阅读说明：本技术 一种像增强器荧光屏性能对比装置及方法 (Image intensifier fluorescent screen performance comparison device and method ) 是由 曾进能 杨玺文 王艳 李金沙 潘治云 唐永滋 胡啟旭 张何丽 吴艳娟 朱世聪 于 2021-01-14 设计创作，主要内容包括：本发明公开了一种像增强器荧光屏性能对比装置及方法,该装置包括像增强器阳极窗、旋转底座与撒粉套件,所述旋转底座用于安装放置像增强器阳极窗和撒粉套件。荧光粉刷涂于阳极窗的阳极面板的工作面上,旋转底座中心设置有中心凹槽,中心凹槽的底部设置有抽气孔,心凹槽外围还设置有环形凹槽,可将撒粉套件插入其中；撒粉套件为中空圆柱体；在撒粉套件上部面中间设置有一横隔面,该横隔面将圆柱形腔体的上部一分为二。方法为使用上述装置,先将荧光粉I刷涂一半部,再将荧光粉II刷涂在另一半部,然后用透射光在显微镜下检验,可同时检查不同荧光粉所制荧光屏的针孔、裂纹等问题,用电子枪装置进行检测,同时检查不同荧光粉所制荧光屏的屏效。(The invention discloses an image intensifier fluorescent screen performance comparison device and method. The fluorescent powder is coated on the working surface of the anode panel of the anode window in a brushing way, the center of the rotating base is provided with a central groove, the bottom of the central groove is provided with an air exhaust hole, the periphery of the central groove is also provided with an annular groove, and a powder spreading kit can be inserted into the annular groove; the powder spreading kit is a hollow cylinder; the middle of the upper surface of the dusting kit is provided with a transverse partition surface which divides the upper part of the cylindrical cavity into two parts. The method comprises brushing half part of the fluorescent powder I, brushing the other half part of the fluorescent powder II, inspecting with a microscope by transmitted light, inspecting the pinhole and crack of fluorescent screens made of different fluorescent powders, inspecting with an electron gun, and inspecting the screen effect of the fluorescent screens made of different fluorescent powders.)

1. An image intensifier phosphor screen performance comparison device, comprising:

comprises an image intensifier anode window, a rotary base and a powder spreading kit;

the rotating base is used for installing and placing an image intensifier anode window and a dusting kit;

the image intensifier anode window is formed by bonding an anode panel and a flange plate and is used as a substrate of a fluorescent screen;

the small face at the upper part of the anode panel is a working face, and fluorescent powder is coated on the working face;

the powder spreading kit is arranged on the rotary base and used for dividing the working surface into two areas, and two different fluorescent powders can be simultaneously coated on the two areas and are on the fluorescent screen;

the rotating base is integrally cylindrical, a cylindrical central groove is arranged in the center, the caliber of the central groove is consistent with the diameter of the lower surface of the anode panel, and the depth of the central groove is consistent with the height from the lower end of the flange plate to the lower surface of the panel;

the bottom of the central groove is provided with an air exhaust hole which is connected with a vacuum pump; when the vacuum pump is used, the part below the flange plate of the anode window can be placed into the groove, and the vacuum pump starts to work to generate suction force so as to play a role in fixing the anode window;

the periphery of the central groove is also provided with an annular groove, and a dusting kit can be inserted into the annular groove to fix the dusting kit;

the powder spreading kit is a hollow cylinder; a transverse partition surface is arranged in the middle of the upper surface of the dusting kit and divides the upper part of the cylindrical cavity of the dusting kit into two parts;

the height of the transverse partition surface can ensure that the transverse partition surface is not contacted with the working surface and can prevent a large amount of fluorescent powder on the left side and the right side of the transverse partition surface from diffusing from the working surface and the transverse partition surface.

2. An image intensifier phosphor screen performance contrast device as recited in claim 1, wherein:

the upper part of the transverse partition surface is provided with a hinge and an opening and closing door;

the hinge is used for connecting the left semicircle opening and closing door and realizing opening and closing;

the opening and closing door is respectively used for shielding the left working surface and the right working surface and preventing fluorescent powder from entering the powder scattering suite cavity from the upper part.

3. An image intensifier phosphor screen performance contrast device as recited in claim 2, wherein:

and the two ends of the transverse partition surface are provided with baffles for blocking a large amount of fluorescent powder from diffusing from the two ends of the side edge.

4. An image intensifier luminescent screen performance comparison device according to any of claims 1 to 3, wherein:

the opening and closing door is provided with a handle, so that the opening and closing are facilitated.

5. An image intensifier phosphor screen performance contrast device as recited in claim 4, wherein:

and an adhesive tape is also arranged at the sealing position of the opening and closing door.

6. An image intensifier luminescent screen performance comparison device according to any of claims 1 to 3, wherein:

the thickness of the separation surface is 2 mm.

7. An image intensifier luminescent screen performance comparison device according to any of claims 1 to 3, wherein:

the height that the horizontal partition surface set up can make horizontal partition surface apart from anode window working face 2 mm.

8. An image intensifier luminescent screen performance comparison device according to any of claims 1 to 3, wherein:

the rotating base can be made of silicon rubber materials.

9. An image intensifier screen performance comparison method using an image intensifier screen performance comparison device as claimed in any of claims 1 to 8, comprising the steps of:

(1) preparing a clean fluorescent screen substrate, cleaning and spin-drying;

(2) coating resin glue on the working surface of the anode window;

(3) connecting an air exhaust hole at the bottom of the rotary base with a vacuum pump, and placing and installing an anode window and a dusting kit on the rotary base; turning on a vacuum pump;

(4) selecting first fluorescent powder, and brushing the fluorescent powder on the left/right half working faces;

(5) selecting another fluorescent powder, and brushing the fluorescent powder on the working surface of the other half part;

(6) taking down the anode window which is coated with different fluorescent powder, and continuing to carry out subsequent processes of coating an organic film, aluminizing and roasting to finish the manufacture of the fluorescent screen;

(7) the transmitted light is used for inspection under a microscope, and the problems of pinholes and cracks of fluorescent screens made of two different fluorescent powders can be simultaneously inspected;

(8) the screen effect of the fluorescent screens made of two different phosphors is checked simultaneously by an electron gun device.

Technical Field

The invention relates to the field of low-light-level image intensifiers, in particular to a device and a method for comparing performances of a fluorescent screen of an image intensifier.

Background

The image intensifier is a photoelectric imaging device and is widely applied to the fields of military affairs and scientific research. The focus of current image intensifier development is to improve range and image sharpness. The phosphor screen serves as one of the core components of the image intensifier, which plays a crucial role in the performance of the image intensifier.

The phosphor is a main material constituting the phosphor screen, and the particle diameter, the luminous efficiency, and the like of the phosphor itself have a decisive influence on the performance of the phosphor screen. The fluorescent powder has evaluation indexes such as particle size, color tone, stability and the like, but the focus of production research and development is on the resolution and brightness of the fluorescent powder on a screen. In the face of many phosphors, how to compare the performance of the phosphors on the screen has become a pressing need.

On one hand, the manufacturing process of the fluorescent screen is complex, and besides the brushing of fluorescent powder, the manufacturing process also comprises complex processes of preparing a clean screen substrate, coating an organic film, aluminizing and the like; on the other hand, the performance exhibited by the screen is also related to the internal structure of the image intensifier. The MCP gain, cathode quality and other factors inside the image intensifier directly influence the performance of the fluorescent screen, such as brightness, resolution and the like. Therefore, the performance of different phosphors in imaging on the image intensifier can be disturbed by a number of factors. How to control the interference variable and accurately compare the imaging effect of the fluorescent screen is an urgent problem to be solved.

Disclosure of Invention

The invention aims to provide a method and a device for comparing the performance of a fluorescent screen of an image intensifier.

The technical scheme of the invention is as follows:

an image intensifier fluorescent screen performance comparison device comprises an image intensifier anode window, a rotary base and a powder spreading (fluorescent powder spreading) kit, wherein the rotary base is used for installing and placing the image intensifier anode window and the powder spreading kit.

The image intensifier anode window is formed by bonding an anode panel and a flange plate, and is used as a substrate of a fluorescent screen. The small face on the upper part of the anode panel is a working face, and the fluorescent powder is coated on the working face.

The powder spreading kit is arranged on the rotary base and used for dividing the working surface into two areas, and two different kinds of fluorescent powder can be coated on the two areas simultaneously and are on the fluorescent screen.

The rotary base is integrally cylindrical, a cylindrical central groove is arranged in the center, the caliber of the central groove is consistent with the diameter of the lower surface of the anode panel, and the depth of the central groove is consistent with the height from the lower end of the flange plate to the lower surface of the panel.

And the bottom of the central groove is provided with an air exhaust hole which is connected with a vacuum pump. When the vacuum pump is used, the part below the flange plate of the anode window can be placed into the groove, and the vacuum pump starts to work to generate suction force, so that the anode window is fixed. Meanwhile, the periphery of the central groove is provided with an annular groove, and a dusting kit can be inserted into the annular groove to fix the dusting kit. The rotating base can be made of silicon rubber materials, so that the friction force between the rotating base and the part can be effectively increased, and the part can be effectively fixed while scratches are not generated.

The appearance of the dusting kit is cylindrical and adopts a hollow design. The middle of the upper surface of the dusting kit is provided with a transverse partition surface with the thickness of about 2mm, and the transverse partition surface divides the upper part of a cylindrical cavity of the dusting kit into two parts. The height of the transverse partition surface can ensure that the transverse partition surface is about 2mm away from the working surface of the anode window, so that the transverse partition surface is not contacted with the working surface, and a large amount of fluorescent powder on the left side and the right side of the transverse partition surface can be prevented from being diffused from the working surface and the transverse partition surface. And the upper part of the transverse partition surface is provided with a hinge for connecting the left and right semicircular opening and closing doors. The opening and closing door is respectively used for shielding the left working surface and the right working surface and preventing fluorescent powder from entering the powder scattering suite cavity from the upper part. The opening and closing door is provided with a handle, so that the opening and closing are facilitated. The baffle plates are arranged at two ends of the transverse partition surface and used for blocking a large amount of fluorescent powder from diffusing from two ends of the side edge. The sealing position of the opening and closing door is also provided with an adhesive tape, so that a large amount of fluorescent powder can be effectively prevented from entering the cavity from a gap between the opening and closing door and the shell when the opening and closing door is closed.

The contrast method adopted by the invention aims at reducing variable interference to the maximum extent, and the fluorescent screen capable of coating two different fluorescent powders simultaneously is manufactured by utilizing the device, so that the imaging effects of the different fluorescent powders can be compared under the same environment and the same view field.

The method for comparing the performance of the fluorescent screen of the image intensifier comprises the following steps:

(1) preparing a clean fluorescent screen substrate, cleaning and drying.

(2) And coating resin glue on the working surface of the anode window.

(3) And (4) connecting an air exhaust hole at the bottom of the rotating base with a vacuum pump, and placing and installing the anode window and the dusting kit on the rotating base. The vacuum pump was turned on.

(4) And (3) selecting first fluorescent powder (I), and brushing the fluorescent powder on the working surface of the left half part (the right half part).

(5) And selecting another fluorescent powder (II), and brushing the fluorescent powder on the other half part of the working surface.

(6) Taking down the anode window which is coated with different fluorescent powder, and continuing to carry out subsequent processes of coating organic film, aluminizing, roasting and the like to finish the manufacture of the fluorescent screen. At this time, the production of a fluorescent screen coated with two different phosphors at the same time is completed.

(7) The transmitted light is used for inspection under a microscope, and the problems of pinholes, cracks and the like of fluorescent screens made of two different fluorescent powders can be simultaneously inspected.

(8) The screen effect of the fluorescent screens made of two different phosphors is checked simultaneously by an electron gun device.

The invention has the beneficial effects that:

the method can be used for manufacturing the fluorescent screen capable of being coated with two different fluorescent powders simultaneously, effectively avoids the interference caused by a plurality of complex processes such as screen substrate preparation, machine film coating, aluminum plating and the like during comparison, and can be used for comparing the performances of the fluorescent screens made of the two fluorescent powders in the same view field, so that the comparison result is more visual and accurate. The method specifically comprises the following steps:

1. the present invention can use one anode window to make fluorescent screen coated with two different fluorescent powders. The method can unify other interference variables of the two fluorescent screens when comparing the performances of the fluorescent screens made of the two fluorescent powders, so that the comparison result is more accurate and reliable.

2. The invention can produce a fluorescent screen capable of simultaneously coating two different fluorescent powders, and can compare the fluorescent screens made of the two fluorescent powders in the same visual field during comparison, so that the comparison result is more visual.

Drawings

The present invention will be described in detail below with reference to the accompanying drawings and examples.

FIG. 1: the invention discloses a method for comparing the performance of a fluorescent screen of an image intensifier.

FIG. 2: the image intensifier anode window is a partially exploded schematic view.

FIG. 3: a schematic cross-section of a dusting kit.

FIG. 4: a dusting kit schematic.

FIG. 5: schematic view of a rotating base.

FIG. 6: cross-sectional schematic diagram of an apparatus for comparing screen performance of an automatically gated image intensifier.

FIG. 7: schematic diagram of an apparatus for comparing the performance of a luminescent screen of an automatically gated image intensifier.

Reference numerals and corresponding parts in the figures illustrate:

1-anode panel, the upper small face is the working face, and the anode window of the image intensifier is assembled with the flange.

And 2-a flange plate which is adhered to the step surface of the anode panel.

3-image intensifier anode window, which is composed of anode panel and flange plate by bonding and is used as fluorescent screen substrate.

4-working surface, the small surface of the upper part of the anode panel is the working surface, and the fluorescent powder can be brushed on the working surface by brushing the fluorescent powder to manufacture the fluorescent screen.

And 5, 2 doors are opened and closed and are used for shielding the left working surface and the right working surface respectively to prevent the fluorescent powder from entering the cavity of the powder scattering kit from the upper part.

And 6, a handle is positioned on the opening and closing door and is convenient to open and close.

7-transverse partition surface with thickness of about 2mm, and dividing the upper part of the cavity into two parts. Can prevent the diffusion of a large amount of fluorescent powder on the left and right sides of the transverse partition surface.

And the 8-hinge is positioned on the transverse partition surface and is used for connecting the opening and closing door.

9-baffles, located at both ends of the transverse partition surface, for blocking a large amount of fluorescent powder from diffusing from both ends of the side edge.

And the 10-adhesive tape is arranged at the sealing part of the opening and closing door, so that a large amount of fluorescent powder can be effectively prevented from entering the cavity from a gap between the opening and closing door and the shell when the opening and closing door is closed.

11-the powder spreading kit is integrally arranged on a rotating base, and an image intensifier anode window is arranged in the powder spreading kit and used for manufacturing fluorescent screens coated with two different fluorescent powders simultaneously.

12-rotating base for installing and placing the image intensifier anode window and the dusting kit.

13-central recess, the lower part of the anode window flange can be placed in.

14-annular groove into which the dusting kit can be inserted for fixing the dusting kit.

15-air extraction holes connected with a vacuum pump. When the vacuum pump is used, the vacuum pump starts to work to generate suction force, and the anode window is fixed.

Detailed Description

Example 1

As shown in fig. 2, the image intensifier anode window is composed of an anode panel and a flange plate bonded together to serve as a screen substrate. The small face at the upper part of the panel is a working face, and the fluorescent powder is coated on the working face.

The invention firstly provides an image intensifier fluorescent screen performance comparison device which is divided into a rotary base and a dusting kit. The rotating base is used for installing and placing the image intensifier anode window and the dusting kit. The powder spreading kit is arranged on the rotary base and used for dividing the working surface into two areas and coating two different fluorescent powders on the fluorescent screen.

As shown in figure 5, the rotary base is integrally cylindrical, a cylindrical groove is arranged in the center, the caliber of the rotary base is consistent with the diameter of the lower surface of the panel, and the depth of the rotary base is consistent with the height from the lower end of the flange plate to the lower surface of the panel. The bottom of the central groove is provided with an air exhaust hole which is connected with a vacuum pump. When the vacuum pump is used, the part below the flange plate of the anode window can be placed into the groove, and the vacuum pump starts to work to generate suction force, so that the anode window is fixed. Meanwhile, the periphery of the central groove is provided with an annular groove, and the powder spreading external member can be inserted into the annular groove to fix the powder spreading external member. The rotating base is made of silicon rubber materials, so that friction between the rotating base and parts is effectively increased, and the parts are effectively fixed while scratches are not generated.

The dusting kit of the present invention is shown in fig. 3, and the dusting kit is cylindrical in shape and is of a hollow design. The middle of the upper surface of the dusting kit is provided with a transverse partition surface with the thickness of about 2mm, and the upper part of the cavity is divided into two parts. The height of the anode window ensures that the transverse partition surface is about 2mm away from the working surface of the anode window, the anode window does not contact with the working surface, and a large amount of fluorescent powder on the left side and the right side of the transverse partition surface can be prevented from being diffused from the working surface and the transverse partition surface. The upper part of the transverse partition surface is provided with a hinge for connecting the left and right two semicircular opening and closing doors. The opening and closing door is respectively used for shielding the left working surface and the right working surface and preventing the fluorescent powder from entering the powder scattering suite cavity from the upper part. The handle is arranged on the opening and closing door, so that the opening and closing are facilitated. The two ends of the transverse partition surface are provided with baffles for blocking a large amount of fluorescent powder from diffusing from the two ends of the side edge. The adhesive tape is arranged at the sealing position of the opening and closing door, so that a large amount of fluorescent powder can be effectively prevented from entering the cavity from the gap between the opening and closing door and the shell when the opening and closing door is closed.

The contrast method adopted by the invention aims to reduce variable interference to the maximum extent and ensure that the imaging effects of different fluorescent powders can be contrasted under the same environment. The invention designs a comparison method, which is used for manufacturing a fluorescent screen capable of simultaneously coating two different fluorescent powders and carrying out comparison under the same view field. The method comprises the following steps:

(1) preparing a clean fluorescent screen substrate, cleaning and drying.

(2) And coating resin glue on the working surface of the anode window.

(3) And (4) connecting an air exhaust hole at the bottom of the rotating base with a vacuum pump, and placing and installing the anode window and the dusting kit on the rotating base. The vacuum pump was turned on.

(4) And (3) selecting first fluorescent powder, and brushing the fluorescent powder on the working surface of the left half part (the right half part).

(5) And selecting another fluorescent powder, and brushing the fluorescent powder on the other half of the working surface.

(6) Taking down the anode window which is coated with different fluorescent powder, and continuing to carry out subsequent processes of coating organic film, aluminizing, roasting and the like to finish the manufacture of the fluorescent screen. At this time, the production of a fluorescent screen coated with two different phosphors at the same time is completed.

(7) The transmitted light is used for inspection under a microscope, and the problems of pinholes, cracks and the like of fluorescent screens made of two different fluorescent powders can be simultaneously inspected.

(8) The screen effect of the fluorescent screens made of two different phosphors is checked simultaneously by an electron gun device. The method can be used for manufacturing the fluorescent screen capable of being coated with two different fluorescent powders simultaneously, effectively avoids the interference caused by a plurality of complex processes such as screen substrate preparation, machine film coating, aluminum plating and the like during comparison, and can be used for comparing the performances of the fluorescent screens made of the two fluorescent powders in the same view field, so that the comparison result is more visual and accurate.

As shown in FIGS. 1 to 7, the method of the present invention comprises the following steps:

1. and (4) preparing the cleaned anode window and drying the anode window.

2. 2046 resin glue is uniformly coated on the working surface of the anode window.

3. And connecting the air exhaust hole at the bottom of the rotary base with a vacuum pump. And putting the working surface of the anode window into the central groove of the base with the working surface upward, inserting the powder spraying kit into the annular groove, and turning on the vacuum pump.

4. And (3) clamping an upper handle of the opening and closing door by using a pair of tweezers, closing the opening and closing door on the left side of the powder scattering kit, opening the opening and closing door on the right side to expose the right half working surface, and brushing P31 fluorescent powder on the working surface.

5. And (3) clamping an upper handle of the opening and closing door by using tweezers, closing the right opening and closing door on the dusting kit, opening the left opening and closing door to expose the other half of the working surface, and brushing P20 fluorescent powder on the working surface.

6. Taking down the anode window which is coated with different fluorescent powder and roasting in high temperature environment.

7. Coating an organic film, aluminizing for the first time, and roasting the organic film in a high-temperature environment.

8. And aluminizing, silvering and polishing for the second time.

9. The transmitted light is used for inspection under a microscope, and the problems of pinholes, cracks and the like of fluorescent screens made of two different fluorescent powders can be simultaneously inspected.

10. The screen effect of the fluorescent screens made of two different phosphors is checked simultaneously by an electron gun device.

The invention designs the contrast method of the performance of the fluorescent screen of the image intensifier, manufactures the rotating base and the powder spreading suite device, and can manufacture the fluorescent screen coated with two different fluorescent powders simultaneously. The influence of interference variables during comparison is reduced to the maximum extent, and the fluorescent screens made of two kinds of fluorescent powder can be compared in the same view field, so that the aim of comparing the performances of the fluorescent screens of the image intensifier is fulfilled.