CN115353283A - Optical fiber image transmission element and preparation method and application thereof - Google Patents
Optical fiber image transmission element and preparation method and application thereof Download PDFInfo
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- CN115353283A CN115353283A CN202211101770.6A CN202211101770A CN115353283A CN 115353283 A CN115353283 A CN 115353283A CN 202211101770 A CN202211101770 A CN 202211101770A CN 115353283 A CN115353283 A CN 115353283A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/70—Cleaning, e.g. for reuse
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
- G02B6/08—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images with fibre bundle in form of plate
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- General Chemical & Material Sciences (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention relates to an optical fiber image transmission element and a preparation method and application thereof. The method comprises the following steps: 1) Before the combination of the leather tube and the core rod, carrying out first cleaning on the leather tube and the core rod; the first cleaning is to wipe, dry and remove floating dust from the leather hose and the core rod by alcohol; 2) Before the optical fiber monofilaments are arranged, carrying out secondary cleaning on the optical fiber monofilaments, wherein the secondary cleaning is to wipe the optical fiber monofilaments with alcohol firstly and then carry out ultrasonic cleaning with the alcohol; 3) Before arranging the optical fiber monofilaments, before arranging the primary multifilaments and before arranging the secondary multifilaments; the step of picking the silk comprises the following steps: and (5) heightening the head and the tail of each filament, separately placing the filaments, and detecting and selecting the filaments in a darkroom by illumination. The technical problem solvedHow to effectively control the number of spots and the sizes of the spots in the optical fiber image-transmitting element so that every 1000mm in the optical fiber image-transmitting element with the thickness of 1-50 mm 2 The number of spots in the effective area of (2) is < 10, and the diameter of each spot is < 60 mu m.
Description
Technical Field
The invention belongs to the technical field of optical fiber manufacturing, and particularly relates to an optical fiber image transmission element and a preparation method and application thereof.
Background
With the gradual development of low-light level night vision, the requirements of the core indexes of low-light level night vision devices, such as sensitivity, resolution, signal-to-noise ratio and the like, are gradually improved from zero generation, first generation, second generation, super second generation and third generation, and the comprehensive performance of the required hard optical fiber image transmission element, including the requirements of image transmission, is also improved. The speckle in the optical fiber image-transmitting element is one of the most important factors for limiting the performance index. Speckle is a defect inside a fiber optic inverter, being a connected fiber optic filament with a diffuse transmittance of less than 70% over 24 um. Where speckle is present, the fiber will not transmit the image, so it is desirable to have as few speckle defects and as small a speckle size as possible inside the fiber optic inverter.
A typical production process in the prior art includes the steps of drawing a fiber optic monofilament after a combination of a sheath and a core rod, drawing a primary multifilament after arranging the fiber optic monofilament into a primary multifilament rod, drawing a secondary multifilament after arranging the primary multifilament into a secondary multifilament rod, and fusing the secondary multifilaments by hot pressing after arranging them. Before the optical fiber monofilament is drawn after the combination of the leather tube and the core rod, the rod tube is cleaned by purified water in an ultrasonic mode; after the optical fiber monofilaments are obtained by drawing a rod tube, wiping the optical fiber monofilaments with purified water, airing the optical fiber monofilaments and arranging the optical fiber monofilaments into a primary composite rod; in the processes of drawing and rod arrangement, the optical fiber monofilaments and the primary multifilaments are both tightly placed on a stainless steel tray for circulation; the step of picking before the rod arrangement is to arrange the silk layer by layer and select the silk by naked eyes under sunlight or lamplight.
Although the prior art has performed a plurality of fine operations such as cleaning and picking, the optical fiber image transmission element prepared by the prior art method still has a large number of spots, for example, the number of spots in the effective area of the optical fiber image transmission element with a diameter of 42mm reaches about 20; and the size of each spot is also larger, and the size of a single spot reaches 90 mu m or more.
Disclosure of Invention
The invention mainly aims to provide an optical fiber image transmission element, a preparation method and application thereof, and aims to solve the technical problem of how to effectively control the number of spots and the sizes of the spots in the optical fiber image transmission element so that each 1000mm of the optical fiber image transmission element with the thickness of 1-50 mm 2 Of the effective areaThe number of dots is less than 10, and the diameter of each spot is less than 60 μm, so that the method is more suitable for practical use.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The invention provides a preparation method of an optical fiber image transmission element, which comprises the steps of drawing an optical fiber monofilament after a combination of a leather tube and a core rod, arranging the optical fiber monofilament into a primary multifilament rod, drawing the primary multifilament into a secondary multifilament rod, arranging the primary multifilament into the secondary multifilament rod, drawing the secondary multifilament rod, arranging the secondary multifilament rod, and fusing the secondary multifilament rod by hot pressing, and further comprises the following steps:
1) Before the combination of the leather tube and the core rod, carrying out first cleaning on the leather tube and the core rod; the first cleaning comprises the steps of wiping the leather hose and the core rod with alcohol, airing and removing floating dust;
2) Before the optical fiber monofilaments are arranged, carrying out second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol firstly and then carry out ultrasonic cleaning with the alcohol;
3) The optical fiber single filament, the primary multifilament and the secondary multifilament are all raised end to end, and each filament is separately placed; before the optical fiber monofilaments are arranged, before the primary multifilaments are arranged and before the secondary multifilaments are arranged, a step of picking is arranged; the step of picking the silk comprises the following steps: heightening the head and the tail of each filament, separately placing the filaments, and selecting the filaments in a darkroom by lighting detection;
4) The selected acceptable optical fiber monofilaments, primary multifilaments and secondary multifilaments are arranged into a mold one by one.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, in the preparation method, the volume concentration of the alcohol in the step 1) and the step 2) is 99.7 to 99.9 percent; the alcohol wiping is performed by dipping hundred-grade, thousand-grade or ten-thousand-grade dustless cloth in alcohol.
Preferably, in the preparation method, the removing of the floating dust in step 1) comprises the following steps: firstly, purging the leather hose and the core rod by using a deionized fan; and then, absorbing the floating ash by using dust removing equipment.
Preferably, in the preparation method, the ultrasonic cleaning in step 2) is performed under the conditions that the ultrasonic frequency is 28KHz and the ultrasonic power is 12 KW; the time of the ultrasonic treatment is less than or equal to 30s.
Preferably, the preparation method is that in the step 3), the head and the tail of each silk are heightened, and the silk is placed on a bracket; a plurality of tooth-shaped clamping grooves are formed in the support; the separated placement is that the head and the tail of each wire are respectively placed into the tooth-shaped clamping grooves, and only one wire is placed into each tooth-shaped clamping groove.
Preferably, in the preparation method, the material of the stent is a non-metal material.
Preferably, in the above preparation method, in the step 3), the lighting detection and selection is to hold the surface of one side of the lighting irradiation filament by hand, turn the filament over, hold the surface of the other side of the lighting irradiation filament by hand, and select the filament with light leakage points; the lamp light is an incandescent lamp with 5-15W.
Preferably, the aforementioned method for preparing, wherein the step 4) of arranging the sorted qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments one by one into a mold comprises:
before the fiber optic monofilament, primary multifilament and secondary multifilament arrangements, each filament is laid separately;
no glass collision sound is generated at the time of the optical fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement;
after the optical fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement, the lower filaments in contact with the arranged filaments are not vibrated as viewed with an auxiliary viewing screen or a hand-held magnifier.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to the optical fiber image transmission element prepared by the preparation method, the optical fiber image transmission element is an optical fiber image inverter, an optical fiber light cone or an optical fiber panel; the optical fiber image transmission element with the thickness of 1-50 mm has the number of spots in an effective area of 1000mm < 2 > less than 10, and the diameter of each spot is less than 60 mu m.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to the low-light level night vision device provided by the invention, the low-light level night vision device comprises the optical fiber image transmitting element; the optical fiber image transmission element is an optical fiber image inverter and/or an optical fiber panel; the optical fiber image inverter and/or the optical fiber panel are arranged in an imaging channel of the low-light night vision device.
By means of the technical scheme, the optical fiber image transmission element and the preparation method and application thereof provided by the invention at least have the following advantages:
the invention provides an optical fiber image transmission element and a preparation method and application thereof, which can control the introduction of impurity dust on one hand, and firstly, the leather hose and the core rod are cleaned firstly before the combination of the leather hose and the core rod; the first cleaning comprises the steps of wiping the leather hose and the core rod with alcohol, airing and removing floating dust; secondly, before the optical fiber monofilaments are arranged, carrying out second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol firstly and then carry out ultrasonic cleaning with the alcohol; the invention is cleaned by alcohol instead of pure water, and the main reason is to avoid air holes and dark spots caused by residual moisture; finally, the optical fiber single yarns, the primary multi-yarns and the secondary multi-yarns are all padded up and stacked end to end so as to avoid static electricity generated on the surfaces of the yarns due to the fact that the yarns are in contact with a table top or a metal tray and dust is adhered to the yarns; the introduction of impurity dust is controlled by the application of the technical means; on the other hand, the fiber optic monofilament, the primary multifilament and the secondary multifilament are separately arranged, so that the friction and the collision among the filaments are reduced as much as possible; secondly, arranging the selected qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments into a mold one by one, wherein each filament in the arrangement is arranged one by one, so that friction and collision between the filaments are avoided, and the arrangement requires to be lightly taken and lightly placed, so that the damage caused by the friction and the collision between the filaments is reduced as much as possible; the application of the technical means avoids and reduces the damage of the silk; finally, the invention sets a step of picking the fiber in the dark room in the links of the optical fiber monofilament, the primary multifilament and the secondary multifilament, and the operation is carried out by an operatorA person holds lamplight to enhance the irradiation of the surface of the filament, and visually inspects whether the filament has light leakage points; then, after the filament is turned over for 180 degrees, the surface of the filament is irradiated by hand-held light, and whether the filament has light leakage points or not is determined visually. The technical scheme of the invention carries out precise process control on the preparation process of the optical fiber image transmission element through the comprehensive application of the technical means, obtains the optical fiber image transmission element with improved spot defects, and greatly improves the quality of the optical fiber image transmission element. The optical fiber image transmission element prepared by the invention has small spot number, and in the optical fiber image transmission element with the thickness of 1-50 mm, each 1000mm 2 The number of spots in the effective area is less than 10; and the size of the spots is small, and the diameter of each spot is less than 60 mu m.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to an optical fiber image transmission element, a method for manufacturing the same, and embodiments, structures, features and effects thereof according to the present invention.
The invention provides a preparation method of an optical fiber image transmission element, which comprises the steps of drawing back to obtain optical fiber monofilaments by combining a rubber tube and a core rod, arranging the optical fiber monofilaments into a primary multifilament rod, drawing back to obtain primary multifilaments, arranging the primary multifilaments into a secondary multifilament rod, drawing back to obtain secondary multifilaments, arranging the secondary multifilaments, and then performing hot-pressing fusion.
The invention provides a preparation method of an optical fiber image-transmitting element, which mainly comprises the following steps:
firstly, before the combination of the leather tube and the core rod, carrying out first cleaning on the leather tube and the core rod; the first cleaning is to wipe, dry and remove floating dust from the leather hose and the core rod by alcohol; in the cleaning step, the volume concentration of the used alcohol is 99.7-99.9%; the alcohol wiping is performed by dipping hundred-grade, thousand-grade or ten-thousand-grade dustless cloth in alcohol; due to the volatility of the alcohol, the airing is natural airing; the removing floating dust comprises the following steps: firstly, purging the leather hose and the core rod by using a deionized fan; then, dust removing equipment is used for sucking floating ash; the technical purpose of purging the leather hose and the core rod by the deionization fan is to eliminate or reduce static electricity on the surfaces of the leather hose and the core rod, so that dust adhered to the surfaces of the leather hose and the core rod is loosened, and then, the dust removal and purification equipment is adopted to adsorb floating dust, so that the leather hose and the core rod are cleaned as much as possible, and the risk and probability of introducing impurity dust into the optical fiber are reduced.
Secondly, before the optical fiber monofilaments are arranged, carrying out second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments by using alcohol firstly and then carry out ultrasonic cleaning by using the alcohol; in the cleaning step, the volume concentration of the used alcohol is 99.7-99.9%; the alcohol wiping is performed by dipping alcohol in hundred-grade, thousand-grade or ten-thousand-grade dust-free cloth; the alcohol ultrasonic cleaning is carried out under the conditions that the ultrasonic frequency is 28KHz and the ultrasonic power is 12 KW; the ultrasonic time is less than or equal to 30s; the ultrasonic cleaning aims at shaking off impurities on the glass rod and the glass tube through ultrasonic waves, and impacting glass by using a vacuum nuclear bubble group to thoroughly clean the surface of the glass fiber; the ultrasound is not preferably applied for too long a time to avoid the impact of the ultrasonic vibrations which may cause breakage of the fiber optic monofilament and adversely affect the speckle defect.
Preferably, in order to further avoid and reduce the introduction of impurity and dust, a step of alcohol ultrasonic cleaning can be also arranged at the links of the primary multifilament and the secondary multifilament; but the time for the ultrasonic treatment is not more than 20s to avoid the breakage and breakage of the filaments because the primary multifilaments and the secondary multifilaments are thinner.
The head and the tail of the fiber are raised in the process of storing and circulating the optical fiber monofilament, the primary multifilament and the secondary multifilament repeatedly, so that the defect of spots caused by the introduction of impurities into the optical fiber image transmission element due to the fact that the surface of the fiber is contacted with dust adhered to the surface of a table or a stainless steel tray and the like is avoided. Each of the filaments is also required to be separately laid during storage and circulation of the optical fiber monofilament, the primary multi-filament and the secondary multi-filament to prevent the contact and friction between the filaments from causing the breakage of the filaments to adversely affect the spot defect. The optical fiber monofilaments, the primary multifilaments and the secondary multifilaments are raised end to end and separately placed by placing the filaments on a support; the bracket is provided with a plurality of tooth-shaped clamping grooves; the separated placement is that the head and the tail of each wire are respectively placed into the tooth-shaped clamping grooves, and only one wire is placed into each tooth-shaped clamping groove. The support can simultaneously realize the heightening and the separated placement of the head and the tail of the silk, not only can reduce the dust adhered to the surface of the silk due to static electricity, but also can avoid the damage of the silk due to friction and collision; furthermore, in order to effectively avoid and reduce static electricity, the bracket in the technical scheme of the invention is made of non-metal materials, such as plastics and rubber, for example, a polytetrafluoroethylene bracket.
Before the optical fiber monofilaments are arranged, before the primary multifilaments are arranged and before the secondary multifilaments are arranged, a step of picking is arranged; the step of picking the silk comprises the following steps: heightening the head and the tail of each filament, separately placing the filaments, and selecting the filaments in a darkroom through lamp illumination detection; the lamp illumination detection and selection is carried out in a darkroom, and an operator holds the lamp light to enhance the surface of one side of the irradiation filament so as to check whether the surface of the filament has light leakage points; if the light leakage points exist, the silk is used as waste silk to be discarded; then, the filament is manually turned over by 180 degrees, and the other side surface of the filament is irradiated by holding the lamplight to detect whether the surface of the filament has light leakage points or not, and the filament with the light leakage points is picked out and discarded. Preferably, the lamp light is an incandescent lamp with 5-15W; if the light power is too high, for example, the light power is 20W or more, the light is dazzling in the picking process, which is not favorable for searching the light avoiding point; if the lamp power is too low, for example, 3W, the light leakage points are not easily identified due to insufficient illumination, and are easily missed.
Finally, arranging the selected qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments into a mold one by one; the arrangement process of the filaments requires to be carried out lightly, so that the phenomenon that collision between the filaments is caused due to poor control of force, damage is avoided, and the defect of spots of the optical fiber image transmission element is adversely affected is avoided. Before the optical fiber single filament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement, each filament is separately placed, so that the filaments are prevented from contacting with each other to generate friction and collision; no glass collision sound is generated at the time of the optical fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement; after the fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement, the fiber monofilaments can be observed by using an auxiliary observation screen or a hand magnifier, and each filament is required to be put into a mold without any influence on the filaments below the filament and the filaments beside the filament. Once the vibrations of the underlying wire and the wires next to it are observed, it is necessary to replace this wire with the affected one in order to avoid the occurrence of spot defects.
The technical scheme of the invention overcomes the reasons of the spot defects by subdividing the reasons of the spot defects and adopting various targeted technical means, thereby realizing the control of the spot defects in the optical fiber element.
According to the invention, a large number of researches show that the reasons influencing spot defects of the optical fiber yarn mainly comprise impurities mixed in the yarn and yarn breakage, so that in the technical scheme of the invention, on one hand, the yarn breakage caused by the friction and collision between the yarn and the yarn is avoided by controlling the introduction of impurity dust and the like, and on the other hand, the spot leakage defects caused by the impurities, the breakage and the like which are not controlled in the previous link are selected and removed as waste yarn by carrying light by 360 degrees in a darkroom, the quality of the optical fiber image transmission element is greatly improved, the number of spots of the optical fiber image transmission element prepared by the technical scheme of the invention is small, and in the optical fiber image transmission element with the thickness of 1-50 mm, the number of spots of the optical fiber image transmission element is small, and in each 1000mm of the optical fiber image transmission element with the thickness of 1-50 mm 2 The number of the spots in the effective area is less than 10; and the size of the spots is small, and the diameter of each spot is less than 60 mu m.
Specifically, in the technical scheme of the invention, for the introduction control of impurity, dust and the like, firstly, the leather hose and the core rod are subjected to first cleaning before the leather hose and the core rod are combined; the first cleaning comprises the steps of wiping the leather hose and the core rod with alcohol, airing and removing floating dust; secondly, before the optical fiber monofilaments are arranged, carrying out second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments by using alcohol firstly and then carry out ultrasonic cleaning by using the alcohol; the invention is cleaned by alcohol instead of pure water, and the main reason is to avoid air holes and dark spots caused by residual moisture; and thirdly, the optical fiber monofilament, the primary multifilament and the secondary multifilament are all padded at the head and the tail and stacked, so that the situation that the filaments are contacted with a table top or a metal tray to generate static electricity on the surfaces of the filaments and cause dust adhesion of the filaments is avoided. In the technical scheme of the invention, for controlling the damage of the filament caused by the friction and the collision between the filaments, one is to separately place each filament of the optical fiber monofilament, the primary multifilament and the secondary multifilament so as to reduce the friction and the collision between the filaments; and secondly, the selected qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments are arranged into a mold one by one, each filament in the arrangement is arranged one by one, so that friction and collision between the filaments are avoided, the arrangement is required to be carried out lightly, and the breakage caused by the friction and collision between the filaments is reduced as much as possible. In the technical scheme of the invention, for filament picking, the technical scheme of the invention picks the filaments in a darkroom, thereby avoiding the influence of environmental factors on the filament picking; meanwhile, when picking the filaments, the filaments are separately placed on the bracket, an operator holds the lamplight to enhance the irradiation of the surface of the filaments, and the filaments are visually inspected whether light leakage points exist; then, after the filament is turned over for 180 degrees, the lamp light is held by hands to enhance the irradiation of the surface of the filament, and whether the filament has light leakage points or not is visually observed. The invention carries out process control on the preparation process of the optical fiber image transmission element through the technical scheme to obtain the optical fiber image transmission element with improved spot defects.
The invention also provides an optical fiber image transmission element prepared by the preparation method, wherein the optical fiber image transmission element is an optical fiber image inverter, an optical fiber light cone or an optical fiber panel.
The spot defect of the optical fiber image-transmitting element is well controlled, and the thickness of the optical fiber image-transmitting element is 1-50 mm, and the spot defect is every 1000mm 2 The number of spots in the effective area of (2) is < 10, and the diameter of each spot is < 60 mu m.
In bookIn one embodiment of the invention, the optical fiber image-transmitting member is prepared according to the above-described process of the present invention, and has a thickness of 1 to 50mm and a diameter of
The number of spots in the effective area is 2-3, and the size of each spot is less than 60 mu m.
In one embodiment of the present invention, an optical fiber image-transmitting member having a thickness of 1 to 50mm and a diameter of 1 to 50mm is prepared according to the above-described process of the present invention
The number of spots in the effective area is 8-10, and the size of each spot is less than 60 μm.
The invention also provides a low-light level night vision device, which comprises the optical fiber image inverter and/or the optical fiber panel; the optical fiber image inverter and/or the optical fiber panel are arranged in an imaging channel of the low-light night vision device.
The features of the invention claimed and/or described in the specification may be combined, and are not limited to the combinations set forth in the claims by the recitations therein. The technical solutions obtained by combining the technical features in the claims and/or the specification also belong to the scope of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. A method for producing an optical fiber image-transmitting member, comprising the steps of post-drawing a combination of a sheath tube and a mandrel to obtain an optical fiber monofilament, post-drawing a combination of the optical fiber monofilament and a primary multifilament bar to obtain a primary multifilament, post-drawing a combination of the primary multifilament and a secondary multifilament bar to obtain a secondary multifilament, and post-arranging the secondary multifilament to be fused by hot pressing, characterized by further comprising the steps of:
1) Before the combination of the leather tube and the core rod, carrying out first cleaning on the leather tube and the core rod; the first cleaning is to wipe, dry and remove floating dust from the leather hose and the core rod by alcohol;
2) Before the optical fiber monofilaments are arranged, carrying out second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol firstly and then carry out ultrasonic cleaning with the alcohol;
3) The optical fiber monofilament, the primary multifilament and the secondary multifilament are all raised end to end, and each filament is separately placed; before the optical fiber monofilaments are arranged, before the primary multifilaments are arranged and before the secondary multifilaments are arranged, a step of picking is arranged; the step of picking comprises: heightening the head and the tail of each filament, separately placing the filaments, and selecting the filaments in a darkroom by lighting detection;
4) The selected acceptable optical fiber monofilaments, primary multifilaments and secondary multifilaments are arranged into a mold one by one.
2. The method according to claim 1, wherein the alcohol concentration in step 1) and step 2) is 99.7-99.9% by volume; the alcohol wiping is performed by dipping alcohol with hundred-grade, thousand-grade or ten-thousand-grade dust-free cloth.
3. The method as claimed in claim 1, wherein the removing of the floating dusts in the step 1) comprises the steps of: firstly, purging the leather hose and the core rod by using a deionized fan; and then, absorbing the floating ash by using dust removing equipment.
4. The preparation method according to claim 1, wherein the ultrasonic cleaning in step 2) is performed under the conditions of an ultrasonic frequency of 28KHz and an ultrasonic power of 12 KW; the time of the ultrasonic treatment is less than or equal to 30s.
5. The method for preparing the silk fibroin according to the claim 1, wherein the step 3) of raising the head and the tail of each silk is to place the silk on a bracket; a plurality of tooth-shaped clamping grooves are formed in the bracket; the separated placement is that the head and the tail of each wire are respectively placed into the tooth-shaped clamping grooves, and only one wire is placed into each tooth-shaped clamping groove.
6. The method according to claim 5, wherein the stent is made of a non-metallic material.
7. The preparation method according to claim 1, wherein the lighting detection and selection in step 3) is to hold the lighting to irradiate one side surface of the filament, turn the filament over, hold the lighting to irradiate the other side surface of the filament, and pick out the filament with light leakage points; the lamp light is 5-15W incandescent lamp.
8. The method of claim 1, wherein the step 4) of arranging the selected qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments one by one into a mold comprises:
before the fiber optic monofilament, primary multifilament and secondary multifilament arrangements, each filament is laid separately;
no glass collision sound is generated at the time of the optical fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement;
after the optical fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement, the lower filaments in contact with the arranged filaments are not vibrated as viewed with an auxiliary viewing screen or a hand-held magnifier.
9. An optical fiber image-transmitting member produced by the production method according to any one of claims 1 to 8, wherein the optical fiber image-transmitting member is a fiber optic inverter, a fiber optic taper, or a fiber optic faceplate; the thickness of the optical fiber image transmission element is 1-50 mm, and each 1000mm 2 The number of spots in the effective area of (a) is < 10, and the diameter of each spot is < 60 μm.
10. A low-light level night vision device comprising the optical fiber image transfer element of claim 9; the optical fiber image transmission element is an optical fiber image inverter and/or an optical fiber panel; the optical fiber image inverter and/or the optical fiber panel are/is arranged in an imaging channel of the low-light night vision device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211101770.6A CN115353283B (en) | 2022-09-09 | 2022-09-09 | Optical fiber image transmission element, preparation method and application thereof |
Applications Claiming Priority (1)
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