CN115353283B - Optical fiber image transmission element, preparation method and application thereof - Google Patents
Optical fiber image transmission element, preparation method and application thereof Download PDFInfo
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- CN115353283B CN115353283B CN202211101770.6A CN202211101770A CN115353283B CN 115353283 B CN115353283 B CN 115353283B CN 202211101770 A CN202211101770 A CN 202211101770A CN 115353283 B CN115353283 B CN 115353283B
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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
-
- 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 Life Sciences & Earth Sciences (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- 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, a preparation method and application thereof. The method comprises the following steps: 1) Before the leather hose and the core rod are combined, the leather hose and the core rod are subjected to first cleaning; the first cleaning is to wipe the leather tube and the core rod with alcohol, dry and remove floating dust; 2) Before the optical fiber monofilaments are arranged, performing second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol first and then perform ultrasonic cleaning with alcohol; 3) The method comprises the steps of arranging optical fiber monofilaments, arranging primary multifilaments and arranging secondary multifilaments; the yarn picking step comprises the following steps: and (5) heightening the head and the tail of each wire, putting the wires separately, and detecting and selecting the wires in a darkroom under illumination. The technical problem to be solved is how to effectively control the spot quantity and spot size in the optical fiber image transmission element, so that the thickness of the optical fiber image transmission element is 1-50 mm per 1000mm 2 The number of spots is < 10, and the diameter of each spot is < 60 μm.
Description
Technical Field
The invention belongs to the technical field of optical fiber manufacturing, and particularly relates to an optical fiber image transmission element, a preparation method and application thereof.
Background
With the gradual development of low-light night vision, the requirements of core indexes of low-light 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, wherein the requirements of the required comprehensive performance of the hard optical fiber image transmission element, including image transmission, are also improved. The speckles in the optical fiber image sensor are one of the most important factors for limiting the performance index. Speckle is a defect inside the fiber optic inverter that is a continuous fiber optic filament with a diffuse transmission of less than 70% over 24 um. The optical fiber does not transfer an image at the position where the spot exists, and thus it is desirable that the spot defect inside the optical fiber inverter is as small as possible and the spot size is as small as possible.
The general production process in the prior art comprises the steps of drawing an optical fiber monofilament after combining a leather tube and a mandrel, arranging the optical fiber monofilament into a primary multifilament rod, drawing the primary multifilament rod, arranging the primary multifilament rod into a secondary multifilament rod, drawing the secondary multifilament rod, and carrying out hot-press fusion on the secondary multifilament rod. Before the combination of the leather tube and the core rod is drawn to obtain the optical fiber monofilament, the rod tube is firstly cleaned by purified water in an ultrasonic way; after the rod tube is drawn to obtain an optical fiber monofilament, wiping the optical fiber monofilament with purified water, and arranging the optical fiber monofilament into a primary composite rod after airing; in the drawing and rod arranging processes, the optical fiber monofilaments and the primary multifilament are tightly placed on a stainless steel tray for turnover; the filament picking before the bar arrangement is to arrange the filaments layer by layer, and the filaments are selected by naked eyes under sunlight or lamplight.
Although the production process of the prior art carries out a plurality of fine operations such as cleaning, filament picking and the like, more spots still exist in the optical fiber image transmission element prepared by the method of the prior art, for example, the number of spots in the effective area of the optical fiber image transmission element with the diameter of 42mm reaches about 20; and the size of each spot is larger, and the size of each single spot reaches 90 μm 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 problems of effectively controlling the number and the size of spots in the optical fiber image transmission element so that the thickness of the optical fiber image transmission element is 1-50 mm per 1000mm 2 The number of spots in the effective area of (a) is less than 10, and the diameter of each spot is less than 60 mu m, so that the method is more practical.
The aim and the technical problems of the invention are realized by adopting the following technical proposal. 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 leather tube and a mandrel are combined, drawing a primary multifilament after the optical fiber monofilament is arranged into a primary multifilament rod, drawing a secondary multifilament after the primary multifilament is arranged into a secondary multifilament rod, and carrying out hot-press fusion after the secondary multifilament is arranged, and further comprises the following steps of:
1) Before the leather hose and the core rod are combined, the leather hose and the core rod are subjected to first cleaning; the first cleaning is to wipe the leather tube and the core rod with alcohol, dry and remove floating dust;
2) Before the optical fiber monofilaments are arranged, performing second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol first and then perform ultrasonic cleaning with alcohol;
3) The head and the tail of the optical fiber monofilament, the primary multifilament and the secondary multifilament are heightened, and each filament is placed separately; providing a filament picking step prior to said optical fiber monofilament arrangement, prior to said primary multifilament arrangement, and prior to said secondary multifilament arrangement; the yarn picking step comprises the following steps: raising the head and tail of each wire, putting separately, and detecting and selecting in a darkroom under illumination;
4) The selected qualified optical fiber filaments, primary multifilaments and secondary multifilaments are individually arranged into a mold.
The aim and the technical problems of the invention can be further realized by adopting the following technical measures.
Preferably, the aforementioned preparation method, wherein the volume concentration of the alcohol in step 1) and step 2) is 99.7% -99.9%; the alcohol wiping is to dip alcohol with hundred-grade, thousand-grade or ten-thousand-grade dust-free cloth and then wipe.
Preferably, the foregoing preparation method, wherein the removing the floating dust in the step 1) includes the following steps: firstly, purging the leather hose and the core rod by using a deionization fan; and sucking the floating ash by using dust removing equipment.
Preferably, the preparation method comprises the step 2), wherein the 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.
Preferably, the preparation method comprises the step 3), wherein the head and tail of each wire are raised, and the wires are placed on a bracket; a plurality of tooth-shaped clamping grooves are formed in the support; the separate placement is that the head part and the tail part of each wire are respectively placed in the tooth-shaped clamping grooves, and only one wire is placed in each tooth-shaped clamping groove.
Preferably, in the foregoing preparation method, the material of the bracket is a non-metal material.
Preferably, in the foregoing preparation method, in step 3), the detecting and selecting of the illumination is to irradiate one side surface of the filament with hand-held light, turn the filament over, irradiate the other side surface of the filament with hand-held light, and pick out the filament with a light leakage point; the lamplight is an incandescent lamp with the weight of 5-15W.
Preferably, the aforementioned preparation method, wherein step 4) arranging the selected qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments one by one into a mold comprises:
each filament is uniformly laid out prior to the fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement;
no glass collision sound is emitted at the time of the 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 filaments below in contact with the arranged filaments do not vibrate when viewed with an auxiliary viewing screen or a hand held magnifying glass.
The aim of the invention and the technical problems are also achieved by adopting the following technical proposal. According to the optical fiber image transmission element prepared by the preparation method provided by the invention, 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 advantages that the number of spots in the effective area of each 1000mm < 2 > is less than 10, and the diameter of each spot is less than 60 mu m.
The aim of the invention and the technical problems are also achieved by adopting the following technical proposal. The low-light night vision device provided by the invention comprises the optical fiber image transmission 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/is 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 have at least the following advantages:
the invention provides an optical fiber image transmission element, a preparation method and application thereof, which controls impurities on one handThe method comprises the steps of introducing quality dust, namely firstly, carrying out first cleaning on a leather hose and a core rod before combining the leather hose and the core rod; the first cleaning is to wipe the leather tube and the core rod with alcohol, dry and remove floating dust; secondly, before the optical fiber monofilaments are arranged, performing second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol firstly and then perform ultrasonic cleaning with alcohol; the invention cleans by alcohol instead of purified water, mainly because air holes and dark spots are generated for avoiding water residues; finally, the optical fiber monofilaments, the primary multifilaments and the secondary multifilaments are stacked in a head-to-tail heightened mode, so that static electricity is generated on the surfaces of the fibers due to contact of the fibers with a table surface or a metal tray, and dust adhesion is caused; the introduction of impurity dust is controlled by the application of the technical means; on the other hand, friction and collision between the wires are controlled to avoid or reduce breakage of the wires, firstly, each wire of the optical fiber monofilament, the primary multifilament and the secondary multifilament is uniformly placed, and friction and collision between the wires are reduced as much as possible; secondly, arranging the selected qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments into a mould one by one, wherein each filament is arranged one by one in the arrangement, so that friction and collision among the filaments are avoided, the arrangement is that the filaments are required to be taken and put lightly, and damage caused by friction and collision among the filaments is reduced as much as possible; the breakage of the wires is avoided and reduced by the application of the technical means; finally, the steps of picking the filaments in the darkroom are arranged in links of the optical fiber monofilaments, the primary multifilaments and the secondary multifilaments, and an operator holds the light to strengthen the irradiation of the surface of the filaments, so that whether the filaments have light leakage points or not is visually detected; and then turning the wire 180 degrees, and then holding the light to strengthen the irradiation of the surface of the wire, and visually inspecting whether the wire has a light leakage point. According to the technical scheme, through the comprehensive application of the technical means, the preparation process of the optical fiber image transmission element is precisely controlled, so that the optical fiber image transmission element with improved spot defects is obtained, and the quality of the optical fiber image transmission element is greatly improved. 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 of (a) is less than 10; and, in addition, the method comprises the steps of,the size of the spots is small, and the diameter of each spot is less than 60 mu m.
The foregoing description is only an overview of the present invention, and is intended to provide a more thorough understanding of the present invention, and is to be accorded the full scope of the present invention.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention to achieve the preset purpose, the following description will make a detailed description of an optical fiber image transmission element, its preparation method, its application, its specific implementation, structure, characteristics and effects according to the present invention in conjunction with the preferred embodiments.
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 leather tube and a mandrel are combined, drawing a primary multifilament after the optical fiber monofilament is arranged into a primary multifilament rod, drawing a secondary multifilament after the primary multifilament is arranged into a secondary multifilament rod, and carrying out hot-press fusion after the secondary multifilament is arranged, wherein the steps are not different from the steps in the prior art, and the important description is not carried out in the patent.
The invention provides a preparation method of an optical fiber image transmission element, which mainly comprises the following steps:
firstly, before the leather hose and the core rod are combined, the leather hose and the core rod are cleaned for the first time; the first cleaning is to wipe the leather tube and the core rod with alcohol, dry and remove floating dust; in this washing step, the volume concentration of alcohol used is 99.7% -99.9%; the alcohol wiping is to dip alcohol with hundred-grade, thousand-grade or ten-thousand-grade dust-free cloth and then wipe; because of the volatility of alcohol, the airing is natural airing; the removing of the floating dust comprises: firstly, purging the leather hose and the core rod by using a deionization fan; sucking floating ash by using dust removing equipment; the technical purpose of the deionization fan is to sweep the leather tube and the core rod to eliminate or reduce static electricity on the surfaces of the leather tube and the core rod, so that dust adhered to the surfaces of the leather tube and the core rod is loosened, and then the purification and dust removal equipment is adopted to adsorb floating ash, so that the leather tube and the core rod are cleaned, and the risk and probability of introducing impurity dust into the optical fiber are reduced.
Secondly, before the optical fiber monofilaments are arranged, performing second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol firstly and then perform ultrasonic cleaning with alcohol; in this washing step, the volume concentration of alcohol used is 99.7% -99.9%; the alcohol wiping is to dip alcohol with hundred-grade, thousand-grade or ten-thousand-grade dust-free cloth and then wipe; 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 to shake down impurities on a glass rod and a glass tube through ultrasonic waves, and the glass is impacted by a vacuum nuclear bubble group to thoroughly clean the surface of glass fiber; the time of the ultrasonic is not too long to avoid that the impact of the ultrasonic vibration may cause breakage of the optical fiber monofilament to adversely affect the spot defect.
Preferably, in order to further avoid and reduce the introduction of impurity dust, the step of ultrasonic cleaning with alcohol can also be provided in the link of the primary multifilament and the secondary multifilament; however, since the primary multifilament and the secondary multifilament are finer, the time of ultrasonic treatment is not longer than 20s to avoid breakage and breakage of the filaments.
The repeated steps are to raise the head and tail of the fiber during the storage and circulation of the fiber monofilament, the primary multifilament and the secondary multifilament, so as to avoid the adverse effect of the fiber image transmission element on spot defect caused by the adhesion of dust and impurity introduced into the fiber image transmission element due to static electricity generated by contact with the table board or the stainless steel tray. During the storage and circulation of the optical fiber monofilaments, primary multifilaments and secondary multifilaments, each filament is required to be placed separately so as to avoid the adverse effect on the spot defect caused by the breakage of the filaments due to the contact and friction between the filaments. The fiber monofilaments, the primary multifilaments and the secondary multifilaments are raised in head and tail, and the filaments are placed on a bracket separately; the rack is provided with a plurality of tooth-shaped clamping grooves; the separate placement is that the head part and the tail part of each wire are respectively placed in the tooth-shaped clamping grooves, and only one wire is placed in each tooth-shaped clamping groove. The bracket can simultaneously realize head and tail heightening and separate placement of the wires, so that dust adhering to the surfaces of the wires due to static electricity can be reduced, and damage caused by friction collision of the wires can be avoided; furthermore, in order to better avoid and reduce static electricity, the bracket in the technical scheme of the invention is made of non-metal materials, and can be made of plastics or rubber, such as polytetrafluoroethylene bracket.
Providing a filament picking step prior to said optical fiber monofilament arrangement, prior to said primary multifilament arrangement, and prior to said secondary multifilament arrangement; the yarn picking step comprises the following steps: raising the head and tail of each wire, putting separately, and detecting and selecting in a darkroom under illumination; the illumination detection and selection is that in a darkroom, an operator holds the lamplight to strengthen one side surface of the illumination wire so as to check whether a light leakage point exists on the surface of the wire; if the light leakage point exists, the root silk is used as waste silk to be wasted; then, the wire is turned over by 180 degrees manually, and the other side surface of the wire is reinforced and irradiated by holding light to check whether the surface of the wire has a light leakage point or not, and the wire with the light leakage point is picked out and discarded. Preferably, the lamplight is an incandescent lamp with the weight of 5-15W; if the light power is too high, for example, the light is 20W or more, the finding of the avoidance point is not facilitated due to dazzling light in the filament picking; however, when the lamp light power is too low, for example, 3W, the luminous spot cannot be easily recognized due to insufficient illuminance, and the luminous spot is easily omitted.
Finally, arranging the selected qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments into a mould one by one; in the arrangement process of the wires, the wires are required to be held and put lightly, so that the phenomenon that the wires are collided and dead is avoided due to poor force grasping, and the spot defect of the optical fiber image transmission element is adversely affected is avoided. Before the fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement, each filament is separately arranged, so that the filaments are prevented from being contacted with each other to generate friction and collision; no glass collision sound is emitted at the time of the fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement; after the fiber monofilament arrangement, primary multifilament arrangement and secondary multifilament arrangement, an auxiliary viewing screen or hand held magnifying glass may be used to view, requiring that each filament has no effect on the filaments below it and on the filaments next to it when placed in the mould. Once vibration is observed in the wire below it and in the wire beside it, the wire needs to be replaced together with the affected wire to avoid the occurrence of speckle defects.
According to the technical scheme, the reasons for the occurrence of the spot defects are subdivided, and various targeted technical means are adopted to overcome the reasons for the occurrence of the spot defects, so that the control of the spot defects in the optical fiber element is realized.
According to the technical scheme of the invention, on one hand, the introduction of impurity dust and the like is controlled, and the damage of the wires caused by friction and collision between the wires is avoided, and on the other hand, the 360-degree detection and selection of the light in a darkroom are carried out, so that the defects of light leakage points caused by the uncontrolled impurities, damage and the like in the previous link are selected and removed as waste wires, the quality of the optical fiber image transmission element is greatly improved, and the optical fiber image transmission element prepared by the technical scheme of the invention has the advantages that the number of spots is small, and in the optical fiber image transmission element with the thickness of 1-50 mm, the optical fiber image transmission element is 1000mm 2 The number of spots in the effective area of (a) 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, the introduction control of impurity dust and the like is that the leather hose and the core rod are subjected to first cleaning before being combined; the first cleaning is to wipe the leather tube and the core rod with alcohol, dry and remove floating dust; secondly, before the optical fiber monofilaments are arranged, performing second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol firstly and then perform ultrasonic cleaning with alcohol; the invention cleans by alcohol instead of purified water, mainly because air holes and dark spots are generated for avoiding water residues; thirdly, the optical fiber monofilaments, the primary multifilaments and the secondary multifilaments are stacked in a head-to-tail mode, so that static electricity is generated on the surfaces of the fibers due to the fact that the fibers are contacted with a table board or a metal tray, and dust is adhered to the fibers. In the technical scheme of the invention, the damage of the wires caused by the friction and collision among the wires is controlled by putting each wire of the optical fiber monofilament, the primary multifilament and the secondary multifilament separately, so that the friction and collision among the wires are reduced; secondly, arranging the selected qualified optical fiber monofilaments, the primary multifilaments and the secondary multifilaments into a mould one by one, wherein each filament is arranged one by one in the arrangement, so that friction and collision among the filaments are avoided, the arrangement is that the filaments are required to be held and put lightly, and damage caused by friction and collision among the filaments is reduced as much as possible. In the technical scheme, for filament picking, the filament picking is carried out in a darkroom, so that the influence of environmental factors on the filament picking is avoided; meanwhile, when the wires are picked, the wires are separately placed on a bracket, an operator holds the light to strengthen the irradiation of the surfaces of the wires, and whether the wires have light leakage points is visually detected; and then turning the wire 180 degrees, and then holding the light to strengthen the irradiation of the surface of the wire, and visually inspecting whether the wire has a light leakage point. According to the technical scheme, the process control is carried out on the preparation process of the optical fiber image transmission element, so that the optical fiber image transmission element with improved spot defects is obtained.
The invention also provides an optical fiber image-transmitting element prepared according to the preparation method, wherein the optical fiber image-transmitting 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 transmission element is well controlled, and the thickness of the optical fiber image transmission element is 1-50 mm, every 1000mm 2 The number of spots is < 10, and the diameter of each spot is < 60 μm.
In one embodiment of the present invention, the optical fiber image-transmitting element is prepared according to the above-mentioned process of the present invention, and has a thickness of 1-50 mm and a diameter ofThe 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, the optical fiber image-transmitting element is prepared according to the above-mentioned process of the present invention, and has a thickness of 1-50 mm and a diameter ofThe number of spots in the effective area is 8-10, and the size of each spot is less than 60 mu m.
The invention also provides a low-light 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/is arranged in an imaging channel of the low-light night vision device.
The technical features of the claims and/or the description of the present invention may be combined in a manner not limited to the combination of the claims by the relation of reference. The technical scheme obtained by combining the technical features in the claims and/or the specification is also the protection scope of the invention.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, but any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (9)
1. A method for producing an optical fiber image transmission element, which comprises the steps of drawing an optical fiber monofilament after a combination of a sheath tube and a core rod, drawing a primary multifilament after arranging the optical fiber monofilament into a primary multifilament rod, drawing a secondary multifilament after arranging the primary multifilament into a secondary multifilament rod, and hot-press fusion after arranging the secondary multifilament, and is characterized by further comprising the steps of:
1) Before the leather hose and the core rod are combined, the leather hose and the core rod are subjected to first cleaning; the first cleaning is to wipe the leather tube and the core rod with alcohol, dry and remove floating dust;
2) Before the optical fiber monofilaments are arranged, performing second cleaning on the optical fiber monofilaments, wherein the second cleaning is to wipe the optical fiber monofilaments with alcohol firstly and then perform ultrasonic cleaning with alcohol, and the ultrasonic cleaning is to perform ultrasonic 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;
3) The head and the tail of the optical fiber monofilament, the primary multifilament and the secondary multifilament are heightened, and each filament is placed separately; providing a filament picking step prior to said optical fiber monofilament arrangement, prior to said primary multifilament arrangement, and prior to said secondary multifilament arrangement; the yarn picking step comprises the following steps: raising the head and tail of each wire, putting separately, and detecting and selecting in a darkroom under illumination;
4) The selected qualified optical fiber filaments, primary multifilaments and secondary multifilaments are individually arranged into a mold.
2. The method according to claim 1, wherein the alcohol concentration by volume of step 1) and step 2) is 99.7% -99.9%; the alcohol wiping is to dip alcohol with hundred-grade, thousand-grade or ten-thousand-grade dust-free cloth and then wipe.
3. The method of claim 1, wherein the removing the floating dust in step 1) comprises the steps of: firstly, purging the leather hose and the core rod by using a deionization fan; and sucking the floating ash by using dust removing equipment.
4. The method of claim 1, wherein step 3) elevating the head and tail of each wire is placing the wire on a rack; a plurality of tooth-shaped clamping grooves are formed in the support; the separate placement is that the head part and the tail part of each wire are respectively placed in the tooth-shaped clamping grooves, and only one wire is placed in each tooth-shaped clamping groove.
5. The method according to claim 4, wherein the material of the bracket is a nonmetallic material.
6. The method according to claim 1, wherein in the step 3) the illumination detection selection is to hold one side surface of the light irradiation wire, turn the wire over, hold the other side surface of the light irradiation wire again, and pick out the wire with the light leakage point; the lamplight is an incandescent lamp with the weight of 5-15W.
7. The method of claim 1, wherein step 4) of arranging the selected qualified optical fiber filaments, primary multifilaments and secondary multifilaments one by one into a mold comprises:
each filament is uniformly laid out prior to the fiber monofilament arrangement, the primary multifilament arrangement and the secondary multifilament arrangement;
no glass collision sound is emitted at the time of the 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 filaments below in contact with the arranged filaments do not vibrate when viewed with an auxiliary viewing screen or a hand held magnifying glass.
8. An optical fiber image transmission element prepared according to the preparation method of any one of claims 1 to 7, wherein the optical fiber image transmission element is an optical fiber image inverter, an optical fiber light cone or an optical fiber panel; the thickness of the optical fiber image transmission element is 1-50 mm, and each 1000mm 2 The number of spots is < 10, and the diameter of each spot is < 60 μm.
9. A low-light night vision device, characterized in that it comprises the optical fiber image-transmitting element according to claim 8; 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.
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| CN202211101770.6A CN115353283B (en) | 2022-09-09 | 2022-09-09 | Optical fiber image transmission element, preparation method and application thereof |
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| CN202211101770.6A CN115353283B (en) | 2022-09-09 | 2022-09-09 | Optical fiber image transmission element, preparation method and application thereof |
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Citations (9)
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