High-precision fiber micropore precision coupling device and method

Abstract

The application relates to a high-precision optical fiber micro-hole precise coupling device and method, and relates to space high-energy cosmic radiation detection facilities, and is used for solving the problem that the micro-hole alignment precision cannot meet the mu m level in the existing space high-energy particle detection experiment, and the CMOS camera and the optical fiber micro-hole plate adopt a common fixed mechanical assembly structure. The high-precision optical fiber micro-hole precise coupling device comprises an integrated image intensifier assembly and an optical fiber micro-hole plate assembly, and is used for mounting the integrated image intensifier and the optical fiber micro-hole plate to be coupled; the integrated image intensifier assembly and the optical fiber micro-hole plate assembly are matched, and the high-precision coupling of the integrated image intensifier and the optical fiber micro-hole plate can be realized; the application has the advantages of high coupling efficiency and simple operation.

Description

Technical Field

[0001] The present invention relates to a space high-energy cosmic radiation detection facility, and in particular to a high-precision optical fiber microhole precision coupling device and method. Background Art

[0002] The High Energy Cosmic Radiation Detector (HERD) calorimeter consists of a crystal array, an intensifier camera, and a photodiode (PD) system. The intensifier camera is responsible for amplifying and delaying the optical signal output by the crystal array, and a CMOS camera is used to measure the signal amplitude. The intensifier camera consists of two parts: a front-end and a back-end. The front-end primarily handles functions such as on-orbit precision coupling, coupling distance measurement, precision temperature control, event detection, photoelectric conversion, signal amplification, and imaging. It integrates various interfaces for optical, mechanical, electrical, thermal, and measurement, as well as thermal conductive surfaces, light cone coupling surfaces, electronic connectors, a macro detection end face, and mounting guide pins. The light cone coupling surface is used to couple with the imaging surface of the detection fiber panel.

[0003] The intensified camera is expected to be replaced on-orbit every five years. This on-orbit replacement ensures that the integrated image intensifier in the intensified camera will cover the entire on-orbit operational life of HERD and achieve the feasibility goal of improving some key performance indicators. Through technical breakthroughs in precision structural design, precise online micro-distance measurement, and precise assembly and reset, on-orbit recoupling and reset accuracy has been achieved to better than 10μm.

[0004] However, as the needs of dark matter detection and HERD research evolved and deepened, the fiber-optic faceplate evolved into a fiber-optic microporous plate with multiple optical fibers inserted. A new integrated image intensifier was also designed. The integrated image intensifier's light cone coupling surface features micropores that mate with the fiber-optic microporous plate. Both contain multiple sets of 350μm diameter micropores. The light cone coupling surface requires precise coupling with the opposing fiber-optic microporous plate, requiring one-to-one alignment of the micropores with a three-dimensional accuracy of 7μm ± 2μm.

[0005] The commonly used fixed mechanical assembly structure cannot meet the precision requirements of the μm level. In addition, the overall weight of the CMOS camera is large, and it is impossible to achieve the micropore alignment between the fiber optic micropore plate and the front end of the integrated image intensifier by adjusting the CMOS camera.

[0006] Therefore, it is necessary to design a precision assembly and adjustment device and method to achieve on-track precision coupling between the optical fiber microporous plate and the integrated image intensifier front end. Summary of the Invention

[0007] The purpose of the present invention is to solve the problem that in existing space high-energy particle detection experiments, the CMOS camera and the fiber optic micropore plate adopt a commonly used fixed mechanical assembly structure, and the micropore alignment accuracy cannot meet the μm level. Instead, a high-precision fiber optic micropore precision coupling device and method are provided.

[0008] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides the following technical solutions:

[0009] A high-precision optical fiber micro-hole precision coupling device, which is special in that it includes an integrated image intensifier component and an optical fiber micro-hole plate component;

[0010] The integrated image intensifier assembly includes an intensifier housing and an intensifier adapter flange that are coaxially fixed in sequence from the inside to the outside, an intensifier adjustment washer is provided in the axial gap between the intensifier housing and the intensifier adapter flange, an integrated image intensifier to be coupled is provided in the intensifier housing, and a plurality of first marking holes are provided on the integrated image intensifier to be coupled;

[0011] The optical fiber microporous plate assembly includes a microporous plate outer frame and a microporous plate adapter flange that are coaxially fixed in sequence from the inside to the outside; a microporous plate adjustment gasket is provided in the axial gap between the microporous plate outer frame and the microporous plate adapter flange, a first inner convex ring is provided at one end of the microporous plate outer frame, and the end is used to be fixed to the microporous plate adapter flange, the optical fiber microporous plate to be coupled is provided in the first inner convex ring, and a microporous plate pressing ring is provided at the other end, a microporous plate spacer is provided between the optical fiber microporous plate to be coupled and the microporous plate pressing ring, and the optical fiber microporous plate to be coupled is provided with second marking holes corresponding to the multiple first marking holes one by one;

[0012] The intensifier adapter flange is provided with a plurality of first positioning holes evenly distributed around the circumference, for forming a first positioning reference coordinate system; the microporous plate adapter flange is provided with second positioning holes corresponding one-to-one to the first positioning holes, for forming a second positioning reference coordinate system, and the second positioning reference coordinate system is used to cooperate with the first positioning reference to achieve precise coupling between the integrated image intensifier and the optical fiber microporous plate.

[0013] Furthermore, an axial convex ring is provided on the end face of the enhancer adapter flange, and a first outer convex ring is provided on the outer side wall of the enhancer shell. The first outer convex ring and the axial convex ring are provided with a plurality of one-to-one corresponding first through holes for fixing the enhancer shell and the enhancer adapter flange.

[0014] Furthermore, the intensifier adjustment washer is provided between the first outer convex ring and the axial convex ring, and the intensifier adjustment washer is provided with a plurality of through holes corresponding to the first through holes.

[0015] Furthermore, a second outer convex ring is provided on the outer side wall of the microporous plate outer frame, and a second inner convex ring is provided on the inner side wall of the microporous plate adapter flange. The second outer convex ring and the second inner convex ring are provided with a plurality of one-to-one corresponding second through holes for fixing the microporous plate outer frame and the microporous plate adapter flange.

[0016] Furthermore, the microplate adjusting washer is provided between the second outer convex ring and the second inner convex ring, and the microplate adjusting washer is provided with a plurality of through holes corresponding to the second through holes.

[0017] Furthermore, pin bushings are provided in the plurality of second positioning holes, and pins adapted to the pin bushings are provided in the plurality of first positioning holes.

[0018] At the same time, the present invention provides a high-precision optical fiber microhole precision coupling method, which uses the above-mentioned high-precision optical fiber microhole precision coupling device, and its special feature is that it includes the following steps:

[0019] Step 1, coupling of optical fiber microplate assembly;

[0020] Step 1.1, install the pin bushings into the second positioning holes on the microplate adapter flange;

[0021] Step 1.2: Install the optical fiber microporous plate to be coupled in the microporous plate outer frame, and install the microporous plate spacer and microporous plate pressure ring in sequence to press the optical fiber microporous plate tightly;

[0022] Step 1.3: Install the microplate adjustment gasket in the microplate adapter flange;

[0023] Step 1.4: Install the whole formed in step 1.2 into the whole formed in step 1.3, and screw through the microplate outer frame and the microplate adjustment gasket in sequence, and fix it in the second through hole on the microplate adapter flange to complete the coupling of the optical fiber microplate assembly;

[0024] Step 2: Coupling of the integrated image intensifier assembly;

[0025] Step 2.1, fix the integrated image intensifier to be coupled and the intensifier housing;

[0026] Step 2.2: Finish turning the intensifier housing, the front end face and the outer circle of the intensifier adapter flange to ensure that the intensifier housing and the intensifier adapter flange can be coaxially installed and that the light cone coupling surface is in the designed position;

[0027] Step 2.3: Install the intensifier adjustment gasket and intensifier adapter flange on the intensifier housing in sequence to complete the coupling of the integrated image intensifier assembly.

[0028] Step 3: Adjust the test;

[0029] Place the fiber optic microporous plate assembly obtained in step 1.4 and the integrated image intensifier assembly obtained in step 2.3 flatly and fix them on the test bench respectively; use the center of the circle where the multiple first positioning holes are located and the center of the circle where the multiple second positioning holes are located as reference points, establish a first positioning reference coordinate system and a second positioning reference coordinate system respectively, align the multiple first marking holes and the multiple second marking holes one by one, and then coaxially assemble the fiber optic microporous plate assembly and the integrated image intensifier assembly to complete the coupling.

[0030] Furthermore, the step 2.1 specifically includes: filling and fixing the integrated image intensifier to be coupled with the intensifier housing with glue, and making the front end surface of the integrated image intensifier protrude from the intensifier housing by 2±0.1 mm.

[0031] Furthermore, the step 3 is specifically as follows:

[0032] Step 3.1, placing the optical fiber microporous plate assembly obtained in step 1.4 and the integrated image intensifier assembly obtained in step 2.3 flatly and fixing them on the test bench respectively;

[0033] Step 3.2, using optical three-coordinate measurement to test the positions of multiple first positioning holes of the integrated image intensifier assembly, establishing a first positioning reference coordinate system with the center of the circle where the multiple first positioning holes are located as a reference point, and determining the coordinates of the centers of the multiple first positioning holes; using optical three-coordinate measurement to measure the positions of multiple second positioning holes on the microplate assembly, establishing a second positioning reference coordinate system with the center of the circle where the multiple second positioning holes are located as a reference point, and determining the coordinates of the centers of the multiple second positioning holes; comparing the coordinates of the multiple first marking holes with the coordinates of the multiple second marking holes, and adjusting them multiple times until the coordinates of the multiple first marking holes correspond one-to-one with the coordinates of the multiple second marking holes, and then coaxially assembling the optical fiber microplate assembly and the integrated image intensifier assembly to complete the coupling;

[0034] Alternatively, the integrated image intensifier assembly is placed flat and fixed on a test bench, and the position of the first positioning hole of the integrated image intensifier assembly is tested using optical three-coordinate measurement. A first positioning reference coordinate system is established with the center of the circle where the multiple first positioning holes are located as the reference point, and the coordinates of the multiple first marking holes are determined. The optical fiber microporous plate assembly and the integrated image intensifier assembly are coaxially assembled, and the relative positions are adjusted during assembly until the multiple first marking holes completely overlap with the multiple second marking holes, thereby completing the coupling.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention discloses a high-precision optical fiber microporous precision coupling device, comprising an integrated image intensifier assembly and an optical fiber microporous plate assembly, which are respectively used to install the integrated image intensifier and the optical fiber microporous plate to be coupled; the integrated image intensifier assembly cooperates with the optical fiber microporous plate assembly to achieve high-precision coupling of the integrated image intensifier and the optical fiber microporous plate; the present invention has the advantages of high coupling efficiency and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of an integrated enhancer assembly in an embodiment of a high-precision optical fiber microhole precision coupling device of the present invention;

[0038] Figure 2 Schematic diagram of the structure of the microplate assembly in an embodiment of the present invention;

[0039] Figure 3 This is a schematic cross-sectional view of the coaxial assembly of the integrated enhancer assembly and the microporous plate assembly in step 3 of an embodiment of a high-precision optical fiber microporous precision coupling method of the present invention (the first positioning hole is not shown);

[0040] Figure 4 for Figure 3 A partial enlarged view of

[0041] Figure 5 This is a schematic diagram of the exploded structure after the integrated enhancer assembly and the microporous plate assembly are coaxially assembled in step 3 of an embodiment of the present invention.

[0042] The accompanying drawings are marked as follows: 01-integrated image intensifier; 02-optical fiber microporous plate; 1-intensifier adapter flange; 2-intensifier housing; 3-intensifier adjustment gasket; 4-microporous plate outer frame, 41-first inner convex ring, 42-second outer convex ring; 5-microporous plate adapter flange, 51-second inner convex ring; 6-microporous plate pressure ring; 7-microporous plate spacer; 8-microporous plate adjustment gasket; 9-first positioning hole; 10-second positioning hole; 11-pin sleeve; 12-pin. DETAILED DESCRIPTION

[0043] The present invention will be further described below with reference to the accompanying drawings and exemplary embodiments.

[0044] Reference Figure 1 、 Figure 2 , a high-precision optical fiber microporous precision coupling device, including an integrated image intensifier component and an optical fiber microporous plate component.

[0045] The integrated image intensifier assembly includes an intensifier housing 2 and an intensifier adapter flange 1, which are coaxially fixed from the inside out. The integrated image intensifier 01 to be coupled is mounted within the intensifier housing 2 and is provided with four first marking holes. An axial convex ring is provided on the end face of the intensifier adapter flange 1, and a first outer convex ring is provided on the outer wall of the intensifier housing 2. The first outer convex ring and the axial convex ring are provided with four corresponding first through holes for securing the intensifier housing 2 and the intensifier adapter flange 1. An intensifier adjustment washer 3 is provided between the first outer convex ring and the axial convex ring, and the intensifier adjustment washer 3 has four through holes corresponding to the first through holes.

[0046] The optical fiber microporous plate assembly includes a microporous plate outer frame 4 and a microporous plate adapter flange 5 which are coaxially fixed from the inside to the outside; one end of the microporous plate outer frame 4 is provided with a first inner convex ring 41, and the end is used to be fixed with the microporous plate adapter flange 5, the optical fiber microporous plate 02 to be coupled is provided in the first inner convex ring 41, and the other end is provided with a microporous plate pressure ring 6, and a microporous plate spacer 7 is provided between the optical fiber microporous plate 02 to be coupled and the microporous plate pressure ring 6; the outer wall of the microporous plate outer frame 4 is provided with a There is a second outer convex ring 42, and a second inner convex ring 51 is provided on the inner side wall of the microporous plate adapter flange 5. The second outer convex ring 42 and the second inner convex ring 51 are provided with four second through holes corresponding to each other, which are used to fix the microporous plate outer frame 4 and the microporous plate adapter flange 5. Pin bushings 11 are provided in each through hole. A microporous plate adjustment washer 8 is provided between the second outer convex ring 42 and the second inner convex ring 51. The microporous plate adjustment washer 8 is provided with four through holes corresponding to the second through holes. The optical fiber microporous plate 02 to be coupled is provided with second marking holes corresponding to the four first marking holes.

[0047] The intensifier adapter flange 1 is provided with four first positioning holes 9 evenly distributed around the circumference, which are used to form a first positioning reference coordinate system. The microporous plate adapter flange 5 is provided with second positioning holes 10 corresponding one-to-one to the first positioning holes 9, which are used to form a second positioning reference coordinate system. The second positioning reference coordinate system is used to cooperate with the first positioning reference coordinate system to achieve precise coupling between the integrated image intensifier 01 and the optical fiber microporous plate 02.

[0048] Reference Figures 3 to 5 A high-precision optical fiber microhole precision coupling method comprises the following steps:

[0049] Step 1, coupling of optical fiber microplate assembly;

[0050] Step 1.1, insert the pin bushings 11 into the second positioning holes 10 on the microplate adapter flange 5;

[0051] Step 1.2: Install the optical fiber microporous plate 02 to be coupled in the microporous plate outer frame 4, and install the microporous plate spacer 7 and the microporous plate pressing ring 6 in sequence to press the optical fiber microporous plate 02;

[0052] Step 1.3, install the microplate adjusting gasket 8 in the microplate adapter flange 5;

[0053] Step 1.4: Install the whole formed in step 1.2 into the whole formed in step 1.3, and screw through the microplate outer frame 4 and the microplate adjustment gasket 8 in sequence, and fix it in the second through hole on the microplate adapter flange 5 to complete the coupling of the optical fiber microplate assembly;

[0054] Step 2: Coupling of the integrated image intensifier assembly;

[0055] Step 2.1, glue is used to fix the integrated image intensifier 01 to be coupled to the intensifier housing 2, and the front end of the integrated image intensifier 01 protrudes from the intensifier housing by 22 mm;

[0056] Step 2.2: Finish turning the front end and outer circle of the intensifier housing 2 and the intensifier adapter flange 1 to ensure that the intensifier housing 2 and the intensifier adapter flange 1 can be coaxially installed and that the light cone coupling surface is in the designed position;

[0057] Step 2.3, install the intensifier adjustment gasket 3 and the intensifier adapter flange 1 on the intensifier housing 2 in sequence to complete the coupling of the integrated image intensifier assembly;

[0058] Step 3: Adjust the test;

[0059] Place the fiber optic microporous plate assembly obtained in step 1.4 and the integrated image intensifier assembly obtained in step 2.3 flatly on the test bench;

[0060] Step 3.2, use optical three-coordinate measurement to test the positions of the four first positioning holes 9 of the integrated image intensifier assembly, establish a first positioning reference coordinate system with the center of the circle where the four first positioning holes 9 are located as the reference point, and determine the coordinates of the centers of the four first positioning holes 9; use optical three-coordinate measurement to measure the positions of the four second positioning holes 10 on the microplate assembly, establish a second positioning reference coordinate system with the center of the circle where the four second positioning holes 10 are located as the reference point, and determine the coordinates of the centers of the four second positioning holes 10; compare the coordinates of the four first marking holes with the coordinates of the four second marking holes, and adjust them multiple times until the coordinates of the four first marking holes correspond to the coordinates of the four second marking holes one by one, and then coaxially assemble the optical fiber microplate assembly and the integrated image intensifier assembly through the pin sleeve 11 and the pin 12 to complete the coupling;

[0061] Alternatively, the integrated image intensifier assembly is placed flat and fixed on the test bench, and the position of the first positioning hole 9 of the integrated image intensifier assembly is tested by optical three-coordinate measurement. The center of the circle where the four first positioning holes 9 are located is used as the reference point to establish a first positioning reference coordinate system, and the coordinates of the four first marking holes are determined. The optical fiber microporous plate assembly and the integrated image intensifier assembly are coaxially assembled through the pin sleeve 11 and the pin 12, and the relative position is adjusted during assembly until the four first marking holes completely overlap with the four second marking holes, and the coupling is completed.

Claims

1. A high-precision fiber-optic microporous precision coupling device, comprising an integrated image intensifier assembly and a fiber-optic microporous plate assembly; characterized in that: The integrated image intensifier assembly comprises an intensifier housing (2) and an intensifier adapter flange (1) which are coaxially fixedly arranged in sequence from the inside to the outside; an intensifier adjustment washer (3) is provided in the axial gap between the intensifier housing (2) and the intensifier adapter flange (1); an integrated image intensifier (01) to be coupled is provided in the intensifier housing (2); and a plurality of first marking holes are provided on a light cone coupling surface of the integrated image intensifier (01) to be coupled; The optical fiber microporous plate assembly comprises a microporous plate outer frame (4) and a microporous plate adapter flange (5) which are coaxially fixed in sequence from the inside to the outside; a microporous plate adjusting gasket (8) is provided in the axial gap between the microporous plate outer frame (4) and the microporous plate adapter flange (5); a first inner convex ring is provided at one end of the microporous plate outer frame (4), and the end is used to be fixed to the microporous plate adapter flange (5); the optical fiber microporous plate (02) to be coupled is provided in the first inner convex ring, and a microporous plate pressing ring (6) is provided at the other end; a microporous plate spacer (7) is provided between the optical fiber microporous plate (02) to be coupled and the microporous plate pressing ring (6); and a second marking hole corresponding to a plurality of first marking holes is provided on the optical fiber microporous plate (02) to be coupled; The intensifier adapter flange (1) is provided with a plurality of first positioning holes (9) evenly distributed around the circumference, for forming a first positioning reference coordinate system; The microporous plate adapter flange (5) is provided with second positioning holes (10) corresponding one-to-one with the first positioning holes (9) for forming a second positioning reference coordinate system. The second positioning reference coordinate system is used to cooperate with the first positioning reference coordinate system to achieve precise coupling between the integrated image intensifier (01) and the optical fiber microporous plate (02).

2. The high-precision optical fiber microhole precision coupling device according to claim 1, characterized in that: The end face of the intensifier adapter flange (1) is provided with an axial convex ring, and the outer side wall of the intensifier housing (2) is provided with a first outer convex ring. The first outer convex ring and the axial convex ring are provided with a plurality of first through holes corresponding to each other, which are used to fix the intensifier housing (2) and the intensifier adapter flange (1).

3. The high-precision optical fiber microhole precision coupling device according to claim 2, characterized in that: The intensifier adjustment washer (3) is arranged between the first outer convex ring and the axial convex ring, and the intensifier adjustment washer (3) is provided with a plurality of through holes corresponding to the first through holes.

4. The high-precision optical fiber microhole precision coupling device according to claim 3, characterized in that: The outer side wall of the microplate outer frame (4) is provided with a second outer convex ring (42), and the inner side wall of the microplate adapter flange (5) is provided with a second inner convex ring (51). The second outer convex ring (42) and the second inner convex ring (51) are provided with a plurality of second through holes corresponding to each other, which are used to fix the microplate outer frame (4) and the microplate adapter flange (5).

5. The high-precision optical fiber microhole precision coupling device according to claim 4, characterized in that: The microplate adjusting washer (8) is arranged between the second outer convex ring (42) and the second inner convex ring (51), and the microplate adjusting washer (8) is provided with a plurality of through holes corresponding to the second through holes.

6. A high-precision optical fiber microhole precision coupling device according to any one of claims 1 to 5, characterized in that: The plurality of second positioning holes (10) are each provided with a pin shaft sleeve (11), and the plurality of first positioning holes (9) are each provided with a pin (12) adapted to the pin shaft sleeve (11).

7. A high-precision optical fiber microhole precision coupling method, using the high-precision optical fiber microhole precision coupling device according to claim 1, characterized in that: The steps include: Step 1, coupling of optical fiber microplate assembly; Step 1.1, insert the pin bushings (11) into the second positioning holes (10) on the microplate adapter flange (5); Step 1.2, install the optical fiber microporous plate (02) to be coupled in the microporous plate outer frame (4), and install the microporous plate spacer (7) and the microporous plate pressing ring (6) in sequence to press the optical fiber microporous plate (02); Step 1.3, installing the microplate adjustment gasket (8) in the microplate adapter flange (5); Step 1.4, install the whole formed in step 1.2 into the whole formed in step 1.3, and use screws to pass through the microplate outer frame (4) and the microplate adjustment gasket (8) in sequence, and fix it in the second through hole on the microplate adapter flange (5), thereby completing the coupling of the optical fiber microplate assembly; Step 2: Coupling of the integrated image intensifier assembly; Step 2.1, fixing the integrated image intensifier (01) to be coupled and the intensifier housing (2); Step 2.2, fine turning the front end surface and outer circle of the intensifier housing (2) and the intensifier adapter flange (1) to ensure that the intensifier housing (2) and the intensifier adapter flange (1) can be coaxially installed and the light cone coupling surface is at the designed position; Step 2.3, sequentially install the intensifier adjustment gasket (3) and the intensifier adapter flange (1) on the intensifier housing (2) to complete the coupling of the integrated image intensifier assembly; Step 3: Adjust the test; The optical fiber microporous plate assembly obtained in step 1.4 and the integrated image intensifier assembly obtained in step 2.3 are respectively placed flat and fixed on a test bench; a first positioning reference coordinate system and a second positioning reference coordinate system are respectively established with the center of the circle where the plurality of first positioning holes (9) are located and the center of the circle where the plurality of second positioning holes (10) are located as reference points, and the plurality of first marking holes and the plurality of second marking holes are aligned one by one, and then the optical fiber microporous plate assembly and the integrated image intensifier assembly are coaxially assembled to complete the coupling.

8. The high-precision optical fiber microhole precision coupling method according to claim 7, characterized in that: The step 2.1 specifically comprises: fixing the integrated image intensifier (01) to be coupled and the intensifier housing (2) with glue, and making the front end surface of the integrated image intensifier (01) protrude from the intensifier housing (2) by 2±0.1 mm.

9. A high-precision optical fiber microhole precision coupling method according to claim 7 or 8, characterized in that: The step 3 is specifically as follows: Step 3.1, placing the optical fiber microporous plate assembly obtained in step 1.4 and the integrated image intensifier assembly obtained in step 2.3 flatly and fixing them on the test bench respectively; Step 3.2, using optical three-coordinate measurement to test the positions of the multiple first positioning holes (9) of the integrated image intensifier assembly, using the center of the circle where the multiple first positioning holes (9) are located as the reference point, establishing a first positioning reference coordinate system, and determining the coordinates of the centers of the multiple first positioning holes (9); using optical three-coordinate measurement to measure the positions of the multiple second positioning holes (10) on the microplate assembly, using the center of the circle where the multiple second positioning holes (10) are located as the reference point, establishing a second positioning reference coordinate system, and determining the coordinates of the centers of the multiple second positioning holes (10); comparing the coordinates of the multiple first marking holes with the coordinates of the multiple second marking holes, and adjusting them multiple times until the coordinates of the multiple first marking holes correspond to the coordinates of the multiple second marking holes one by one, and then coaxially assembling the optical fiber microplate assembly and the integrated image intensifier assembly to complete the coupling; Alternatively, the integrated image intensifier assembly is placed flat and fixed on a test bench, the position of the first positioning hole (9) of the integrated image intensifier assembly is tested using optical three-coordinate measurement, a first positioning reference coordinate system is established with the center of a circle where the plurality of first positioning holes (9) are located as a reference point, and the coordinates of the plurality of first marking holes are determined, the optical fiber microplate assembly and the integrated image intensifier assembly are coaxially assembled, and the relative positions are adjusted during assembly until the plurality of first marking holes completely overlap with the plurality of second marking holes, thereby completing coupling.

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