Copper-silver-zinc alloy, copper-silver-zinc alloy optical fiber, optical taper and preparation method and application thereof

Abstract

The application discloses a copper-silver-zinc alloy, a copper-silver-zinc alloy optical fiber, an optical cone and a preparation method and application thereof, wherein the content of copper, silver and zinc in the copper-silver-zinc alloy is greater than or equal to 99.99 wt%, the content of copper is 15 wt% to 50 wt%, the content of silver is 10 wt% to 80 wt%, and the content of zinc is 5 wt% to 40 wt%. The technical problem to be solved is that the optical fiber monofilament plated with the copper-silver-zinc alloy layer is used for the preparation of the optical cone, so that the light interference prevention and the anti-electromagnetic interference capability of the prepared optical panel are significantly improved, thereby realizing the high-resolution image transmission of the anti-interference and high-frequency electromagnetic pulse light cone.

Description

Technical Field

[0001] This invention belongs to the field of ICCD / ICOMS coupled imaging element fabrication technology, specifically relating to a copper-silver-zinc alloy, a copper-silver-zinc alloy optical fiber, an optical cone, and their fabrication methods and applications. Background Technology

[0002] Optical cones are tapered fiber array imaging materials made by fusing tens of millions of micrometer-sized tapered optical fibers at high temperatures. They feature high light transmission efficiency, low inter-stage coupling loss, clear and realistic imaging, and zero thickness. However, when optical cones operate in strong electromagnetic field environments, they often face problems of decreased accuracy and instability, which significantly affect the accuracy and stability of image transmission, introduce errors in measurement data, and may even cause direct damage to components from high-frequency pulses.

[0003] In current optical fiber taper technology, during optical signal transmission, crosstalk occurs between adjacent fibers due to the close arrangement of the fibers. This crosstalk causes signal leakage to other channels, negatively impacting communication quality. Especially in long-distance transmission scenarios, inter-fiber crosstalk becomes a key factor limiting transmission efficiency. Therefore, effectively reducing inter-fiber crosstalk and improving the quality and efficiency of optical fiber communication systems has become a pressing technical challenge in the field of optical fiber taper technology. Summary of the Invention

[0004] In view of this, the main objective of the present invention is to provide a copper-silver-zinc alloy, a copper-silver-zinc alloy optical fiber, an optical cone, and the preparation method and application thereof. The technical problem to be solved is that by using the optical fiber monofilament coated with a copper-silver-zinc alloy layer for the preparation of the optical cone, the anti-crosstalk and anti-electromagnetic interference capabilities of the prepared optical panel are significantly improved, thereby realizing high-resolution image transmission of the anti-crosstalk and anti-high-frequency electromagnetic pulse optical cone.

[0005] The objective of this invention and the technical problem it solves are achieved by the following technical solution. This invention proposes a copper-silver-zinc alloy, wherein, by weight percentage, the sum of the contents of copper, silver, and zinc in the copper-silver-zinc alloy is ≥99.99 wt%, and the content of copper is 15 wt%~50 wt%, the content of silver is 10 wt%~80 wt%, and the content of zinc is 5 wt%~40 wt%.

[0006] The objectives of this invention and the technical problems solved can be further achieved by the following technical measures.

[0007] Preferably, in the aforementioned copper-silver-zinc alloy, the oxygen content is <5ppm, the sum of the contents of iron, nickel, sulfur and phosphorus is ≤8ppm, and the sum of the contents of other impurities is ≤6ppm.

[0008] The objective of this invention and the technical problem it solves are achieved through the following technical solution. This invention proposes a method for preparing a copper-silver-zinc alloy, comprising the following steps:

[0009] The alloy composition and corresponding proportions are determined according to the following: the sum of the contents of copper, silver and zinc in the copper-silver-zinc alloy is ≥99.99wt%, and the contents of copper are 15wt%~50wt%, silver is 10wt%~80wt%, and zinc is 5wt%~40wt%. The appropriate elemental metal material is selected as the raw material, and the metal raw material is pretreated. The pretreated metal raw material is heated to 775~800℃ while stirring until the metal is completely melted and mixed evenly to obtain the copper-silver-zinc alloy.

[0010] The objective of this invention and the technical problem it solves can also be achieved by the following technical measures. The present invention proposes a method for preparing copper-silver-zinc alloy plated optical fiber, comprising the following steps:

[0011] S1 draws the optical fiber preform into bare optical fiber filaments;

[0012] S2 Coating a copper-silver-zinc alloy onto the surface of a bare optical fiber to form an optical fiber monofilament with a copper-silver-zinc alloy coating, and collecting the optical fiber monofilament to obtain the copper-silver-zinc alloy coated optical fiber.

[0013] The objectives of this invention and the technical problems it solves can also be achieved by the following technical measures. This invention proposes a copper-silver-zinc alloy coated optical fiber, wherein the copper-silver-zinc alloy coated optical fiber comprises, from the inside out, an optical fiber core layer, an optical fiber sheath layer, and a copper-silver-zinc alloy coating; by weight percentage, the sum of the contents of copper, silver, and zinc in the copper-silver-zinc alloy coating is ≥99.99 wt%, and the content of copper is 15 wt%~50 wt%, the content of silver is 10 wt%~80 wt%, and the content of zinc is 5 wt%~40 wt%.

[0014] The objectives of this invention and the technical problems it solves can also be achieved using the following technical measures. This invention proposes a high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant optical cone, comprising an output end, an input end, and an optical fiber section disposed between the output end and the input end; the optical fiber section comprises a plurality of copper-silver-zinc alloy optical fibers, arranged from the inside out as an optical fiber core, an optical fiber sheath, and a copper-silver-zinc alloy coating, with light-absorbing wires and gap-filling wires inserted between the different optical fibers; by weight percentage, the sum of the contents of copper, silver, and zinc in the copper-silver-zinc alloy coating is ≥99.99 wt%, and the copper content is 15 wt%~50 wt%, the silver content is 10 wt%~80 wt%, and the zinc content is 5 wt%~40 wt%.

[0015] The objective of this invention and the technical problem it solves can also be achieved by the following technical measures. This invention proposes a method for preparing a high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant optical cone, comprising the following steps:

[0016] a. The tubing is fitted onto the core rod to form an optical fiber preform;

[0017] b. Melt the optical fiber preform obtained in step a into an optical fiber monofilament and perform metal coating treatment to deposit a metal coating on the outer surface to produce a metal-coated optical fiber monofilament.

[0018] c. Draw the black absorbing rod into a light-absorbing filament. Arrange the metal-coated fiber monofilaments obtained in step b into a hexagonal close packing. Fill the gaps between the metal-coated fiber monofilaments with the light-absorbing filament to obtain a primary composite rod. Draw the primary composite rod into a primary fiber filament.

[0019] d. Multiple primary fiber filaments are arranged in a hexagonal close-packed arrangement, and light-absorbing filaments are inserted into the gaps formed by the hexagonal close-packed arrangement of the multiple primary fiber filaments according to a certain pattern to obtain a primary composite rod; the primary composite rod is drawn into a primary multifilament; the primary multifilament is then cut at a constant rate, arranged in a hexagonal close-packed arrangement, and bundled to obtain a secondary composite rod; the secondary composite rod is drawn into a secondary multifilament; the secondary multifilament is then cut at a constant rate, arranged in a hexagonal close-packed arrangement, and bundled to obtain a secondary multifilament rod;

[0020] e. The secondary composite rod obtained in step d is drawn at 660~680℃ to obtain a molten fiber bundle; after being cut to a fixed length, a cylindrical blank is obtained by mechanical cold working; the blank is stretched at a temperature of 780~800℃ and a tensile force of 300~400N, and after stretching, it is cut from the center to obtain two symmetrical light cone blanks; then these light cone blanks are subjected to optical finishing and optical polishing to obtain the light cone with high transmittance, anti-crosstalk and anti-high frequency pulse.

[0021] The objectives of this invention and the technical problems solved can be further achieved by the following technical measures.

[0022] Preferably, in the aforementioned method for preparing a high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant light cone, in step a, the refractive index of the tubing at a wavelength of 532 nm is 1.50~1.51, and the refractive index of the core rod at a wavelength of 532 nm is 1.80~1.81.

[0023] Preferably, in step c, the primary composite rod comprises a metal-plated fiber monofilament and a light-absorbing filament; the black absorbing rod is made of glass with an absorption coefficient of 0.95 or higher in the 500-600nm wavelength range.

[0024] The objectives of this invention and the technical problems it solves can also be achieved using the following technical measures. This invention proposes an image-enhanced CCD camera, which includes the aforementioned high transmittance, crosstalk prevention, and high-frequency pulse resistance light cone.

[0025] The objectives of this invention and the technical problems it solves can also be achieved using the following technical measures. This invention proposes an image-enhanced CMOS camera, which includes the aforementioned high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant light cone.

[0026] Compared with existing technologies, the copper-silver-zinc alloy, copper-silver-zinc alloy optical fiber, optical cone, and their preparation methods and applications described in this invention have the following beneficial effects:

[0027] This invention provides a method for preparing a high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant optical cone. The method involves applying a metal coating to the outer surface of an optical fiber filament to prepare a high-transmittance optical cone that effectively suppresses optical crosstalk and resists high-frequency electromagnetic pulses. First, the optical fiber raw material is processed into optical fiber filaments. Then, a metal coating of a certain thickness is formed on the outer surface of the optical fiber filament through a molten metal coating process. This reduces the generation of stray light during signal transmission in a single optical fiber bundle and weakens the optical crosstalk from neighboring optical fibers, achieving high transmittance, high precision, and high-resolution transmission of image signals. This method improves the optical cone's absorption capacity and anti-interference ability against high-frequency electromagnetic pulses, maintains the normal operation of the optical cone in a strong magnetic field environment, and enhances the stability of image transmission, thereby ensuring the accuracy and resolution of the optical cone's signal transmission.

[0028] The high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant optical cone provided by this invention improves transmission efficiency: by reducing stray light and optical crosstalk, it ensures high transmittance, high precision, and high-resolution transmission of image signals; enhances anti-interference capability: the copper-silver-zinc alloy coating significantly enhances the absorption and resistance of the fiber array to high-frequency pulses, ensuring stable operation in strong magnetic field environments; and improves overall performance: applying this coated fiber monofilament to the tapered fiber array significantly improves the fiber array's anti-optical crosstalk and anti-electromagnetic interference capabilities, achieving high-resolution image transmission.

[0029] The high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant light cone provided by this invention has a copper-silver-zinc alloy coating with a refractive index of 1.2~1.5 at a wavelength of 532nm, a reflectivity of 78~85% at a wavelength of 532nm, a conductivity ≥95%IACS, and a coating elongation ≥27%. Under a test environment with an electromagnetic radiation intensity of 10V / m and a radiation frequency test fluctuation range of 80MHz~1GHz, the shielding effectiveness can reach 84dB~95dB, thus ensuring that the manufactured light cone has high anti-interference performance.

[0030] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the copper-silver-zinc alloy optical fiber fabrication system of the present invention;

[0032] Figure 2 This is a schematic cross-sectional view of the primary multifilament of the optical cone with high transmittance, crosstalk prevention, and high-frequency pulse resistance of the present invention.

[0033] Figure 3 This is a process flow diagram for the fabrication of the high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant light cone of the present invention.

[0034] Figure 4 This is a schematic diagram illustrating the electromagnetic interference suppression principle of the copper-silver-zinc alloy coating of the present invention.

[0035] Figure 5 This is a schematic diagram of the coupling between the high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant light cone and the CCD / CMOS of the present invention.

[0036] Among them, 1-preform; 2-fiber optic forming device; 3-annealing tube; 4-diameter measuring tube; 5-metal coating device; 6-fiber optic collecting device; 7-gap filler filament; 8-copper-silver-zinc alloy coating; 9-light absorption filament; 10-fiber core layer; 11-fiber optic sheath; 12-internal absorption wave; 13-incident wave; 14-fiber monofilament; 15-reflected wave; 16-transmitted wave; 17-internal multiple reflection wave; 18-copper-silver-zinc alloy coating; 19-light cone; 20-photosensitive surface; 21-CCD / CMOS. Detailed Implementation

[0037] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following detailed description, in conjunction with preferred embodiments, provides a detailed explanation of the specific implementation methods, structures, features, and effects of the copper-silver-zinc alloy, copper-silver-zinc alloy optical fiber, optical cone, and their preparation methods and applications based on the present invention. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable manner.

[0038] Unless otherwise specified, all materials and reagents mentioned below are commercially available products well-known to those skilled in the art; unless otherwise specified, all methods described are methods known in the art. Unless otherwise defined, the technical or scientific terms used should have the ordinary meaning understood by those skilled in the art. Where specific experimental steps or conditions are not specified below, they can be performed according to the conventional experimental steps or conditions described in the literature in this field.

[0039] The fabrication process of ordinary optical fiber involves placing an optical fiber preform in a high-temperature furnace, heating it to a suitable softening and drawing temperature, and then precisely drawing it into the initial fiber filament. However, an inherent characteristic of this type of fiber—the core layer's refractive index is significantly higher than the skin layer—causes some light rays to fail to achieve total internal reflection within the core layer during optical signal transmission. Instead, these rays penetrate the core layer and enter the skin layer, leading to optical crosstalk and significantly reducing image resolution and sharpness. Simultaneously, when operating in a strong electromagnetic field environment, electromagnetic radiation has a certain impact on the accuracy and stability of image transmission, causing errors in measurement data. High-frequency electromagnetic pulses can even directly damage optical components such as cameras and fiber optic panels. Therefore, appropriate adjustments and designs to the fiber structure are necessary, such as... Figure 1 As shown, a unique copper-silver-zinc alloy-coated optical fiber technology has been introduced. This technology successfully fabricates copper-silver-zinc alloy-coated optical fibers by depositing a fine copper-silver-zinc alloy layer onto the surface of the initially drawn optical fiber filament. This copper-silver-zinc alloy coating not only significantly reduces the optical fiber's light transmittance, effectively suppressing optical crosstalk, but also exhibits excellent isolation, dissipation, reflection, and absorption capabilities for high-frequency pulse energy, attenuating it to a level that electronic information equipment can safely withstand. This design greatly enhances the optical cone's absorption and anti-interference capabilities against high-intensity, high-frequency pulses, such as... Figure 4 As shown, when the incident electromagnetic pulse wave 13 reaches the copper-silver-zinc alloy coating 18, most of it is reflected by the coating, forming a reflected wave 15; another portion enters the coating and is absorbed, forming an internal absorption wave 12; of the unabsorbed electromagnetic pulse signal, a portion enters the fiber optic monofilament 14, forming a transmitted wave 16, while the other portion forms an internally reflected wave 17 within the coating, undergoing multiple reflections and propagating along the direction of the coating. This invention solves the problems of optical crosstalk and electromagnetic interference at the structural unit level. Optical devices made with copper-silver-zinc alloy-coated fiber monofilaments can achieve high transmittance, high resolution, and high-definition image transmission, and are resistant to high-frequency electromagnetic pulse interference, opening up new avenues for the stable application and performance improvement of optical technology.

[0040] In fact, currently mass-produced ordinary optical cones rely solely on light-absorbing glass to absorb stray light and improve image resolution. However, during actual signal transmission, some stray light remains unabsorbed, necessitating further adjustments to the optical structure. Since coating the outer surface of an optical fiber monofilament with a copper-silver-zinc alloy layer significantly restricts light signal transmission from the fiber's interior, applying this alloy coating during monofilament fabrication greatly limits signal leakage, improving transmission efficiency. It also enhances the optical cone's absorption capacity against high-frequency electromagnetic pulses and its anti-interference capabilities.

[0041] Meanwhile, the optical cone uses a larger amount of metal than the fiber optic panel. Using an alloy with a designed silver content of 92wt%~95wt% would significantly increase the material cost of the optical cone, which is detrimental to product cost control in actual production. Therefore, the coating metal of the optical cone needs to be redesigned. This design needs to take into account the characteristics of high transmittance, anti-crosstalk, and resistance to high-frequency pulses, as well as selecting an appropriate alloy ratio to reasonably control the cost of the coating alloy, which is conducive to the promotion and use of this invention. Since copper has a high melting point, as the silver content decreases, the copper content increases, which will increase the melting point of the alloy. If the melting point temperature is too high, the fiber filament will deform during the coating process. Therefore, zinc, a metal with a lower melting point, is added to lower the melting point of the alloy. The alloy composition and corresponding proportions are determined by ensuring that the sum of the contents of copper, silver, and zinc in the copper-silver-zinc alloy is ≥99.99wt%, with the copper content ranging from 15wt% to 50wt%, the silver content from 10wt% to 80wt%, and the zinc content from 5wt% to 40wt%. This ensures that the melting point of the copper-silver-zinc alloy is between 665 and 775℃, and that the coating temperature does not cause deformation of the optical fiber. During the drawing and pressing process, the alloy is in a softened state and completely adheres to the optical fiber monofilament.

[0042] Therefore, some embodiments of the present invention provide a copper-silver-zinc alloy coating, wherein, by weight percentage, the sum of the contents of copper, silver, and zinc in the copper-silver-zinc alloy is ≥99.99 wt%. If the alloy purity is too low, it will cause uncertain fluctuations in the melting point and softening temperature range of the alloy. Furthermore, the copper content is 15 wt%~50 wt%, the silver content is 10 wt%~80 wt%, and the zinc content is 5 wt%~40 wt%. If the copper content is less than 15 wt%, or the silver content is less than 10 wt%, or the zinc content is greater than 40 wt%, the melting point of the alloy will be too low, which will cause significant damage to the coating during subsequent drawing and pressing processes, thus hindering the stability of the coated optical fiber performance. If the copper content is greater than 50 wt%, the silver content is greater than 80 wt%, and the zinc content is less than 5 wt%, the melting point of the alloy will be higher than 775°C. In this case, the temperature in the heating furnace will be insufficient to completely melt the alloy, or increasing the melting temperature will cause the molten alloy at high temperature to soften the optical fiber filament during coating, which is detrimental to the preparation of coated optical fibers. The oxygen content should be <5 ppm, the sum of iron, nickel, sulfur, and phosphorus content ≤8 ppm, and the sum of other impurities ≤6 ppm. Impurity content must be controlled within a low range; excessively high content is detrimental to the stability of the alloy properties. Preferred copper-silver-zinc alloy compositions are shown in Table 1.

[0043] Table 1

[0044]

[0045] The copper-silver-zinc alloy coating has a melting point of 665-775℃, a softening temperature of around 650℃, a conductivity ≥95% IACS, an elongation ≥27%, a refractive index of 1.2-1.5, and a reflectivity of approximately 78-85%. The high conductivity ensures good electromagnetic interference resistance, and the excellent elongation effectively guarantees uniform adhesion to the fiber monofilament during subsequent primary and secondary fiber fabrication, thus improving the uniformity of the copper-silver-zinc alloy coating.

[0046] Some embodiments of the present invention also provide a method for preparing the above-mentioned copper-silver-zinc alloy, comprising the following steps:

[0047] 101. Determine the alloy composition and corresponding proportions according to the above alloy ratio range; select appropriate elemental metal materials as raw materials, and accurately weigh the selected elemental metals to ensure that the proportions of each metal are accurate.

[0048] 102. The metal raw materials undergo necessary pretreatment to avoid excessively large particles and to remove oil, impurities, and moisture. The pretreatment includes degreasing, drying, and cutting. The degreasing, drying, and cutting processes are all selected from existing technologies, and their specific steps will not be described in detail here.

[0049] 103. Place the pretreated metal raw material into a heating furnace, turn on the furnace, and heat the metal raw material to 775~800℃ until the metal is completely melted. Temperatures below 775℃ will result in insufficient melting of the metal raw material, while temperatures above 800℃ will soften the optical fiber monofilament, affecting the subsequent formation of the metal coating on the optical fiber monofilament. During the heating process, stir the molten metal raw material at a speed of 150~300 r / min as needed to ensure uniform mixing until the metal is completely dissolved and evenly distributed.

[0050] Some embodiments of the present invention also provide a method for preparing a light cone with high transmittance, crosstalk prevention, and electromagnetic pulse resistance, wherein the light cone is made from tens of millions or even hundreds of millions of micron-sized metal-coated fibers through a specific process. Each fiber consists of a core, a cladding, and an external metal coating, and each fiber independently transmits a pixel from the input end to the output end. Figure 3 As shown, it includes the following steps:

[0051] 201. Prepare the tubing and core rod into an optical fiber preform and draw the optical fiber monofilament.

[0052] The preparation of the optical fiber monofilament in this step includes: selecting core rods and tubing of suitable size, fitting the primary tubing onto the primary core rod, and having the refractive index of the fiber sheath at a wavelength of 532nm be 1.50~1.51; the refractive index of the fiber core at a wavelength of 532nm be 1.80~1.81.

[0053] 202. Draw the optical fiber preform into bare optical fiber filaments.

[0054] The process involves heating the optical fiber preform to 810-820℃ in a graphite furnace to fully soften it. Once the preform is softened, it is drawn into single optical fiber filaments. To ensure high uniformity of the drawn filaments, a drawing speed of approximately 10-14 m / min is optimal, resulting in more uniform filament diameters. Drawing speeds that are too fast or too slow will negatively impact the uniformity of the filaments, and poor uniformity directly leads to a decrease in the transmittance of the optical cone.

[0055] 203. Then, a copper-silver-zinc alloy is coated onto the surface of the bare optical fiber to form an optical fiber monofilament with a copper-silver-zinc alloy coating. The coated optical fiber monofilament is collected using a fiber collection device to obtain the copper-silver-zinc alloy coated optical fiber. The copper-silver-zinc alloy coated optical fiber consists of an optical fiber core layer 10, an optical fiber sheath 11, and a copper-silver-zinc alloy coating 8 from the inside out. The optical fiber sheath 11 has a refractive index of 1.50~1.51 at a wavelength of 532nm; the optical fiber core layer 10 has a refractive index of 1.80~1.81 at a wavelength of 532nm; the copper-silver-zinc alloy coating 8 has a thickness ≥18μm, a refractive index of 1.2~1.5 at a wavelength of 532nm, a reflectivity of approximately 78~85% at a wavelength of 532nm, and a transmittance of 40%~41% at a wavelength of 532nm.

[0056] Among them, such as Figure 1 As shown, the copper-silver-zinc alloy optical fiber preparation system of the present invention includes, from top to bottom, an optical fiber forming device 2, an annealing tube 3, a diameter measuring tube 4, a metal coating device 5, and an optical fiber collecting device 6. The preform 1 is fed from directly above the optical fiber forming device 2 and drawn into an optical fiber monofilament of 2.00-2.05 mm at 800-820°C. Then, it is cooled to room temperature by the annealing tube 3 directly below the optical fiber forming device 2, and then its diameter is measured and verified by the optical fiber diameter measuring tube 4 directly below the annealing tube 3. The cooled and shaped optical fiber monofilament is then introduced into the metal coating device 5 for metal coating. After coating, the coated optical fiber monofilament is collected by the optical fiber collecting device 6 below the metal coating device 5. The metal coating process is as follows: First, the copper-silver-zinc alloy particles in the metal coating device are heated above their melting point. Then, the prepared bare optical fiber is introduced into the metal coating device to begin coating. The coating temperature is 775~800℃ to form a uniform metal coating on the outside of the optical fiber filament. The metal coating thickness is ≥18μm. The 18μm thick metal coating not only ensures that the manufactured optical cone has high anti-interference performance but also effectively controls the manufacturing cost of the optical cone. The coated optical fiber filament is collected by a fiber collection device. The copper-silver-zinc alloy coating on the outside of the optical fiber filament has a refractive index of 1.2~1.5 at a wavelength of 532nm and a reflectivity of approximately 78~85% at a wavelength of 532nm, which can effectively reduce crosstalk between optical fiber filaments. Under a test environment with an electromagnetic radiation intensity of 10V / m and a radiation frequency fluctuation range of 80MHz~1GHz, the shielding effectiveness is 80dB~95dB.

[0057] 204. The black absorbing rod is drawn into a light-absorbing filament, and the metal-coated optical fiber monofilaments are arranged in a hexagonal close packing. The light-absorbing filament is uniformly filled in the gaps between the metal-coated optical fiber monofilaments to obtain a primary composite rod. The primary composite rod is then drawn into a primary fiber filament (hereinafter referred to as primary filament).

[0058] The primary composite rod in this step includes metal-coated fiber monofilaments and light-absorbing filaments. The black absorbing rod uses N3 light-absorbing glass with excellent light absorption properties, achieving an absorption coefficient of over 0.95 in the 500-600nm wavelength range.

[0059] 205. Multiple primary fibers are hexagonally close-packed, and light-absorbing fibers are inserted into the gaps formed by the hexagonal close-packing of the primary fibers according to a certain pattern. To ensure the transmittance of the light cone, analogous to coordination relationship calculations, it is designed that each pair of fiber cores shares one light-absorbing fiber, thus obtaining a primary composite rod with a side dimension of 27~30mm. A high-precision fiber forming machine is used to heat and draw the pre-drawn part, with a wire diameter drawing accuracy ≤1μm. The primary composite rod is drawn at 760~780℃ to form a primary multifilament with a side dimension of 1.2~1.5mm; after constant cutting, the primary multifilament is hexagonally close-packed and bundled to obtain a secondary composite rod with a side dimension of 27~30mm; the secondary composite rod is drawn at 760~780℃ to form a secondary multifilament with a side dimension of 1.2~1.5mm.

[0060] Both the primary and secondary composite rods have a regular hexagonal structure. In the steps of bundling multiple monofilaments in a hexagonal close-packed arrangement to obtain the primary composite rod, and in the step of bundling multiple primary composite filaments in a hexagonal close-packed arrangement to obtain the secondary composite rod, multiple monofilaments or primary filaments need to be regularly cut and arranged in a regular hexagonal mold. After arrangement, they are bundled to obtain the primary or secondary composite rod. The drawing temperature is 760~780℃. This temperature range ensures that the fiber monofilaments, primary composite wires, and secondary composite wires have good ductility, facilitating drawing and pressing; it also effectively takes into account the good ductility of the metal coating without damaging the layer structure of the metal coating. The resulting primary composite wires, secondary composite wires, and fiber monofilament coatings in the blank also have high uniformity, which can better isolate optical crosstalk signals and absorb strong electromagnetic interference, improving the imaging capability and anti-interference capability of the optical cone.

[0061] 206. Arrange the secondary multifilament sheets into a board, the size of which depends on the actual production requirements. After arrangement, place the board into a high-precision fiber forming machine, and draw it at 660~680℃ to obtain molten fiber bundles according to the pixel size and overall size requirements of the light cone. According to the length requirements of the light cone, cut it to a fixed length, and then obtain a cylindrical light cone blank through mechanical cold working.

[0062] The melting and pressing temperature of the secondary multifilament is adjusted to 660~680℃. This low-temperature melting and pressing within this range significantly reduces interlayer structural damage to the metal coating caused by high temperatures. Simultaneously, it maintains high uniformity in the coating of the primary multifilament, secondary multifilament, and the fiber monofilament in the blank. This structural uniformity helps to more effectively isolate optical crosstalk signals, absorb strong electromagnetic interference, and enhance the imaging transmission performance and anti-interference capability of the optical cone. Excessively high temperatures will increase the degree of coating damage, while excessively low temperatures will prevent the panel from being properly fixed.

[0063] 207. Place the cylindrical blank into a high-temperature stretching furnace. Set the stretching temperature to the range of 690~720℃ and apply a stretching force of 300~400N. Adjust the force appropriately according to the outer diameter and magnification index of the light cone. After stretching, cut it from the center to obtain two symmetrical light cone blanks.

[0064] 208. The shape of the light cone is optically precision machined using a precision engraving machine. After determining the central optical axis, the input and output end faces of the blank are machined.

[0065] In this process, the input and output end faces are optically polished using a machining center, and the surface roughness of the polished optical surface is controlled within 30nm to obtain the optical cone.

[0066] Some embodiments of the present invention also provide a high-transmittance, crosstalk-resistant, and electromagnetic pulse-resistant optical cone, which includes an output end, an input end, and an optical fiber section disposed between the output end and the input end; the optical fiber section includes a plurality of copper-silver-zinc alloy-plated optical fibers, wherein the copper-silver-zinc alloy-plated optical fibers, from the inside out, consist of an optical fiber core layer 10, an optical fiber sheath 11, and a copper-silver-zinc alloy plating layer 8; light-absorbing wires 9 and gap-filling wires 7 are inserted between the different copper-silver-zinc alloy-plated optical fibers. The light-absorbing wires 9 can absorb stray light, while the gap-filling wires 7 can reduce the porosity, such as... Figure 2 As shown.

[0067] The optical properties of the obtained light cone, such as transmittance and electromagnetic pulse resistance, were tested.

[0068] In the above technical solution, the optical cone prepared by the present invention using copper-silver-zinc alloy-plated optical fiber is made by directly plating the optical fiber filament with a copper-silver-zinc alloy coating, then arranging the single filaments, inserting light-absorbing filaments and white gap filaments, and then drawing, melting and pressing, and processing to make the optical cone; the interference phenomenon of other optical fiber filaments during the image transmission process of its constituent unit - the single optical fiber filament - will be significantly improved.

[0069] Some embodiments of the present invention also provide an image-enhanced CCD / CMOS camera, the image-enhanced CCD / CMOS camera including the aforementioned high transmittance, crosstalk prevention, and electromagnetic pulse resistance light cone, such as... Figure 5As shown, the photosensitive surface 20 of the light cone 19 is coupled onto the CCD / CMOS 21 to obtain the image-enhanced CCD / CMOS camera.

[0070] The present invention will be further described below with reference to specific embodiments, but this should not be construed as a limitation on the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the above description of the present invention still fall within the scope of protection of the present invention.

[0071] Example 1

[0072] This embodiment provides a copper-silver-zinc alloy, wherein the copper, silver, and zinc content in the copper-silver-zinc alloy is 99.995 wt%, the copper content is 15 wt%, the silver content is 65 wt%, the zinc content is 20 wt%, the oxygen content is 4.5 ppm, the sum of the iron, nickel, sulfur, and phosphorus content is 6 ppm, and the sum of the contents of other impurities is 3 ppm.

[0073] The copper-silver-zinc alloy coating has a melting point of approximately 720°C, a softening temperature of approximately 650°C, a conductivity of 97.8% IACS, an elongation of 28.1%, a refractive index of 1.28 at a wavelength of 532 nm, and a reflectivity of approximately 82% at a wavelength of 532 nm.

[0074] The preparation method of the above-mentioned copper-silver-zinc alloy includes the following steps:

[0075] 101. Determine the alloy composition and corresponding proportions according to the above alloy ratio range; select appropriate elemental metal materials as raw materials, and accurately weigh the selected elemental metals to ensure that the proportions of each metal are accurate.

[0076] 102. The metal raw materials undergo necessary pretreatment to avoid excessively large particles and to remove oil, impurities, and moisture. The pretreatment includes degreasing (ultrasonic cleaning with 75% (v / v) alcohol for 20 min), drying (60℃, 30 min), and cutting (conventional). The degreasing, drying, and cutting are all selected from existing technologies, and their specific steps will not be described in detail here.

[0077] 103. Place the pretreated metal raw material into a heating furnace and heat it to 800°C until the metal is completely melted. During the heating process, stir the molten metal as needed to ensure uniform mixing until the metal is completely dissolved and evenly distributed.

[0078] The specific steps for preparing a light cone using the aforementioned copper-silver-zinc alloy include:

[0079] 201. A primary glass tube with a refractive index of 1.50, an outer diameter of 31.17 mm, and an inner diameter of 28 mm with a wavelength of 532 nm is selected; and a core glass rod with a refractive index of 1.80 and an outer diameter of 27.8 mm with a wavelength of 532 nm is selected. The primary glass tube is fitted onto the primary glass rod to form an optical fiber preform. The optical fiber preform is then melted into an optical fiber monofilament and subjected to metal coating treatment. A metal coating is deposited on the outer surface to produce a metal-coated optical fiber monofilament.

[0080] 202. Draw the optical fiber preform into bare optical fiber filaments.

[0081] The process involves heating the optical fiber preform to 820℃ in a graphite furnace to fully soften it. Once the preform has reached the softened state, it is drawn into a single optical fiber filament with a diameter of 3.2mm and a length of 1000mm. The drawing speed is controlled at approximately 12m / min.

[0082] 203. Then, a copper-silver-zinc alloy is coated onto the surface of the bare optical fiber to form an optical fiber monofilament with a copper-silver-zinc alloy coating. The coating thickness is 18 μm. The coated optical fiber monofilament is collected by a fiber collection device to obtain the copper-silver-zinc alloy coated optical fiber. The copper-silver-zinc alloy coated optical fiber consists of an optical fiber core layer 10, an optical fiber sheath layer 11, and a copper-silver-zinc alloy coating layer 8 from the inside out.

[0083] Among them, Figure 1 The copper-silver-zinc alloy particles in the metal coating apparatus shown are heated to their melting point of 790°C. Then, the prepared bare optical fiber is introduced into the metal coating apparatus to begin coating the bare optical fiber at 790°C. The thickness of the copper-silver-zinc alloy coating is 18 μm. The coated optical fiber filament is collected by a fiber collection device to obtain a copper-silver-zinc alloy-coated optical fiber monofilament. The copper-silver-zinc alloy layer on the outside of the optical fiber monofilament has a refractive index of 1.28 at a wavelength of 532 nm, a reflectivity of approximately 82% at 532 nm, a transmittance of 40.65% at 532 nm, and a coating elongation of 28.1%. Under a test environment with an electromagnetic radiation intensity of 10 V / m and a radiation frequency fluctuation range of 80 MHz to 1 GHz, the shielding effectiveness reaches 86.13 dB.

[0084] 204. The black absorbing rod is drawn into a light-absorbing filament, and the metal-coated optical fiber monofilaments are arranged in a hexagonal close packing. The light-absorbing filament is uniformly filled in the gaps between the metal-coated optical fiber monofilaments to obtain a primary composite rod. The primary composite rod is then drawn into a primary fiber filament (hereinafter referred to as primary filament).

[0085] The primary composite rod in this step includes metal-coated fiber monofilaments and light-absorbing filaments. The black absorbing rod uses N3 light-absorbing glass with excellent light absorption properties, achieving an absorption coefficient of over 0.95 in the 500-600nm wavelength range.

[0086] 205. Multiple primary fibers are hexagonally close-packed, and light-absorbing fibers are inserted into the gaps formed by the hexagonal close-packing of the primary fibers according to a certain pattern, that is, every two fiber cores share one light-absorbing fiber, thus obtaining a primary composite rod with an opposite side dimension of 27mm. A high-precision fiber forming machine is used to heat and draw the pre-drawn part. This primary composite rod is drawn at 780℃ to form a primary multifilament with an opposite side dimension of 1.2mm and a length of 1000mm; then, after constant cutting, the primary multifilament is hexagonally close-packed and bundled to obtain a secondary composite rod with an opposite side dimension of 27mm; this secondary composite rod is drawn at 780℃ to form a secondary multifilament with an opposite side dimension of 1.2mm and a length of 1000mm.

[0087] Both the primary and secondary composite rods have a regular hexagonal structure. In the steps of bundling multiple monofilaments in a hexagonal close-packed arrangement to obtain a primary composite rod, and in the steps of bundling multiple primary composite filaments in a hexagonal close-packed arrangement to obtain a secondary composite rod, multiple monofilaments or primary filaments need to be regularly cut and arranged in a regular hexagonal mold. After arrangement, they are bundled to obtain the primary or secondary composite rod.

[0088] 206. Arrange the secondary multifilaments into a sheet, the size of which should be based on the actual production requirements. After the sheet is arranged, place it in a high-precision fiber forming machine and draw it at 660℃ to obtain molten fiber bundles. Then roll it into a Φ60mm cylindrical blank, and then cut it to obtain a Φ60mm, 15cm long cylindrical conical blank.

[0089] 207. Place the cylindrical blank into a high-temperature stretching furnace. Set the stretching temperature to 720℃ and the applied stretching force to 400N. The outer diameter of the light cone is 50mm and the magnification ratio is 5:1. After stretching, cut it from the center to obtain two symmetrical light cone blanks.

[0090] 208. The shape of the light cone is optically precision machined using a precision engraving machine. After determining the central optical axis, the input and output end faces of the blank are machined.

[0091] The input and output end faces are optically polished using a machining center to obtain the light cone, which includes an output end, an input end, and an optical fiber section disposed between the output end and the input end. The optical fiber section includes a plurality of copper-silver-zinc alloy-plated optical fibers, which, from the inside out, consist of an optical fiber core layer 10, an optical fiber skin layer 11, and a copper-silver-zinc alloy coating layer 8. Light absorption wires 9 and gap-filling wires 7 are inserted between different copper-silver-zinc alloy-plated optical fibers.

[0092] The aforementioned light cone can be used in the fabrication of image-enhanced CCD cameras.

[0093] Example 2

[0094] This embodiment provides a method for preparing a copper-silver-zinc alloy coating by melting the alloy materials according to the proportions shown in Example 2 of Table 2, and for drawing optical fibers using a corresponding core glass rod and sheath glass tube. The optical fiber monofilaments are coated, and the material properties are tested. Specific test results are shown in Table 2. The composition and proportions of the light-absorbing glass are the same as in Example 1. An optical cone is prepared according to the method and parameters of Example 1, and the relevant parameters are detailed in Table 2.

[0095] The aforementioned light cone can be used in the fabrication of image-enhanced CCD cameras.

[0096] Example 3

[0097] This embodiment provides a method for preparing a copper-silver-zinc alloy coating by melting the alloy materials according to the proportions shown in Example 3 of Table 2, and for drawing optical fibers using a corresponding core glass rod and sheath glass tube. The optical fiber monofilaments are coated, and the material properties are tested. Specific test results are shown in Table 2. The composition and proportion of the light-absorbing glass are the same as in Example 1. An optical cone is prepared according to the method and parameters of Example 1, and the relevant parameters are detailed in Table 2.

[0098] The aforementioned light cone can be used in the fabrication of image-enhanced CCD cameras.

[0099] Example 4

[0100] This embodiment provides a method for preparing a copper-silver-zinc alloy coating by melting the alloy materials according to the proportions shown in Example 4 of Table 2, and for drawing optical fibers using a corresponding core glass rod and sheath glass tube. The optical fiber monofilaments are coated, and the material properties are tested. Specific test results are shown in Table 2. The composition and proportion of the light-absorbing glass are the same as in Example 1. An optical cone is prepared according to the method and parameters of Example 1, and the relevant parameters are detailed in Table 2.

[0101] The aforementioned light cone can be used in the fabrication of image-enhanced CCD cameras.

[0102] Example 5

[0103] This embodiment provides a method for preparing a copper-silver-zinc alloy coating by melting the alloy materials according to the proportions shown in Example 1, and for drawing optical fibers using a corresponding core glass rod and sheath glass tube. The fiber monofilaments are coated with the coating, with the coating thickness as shown in Table 2 (Example 5). The material properties are tested, and the specific test results are shown in Table 2. The composition and proportion of the light-absorbing glass are the same as in Example 1. An optical cone is prepared according to the method and parameters of Example 1, and the relevant parameters are detailed in Table 2.

[0104] The aforementioned light cone can be used in the fabrication of image-enhanced CCD cameras.

[0105] Example 6

[0106] This embodiment provides a method for preparing a copper-silver-zinc alloy coating by melting the alloy materials according to the proportions shown in Example 1, and for drawing optical fibers using a corresponding core glass rod and sheath glass tube. The fiber monofilaments are coated with the coating, with the coating thickness as shown in Table 2 (Example 6). The material properties are tested, and the specific test results are shown in Table 2. The composition and proportion of the light-absorbing glass are the same as in Example 1. An optical cone is prepared according to the method and parameters of Example 1, and the relevant parameters are detailed in Table 2.

[0107] The aforementioned light cone can be used in the fabrication of image-enhanced CCD cameras.

[0108] Example 7

[0109] This embodiment provides a method for preparing a copper-silver-zinc alloy coating by melting the alloy materials according to the proportions shown in Example 1, and for drawing optical fibers using a corresponding core glass rod and sheath glass tube. The fiber monofilaments are coated with the coating, with the coating thickness as shown in Example 7 of Table 2. The material properties are tested, and the specific test results are shown in Table 2. The composition and proportion of the light-absorbing glass are the same as in Example 1. An optical cone is prepared according to the method and parameters of Example 1, and the relevant parameters are detailed in Table 2.

[0110] The aforementioned light cone can be used in the fabrication of image-enhanced CCD cameras.

[0111] Example 8

[0112] This embodiment provides a method for preparing a copper-silver-zinc alloy coating by melting the alloy materials according to the proportions shown in Example 1, and for drawing optical fibers using a corresponding core glass rod and sheath glass tube. The fiber monofilaments are coated with the coating, with the coating thickness as shown in Example 8 of Table 2. The material properties are tested, and the specific test results are shown in Table 2. The composition and proportion of the light-absorbing glass are the same as in Example 1. An optical cone is prepared according to the method and parameters of Example 1, and the relevant parameters are detailed in Table 2.

[0113] The aforementioned light cone can be used in the fabrication of image-enhanced CCD cameras.

[0114] The light cones obtained in Examples 1-8 were subjected to transmittance and electromagnetic pulse (EMP) protection effectiveness tests. The test methods were as follows: The transmittance of the panel was calculated by comparing the intensity of the incident and emitted light; measurements were taken at multiple frequency points on a conventional panel, and the received value PO at each frequency was recorded; then, measurements were taken at multiple frequency points on the examples with the metal coating, and the received value PI at each frequency was recorded, calculating the shielding effectiveness of the coated light cone; the coating elongation was measured using an electronic universal testing machine.

[0115] Table 2 Performance test table of the alloy composition and formulation of the coated light cones prepared in Examples 1-8

[0116]

[0117] As can be seen from the data in Table 2, in Examples 1-8 of the present invention, the Cu content in the copper-silver-zinc alloy coating composition of Examples 1-4 increases sequentially, the Ag content decreases accordingly, the Zn content remains unchanged, and the coating thickness is 18 μm; the copper-silver-zinc alloy coating composition of Examples 5-8 is consistent with that of Example 1, and the coating thickness increases by 2 μm sequentially. The copper-silver-zinc alloy coatings of Examples 1-8 have a refractive index of 1.24~1.28 at a wavelength of 532 nm, a reflectivity of 80%~82% at a wavelength of 532 nm, a conductivity of 95.2~97.8% IACS, and a coating elongation of 27.6%~28.1%.

[0118] The light cones in Examples 1-4 exhibit a transmittance of 40.01%~40.65% at a wavelength of 532nm; their shielding effectiveness reaches 84.74dB~86.13dB under a test environment with an electromagnetic radiation intensity of 10V / m and a radiation frequency fluctuation range of 80MHz~1GHz. Ag is softer and has better conductivity than Cu. When electromagnetic pulse interference occurs, the external copper-silver-zinc alloy coating effectively reflects the pulse signal, and some of the pulse signal entering the coating is discharged along the direction of the coating, thus reducing interference to the light cone's transmitted signal. Therefore, as the Ag content decreases, the light cone's resistance to electromagnetic pulses weakens, and the conductivity and elongation of the copper-silver-zinc alloy coating also decrease. With the decrease in the reflectivity of the copper-silver-zinc alloy coating, optical crosstalk between optical fibers increases slightly; simultaneously, optical signal leakage decreases, and the transmittance of the light cone also decreases accordingly. The performance of the above-mentioned light cones meets the requirements of steps 101-103 and 201-208.

[0119] The light cones in Examples 5-8 exhibit a transmittance of 40.68%~40.71% at a wavelength of 532nm; their shielding effectiveness reaches 86.2dB~86.70dB under test environments with electromagnetic radiation intensity of 10V / m and a radiation frequency fluctuation range of 80MHz~1GHz. With increasing copper-silver-zinc alloy coating thickness, in the presence of electromagnetic pulse interference, the external copper-silver-zinc alloy coating can more effectively reflect the pulse signal, directing the pulse signal entering the copper-silver-zinc alloy coating along the direction of the coating, thereby reducing interference to the light cone's transmitted signal. Therefore, increasing the copper-silver-zinc alloy coating thickness helps increase the light cone's resistance to electromagnetic pulses, reduces light signal leakage, and consequently increases the light cone's transmittance. However, the increase in transmittance and shielding effectiveness is not significant. It can be seen that when the thickness of the copper-silver-zinc alloy coating is 18μm, the prepared light cone can be guaranteed to have high anti-interference performance. The performance of the light cone meets the requirements of steps 101-103 and 201-208, and the preparation cost of the light cone can be effectively controlled.

[0120] Comparative Example 1

[0121] Core and skin glass rods were prepared according to the core and skin glass assembly ratio shown in Example 1. The metal ratio was adjusted, and the copper-silver-zinc coating used a metal with a copper content of 60 wt%, a silver content of 38 wt%, a zinc content of 2 wt%, an oxygen content of 4.8 ppm, a total iron, nickel, sulfur, and phosphorus content of 8 ppm, and a total content of other impurities of 6 ppm. Then, a light cone was prepared by inserting light-absorbing wires, structural wires, etc. Because the copper content in the copper-silver-zinc alloy coating is high, and the copper-silver ratio reaches 98 wt%, the melting point of the metal is significantly increased, exceeding 950°C. The coating temperature needs to be increased to completely melt the copper-silver-zinc alloy coating. Due to the excessively high coating temperature, the optical fiber monofilaments deformed, making it impossible to complete the monofilament coating process and thus preventing the formation of a light cone.

[0122] Comparative Example 2

[0123] Core and skin glass rods were prepared according to the core and skin glass assembly ratio shown in Example 1. Then, the thickness of the copper-silver-zinc coating was reduced, and an optical fiber monofilament with a 10 μm copper-silver-zinc coating was inserted into the optical absorption wire, structural wire, etc., to prepare an anti-interference optical cone. The remaining steps and parameters were consistent with those in Example 1, and an anti-interference optical cone was prepared. The shielding ability of the optical cone in Comparative Example 2 was significantly reduced, and the shielding effectiveness dropped to about 45 dB.

[0124] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some embodiments, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0125] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0126] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

[0127] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A method for preparing a light cone with high transmittance, anti-crosstalk, and resistance to high-frequency pulses, characterized in that, Includes the following steps: a. The tubing is fitted onto the core rod to form an optical fiber preform; b. The optical fiber preform obtained in step a is melted into an optical fiber monofilament and subjected to metal coating treatment, with a metal coating deposited on the outer surface to form a metal-coated optical fiber monofilament; the metal coating is composed of a copper-silver-zinc alloy; by weight percentage, the sum of the contents of copper, silver, and zinc in the copper-silver-zinc alloy is ≥99.99wt%, and the content of copper is 15wt%~50wt%, the content of silver is 10wt%~80wt%, and the content of zinc is 5wt%~40wt%; the oxygen content in the copper-silver-zinc alloy is <5ppm, the sum of the contents of iron, nickel, sulfur, and phosphorus is ≤8ppm, and the sum of the contents of other impurities is ≤6ppm; the thickness of the metal coating is ≥18μm; the coating temperature is 775~800℃; c. Draw the black absorbing rod into a light-absorbing filament. Arrange the metal-coated fiber monofilaments obtained in step b into a hexagonal close packing. Fill the gaps between the metal-coated fiber monofilaments with the light-absorbing filament to obtain a primary composite rod. Draw the primary composite rod into a primary fiber filament. d. Multiple primary fiber filaments are arranged in a hexagonal close-packed arrangement, and light-absorbing filaments are inserted into the gaps formed by the hexagonal close-packed arrangement of the multiple primary fiber filaments according to a certain pattern to obtain a primary composite rod; the primary composite rod is drawn into a primary multifilament; the primary multifilament is then cut in a constant manner, arranged in a hexagonal close-packed arrangement, and bundled to obtain a secondary composite rod; the secondary composite rod is drawn into a secondary multifilament; the secondary multifilament is then cut in a constant manner, arranged in a hexagonal close-packed arrangement, and bundled to obtain a secondary multifilament rod; e. The secondary composite rod obtained in step d is drawn at 660~680℃ to obtain molten fiber bundles; After being cut to a fixed length, a cylindrical blank is obtained through mechanical cold working. The blank is then stretched at a temperature of 780~800℃ and a tensile force of 300~400N. After stretching, it is cut from the center to obtain two symmetrical conical blanks. The light cone blanks are then subjected to optical finishing and optical polishing to obtain the light cone with high transmittance, anti-crosstalk and anti-high frequency pulse properties.

2. The method for preparing a high-transmittance, crosstalk-resistant, and electromagnetic pulse-resistant light cone as described in claim 1, characterized in that, In step a, the refractive index of the tubing at a wavelength of 532 nm is 1.50~1.51, and the refractive index of the core rod at a wavelength of 532 nm is 1.80~1.81; in step c, the primary composite rod includes metal-plated fiber monofilaments and light-absorbing filaments; the black absorbing rod uses glass with an absorption coefficient of 0.95 or higher in the 500~600 nm wavelength range.

3. The method for preparing a high-transmittance, crosstalk-resistant, and electromagnetic pulse-resistant light cone as described in claim 1, characterized in that, In step b, the preparation method of the copper-silver-zinc alloy includes the following steps: The alloy composition and corresponding proportions are determined according to the following: the sum of the contents of copper, silver, and zinc in the copper-silver-zinc alloy is ≥99.99wt%, and the contents of copper are 15wt%~50wt%, silver is 10wt%~80wt%, and zinc is 5wt%~40wt%. Appropriate elemental metal materials are selected as raw materials, and the metal raw materials are pretreated. The pretreated metal raw materials are heated to 775~800℃ while stirring until the metal is completely melted and uniformly mixed to obtain the copper-silver-zinc alloy.

4. A high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant optical cone prepared by the method according to any one of claims 1-3, characterized in that, It includes an output end, an input end, and an optical fiber section disposed between the output end and the input end; the optical fiber section includes a plurality of copper-silver-zinc alloy-coated optical fibers, which, from the inside out, consist of an optical fiber core, an optical fiber sheath, and a copper-silver-zinc alloy coating, with light-absorbing wires and gap-filling wires inserted between different copper-silver-zinc alloy-coated optical fibers; by weight percentage, the sum of the contents of copper, silver, and zinc in the copper-silver-zinc alloy coating is ≥99.99wt%, and the contents of copper are 15wt%~50wt%, silver is 10wt%~80wt%, and zinc is 5wt%~40wt%; the thickness of the copper-silver-zinc alloy coating is ≥18μm.

5. An image-enhanced CCD camera, characterized in that, The image-enhanced CCD camera includes the high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant light cone as described in claim 4.

6. An image-enhanced CMOS camera, characterized in that, The image-enhanced CMOS camera includes the high-transmittance, crosstalk-resistant, and high-frequency pulse-resistant light cone as described in claim 4.

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