device that realizes photoelectric conversion of ultrafast transient light signals, focusing imaging, scanning deflection, and image enhancement and processing. Due to its extremely fast recording speed [theoretical limit time resolution is as high as 10 femtoseconds (fs), 1fs=10 -15 s], coupled with its ability to enhance light and detect signals in different bands from infrared to ultraviolet, X-ray, etc., it has now become a 10 -8 ~10 -13 The main force in the field of ultrafast time-resolved diagnostic research in the s range. Due to the diversity of application fields and different requirements, t...
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IPC IPC(8): H01J31/50H01J29/08
CPCH01J29/085H01J31/50
Inventor 王超张志军白永林王屹山赵卫田进寿徐鹏王向林
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI