High-resolution low-light-level image enhancement tube
A high-resolution, low-light imaging technology, applied in the direction of image conversion/image amplification tubes, screen tubes, discharge tubes, etc., can solve the problem of the decline in the ability of image tubes to resist mechanical shock and vibration, limit the scope of use of image tubes, increase manufacturing Cost and other issues
Pending Publication Date: 2021-05-28
NORTH NIGHT VISION TECH
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Problems solved by technology
However, the reduction of the MCP pore diameter will increase the manufacturing cost on the one hand, and on the other hand, under the premise of ensuring its optimal aspect ratio and maximum opening ratio, the smaller the pore diameter of the MCP, the thinner the thickness of the MCP, and the lower its mechanical strength. , leading to a decline in the ability of the image tube to resist mechanical shock and vibration, which will greatly limit the scope of use of the image tube
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[0037] The technical solutions of the present invention will be described in further detail below in conjunction with specific examples, but the present invention is not limited to the technical solutions of the following examples.
[0038] refer to figure 1 The technical scheme of the present invention is described: the cathode flange 2, the contact ring 4, the assembly ring 5, the getter ring 7, and the isolation ring 8 are brazed with the ceramic cylinder A3, ceramic Cylinder B6 is welded together to form a shell, and a layer of metal layer 17 is evaporated on the sealing surface and inclined surface of the anti-halation glass window 1 for conduction and sealing with the shell, and a layer of 360nm is formed on the stepped surface. Na with spectral response in the range of ~940nm 2 KSb (Cs) photocathode 11, anti-halation glass 1 with metal layer 17 and photocathode 11 is used as an input window and sealed on the upper end of the tube shell through indium tin alloy 12. The...
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Abstract
The invention discloses a high-resolution low-light-level image enhancement tube. The high-resolution low-light-level image enhancement tube is composed of a cathode input window, a photoelectric cathode, a tube shell, an MCP, a fluorescent screen and an anode output window, wherein the MCP is high in gain and resistant to dispersion; the photoelectric cathode is a Na2KSb(Cs) photoelectric cathode and is evaporated on the cathode input window in an evaporation manner; the anode output window is a small-wire-diameter optical fiber panel and is sealed with an anode flange plate through a frit ring; the fluorescent screen coats the anode output window; and the anode output window coated with the fluorescent screen, the high-gain anti-dispersion MCP and the cathode input window evaporated with a photoelectric cathode are sequentially assembled and sealed in the tube shell with a short cathode proximity distance, and electron focusing is achieved in a double proximity mode. By means of cathode proximity distance control, MCP input enhancement, MCP tail end loss, anode output window structure setting and the like, transverse dispersion of optical signals or electric signals is reduced, and resolution is improved.
Description
technical field [0001] The invention belongs to the field of low-light image intensifiers, and relates to a high-resolution low-light image intensifier tube, which is mainly used as a night vision instrument for observing and tracking special targets in the nighttime environment. The invention can significantly improve the limit resolution of the low-light image intensifier, and has broad market prospect. Background technique [0002] The low-light image intensifier tube is the core device of the low-light night vision device, and it is widely used in night driving of various special vehicles, night aiming of guns, and target observation, detection, search and rescue under nighttime environmental conditions. [0003] At present, the domestic mainstream low-light night vision core device is still a low-light image intensifier tube with a multi-alkali photocathode as the photoelectric conversion material. The device consists of a cathode input window, a photocathode, a microch...
Claims
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Login to View More IPC IPC(8): H01J31/50H01J29/04H01J29/18
CPCH01J31/507H01J29/04H01J29/18
Inventor 苏德坦王乙瑾赵恒陈超丛晓庆李廷涛李晓峰张何丽董煜辉
Owner NORTH NIGHT VISION TECH