Ultrahigh-temperature optical fiber collimator

Abstract

The utility model discloses an ultrahigh-temperature optical fiber collimator, and relates to the technical field of optics. According to the technical key points, a metal cylinder body is included, one end of the metal cylinder body is provided with a mounting notch, and the other end of the metal cylinder body is connected with a tail pipe protection cap; a lens is placed in the mounting notch of the metal cylinder body; a pressing ring is arranged at one end of the lens far away from the tail pipe protective cap; an external thread is arranged at the position, corresponding to the mounting notch, of the outer side of the metal barrel body, a protective cover is arranged on the outer side of the pressing ring, and a cover body of the protective cover sleeves the external thread on the outer side of the metal barrel body and is in threaded connection with the metal barrel body; an optical fiber is arranged in the metal cylinder body, and a conical self-locking assembly used for fixing the position of the optical fiber is arranged in the tail pipe protection cap. The optical fiber in the lens and the optical fiber in the tail tube protection cap are both clamped and fixed in a mechanical mode, and it is effectively guaranteed that the optical fiber collimator is not prone to faults when used at the high temperature for a long time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical technology, in particular to a super high temperature type optical fiber collimator. BACKGROUND

[0002] The optical fiber collimator is an optical device used to convert the divergent light beam output by the optical fiber into a parallel light beam or emit a collimated light beam into the optical fiber. Its main function is to achieve the collimation or focusing of the light beam through optical modulation, thereby improving the efficiency and quality of optical fiber communication. The optical fiber collimator is usually composed of an optical fiber end face and a lens, which utilizes the principles of refraction and reflection of light to collimate or focus the light beam. Specifically, the close connection between the optical fiber end face and the lens can achieve efficient transmission and collimation of the light beam.

[0003] The existing optical fiber collimator usually fixes the lens in the lens barrel through ordinary epoxy resin adhesive material. Although the epoxy resin has good fixing effect during assembly, its heat resistance limit is only 250 DEG C. For general use scenarios, the epoxy resin is sufficient, but in some extreme environments such as industry and aerospace, the use temperature often reaches more than 250 DEG C. At this time, the performance of the epoxy resin adhesive often becomes unstable after a period of use, thereby affecting its fixing effect on the lens. Therefore, it is urgent to provide a new type of optical fiber collimator with more stable structure and long-term use in high temperature environment. CONTENT OF THE INVENTION

[0004] The present application provides a super high temperature type optical fiber collimator, which can improve the stability of the optical fiber collimator when used in high temperature environment.

[0005] The above-mentioned object of the present application is realized by the following technical scheme:

[0006] A super high temperature type optical fiber collimator, comprising a metal barrel, one end of the metal barrel is provided with a mounting slot, the other end of the metal barrel is connected with a tail pipe protection cap, the internal space of the tail pipe protection cap is in communication with the internal space of the metal barrel;

[0007] The lens is placed in the mounting slot of the metal barrel, the lens is provided with a pressing ring at the end away from the tail pipe protection cap, the center area of the lens is opposite to the center area of the pressing ring; the outer side of the metal barrel is provided with an external thread at the position corresponding to the mounting slot, the outer side of the pressing ring is provided with a protective cover, the cover body of the protective cover is sleeved on the external thread of the outer side of the metal barrel and is threadedly connected therebetween;

[0008] The metal barrel is internally provided with an optical fiber, one end of the optical fiber is directed towards the lens and has a spacing therebetween, the other end of the optical fiber is drawn out from a port of the tail pipe protection cap away from one end of the metal barrel, the tail pipe protection cap is internally provided with a tapered self-locking assembly for fixing the position of the optical fiber.

[0009] Further, a metal adjusting member is mounted in the metal barrel, a through hole is arranged in the center of the metal adjusting member, the end of the optical fiber directed towards the lens is mounted in the through hole in the metal adjusting member through a ceramic ferrule; the ceramic ferrule is flush with the adjacent side end face of the metal adjusting member near the end of the lens and both have a spacing with the lens; the other end of the ceramic ferrule is located outside the corresponding side end face of the metal adjusting member.

[0010] Further, the tapered self-locking assembly comprises a metal tail vertebra, a wire passing hole is arranged in the center of the metal tail vertebra, the optical fiber outside the end of the ceramic ferrule away from the lens is arranged in the wire passing hole;

[0011] The metal tail vertebra is tapered as a whole, the end of the metal tail vertebra with large diameter is directed towards the ceramic ferrule, the end of the metal tail vertebra with small diameter is inserted into the port of the tail pipe protection cap away from one end of the metal barrel, the outside of the body of the metal tail vertebra is sleeved with a tail vertebra locking nut matched with the external contour shape thereof, rotating the tail vertebra locking nut outside the metal tail vertebra can adjust the clamping state of the metal tail vertebra to the optical fiber.

[0012] Further, the end of the metal tail vertebra with large diameter is provided with a circular positioning groove with the same diameter as the ceramic ferrule in the center, the end of the ceramic ferrule away from the lens is inserted into the circular positioning groove.

[0013] Further, a jackscrew for fixing the metal tail vertebra is mounted on the port of the tail pipe protection cap away from one end of the metal barrel.

[0014] Further, the gaps on the ends of the metal barrel and the tail pipe protection cap away from each other are all subjected to welding packaging treatment.

[0015] Further, a metal threaded tube is sleeved outside the part of the optical fiber drawn out from the port of the tail pipe protection cap away from one end of the metal barrel, one end of the metal threaded tube is fixedly connected with the tail pipe protection cap.

[0016] Further, the optical fiber is a gold optical fiber.

[0017] Further, the material of the lens is fused quartz material.

[0018] Further, the metal barrel, the tail pipe protection cap, the compression ring, the protection cover, the tapered self-locking assembly, the top screw and the metal threaded pipe are made of high-temperature-resistant aluminum alloy.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] The lens in the optical fiber collimator is installed in the installation slot of the metal barrel, a compression ring is placed outside the lens, a protection cover is sleeved outside the compression ring, the protection cover is connected with the outer threaded area outside the metal barrel by screwing the protection cover, and the protection cover gradually presses the cover plate on the compression ring by continuing to screw the protection cover, until the lens is clamped and fixed in the installation slot of the metal barrel by the compression ring. The lens is mainly fixed by the mechanical clamping and fixing mode of the protection cover cooperating with the compression ring, which effectively solves the problem of unstable performance of the optical fiber collimator working in a high-temperature environment. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0023] Figure 2 is a front view of the overall structure of the present application;

[0024] Figure 3 is a sectional view of the present application.

[0025] Reference signs: 1, metal barrel; 2, installation slot; 3, tail pipe protection cap; 4, lens; 5, compression ring; 6, protection cover; 7, optical fiber; 8, tapered self-locking assembly; 81, metal tail; 82, tail locking nut; 9, metal adjusting part; 10, ceramic insert; 11, circular positioning groove; 12, top screw; 13, metal threaded pipe. DETAILED DESCRIPTION

[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0027] As shown in Figures 1-3 Fig. 1 is a schematic view of an ultra-high temperature optical fiber collimator disclosed by the present application, which comprises a metal barrel 1, one end of the metal barrel 1 is provided with a mounting slot 2, the other end of the metal barrel 1 is connected with a tail pipe protection cap 3, the internal space of the tail pipe protection cap 3 is communicated with the internal space of the metal barrel 1;

[0028] A lens 4 is placed in the mounting slot 2 of the metal barrel 1, the lens 4 is provided with a pressing ring 5 away from the tail pipe protection cap 3, the center area of the lens 4 is opposite to the center area of the pressing ring 5; the outer side of the metal barrel 1 at the position corresponding to the mounting slot 2 is provided with external threads, the outer side of the pressing ring 5 is provided with a protective cover 6, the cover body of the protective cover 6 is sleeved on the external threads of the outer side of the metal barrel 1 and is threadedly connected therebetween;

[0029] An optical fiber 7 is arranged in the metal barrel 1, one end of the optical fiber 7 is directed to the lens 4 and has a spacing therebetween, the other end of the optical fiber 7 is led out from the port of the tail pipe protection cap 3 away from the metal barrel 1, the tail pipe protection cap 3 is provided with a tapered self-locking assembly 8 for fixing the position of the optical fiber 7.

[0030] In the above embodiments, the diameter of the mounting slot 2 at the end of the metal barrel 1 and the diameter of the lens 4 are similar and both are greater than the inner diameter of the channel at the middle position of the metal barrel 1, so that when the lens 4 is placed in the mounting slot 2, it can be ensured that the lens 4 will be clamped in the mounting slot 2. The port of the metal barrel 1 near the tail pipe protection cap 3 is provided with a groove along the circumference thereof, and the end of the tail pipe protection cap 3 near the metal barrel 1 is provided with a protrusion matched with the groove, when the metal barrel 1 and the tail pipe protection cap 3 are connected together, the protrusion on the tail pipe protection cap 3 can be inserted into the groove of the metal barrel 1, so that the dustproof effect of the joint between the metal barrel 1 and the tail pipe protection cap 3 can be effectively increased. In actual production, if it is desired to further improve the sealing performance of the entire device, the joint between the tail pipe protection cap 3 and the metal barrel 1 can be packaged by welding, so that the assembled metal barrel 1 and tail pipe protection cap 3 form an integrated structure.

[0031] The cover plate of the protective cover 6 arranged outside the pressing ring 5 is provided with a through hole in the center thereof, the diameter of the through hole is greater than the diameter of the middle through hole of the pressing ring 5, so that after the pressing ring 5 is pressed by the protective cover 6, the cover plate of the protective cover 6 can avoid blocking the light signal emitted from the lens 4.

[0032] The lens 4 in the optical fiber collimator is installed in the mounting slot 2 of the metal barrel 1, a pressing ring 5 is placed outside the lens 4, a protective cover 6 is sleeved outside the pressing ring 5, the protective cover 6 is connected with the outer threaded area outside the metal barrel 1 by screwing the protective cover 6, and the protective cover 6 gradually presses the cover plate on the pressing ring 5 along with the continuous screwing of the protective cover 6, until the lens 4 is clamped and fixed in the mounting slot 2 of the metal barrel 1 by the pressing ring 5, and the fixing mode of the lens 4 in the application mainly adopts the mechanical clamping and fixing mode of the lens 4 by the protective cover 6 and the pressing ring 5. Compared with the fixing mode of the prior art which adopts epoxy resin for bonding, since the epoxy resin is not used for bonding, the problem of unstable performance of the optical fiber collimator when working in a high temperature environment is effectively solved. The tapered self-locking assembly 8 is arranged in the tail pipe protection cap 3, and the optical fiber 7 arranged in the metal barrel 1 and the tail pipe protection cap 3 is also fixed by the mechanical pressing mode, so that the stability of the optical fiber 7 when used in a high temperature environment is effectively improved.

[0033] Further, as shown in Figure 3 The metal adjusting part 9 is installed in the metal barrel 1, the center of the metal adjusting part 9 is provided with a through hole, one end of the optical fiber 7 towards the lens 4 is installed in the through hole in the metal adjusting part 9 through the ceramic ferrule 10, the ceramic ferrule 10 is flush with the lens 4 and the adjacent side end face of the metal adjusting part 9, and the other end of the ceramic ferrule 10 is located outside the corresponding side end face of the metal adjusting part 9.

[0034] In the above embodiment, in production, after the focal length parameters of the optical fiber collimator are confirmed by the designer, the distance between the front end of the optical fiber 7 and the installed lens 4 is known, and the position of the metal adjusting part 9 provided with the optical fiber 7 to be installed in the metal barrel 1 is also determined by the technician, so that the technician only needs to adjust and install the metal adjusting part 9 in the metal barrel 1 as required, and the distance between the front end of the optical fiber 7 on the metal adjusting part 9 and the lens 4 can meet the requirements of the focal length of the product. The through hole arranged in the metal adjusting part 9 can provide space for the installation of the ceramic ferrule 10, and the ceramic ferrule 10 is used to fix the optical fiber 7 in the metal adjusting part 9, which can effectively avoid the optical axis deviation caused by temperature change in a high temperature environment.

[0035] Further, as shown in Figure 3 The tapered self-locking assembly 8 includes a metal tail vertebra 81, the center of the metal tail vertebra 81 is provided with a wiring through hole, and the optical fiber 7 outside the end of the ceramic ferrule 10 away from the lens 4 is arranged in the wiring through hole;

[0036] The metal tail vertebra 81 is conical as a whole, the end of the metal tail vertebra 81 with a large diameter is towards the ceramic plug 10, the end of the metal tail vertebra 81 with a small diameter is inserted into the port of the tail pipe protection cap 3 away from the metal barrel body 1, the outside of the body of the metal tail vertebra 81 is sleeved with a tail vertebra locking nut 82 matched with the external contour shape of the metal tail vertebra 81, and rotating the tail vertebra locking nut 82 on the outside of the metal tail vertebra 81 can adjust the clamping state of the metal tail vertebra 81 to the optical fiber 7.

[0037] In the above embodiment, the metal tail vertebra 81 is conical as a whole, and a through hole is arranged at the center of the metal tail vertebra 81, the optical fiber 7 coming out of the ceramic plug 10 can pass through the through hole and be inserted into the metal tail vertebra 81, and when the tail vertebra locking nut 82 sleeved on the outside of the metal tail vertebra 81 moves towards the end of the metal tail vertebra 81 with a large diameter, the through hole in the metal tail vertebra 81 can be automatically contracted, so as to achieve the clamping and fixing effect to the optical fiber 7, and when the tail vertebra is retracted and the nut moves towards the end of the metal tail vertebra 81 with a small diameter, the through hole in the metal tail vertebra 81 can be reset under the action of the elastic force, so as to achieve the effect of loosening the optical fiber 7. The conical self-locking assembly 8 of this structure selected by the present application is a common self-locking clamp, for example, the device disclosed in the patent document with the application number 201721627813.9 is similar to the conical self-locking assembly 8 in the present application, therefore, some structural details and specific principles of the conical self-locking assembly 8 of the present application will not be repeated here. The present application can realize the mechanical clamping and fixing effect to the optical fiber 7 by screwing the tail vertebra locking nut 82 to extrude and contract the internal through hole of the metal tail vertebra 81, so that the trouble of using chemical adhesive materials can be avoided, and the stability of the structure of the optical fiber collimator when used in a high temperature environment can be improved.

[0038] Further, as shown in Figure 3 , the end of the metal tail vertebra 81 with a large diameter is provided with a circular positioning groove 11 with the same diameter as the ceramic plug 10, and the end of the ceramic plug 10 away from the lens 4 is inserted into the circular positioning groove 11.

[0039] In the above embodiment, the circular positioning groove 11 arranged on the metal tail vertebra 81 in the above manner can facilitate the technical personnel to quickly realize the effect of aligning the metal tail vertebra 81 and the circular positioning groove 11 by aligning the circular positioning groove 11 on the metal tail vertebra 81 with the ceramic plug 10 when assembling the optical fiber collimator, and the end of the metal tail vertebra 81 with a large diameter is sleeved on the ceramic plug 10, and the end with a small diameter is inserted into the port of the tail pipe protection cap 3 away from the metal barrel body 1, so that the metal tail vertebra 81 can obtain a stable supporting force in the optical fiber collimator.

[0040] Further, as shown in Figure 1 and Figure 3 , the port of the tail pipe protection cap 3 away from the metal barrel body 1 is provided with a top wire 12 for fixing the metal tail vertebra 81.

[0041] In the above embodiment, the metal tail vertebra 81 can be inserted into the part of the tail pipe protection cap 3 away from the metal barrel 1 through the taphole 12 to limit and fix, so as to prevent the optical fiber collimator from shaking during use.

[0042] Further, the gap on the end away from each other of the metal barrel 1 and the tail pipe protection cap 3 is welded and packaged.

[0043] In the above embodiment, the metal barrel 1 is sealed with the protection cover 6 by welding packaging at the end away from the tail pipe protection cap 3, so as to ensure that the protection cover 6 will not be easily loosened after tightening, thereby avoiding the dust and moisture in the environment from entering the inside of the metal barrel 1. In actual use, a flat lens 4 can be fixed and installed on the compression ring 5, and the fixed compression ring 5 and the protection cover 6 are welded and packaged, so as to ensure that the light beam in the optical fiber collimator can be smoothly output, and also reduce the risk of dust and moisture entering the inside of the device from the gap between the compression ring 5 and the protection cover 6. The end of the tail pipe protection cap 3 away from the metal barrel 1, i.e. the position where the small diameter end of the metal tail vertebra 81 is inserted, is sealed by welding packaging after the metal tail vertebra 81 is fixed by the taphole 12, so as to prevent the dust and moisture in the environment from entering the inside of the device from the tail pipe protection cap 3, affecting the normal use of the device. The welding packaging method is used to process the gap in the device, which has higher reliability at high temperature than using chemical adhesive materials for plugging.

[0044] Further, as shown in Figures 1-3 The part of the optical fiber 7 extending out of the end of the tail pipe protection cap 3 away from the metal barrel 1 is sleeved with a metal threaded pipe 13, and one end of the metal threaded pipe 13 is fixedly connected with the tail pipe protection cap 3.

[0045] In the above embodiment, the bending stress of the optical fiber 7 can be dispersed to the outside of the device by the metal threaded pipe 13, thereby reducing the risk of the optical fiber 7 being bent at right angles during use.

[0046] Further, the optical fiber 7 is a gold optical fiber 7.

[0047] In the above embodiment, the gold optical fiber 7 is selected for the optical fiber 7 in the present application because the gold optical fiber 7 has a temperature resistance of up to 1000℃, and its stable working ability at high temperature is obviously better than that of ordinary optical fibers 7.

[0048] Further, the material of the lens 4 is fused quartz material.

[0049] In the above embodiment, the lens 4 material of the present application is selected to be fused quartz material because the lens 4 made of fused quartz material has excellent high temperature stability.

[0050] Further, the materials of the metal barrel 1, the tail pipe protection cap, the pressing ring 5, the protection cover 6, the tapered self-locking assembly 8, the top screw 12 and the metal threaded pipe 13 are all high-temperature-resistant aluminum alloy.

[0051] In the above embodiments, the materials of the mechanical structural parts in the device of the application are all high-temperature-resistant aluminum alloy, because the high-temperature-resistant aluminum alloy can withstand a temperature of 1200°C in actual use, and under this condition, the material does not release stress, does not deform, and does not produce an oxidation layer.

[0052] The implementation principle of the embodiment is as follows: when assembling the optical fiber collimator of the application, the lens 4 is first placed in the mounting slot 2 of the metal barrel 1, then the pressing ring 5 is placed outside the lens 4, and the protection cover 6 is buckled outside the pressing ring 5, and the lens 4 is fixed in the mounting slot of the metal barrel 1 by rotating the protection cover 6 to extrude the pressing ring 5. Next, the distance between the metal adjusting part 9 and the lens 4 in the metal barrel 1 is adjusted according to the focal length requirement of the optical fiber collimator and fixed, the circular positioning groove 11 on the end of the metal tail barrel 81 with a large diameter is sleeved on the ceramic plug 10 on the metal adjusting part 9, the optical fiber 7 is clamped by rotating the tail barrel locking nut 82, the tail pipe protection cap 3 and the metal barrel 1 are connected, the top screw 12 on the tail pipe protection cap 3 is adjusted to further fix the metal tail barrel 81, and finally the gaps on the device that may affect the sealing are welded and packaged. Compared with the prior art, the lens 4 and the optical fiber 7 in the tail pipe protection cap 3 in the application are clamped and fixed by mechanical means, and the use of chemical adhesive materials with poor performance stability in high-temperature environments is avoided, thereby ensuring that the optical fiber collimator of the application will not easily malfunction when used in high-temperature environments for a long time.

[0053] Through simulation of high-temperature conditions in a laboratory environment, high-temperature testing and high-temperature cycle testing are performed on the optical fiber collimator of the application, and it is actually verified that the optical fiber collimator of the application has sufficient stability and reliability even in an environment above 600°C.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for part or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. An ultra-high temperature optical fiber collimator, characterized by: The utility model provides a kind of optical fiber connector, including metal barrel (1), one end of the metal barrel (1) is equipped with installation notch (2), the other end of the metal barrel (1) is connected with tail pipe protection cap (3), the internal space of the tail pipe protection cap (3) is communicated with the internal space of the metal barrel (1); The lens (4) is placed in the installation notch (2) of the metal barrel (1), the lens (4) is equipped with the pressing ring (5) away from the tail pipe protection cap (3) one end, the center area of the lens (4) is opposite the center area of the pressing ring (5);The outside of the metal barrel (1) is equipped with external thread at the position corresponding to the installation notch (2), the outside of the pressing ring (5) is equipped with protective cover (6), the cover body of the protective cover (6) is sleeved on the external thread of the outside of the metal barrel (1) and is threadedly connected between the two; The metal barrel (1) is equipped with optical fiber (7), one end of the optical fiber (7) is towards the lens (4) and has interval between the two, the other end of the optical fiber (7) is out of the port from the end of the tail pipe protection cap (3) away from the metal barrel (1), the tail pipe protection cap (3) is equipped with tapered self-locking assembly (8) for fixing the position of the optical fiber (7).

2. The ultra-high temperature fiber collimator of claim 1, wherein: The metal barrel (1) is installed with metal adjusting part (9), the center of the metal adjusting part (9) is equipped with a through hole, the optical fiber (7) is installed in the through hole in the metal adjusting part (9) by ceramic ferrule (10) towards the lens (4) one end;The ceramic ferrule (10) is flush with the lens (4) one end and the adjacent side end face of the metal adjusting part (9) and both have interval with the lens (4), the other end of the ceramic ferrule (10) is located on the outside of the corresponding side end face of the metal adjusting part (9).

3. The ultra-high temperature fiber collimator of claim 2, wherein: The tapered self-locking assembly (8) includes metal tail vertebra (81), the center of the metal tail vertebra (81) is equipped with a wiring through hole, the optical fiber (7) outside the ceramic ferrule (10) away from the lens (4) one end is arranged in the wiring through hole; The metal tail vertebra (81) is conical as a whole, the end of the metal tail vertebra (81) with large diameter is towards the ceramic ferrule (10), the end of the metal tail vertebra (81) with small diameter is inserted in the port from the end of the tail pipe protection cap (3) away from the metal barrel (1), the outside of the vertebra body of the metal tail vertebra (81) is sleeved with tail vertebra locking nut (82) matched with the external contour shape, the tail vertebra locking nut (82) is rotated on the outside of the metal tail vertebra (81) to adjust the clamping state of the metal tail vertebra (81) to the optical fiber (7).

4. The ultra-high temperature fiber collimator of claim 3, wherein: The end of the metal tail vertebra (81) with large diameter is equipped with circular positioning groove (11) with the same diameter as the ceramic ferrule (10), the ceramic ferrule (10) away from the lens (4) one end is inserted in the circular positioning groove (11).

5. The ultra-high temperature fiber collimator of claim 3, wherein: The top wire (12) for fixing the metal tail vertebra (81) is installed on the port of the tail pipe protection cap (3) away from the metal barrel (1).

6. The ultra-high temperature fiber collimator of claim 5, wherein: The gaps on the mutually faraway ends of the metal barrel (1) and the tail pipe protection cap (3) are welded and sealed.

7. The ultra-high temperature fiber collimator of claim 5, wherein: The outer side of the part of the optical fiber (7) extending out of the end port of the tail pipe protection cap (3) away from the metal barrel (1) is sleeved with a metal threaded pipe (13), one end of the metal threaded pipe (13) is fixedly connected with the tail pipe protection cap (3).

8. The ultra-high temperature fiber collimator according to any one of claims 1 to 7, characterized in that: The optical fiber (7) is a gold optical fiber (7).

9. The ultra-high temperature fiber collimator of claim 8, wherein: The material of the lens (4) is fused quartz.

10. The ultra-high temperature fiber collimator of claim 7, wherein: The materials of the metal barrel (1), the tail pipe protection cap, the pressing ring (5), the protection cover (6), the conical self-locking assembly (8), the top screw (12) and the metal threaded pipe (13) are all high-temperature-resistant aluminum alloy.

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