Observation device and method for manufacturing an observation device

Abstract

The embodiment of the application provides an observation device and a manufacturing method of the observation device. The observation device comprises: a fixed cover, one side of which is provided with an opening, and the other side of which is provided with N observation holes, and a quartz glass window is embedded in each observation hole; N groups of objective lens assemblies, which are respectively fixed to one side of the quartz glass window in the N observation holes and face the inside of the fixed cover; N bundles of optical fiber image transmission bundles, the first ends of which are respectively connected to one side of the N groups of objective lens assemblies facing the inside of the fixed cover, the extension sections on the side away from the first ends of the N bundles of optical fiber image transmission bundles are arranged to pass through the opening, and the second ends of the N bundles of optical fiber image transmission bundles are spliced to form an output end face; an armored sheath, which is connected to the side of the fixed cover provided with the opening and wraps a first sub-section of the extension section of the optical fiber image transmission bundle close to the fixed cover; an eyepiece assembly, which is connected to the output end face; and a display assembly, which is arranged on the side of the eyepiece assembly away from the optical fiber image transmission bundle. The fixed cover and the armored sheath are made of tungsten-iron alloy. The observation device can realize imaging observation in a harsh environment such as high temperature and high radiation.

Description

Technical Field

[0001] This application relates to the field of optical technology, and in particular to observation devices and methods for manufacturing such devices. Background Technology

[0002] Imaging observation technology has long been widely and significantly applied in numerous fields, including aerospace, nuclear energy development, biomedicine, and industrial lighting. Currently, the main devices used for imaging observation include traditional optical imaging systems such as microscopes and telescopes, CCD (Charge-Coupled Device) observation devices, and emerging CMOS (Complementary Metal Oxide Semiconductor) observation devices.

[0003] Conventional CCD and CMOS observation devices typically include photosensitive elements and analog-to-digital converter (ADC) chips. The photosensitive element, made of highly sensitive semiconductor material, converts light signals into electrical signals. The electrical signal output from the photosensitive element is then converted into a digital signal by the ADC chip, and finally processed by a computer to form an image. However, because these devices involve photoelectric conversion, they cannot operate in harsh environments such as electromagnetic fields, nuclear radiation, or high temperatures.

[0004] Therefore, there is an urgent need to provide an observation device that can perform imaging observations in harsh environments such as electromagnetic fields, nuclear radiation, and high temperatures. Summary of the Invention

[0005] The purpose of this application is to provide an observation device and a method for manufacturing the observation device, so as to achieve imaging observation in harsh environments such as high temperature and high radiation. The specific technical solution is as follows:

[0006] Firstly, this application provides an observation device, including...

[0007] A fixed cover, wherein one side of the fixed cover has an opening and the other side has N observation holes, wherein the N observation holes are fitted with quartz glass windows, and N is a natural number greater than or equal to 1;

[0008] N sets of objective lens assemblies are respectively fixed to the side of the quartz glass window facing the inside of the fixing cover in the N observation holes;

[0009] N fiber optic image transmission bundles, the first ends of the N fiber optic image transmission bundles are respectively connected to the side of the N objective lens assemblies facing the inside of the fixing cover; the extensions of the N fiber optic image transmission bundles away from the first ends protrude from the opening, and the second ends of the N fiber optic image transmission bundles are spliced ​​together to form an output end face.

[0010] An armored sheath is attached to the side of the fixed cover with the opening, and wraps around the first sub-segment of the extension of the N fiber optic image bundles near the fixed cover.

[0011] The eyepiece assembly is connected to the output end face of the N fiber optic image transmission bundles;

[0012] The display component is disposed on the side of the eyepiece assembly away from the optical fiber image bundle;

[0013] The fixing cover and the armor sleeve are made of tungsten iron alloy.

[0014] Optionally, the fixing cover is hemispherical, the N observation holes are distributed on the hemispherical surface of the hemisphere, and the opening is located on the bottom surface of the hemisphere; the projection of the N observation holes on the bottom surface is arranged in a first hexagonal array.

[0015] Optionally, the output end face has a hexagonal structure, and the second ends of the N fiber image transmission bundles are arranged in a second hexagonal array; wherein, the relative position of an observation hole in the first hexagonal array is consistent with the relative position of the second end of the fiber image transmission bundle connected to the first objective lens assembly in the second hexagonal array, and the first objective lens assembly is an objective lens assembly fixed to the side of the quartz glass window facing the inside of the fixed cover within the observation hole.

[0016] Optionally, each of the optical fiber image bundles includes multiple pixel monofilaments, each pixel monofilament including a quartz fiber core and a fluorine-doped cladding surrounding the quartz fiber core.

[0017] Optionally, each of the optical fiber image bundles includes the extension segment and the built-in segment located within the fixing cover. The extension segment includes a first sub-segment, a second sub-segment near the second end, and a third sub-segment located between the first sub-segment and the second sub-segment. The third sub-segment is wrapped with a polyimide coating, while the built-in segment, the first sub-segment, and the second sub-segment are not wrapped with a polyimide coating.

[0018] Secondly, this application provides a method for manufacturing an observation device, comprising:

[0019] Prepare a fixing cover, wherein one side of the fixing cover has an opening and the other side has N observation holes, where N is a natural number greater than or equal to 1;

[0020] Quartz glass windows are embedded in the N observation holes;

[0021] The fixed cover, N objective lens assemblies, and N fiber optic image transmission bundles are assembled such that the N objective lens assemblies are respectively fixed to the side of the quartz glass window in the N observation holes facing the inside of the fixed cover, the first end of the N fiber optic image transmission bundles is respectively connected to the side of the N objective lens assemblies facing the inside of the fixed cover, and the extension of the N fiber optic image transmission bundles away from the first end protrudes from the opening.

[0022] The second ends of the N fiber optic image bundles are spliced ​​and fixed to form the output end face;

[0023] The N fiber optic image bundles are inserted into the armor sheath, and the armor sheath is connected to the side of the fixing cover with the opening; the armor sheath covers the first sub-segment of the extension of the N fiber optic image bundles near the fixing cover.

[0024] Connect the output end face of the N fiber image transmission bundles to the eyepiece assembly;

[0025] A display component is disposed on the side of the eyepiece assembly away from the optical fiber image bundle;

[0026] The fixing cover and the armor sleeve are made of tungsten iron alloy.

[0027] Optionally, the fiber optic image bundle is manufactured based on the following process:

[0028] Using oxygen, silicon tetrafluoride, and silicon tetrachloride as raw materials, a fluorine-doped coating is deposited on the inner wall of a quartz deposition tube through plasma vapor deposition.

[0029] A quartz fiber core tube is inserted into the fluorine-doped cladding, and then a melting and shrinking compaction process is performed to obtain the first preform.

[0030] Grind away the outermost quartz deposition tube of the first preform to obtain the pixel preform;

[0031] The pixel preform is drawn to obtain a pixel monofilament;

[0032] Multiple pixel monofilaments are arranged inside a quartz outer tube to obtain an image transmission bundle preform.

[0033] The image transmission bundle preform is drawn to obtain the optical fiber image transmission bundle.

[0034] Optionally, the method further includes:

[0035] During the drawing process of the image bundle preform, a polyimide coating is applied to its surface, and after curing, a polyimide coating is formed.

[0036] Optionally, before assembling the fixing cover, the N objective lens assemblies, and the N fiber image transmission bundles, the method further includes:

[0037] Remove the polyimide coating from the inner section of the optical fiber image bundle and the first sub-segment on the side near the inner section of the extension section; the inner section is used to be disposed inside the fixing cover;

[0038] Before splicing and fixing the second ends of the N fiber optic image bundles, the method further includes:

[0039] Remove the polyimide coating that wraps around the second segment of the optical fiber image bundle near the second end.

[0040] Optionally, during the deposition of the fluorine-doped coating, the flow rates of oxygen, silicon tetrafluoride, and silicon tetrachloride are 1850 sccm–2350 sccm, 30 sccm–130 sccm, and 1050 sccm–1650 sccm, respectively, and the deposition reaction temperature is 900°C–1100°C.

[0041] The beneficial effects of this application are:

[0042] The observation device and its manufacturing method provided in this application include a fixed cover with a first opening on one side and N observation holes on the other side, each observation hole containing a quartz glass window; N objective lens assemblies are respectively fixed to the side of the N observation holes facing the inside of the fixed cover, and the side of each objective lens assembly facing the inside of the fixed cover is connected to the first end of the fiber optic image bundle; the extensions of the N fiber optic image bundles away from the first end protrude from the opening on the fixed cover, and the second ends of the N fiber optic image bundles are spliced ​​together to form an output end face; an armor sleeve is connected to the side of the fixed cover with the opening, covering the first sub-segment of the extensions of the N fiber optic image bundles near the fixed cover; an eyepiece assembly is connected to the output end face of the N fiber optic image bundles, and a display assembly is disposed on the side of the eyepiece assembly away from the fiber optic image bundles.

[0043] In the aforementioned observation device, optical signals are transmitted between the objective lens assembly and the eyepiece assembly via an optical fiber image transmission bundle, spatially separating the front-end image acquisition unit (fixed housing and objective lens assembly) from the rear-end imaging unit (eyepiece assembly and display assembly). The front-end fixed housing and armor are made of tungsten-iron alloy, while the quartz glass window on the fixed housing and the optical fiber image transmission bundle are made of quartz. Both tungsten-iron alloy and quartz possess high-temperature resistance and radiation resistance. Therefore, in actual use, the front-end fixed housing and armor can be placed in harsh environments with high temperature, high radiation, or strong magnetic fields, while the rear-end eyepiece assembly and display assembly can be placed in a milder environment. The objective lens assembly acquires images through the quartz glass window in harsh environments and transmits the acquired images in real-time to the milder environment containing the eyepiece assembly and display assembly via the optical fiber image transmission bundle. The display assembly then displays the images in the milder environment, enabling real-time observation even in harsh environments with high temperature, high radiation, or strong magnetic fields.

[0044] Of course, implementing any product or method of this application does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained based on these drawings.

[0046] Figure 1 A schematic diagram of the observation device provided in the embodiments of this application;

[0047] Figure 2 A schematic diagram illustrating the positional relationship between the internal fixing cover, objective lens assembly, and fiber optic image transmission bundle of the observation device provided in this embodiment of the application.

[0048] Figure 3 A top view showing the positional relationship between the fixing cover and the observation hole provided in an embodiment of this application;

[0049] Figure 4 A schematic diagram of an output end face formed by splicing the second ends of the optical fiber image transmission bundles provided in an embodiment of this application;

[0050] Figure 5 A schematic diagram illustrating the correspondence between the observation hole and the output end of the optical fiber image transmission bundle provided in an embodiment of this application;

[0051] Figure 6This is a schematic diagram of a quartz outer tube provided in an embodiment of this application;

[0052] Figure 7 This is a schematic diagram of an end face structure of an optical fiber image bundle provided in an embodiment of this application.

[0053] Figure label:

[0054] Fixed cover-1, armored sleeve-2, objective lens assembly-3, fiber optic image bundle-4, eyepiece assembly-5, CCD imaging module-6, display screen-7; observation hole-11, opening-12, built-in section-41, extension section-42, first sub-segment-42a, second sub-segment-42b, third sub-segment-42c, output end face-43, pixel monofilament-44, quartz outer tube-45. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art based on this application are within the scope of protection of this application.

[0056] To enable imaging observations in harsh environments such as high temperature and high radiation, this application provides an observation device.

[0057] Figure 1 This is a schematic diagram of the observation device provided in an embodiment of this application. Figure 2 This is a schematic diagram illustrating the positional relationship between the internal fixing cover, objective lens assembly, and fiber optic image transmission bundle of the observation device provided in this embodiment of the application. Figure 1 and Figure 2 As shown, the observation device includes: a fixed cover 1, an armored sleeve 2, an objective lens assembly 3, an optical fiber image transmission bundle 4, an eyepiece assembly 5, and a display assembly.

[0058] The fixed cover 1 has an opening 12 on one side and N observation holes 11 on the other side. Each of the N observation holes 11 has a quartz glass window embedded in it, where N is a natural number greater than or equal to 1.

[0059] There are N sets of objective lens assemblies 3, each corresponding to one of the N observation holes 11, and each fixed to the side of the quartz glass window facing the inside of the fixing cover 1 within the N observation holes 11. Each objective lens assembly 3 can collect light signals from the environment outside the fixing cover 1 through the quartz glass window embedded in the corresponding observation hole 11. Each objective lens assembly 3 can be a lens or a lens group, depending on the actual requirements.

[0060] In practical applications, the shape of the fixed cover 1, the number of observation holes 11 on the fixed cover 1, and the distribution of the observation holes 11 on the fixed cover 1 can be designed according to actual needs, so as to acquire scene images of a specific orientation in the environment through the objective lens assembly 3. This application embodiment does not limit this. In one example, it can be as follows: Figure 1 and Figure 2 As illustrated, the fixed cover 1 is set as a hemisphere, and multiple observation holes 11 are opened at different positions on its hemisphere so as to collect scene images from different directions in the environment through the objective lens assembly 3.

[0061] In one example, the quartz glass window and the objective lens assembly 3 can be fixed together by threaded fastening.

[0062] There are N fiber optic image transmission bundles 4, which correspond one-to-one with N sets of objective lens assemblies 3. The first ends of the N fiber optic image transmission bundles 4 are respectively connected to the side of the N sets of objective lens assemblies 3 facing the inside of the fixing cover 1. The extension section 42 of the N fiber optic image transmission bundles 4 away from the first end passes through the opening 12, and the second ends of the N fiber optic image transmission bundles 4 are spliced ​​together to form the output end face 43.

[0063] Specifically, an optical fiber image bundle is an optical image transmission device composed of multiple optical fibers arranged in a fixed spatial manner, which can realize long-distance image transmission, and each optical fiber contained in the optical fiber image bundle is called a pixel monofilament.

[0064] In the observation device provided in this application embodiment, the light signals collected by each group of objective lens assemblies 3 enter the corresponding optical fiber image transmission bundle 4 from the first end of the bundle and are transmitted along the bundle to its second end, which is the output end of the bundle. Thus, the output signal of the entire output end face 43 formed by splicing the output ends of each optical fiber image transmission bundle 4 contains the image information collected by N groups of objective lens assemblies 3. The specific size of the optical fiber image transmission bundle 4, the number of pixel filaments within the bundle, and their arrangement can be set according to actual needs, and this application embodiment does not impose any limitations on these aspects.

[0065] In one example, the first end of the optical fiber image bundle 4 can be connected to the objective lens assembly 3 by a fastening connection, and the end face of the first end of the optical fiber image bundle 4 can be fixed on the image plane of the objective lens assembly 3.

[0066] The eyepiece assembly 5 is connected to the output end face 43 of the N fiber image transmission bundles 4, while the display assembly is located on the side of the eyepiece assembly 5 away from the fiber image transmission bundles 4. The eyepiece assembly 5 is used to further transmit the optical signal output from the output end face 43 to the display assembly, which then displays an image based on the received optical signal.

[0067] The eyepiece assembly 5 can be a lens or a lens group, depending on the actual needs.

[0068] In one example, see Figure 1 As illustrated, the display components may include a CCD imaging module 6 and a display screen 7. The CCD imaging module 6 is used to convert the light signal transmitted by the eyepiece assembly 5 into an electrical signal, and the display screen 7 is used to display an image based on the electrical signal output by the CCD imaging module 6.

[0069] In one example, the output end face 43 can be connected to the eyepiece assembly 5 via a fastening connection. Alternatively, the eyepiece assembly 5 can be fastened to the CCD imaging module 6 via a connecting sleeve, fixing the CCD imaging module 6 to the image plane of the eyepiece assembly 5. The CCD imaging module 6 and the display screen 7 can then be connected via a cable.

[0070] The armor sheath 2 is connected to the side of the fixed cover 1 with the opening 12, and wraps the first sub-segment 42a of the extension 42 of the N fiber optic image bundles 4 near the fixed cover 1.

[0071] In the observation device provided in this application embodiment, a portion of each optical fiber image bundle 4 near the first end is located inside the fixing cover 1, while the remaining portion protrudes from the opening 12 of the fixing cover 1 and is located outside the fixing cover 1. In this application embodiment, the portion of the optical fiber image bundle 4 located inside the fixing cover 1 is referred to as the built-in segment 41, and the portion of the optical fiber image bundle 4 located outside the fixing cover 1 is referred to as the extension segment 42. The armor sheath 2 only covers a portion of the extension segment 42 near the fixing cover 1, and this portion is referred to as the first sub-segment 42a.

[0072] In this embodiment, both the fixing cover 1 and the armor sleeve 2 are made of tungsten iron alloy.

[0073] In the actual use of the above-mentioned observation components, the N sets of objective lens assemblies 3 acquire scene images of the external environment through the quartz glass window on the fixed cover 1, and transmit the acquired images to the first end of the corresponding optical fiber image bundle 4, thereby realizing image acquisition of the external environment. For each of the N optical fiber image bundles 4, the optical signal in the optical fiber image bundle 4 is transmitted along the optical fiber image bundle 4 and output at the corresponding position on the output end face 43, that is, the second end of the optical fiber image bundle 4. The output image of the output end face 43 is collected and magnified by the eyepiece assembly 5 and then transmitted to the display assembly, so that the display assembly can reproduce the scene images acquired by the N sets of objective lens assemblies 3 respectively.

[0074] In the observation device provided in this application embodiment, optical signals are transmitted between the objective lens assembly 3 and the eyepiece assembly 5 via an optical fiber image transmission bundle 4, so that the front-end fixed cover 1 and objective lens assembly 3 used for image acquisition are spatially separated from the rear-end eyepiece assembly 5 and display assembly used for imaging. The front-end fixed cover 1 and armor sleeve 2 are both made of tungsten iron alloy, while the quartz glass window on the fixed cover 1 and the optical fiber image transmission bundle 4 used for image transmission are made of quartz material. The maximum operating temperature of tungsten iron alloy and quartz material can reach 1500℃ (degrees Celsius), and both have radiation-resistant properties. Therefore, in the actual use of the observation device, the front-end fixed cover 1 and armor sleeve 2 can be placed in harsh environments with high temperature, high radiation, or strong magnetic fields, while the rear-end eyepiece assembly 5 and display assembly can be placed in a mild environment. The objective lens assembly 3 acquires images of harsh environments through a quartz glass window, and transmits the acquired images in real time to the eyepiece assembly 5 and the mild environment where the display assembly is located via the fiber optic image transmission bundle 4. The display assembly then displays the images in the mild environment, thereby enabling real-time observation of harsh environments such as high temperature, high radiation, or strong magnetic fields.

[0075] Furthermore, in practical applications, the length of the armor sleeve 2 and the length of the fiber optic image transmission bundle 4 can be set according to actual needs, and this application embodiment does not limit this. Specifically, the longer the armor sleeve 2, the easier it is to observe scene images deeper in harsh environments through the observation device; the longer the fiber optic image transmission bundle 4, the easier it is for the fiber optic image transmission bundle 4 to transmit the images acquired by the objective lens assembly 3 to a milder environment farther away from the location of the objective lens assembly 3.

[0076] In some embodiments of this application, such as Figure 1 and Figure 2 As illustrated, the mounting cover 1 can be configured as a hemisphere, with N observation holes 11 distributed on the hemispherical surface. The opening 12 of the mounting cover 1 is located on the bottom surface of the hemisphere, and the projections of the N observation holes 11 onto the bottom surface of the hemisphere are arranged in a first hexagonal array. By configuring the mounting cover 1 as a hemisphere and arranging the projections of the observation holes 11 onto the bottom surface of the hemisphere in a hexagonal array, it is helpful to achieve a large field of view image acquisition of the environment outside the mounting cover 1 through the objective lens assembly 3, avoiding blind spots in observation.

[0077] For example, in practical applications, to arrange the observation holes 11 in a hexagonal array on the hemispherical surface of the fixed cover 1, the number N of observation holes 11 can be 7, with one observation hole 11 located at the center of the hemisphere, and the other six observation holes 11 surrounding the one observation hole 11 in a hexagonal shape; alternatively, the number N of observation holes 11 can be 19, and the distribution of these 19 observation holes 11 can be referred to Figure 3Of course, N can also be set to other values ​​to ensure that each observation hole 11 is arranged in a hexagonal array on the hemisphere of the fixed cover 1, and that the output ends of each fiber optic image bundle 4 located behind each observation hole 11 can be spliced ​​into a hexagonal output end face.

[0078] Figure 3 A top view showing the positional relationship between the fixing cover 1 and the observation hole 11 provided in an embodiment of this application is shown. Figure 3 In the schematic diagram, the fixed cover 1 has 19 observation holes 11, one of which is located at the center of the circle in the top view, and the other 18 observation holes 11 are distributed at the vertices of three different hexagons centered on the circle. By adopting... Figure 3 The schematic arrangement of the observation port 11 facilitates the observation of the entire spatial field of view of the external environment of the fixed cover 1 through the objective lens assembly 3, achieving full-field image acquisition. Correspondingly, when following... Figure 3 When 19 observation holes 11 are opened on the fixed cover 1, it is necessary to set up 19 sets of objective lens assemblies 3 with quartz glass windows embedded in each observation hole 11 facing the inside of the fixed cover 1, and 19 fiber optic image transmission bundles 4 connected to the 19 sets of objective lens assemblies 3 respectively.

[0079] In some embodiments of this application, when the fixed cover 1 is hemispherical and the projection of each observation hole 11 on the bottom surface of the fixed cover 1 is arranged in a first hexagonal array, the output end face 43 formed by splicing the second ends of the N fiber image bundles 4 is also hexagonal, and the second ends of the N fiber image bundles 4 are arranged in a second hexagonal array.

[0080] In this embodiment, for each of the N observation holes 11, the relative position of an observation hole 11 in the first hexagonal array is consistent with the relative position of the second end of the fiber optic image bundle 4 connected to the corresponding first objective lens assembly 3 in the second hexagonal array. The corresponding first objective lens assembly 3 refers to the objective lens assembly 3 fixed to the side of the quartz glass window facing the inside of the fixed cover 1 within that observation hole 11. Specifically, the projections of the N observation holes 11 onto the hemispherical bottom surface of the fixed cover 1 are arranged in a hexagonal array, which means that the projections of the N sets of objective lens assemblies 3 onto the hemispherical bottom surface are also arranged in a hexagonal array. Therefore, in this embodiment, the arrangement of the N sets of objective lens assemblies 3 in the top view direction of the fixed cover 1 is consistent with and corresponds one-to-one with the arrangement of the second ends of the N fiber optic image bundles 4 as output ends. In this configuration, after the scene images acquired by each objective lens assembly 3 are transmitted to the output end face 43 along the corresponding optical fiber image bundle 4, the relative positional relationship of the scene images acquired by different objective lens assemblies 3 on the entire output end face 43 is basically consistent with the relative positional relationship of these scene images in the environment. This helps to ensure the synchronous transmission of images in the same direction area and prevent image confusion.

[0081] In one example, when splicing the second ends of N fiber image bundles 4 to form an output end face 43 with a hexagonal structure, in order to minimize the gap between adjacent fiber image bundles 4, fiber image bundles 4 with a regular hexagonal cross-section can be selected.

[0082] Figure 4 This shows that when N is 19, the following is used: Figure 3 This diagram illustrates an output end face 43 formed by splicing the second ends of each fiber optic image transmission bundle 4 together, with observation holes 11 provided on the fixed cover 1. It can be seen that the second ends of a total of 19 fiber optic image transmission bundles 4 are spliced ​​together to form the output end face 43, which is also arranged in a regular hexagonal structure. The first and fifth rows each have three fiber optic image transmission bundles 4, the second and fourth rows each have four fiber optic image transmission bundles 4, and the third row has five fiber optic image transmission bundles 4.

[0083] Figure 5 It shows Figure 3 Each observation hole 11 and Figure 4 This is a schematic diagram showing the correspondence between the output ends of each fiber optic image transmission bundle 4, i.e., the second end. The 19 observation holes 11 on the left are sequentially labeled a to s, and the output ends of the 19 fiber optic image transmission bundles 4 on the right are also sequentially labeled a to s. The fiber optic image transmission bundle 4 with its output end labeled a is connected to the objective lens assembly 3 located behind the observation hole 11 labeled a; the fiber optic image transmission bundle 4 with its output end labeled b is connected to the objective lens assembly 3 located behind the observation hole 11 labeled b, and so on. Thus, in Figure 5In the schematic diagram, the arrangement of the 19 imaging structures in the top view of the fixed cover 1 is consistent with and corresponds one-to-one with the arrangement of the output ends of the 19 optical fiber image bundles 4.

[0084] In one example, an optical fiber image bundle with a regular hexagonal cross-section, a face-to-face diameter d1 of 1 mm, containing 10,000 pixel filaments, each filament having a diameter of 8 μm, can be selected in the observation device. In this case, based on... Figure 4 The face-to-face diameter d2 of the output end face formed by the Chinese splicing method is 4.62mm, and the resolution reaches 70Lp / mm (line pairs per millimeter).

[0085] In some embodiments of this application, each optical fiber image bundle 4 contains multiple pixel monofilaments, each pixel monofilament including a quartz fiber core and a fluorine-doped cladding covering the quartz fiber core.

[0086] Specifically, under high-energy radiation, atoms within a silica optical fiber ionize into electron-hole pairs. When these electron-hole pairs are captured by intrinsic defects, doped defects, or impurity defects in the fiber, color centers such as non-bridging oxygen hole defect centers (NBOHC) and silicon-oxygen dangling bond defect centers (Si-E') are generated. These color centers cause light absorption in the material, leading to a significant increase in fiber attenuation.

[0087] In quartz materials, fluorine exists as [SiO] 3 / 2 F], [SiO 4 / 2 F] and other forms enter the material network, including [SiO] 3 / 2 The [F] group can depolymerize the siloxane ring structure. By wrapping the quartz core of the optical fiber image bundle 4 with a fluorine-doped cladding, the siloxane ring structure groups within the quartz material can be reduced or even eliminated, thereby promoting structural relaxation in the quartz. Since siloxane ring structures typically serve as precursors for NBOHC and Si-E', wrapping the quartz core of the optical fiber image bundle 4 with a fluorine-doped cladding can effectively improve the radiation resistance of the optical fiber image bundle 4, ultimately meeting the requirement of a cumulative radiation dose of 10. 6 The environmental requirements of Gray ensure that the observation device provided in this application embodiment can be used stably in high-radiation environments.

[0088] In some embodiments of this application, each fiber optic image bundle 4 includes an extension segment 42 and an extension segment 42 located within a fixing housing 1. The extension segment 42 includes a first sub-segment 42a, a second sub-segment 42b near the second end, and a third sub-segment 42c located between the first sub-segment 42a and the second sub-segment 42b. The third sub-segment 42c is coated with a polyimide coating, while the inner segment 41, the first sub-segment 42a, and the second sub-segment 42b are not coated with a polyimide coating.

[0089] Specifically, by coating the fiber optic image bundle 4 with a polyimide coating, the flexibility and strength of the fiber optic image bundle 4 can be improved, making it less prone to breakage. However, because the polyimide coating material is not heat-resistant, the operating temperature of the part of the fiber optic image bundle 4 with the polyimide coating can only reach 300℃, while the operating temperature of the part of the fiber optic image bundle 4 without the polyimide coating can reach as high as 1500℃.

[0090] Considering the high-temperature resistance of polyimide coating, this embodiment does not apply a polyimide coating to the extension 42 within the fixed cover 1 and the first segment 42a encased in the armor sleeve 2 on the optical fiber image bundle 4. This ensures that users can place the fixed cover 1 and the armor sleeve 2 of the observation device in high-temperature environments during use, enabling observations in high-temperature environments. In this case, the armor sleeve 2 serves two purposes: firstly, it protects the first segment 42a on the optical fiber image bundle 4 that is not coated with polyimide, preventing breakage; secondly, it facilitates user differentiation between high-temperature resistant and non-high-temperature resistant parts of the observation device, allowing users to avoid placing parts other than the armor sleeve 2 in high-temperature environments during use, ensuring that the polyimide-coated portion of the optical fiber image bundle 4 is kept away from high-temperature heat sources.

[0091] Furthermore, in practical applications, to splice the second ends of each optical fiber image bundle 4 together to form the output end face 43, it is generally necessary to perform high-temperature heat fusion fixation on a small section of each optical fiber image bundle 4 near its second end, so that the second ends of each optical fiber image bundle 4 are spliced ​​together to form a whole. Those skilled in the art will understand that on the output end face 43 formed by splicing the second ends of each optical fiber image bundle 4 together, only the area occupied by the core portion of the pixel filament within the optical fiber image bundle 4 contributes to light transmission; the other areas do not. Therefore, in this embodiment, the second sub-segment 42b near the second end on the extension section 42 of each optical fiber image bundle 4 is not coated with a polyimide coating, which helps to increase the effective light transmission area ratio of the output end face 43, thereby helping to improve the brightness of the image observed by the observation device and ensuring image quality.

[0092] The third sub-segment 42c, located between the first sub-segment 42a and the second sub-segment 42b on the extension 42 of the fiber optic image bundle 4, is wrapped with a polyimide coating. This helps to ensure the flexibility and strength of the third sub-segment 42c, allowing the user to bend the third sub-segment 42c during use and flexibly set the positions of the front fixing cover 1 and the rear eyepiece assembly 5 and display assembly.

[0093] In one example, a metal sheath can be wrapped around the second sub-segment 42b on the N-beam optical fiber image bundle 4 to protect the second sub-segment 42b and prevent it from breaking.

[0094] In one example, a control algorithm can be integrated into the processing module of the display screen 7. Specifically, the CCD imaging module 6 typically has a photosensitive surface for photoelectric conversion, and this photosensitive surface contains multiple independently arranged photosensitive units in an array. The light signals collected by the N objective lens assemblies 3 are then transmitted to different regions of this photosensitive surface. The specific region corresponding to each objective lens assembly 3 can be obtained through optical path analysis. Based on this principle, the display screen 7 can use the control algorithm integrated into the processing module to uniformly or independently control the scene images collected by the N objective lens assemblies 3. This allows it to display only the scene images collected by one or more specific objective lens assemblies 3 from the N objective lens assemblies, achieving image presentation at a fixed point and orientation.

[0095] Furthermore, image stitching and deduplication algorithms can be integrated into the processing module of the display screen 7 to achieve seamless stitching of scene images acquired separately by the N objective lens components 3, thus realizing full-field image reproduction. Specific image stitching and deduplication algorithms can be found in relevant technical documents and will not be elaborated upon here.

[0096] As can be seen from the foregoing description, the observation device provided in the above embodiments of this application uses high-temperature resistant inorganic materials for its front-end fixing cover 1, armor sleeve 2, objective lens assembly 3, and fiber optic image transmission bundle 4. It contains no electronic components or detectors, and therefore can withstand high-temperature environments of 1500℃ and 10... 6 Stable operation in high-radiation environments (Gy). Furthermore, compared to traditional optical imaging systems, the observation device provided in the above embodiments of this application also features flexibility, light weight, high degree of freedom of use, and ease of image transmission across complex spatial structures.

[0097] In addition, by designing the fixed cover 1 as a hemispherical shape and setting multiple quartz glass windows distributed at different positions on its hemispherical surface, the observation device can also realize real-time monitoring of the entire field of view in space.

[0098] Considering the above-mentioned characteristics of the observation device provided in the above embodiments of this application, in practical applications, the observation device can be specifically applied to fields such as space satellite observation, nuclear power facility monitoring, and actual observation of engine and internal combustion engine combustion chambers.

[0099] Based on the same inventive concept, this application also provides a method for manufacturing an observation device, which can be used to manufacture the observation device provided in the foregoing embodiments of this application. The method includes the following steps:

[0100] Step S11: Prepare a fixing cover 1. The fixing cover 1 has an opening 12 on one side and N observation holes 11 on the other side, where N is a natural number greater than or equal to 1.

[0101] Step S12: Install quartz glass windows in the N observation holes 11.

[0102] Step S13: Assemble the fixed cover 1, N sets of objective lens assemblies 3 and N fiber optic image transmission bundles 4, so that the N sets of objective lens assemblies 3 are respectively fixed in the quartz glass windows of the N observation holes 11 facing the inside of the fixed cover 1, the first ends of the N fiber optic image transmission bundles 4 are respectively connected to the side of the N sets of objective lens assemblies 3 facing the inside of the fixed cover 1, and the extension section 42 of the N fiber optic image transmission bundles 4 away from the first end passes through the opening 12.

[0103] In practical applications, the fiber optic image bundle 4 can be trimmed according to actual needs so that the length of the N fiber optic image bundles 4 in the observation device meets the requirements. For example, a longer fiber optic image bundle 4 can be taken first, and then the fiber optic image bundle 4 can be trimmed into N fiber optic image bundles 4 of the same length, with a length between 0.5 meters and 10 meters.

[0104] by Figure 2 Taking the schematic structure as an example, before connecting the fiber optic image bundle 4 to the objective lens assembly 3, a section of the fiber optic image bundle 4 near the first end can be bent and shaped at a high temperature to assemble the fiber optic image bundle 4 with the objective lens assembly 3 at a specific position on the hemispherical surface. In one example, the bending and shaping of the fiber optic image bundle 4 can be performed under a flame at 1800°C.

[0105] In one example, the end face of each fiber image bundle 4 at the first end can be ground and polished to ensure that the end face is flat before connecting the objective lens assembly 3 and the fiber image bundle 4.

[0106] Step S14: Splice and fix the second end of the N fiber image bundles 4 to form the output end face 43.

[0107] In one example, the second ends of the N fiber optic image bundles 4 can be arranged according to a pre-designed pattern, for example, according to... Figure 4 The diagram illustrates the arrangement of the second ends of the N fiber image bundles 4, followed by clamping each fiber image bundle 4 with a special mold and hot-melting and fixing the second ends of each fiber image bundle 4, so that the end parts of each fiber image bundle 4 are thermally fused into a whole to form the output end face 43.

[0108] After the output end face 43 is formed, the output end face 43 can be polished as a whole before connecting the output end face 43 and the eyepiece assembly 5.

[0109] Step S15: Insert the N fiber optic image bundles 4 into the armor sleeve 2, and connect the armor sleeve 2 to the side of the fixed cover 1 with the opening 12; the armor sleeve 2 wraps around the first sub-segment 42a of the extension section 42 of the N fiber optic image bundles 4 near the fixed cover 1.

[0110] In one example, the connection between the fixed cover 1 and the armored sleeve 2 can be achieved by welding.

[0111] Step S16: Connect the output end face 43 of the N fiber image bundles 4 to the eyepiece assembly 5.

[0112] Step S17: Set up a display component on the side of the eyepiece assembly 5 away from the optical fiber image bundle 4.

[0113] The fixing cover 1 and the armor sleeve 2 are made of tungsten iron alloy.

[0114] As can be seen from the above description, the observation device system provided in the foregoing embodiments of this application has a simple structure, low assembly difficulty in the manufacturing process, strong operability, and can meet the preparation conditions for large-scale production.

[0115] For more information on the above-mentioned observation device and its beneficial effects, please refer to the description of the observation device embodiment above, which will not be repeated here.

[0116] In some embodiments of this application, the fiber optic image bundle 4 used in the above-described observation device is manufactured based on the following process:

[0117] Step S21: Using oxygen, silicon tetrafluoride, and silicon tetrachloride as raw material gases, a fluorine-doped cladding layer is deposited on the inner wall of a quartz deposition tube through plasma vapor deposition.

[0118] Specifically, since the radius of a fluorine atom is smaller than that of an oxygen atom, introducing fluorine into the quartz matrix can reduce the refractive index of the material. According to the optical fiber guiding principle, when the refractive index of the fiber core is higher than that of the cladding, the optical signal can be confined within the core, thereby enabling signal transmission. Since pure quartz is composed of SiO2, this application uses SiCl4 (silicon tetrachloride) and O2 (oxygen) as raw materials. Under the action of plasma, SiO2 and Cl2 are reacted to generate SiO2 and Cl2. Simultaneously, SiF4 (silicon tetrafluoride) is introduced during the reaction, allowing fluorine to enter the SiO2 matrix and replace some of the oxygen, forming a doped SiO2:F structure, thus achieving the preparation of a low-refractive-index fluorine cladding. The reaction formula is as follows:

[0119] SiCl4+SiF4+2O2→2SiO2:F+2Cl2+F2

[0120] In one example, during the deposition process, the flow rates of oxygen, silicon tetrafluoride, and silicon tetrachloride can be set to 1850 sccm–2350 sccm (standard cubic centimeters per minute), 30 sccm–130 sccm, and 1050 sccm–1650 sccm, respectively, and the deposition reaction temperature can be set to 900℃–1100℃. During the deposition process, the flow rate of the raw material gases can be controlled by a flow meter to ensure that the raw material gases react according to the designed ratio.

[0121] Specifically, the fluorine-doped coating can be prepared through multiple deposition processes. After deposition is complete, the fluorine-doped coating will form on the inner wall of the quartz deposition tube.

[0122] In practical fabrication scenarios, when preparing optical fiber cladding using plasma vapor deposition (PVD) equipment, the quartz tube typically includes a quartz feed tube, a quartz deposition tube, and a quartz tail tube. The quartz feed tube, deposition tube, and tail tube are connected sequentially, and part of the deposition tube is heated by an external heat source. During the optical fiber cladding preparation process, the raw material gas is injected from one end of the quartz feed tube, passes through the feed tube into the deposition tube, reacts inside the deposition tube, and finally exits from the tail tube.

[0123] In this scenario, before depositing the fluorine-doped coating, the quartz feed tube, quartz deposition tube, and quartz tail tube are all cut to the required lengths. These components are then repeatedly rinsed with anhydrous ethanol and deionized water to ensure the quartz deposition tube is free of dust and contaminants, preventing the introduction of impurities during the deposition process. The quartz feed tube, quartz deposition tube, and quartz tail tube are then fixed to the lathe of the plasma vapor deposition equipment by welding, and the preparation of the fluorine-doped coating begins.

[0124] Step S22: Insert a quartz fiber core tube into the fluorine-doped cladding, and then perform a melt shrinking and compaction treatment to obtain the first preform.

[0125] In one example, melting and shrinking treatment can be performed at a temperature of 2050℃-2150℃.

[0126] Step S23: Grind away the outermost quartz deposition tube of the first preform to obtain the pixel preform.

[0127] Specifically, after the melting and sintering process, the first preform can be cooled to room temperature before the quartz deposition tube is ground off.

[0128] This application does not specifically limit the dimensional parameters of the first preform and the pixel preform. In one example, the outer diameter of the first preform can be designed to be 26.2 mm, the outer diameter of the fluorine-doped cladding can be designed to be 25.6 mm, and the diameter of the quartz fiber core tube can be designed to be 21.2 mm. After obtaining the first preform, the diameter of the first preform can be ground to 25.6 mm by cold working to obtain the pixel preform. The numerical aperture of the obtained pixel preform is 0.22 ± 0.01, and the core-to-wall ratio is 1.2.

[0129] Step S24: Draw the pixel preform to obtain pixel monofilament.

[0130] Specifically, the preforms for the pixels can be drawn on the fiber drawing tower.

[0131] In one example, the heating furnace temperature of the drawing tower can be set to 2050℃, the bar feeding speed can be controlled to 1.54mm / min, the monofilament take-up speed can be set to 20m / min, and the diameter of the pixel monofilament can be set to 225±2μm for drawing the pixel monofilament.

[0132] Step S25: Take multiple pixel monofilaments and arrange them inside a quartz outer tube to obtain a transmission bundle preform.

[0133] Specifically, the pixel monofilaments can be neatly inserted into the quartz outer tube in a cleanroom to complete the fiber bundling of the pixel monofilaments.

[0134] Before arranging the pixel filaments in step S25, the pixel filaments can be cut to the required length, stray fibers from the cutting process can be removed, and the pixel filaments can be repeatedly rinsed with ultrapure water and anhydrous ethanol to remove dust and impurities from their surface. This helps ensure the optical transmission performance of the subsequently fabricated fiber optic image bundle 4. In one example, the pixel filaments can be cut to a length of 150 mm.

[0135] After rinsing the pixel monofilaments, they can be baked in a hot oven to evaporate moisture and ethanol, ensuring no residue remains. In one example, the pixel monofilaments can be baked for 12 hours.

[0136] Similarly, before arranging the pixel monofilaments, the quartz outer tube can be repeatedly rinsed with ultrapure water and anhydrous ethanol to remove floating particles and impurities from the inner wall of the quartz outer tube.

[0137] The shape of the quartz outer tube can be selected according to actual needs. For example, if it is necessary to splice the second ends of each optical fiber image bundle 4 into a hexagonal output end face 43, then a quartz outer tube with a regular hexagonal cross-section can be selected.

[0138] The dimensions of the quartz outer tube can be determined by combining the dimensions of the pixel filaments drawn in step S24 and the number of pixel filaments to be arranged in the quartz outer tube. For example, when the diameter of the pixel filaments is 225±2μm, see [reference needed]. Figure 6 As illustrated, a regular hexagonal quartz outer tube with an inner wall face-to-face dimension d3 of 24mm and a wall thickness d4 of 2mm can be selected. In this case, about 10,000 pixel monofilaments can be arranged inside the quartz outer tube.

[0139] Step S26: Pull the image bundle preform to obtain the optical fiber image bundle.

[0140] Specifically, the preforms for the image bundle can be drawn on the fiber optic drawing tower.

[0141] In one example, the furnace temperature of the drawing tower can be set to 2000°C. Setting the furnace temperature at a lower level helps to increase the viscosity of the image bundle preform in the furnace during the drawing process, thereby helping to maintain the shape of the image bundle preform. For example, using a quartz outer tube with a regular hexagonal cross-section helps to maintain the regular hexagonal shape of the image bundle preform. Furthermore, specifically, the feed speed of the image bundle preform can be set to 1.28 mm / min, and the drawing speed can be set to 1 m / min.

[0142] Figure 7 A schematic diagram of an end face structure of the optical fiber image bundle 4 obtained by drawing based on the above steps S21-S26 is shown. Figure 7 (a) in the diagram shows the end face structure of the entire optical fiber image bundle 4. Figure 7 (b) is an enlarged view of region A in (a), showing that a large number of pixel monofilaments 44 are arranged inside the quartz outer tube 45.

[0143] In some embodiments of this application, during the drawing process of the image bundle preform based on step S26, a polyimide coating can be applied to the image bundle preform online, and the polyimide coating can be cured, so that the fiber image bundle 4 finally drawn will be wrapped with a polyimide coating.

[0144] As mentioned earlier, the polyimide coating helps to improve the flexibility and strength of the fiber optic image bundle 4, enabling it to have a minimum bending radius of 200 mm.

[0145] Specifically, the optical fiber image bundle 4 obtained by online drawing based on the above steps S21-S26 has the characteristics of clear imaging, strong anti-interference, good flexibility, and high yield. The preparation process is simple and can meet the needs of mass production.

[0146] In some embodiments of this application, if polyimide coating is applied during the drawing process of the image bundle preform, the polyimide coating covering the inner section 41 of the optical fiber image bundle 4 and the first sub-segment 42a on the side near the inner section 41 of the extension section 42 needs to be removed before assembling the fixing cover 1, the objective lens assembly 3 and the optical fiber image bundle 4.

[0147] As explained above, the built-in section 41 is the part of the fiber optic image bundle 4 that is to be placed inside the fixed cover 1, while the first sub-segment 42a on the extension section 42 is the part to be wrapped inside the armor sleeve 2. By removing the polyimide coating covering the built-in section 41 and the first sub-segment 42a, it can be ensured that the user can place the fixed cover 1 and the armor sleeve 2 of the observation device in a high-temperature environment during use, thus enabling observation in high-temperature environments.

[0148] In practical applications, the length of the polyimide coating to be removed from one side of the first end can be determined by combining the dimensional parameters of the designed fixing cover 1 and the armor sleeve 2. In one example, 50 mm of the polyimide coating can be removed from the side of the optical fiber image bundle 4 near the first end.

[0149] In addition, if polyimide coating is applied during the drawing process of the image bundle preform, the polyimide coating wrapped around the second sub-segment 42b on the side near the second end of the N-bundle optical fiber image bundle 4 needs to be removed before splicing and fixing the second end of the optical fiber image bundle 4.

[0150] As can be easily understood from the preceding explanation, by stripping the polyimide coating covering the second segment 42b of the optical fiber image bundle 4, it is beneficial to increase the effective light transmission area ratio of the output end face 43, thereby helping to improve the brightness of the image observed by the observation device and improving the image quality.

[0151] In practical applications, the length of the polyimide coating to be removed from one side of the second end can be determined based on actual needs. In one example, 20 mm of the polyimide coating can be removed from the side of the fiber optic image bundle 4 near the second end.

[0152] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0153] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0154] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. An observation device, characterized in that, include A fixed cover, wherein one side of the fixed cover has an opening and the other side has N observation holes, wherein the N observation holes are fitted with quartz glass windows, and N is a natural number greater than or equal to 1; N sets of objective lens assemblies are respectively fixed to the side of the quartz glass window facing the inside of the fixing cover in the N observation holes; N fiber optic image transmission bundles, the first ends of the N fiber optic image transmission bundles are respectively connected to the side of the N objective lens assemblies facing the inside of the fixing cover; the extensions of the N fiber optic image transmission bundles away from the first ends protrude from the opening, and the second ends of the N fiber optic image transmission bundles are spliced ​​together to form an output end face. An armored sheath is attached to the side of the fixed cover with the opening, and wraps around the first sub-segment of the extension of the N fiber optic image bundles near the fixed cover. The eyepiece assembly is connected to the output end face of the N fiber optic image transmission bundles; The display component is disposed on the side of the eyepiece assembly away from the optical fiber image bundle; The fixing cover and the armor sleeve are made of tungsten iron alloy.

2. The observation device according to claim 1, characterized in that, The fixed cover is hemispherical, and the N observation holes are distributed on the hemispherical surface of the hemisphere. The opening is located on the bottom surface of the hemisphere. The projection of the N observation holes on the bottom surface is arranged in a first hexagonal array.

3. The observation device according to claim 2, characterized in that, The output end face has a hexagonal structure, and the second ends of the N fiber image transmission bundles are arranged in a second hexagonal array; wherein, the relative position of an observation hole in the first hexagonal array is consistent with the relative position of the second end of the fiber image transmission bundle connected to the first objective lens assembly in the second hexagonal array, and the first objective lens assembly is an objective lens assembly fixed to the side of the quartz glass window facing the inside of the fixed cover within the observation hole.

4. The observation device according to claim 1, characterized in that, Each of the aforementioned optical fiber image bundles includes multiple pixel monofilaments, each of the aforementioned pixel monofilaments includes a quartz fiber core and a fluorine-doped cladding layer surrounding the quartz fiber core.

5. The observation device according to claim 1, characterized in that, Each of the optical fiber image bundles includes the extension section and the built-in section located within the fixing cover. The extension section includes a first sub-segment, a second sub-segment near the second end, and a third sub-segment located between the first sub-segment and the second sub-segment. The third sub-segment is wrapped with a polyimide coating, while the built-in section, the first sub-segment, and the second sub-segment are not wrapped with a polyimide coating.

6. A method for manufacturing an observation device, characterized in that, include: Prepare a fixing cover, wherein one side of the fixing cover has an opening and the other side has N observation holes, where N is a natural number greater than or equal to 1; Quartz glass windows are embedded in the N observation holes; The fixed cover, N objective lens assemblies, and N fiber optic image transmission bundles are assembled such that the N objective lens assemblies are respectively fixed to the side of the quartz glass window in the N observation holes facing the inside of the fixed cover, the first end of the N fiber optic image transmission bundles is respectively connected to the side of the N objective lens assemblies facing the inside of the fixed cover, and the extension of the N fiber optic image transmission bundles away from the first end protrudes from the opening. The second ends of the N fiber optic image bundles are spliced ​​and fixed to form the output end face; The N fiber optic image bundles are inserted into the armor sheath, and the armor sheath is connected to the side of the fixing cover with the opening; the armor sheath covers the first sub-segment of the extension of the N fiber optic image bundles near the fixing cover. Connect the output end face of the N fiber image transmission bundles to the eyepiece assembly; A display component is disposed on the side of the eyepiece assembly away from the optical fiber image bundle; The fixing cover and the armor sleeve are made of tungsten iron alloy.

7. The method according to claim 6, characterized in that, The optical fiber image bundle is manufactured based on the following process: Using oxygen, silicon tetrafluoride, and silicon tetrachloride as raw materials, a fluorine-doped coating is deposited on the inner wall of a quartz deposition tube through plasma vapor deposition. A quartz fiber core tube is inserted into the fluorine-doped cladding, and then a melting and shrinking compaction process is performed to obtain the first preform. Grind away the outermost quartz deposition tube of the first preform to obtain the pixel preform; The pixel preform is drawn to obtain a pixel monofilament; Multiple pixel monofilaments are arranged inside a quartz outer tube to obtain an image transmission bundle preform. The image transmission bundle preform is drawn to obtain the optical fiber image transmission bundle.

8. The method according to claim 7, characterized in that, The method further includes: During the drawing process of the image bundle preform, a polyimide coating is applied to its surface, and after curing, a polyimide coating is formed.

9. The method according to claim 8, characterized in that, Before assembling the fixed cover, the N objective lens assemblies, and the N fiber optic image transmission bundles, the method further includes: Remove the polyimide coating from the inner section of the optical fiber image bundle and the first sub-segment on the side near the inner section of the extension section; the inner section is used to be disposed inside the fixing cover; Before splicing and fixing the second ends of the N fiber optic image bundles, the method further includes: Remove the polyimide coating that wraps around the second segment of the optical fiber image bundle near the second end.

10. The method according to claim 7, characterized in that, During the deposition of the fluorine-doped coating, the flow rates of oxygen, silicon tetrafluoride, and silicon tetrachloride are 1850 sccm–2350 sccm, 30 sccm–130 sccm, and 1050 sccm–1650 sccm, respectively, and the deposition reaction temperature is 900℃–1100℃.

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