CN101419308A - Big section optical fiber image transmission bundle - Google Patents
Big section optical fiber image transmission bundle Download PDFInfo
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- CN101419308A CN101419308A CNA2008102027145A CN200810202714A CN101419308A CN 101419308 A CN101419308 A CN 101419308A CN A2008102027145 A CNA2008102027145 A CN A2008102027145A CN 200810202714 A CN200810202714 A CN 200810202714A CN 101419308 A CN101419308 A CN 101419308A
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Abstract
The invention relates to a large cross-section fiber bundle. Three layers of coaxial optical fiber monofilaments with the same cross-section area and length are arranged into a filament bundle with an orthohexagonal cross section, and the filament bundle is heated and drawn into filament yarns with orthohexagonal cross section; the filament yarns with the same cross-section area, length and orthohexagonal cross section are arranged into a filament yarn bundle with the dodecagonal cross-section, and links of three axes of any three adjacent primary filament yarns in the cross ,section of the secondary filament yarn bundle form an equilateral triangle; the filament yarn bundle is heated and drawn into filament yarns with the dodecagonal cross-section; and the large cross-section fiber bundle is obtained after the filament yarns are dissolved in acid. The prepared large cross-section fiber bundle has the diameter of more than 2.0mm, the pixel of more than 40,000, and the resolution of 40-60 wire pairs/mm, and fills up the blank in the prior art.
Description
Technical field
The present invention relates to a kind of big section optical fiber image transmission bundle.
Background technology
Optical fiber image transmission beam is that two ends are corresponding one by one with the multicomponent glass optical fiber relevant permutation of many certain-lengths set bunchy, a kind of optical module that can images.Compare with the traditional optical imaging system, that optical fiber image transmission beam has is flexible, volume is little, in light weight, radioresistance and advantage such as high temperature resistant.
The flat 8-262242 of Te Open (JP 8262242A) discloses a kind of optical fiber image transmission beam, but the core material diameter of this optical fiber image transmission beam and the ratio of fibre diameter greater than 0.48 less than 0.57, the net sectional area that is converted to core material is a ratio 23.0%～32.5%, makes its effective transmissivity low.
ZL 200510112352.7 has disclosed a kind of optical fiber image transmission beam, and the ratio of the core material net sectional area of this optical fiber image transmission beam is increased to 40%～50%, has improved the effective transmissivity of optical fiber image transmission beam.But the diameter of this optical fiber image transmission beam is less than or equal to 2.0mm (is generally that 0.6mm～2.0mm), pixel is less than 40,000.
Therefore, the optical fiber image transmission beam that how to prepare a kind of heavy in section (diameter of optical fiber image transmission beam is greater than 2.0mm), high pixel (pixel is greater than 40,000) just becomes the technical issues that need to address of the present invention.
Summary of the invention
The objective of the invention is to, the optical fiber image transmission beam of a kind of heavy in section (diameter of optical fiber image transmission beam is greater than 2.0mm), high pixel (pixel is greater than 40,000) is provided.
The said big section optical fiber image transmission bundle of the present invention, it at first is arranged in the cross section by some areas of section three layers of coaxial optical fiber monofilament identical with length is orthohexagonal tow, to be drawn into the cross section be orthohexagonal multifilament in heating again; Then with some areas of section identical with length and the cross section be that orthohexagonal multifilament is arranged in the tow that the cross section is a dodecagon, and making the line in three axle center of any adjacent three multifilament in the secondary multifilament bundled cross section is equilateral triangle, heating is drawn into the multifilament that the cross section is a dodecagon once more, and the gained multifilament gets object after acid is molten;
" diameter " of object greater than 2.0mm, pixel greater than 40,000, resolution is: 40lp/mm～60lp/mm.
Description of drawings
Fig. 1. be said three layers of coaxial optical fiber monofilament schematic cross-section among the present invention;
Wherein: a-axle core radius, b-axle core radius and skin thickness sum, the radius of c-three layer of coaxial optical fiber monofilament.
Fig. 2. be said three layers of coaxial optical fiber monofilament synoptic diagram among the present invention;
Wherein: d-axle core, e-cortex, the molten layer of f-acid.
Fig. 3. be the schematic cross-section of said multifilament through a multifilament gained among the present invention.
Fig. 4. the arrangement mode synoptic diagram when said multifilament through a multifilament gained is at the secondary multifilament among the present invention;
Fig. 5. be the schematic cross-section of big section optical fiber image transmission bundle of the present invention.
Fig. 6. be the synoptic diagram of big section optical fiber image transmission bundle of the present invention;
Wherein: h-hard end face; I-flexible part.
Embodiment
Term defines: among the present invention " diameter " of said big section optical fiber image transmission bundle, be meant the distance between the opposite side facing each other of dodecagon, see D among Fig. 5.
A kind of method for preparing big section optical fiber image transmission bundle of the present invention, it comprises the steps:
(1) preparation of raw material glass bar:
The glass batch [see for details 200510112350.8, (cladding glass that is used for acid soluble method flexible optical fiber image transmitting beam) 200510112351.2 (acid soluble glass that is used for acid soluble method flexible optical fiber image transmitting beam)] that to make optical fiber monofilament cortex e, the molten layer of acid f respectively places crucible, heat fused is to clarification, and being drawn into diameter is the cortex glass bar of 20mm～25mm and the sour molten layer glass bar that diameter is 15mm～20mm.The core material glass of making fibre core d is that commercially available diameter is 25mm～30mm flint optical glass rod.
The preparation of (2) three layers of coaxial optical fiber monofilament:
To join while heat fused in one three set crucible by axle core rod, cortex glass bar and the molten layer of the acid glass bar that step (1) makes, three set crucibles are placed in the electric furnace, the temperature of electric furnace divides upper, middle and lower three Region control, promptly be controlled at 1250 ℃～1300 ℃, 950 ℃～1000 ℃ and 800 ℃～850 ℃ respectively, oral area at three set crucibles is drawn into three layers of coaxial optical fiber monofilament, the diameter that makes monofilament is 1.0mm～1.5mm, and the ratio (a/b) of axle core radius a and axle core radius and skin thickness sum b is 0.70～0.75; The ratio (a/c) of the radius c of axle core radius a and three layers of coaxial optical fiber monofilament is 0.60～0.68.
The effect of cortex e is to make light carry out total reflection in the communication process in axle core d, the molten layer of acid f is a kind of excessive medium, in final products, just be retained in two of coherent fiber bundle, monofilament is bonded together, center section is all dissolved in the molten process of acid, monofilament is separated, and coherent fiber bundle is transformed into flexibility from rigidity.When cortex e is too thin, can not form total reflection, produce light leakage phenomena, coherent fiber bundle just can't be worked; F is too thin when the molten layer of acid, and monofilament is difficult to separate fully in the molten process of acid, and the bending property of coherent fiber bundle is poor, is very easy to produce fracture of wire.Otherwise: when cortex e is too thick, a core d relative scale is descended, reduced the effective light transmission area of coherent fiber bundle; F is too thick when the molten layer of acid, has not only prolonged the sour molten time, and the relative scale of a core d and cortex e is descended, and effective biography light area of coherent fiber bundle reduces, and transmitance descends thereupon.
(3) once row's silk reaches (once) multifilament:
Some three layers of coaxial optical fiber monofilament that made by step (2) are arranged in the cross section in row's silk mould be orthohexagonal tow; Be heated to 850 ℃～900 ℃, be drawn into length and be 450mm～600mm, cross section and be regular hexagon and opposite side distance from, be the multifilament of 1mm～5mm (seeing d among Fig. 4).In the process that draws multifilament, the method that adopts mechanical arm clamping and traction is to prevent producing distortion in the drawing process.
(4) secondary row silk and (secondary) multifilament:
Some multifilament by step (3) preparation are arranged in the tow that the cross section is a dodecagon in row's silk mould, and making in the secondary multifilament bundled cross section arbitrarily the line in three axle center of adjacent three multifilament is that equilateral triangle (is the arrangement that misplaces of adjacent multifilament, to reduce the grid of heavy in section flexible optical fiber image transmitting beam) a multifilament edge, be heated to 850 ℃～900 ℃, being drawn into length is that 700mm～1200mm, " diameter " are the multifilament of 2.1～6.0mm (D).
(5) acid molten (preparation of object):
To adopt seal with wax (in order to avoid being subjected to the erosion of acid solution) by the multifilament two ends that step (4) make, dipping is 4 hours～6 hours in the hydrochloric acid solution of the multifilament immersion 0.01N～0.1N that will hold with sealing with wax, and the multifilament after acid is molten is object again after washing and drying.
The invention provides the optical fiber image transmission beam that a kind of heavy in section (diameter of optical fiber image transmission beam is greater than 2.0mm), high pixel (pixel is greater than 40,000) and resolution reach 40lp/mm～60lp/mm.Filled up blank of the prior art.
The present invention is further elaborated below by embodiment, and its purpose only is better to understand content of the present invention.Therefore, the cited case does not limit protection scope of the present invention.
Embodiment 1
The preparation of raw material glass bar:
Make the glass batch of a core, cortex and the molten layer of acid according to composition requirement, fusing clarification in platinum crucible is drawn into the bar of glass.The diameter of axle core glass bar is 30mm, and the diameter of cortex glass bar is 28mm, and the diameter of the molten layer of acid glass bar is 18mm;
Coaxial three layers of monofilament preparation:
Axle core glass bar, cortex glass bar and the molten layer of acid glass bar are joined while heat fused in one three set crucible, three set crucibles are placed in the electric furnace, the temperature of electric furnace divides upper, middle and lower three Region control, should trizonal temperature be controlled at 1280 ℃, 960 ℃ and 820 ℃ respectively, the oral area that just can draw out from crucible then at three set crucibles is drawn into three layers of coaxial monofilament; Oral area at three set crucibles draws out three layers of coaxial monofilament then, and the diameter of monofilament is 1.5mm;
A multifilament:
Carry out hexagonal array with 721 monofilament that make by said method, 16 on every limit, being arranged in the cross section is that regular hexagon, opposite side distance are from being the filament tow of 42mm.Be drawn into opposite side distance tow is heated to 860 ℃ in an electric furnace after and be (once) multifilament of 4.2mm from (d);
The secondary multifilament:
With 199 (once) multifilament, being arranged in the cross section is that dodecagon, opposite side distance are from being the multifilament bundled of 60mm.Tow is drawn into opposite side distance from being (secondary) multifilament of 5.6mm be heated to 860 ℃ in an electric furnace after;
Acid is molten:
The employing of (secondary) multifilament two ends is sealed with wax, dipping takes out after 4 hours～6 hours in the hydrochloric acid solution of 0.01N～0.1N then, and the rinsing acid solution seals with glue pipe socket after the drying again, just having made diameter (D) is the flexible optical fiber image transmitting beam of 41lp/mm for 5.6mm, 140,000 pixels, resolution.
Embodiment 2
The preparation of raw material glass bar:
Make the glass batch of a core, cortex and the molten layer of acid according to composition requirement, fusing clarification in platinum crucible is drawn into the bar of glass.The diameter of axle core glass bar is 30mm, and the diameter of cortex glass bar is 28mm, and the diameter of the molten layer of acid glass bar is 18mm;
Coaxial three layers of monofilament manufacturing:
Axle core glass bar, cortex glass bar and the molten layer of acid glass bar are joined while heat fused in one three set crucible, three set crucibles are placed in the electric furnace, the temperature of electric furnace divides upper, middle and lower three Region control, should trizonal temperature be controlled at 1280 ℃, 960 ℃ and 800 ℃ respectively, the oral area that just can draw out from crucible then at three set crucibles is drawn into three layers of coaxial monofilament; Oral area at three set crucibles draws out three layers of coaxial monofilament then, and the diameter of monofilament is 1.0mm;
A multifilament manufacturing:
With 271 monofilament hexagonal array, 10 on every limit, being arranged in the cross section is that regular hexagon, opposite side distance are from being the filament tow of 17.2mm.Be drawn into opposite side distance tow is heated to 860 ℃ in an electric furnace after and be (once) multifilament of 1.7mm from (d);
The secondary multifilament is made:
With 199 (once) multifilament, being arranged in the cross section is that dodecagon, opposite side distance are from being the multifilament bundled of 25mm.Tow is drawn into opposite side distance from being the multifilament of 2.5mm be heated to 860 ℃ in an electric furnace after;
Acid is molten:
The multifilament two ends are adopted and are sealed with wax, dipping takes out after 4 hours～6 hours in the hydrochloric acid solution of 0.01N～0.1N then, and the rinsing acid solution seals with glue pipe socket after the drying again, just having made diameter (D) is the flexible optical fiber image transmitting beam of 58lp/mm for 2.5mm, 54,000 pixels, resolution.
Claims (4)
1, a kind of big section optical fiber image transmission bundle, it is characterized in that, it is orthohexagonal tow that said big section optical fiber image transmission bundle at first is arranged in the cross section by some areas of section three layers of coaxial optical fiber monofilament identical with length, and it is orthohexagonal multifilament that heating is drawn into the cross section; And then with some areas of section identical with length and the cross section be that orthohexagonal multifilament is arranged in the tow that the cross section is a dodecagon, and making the line in three axle center of any adjacent three multifilament in the secondary multifilament bundled cross section is equilateral triangle, heating is drawn into the multifilament that the cross section is a dodecagon once more, and the gained multifilament makes after acid is molten;
" diameter " of prepared big section optical fiber image transmission bundle greater than 2.0mm, pixel greater than 40,000, resolution is: 40lp/mm～60lp/mm.
2, big section optical fiber image transmission bundle according to claim 1 is characterized in that, the axle core radius (a) of wherein said three layers of coaxial optical fiber monofilament and the ratio of a core radius and skin thickness sum (b) are 0.70～0.75.
3, big section optical fiber image transmission bundle according to claim 1 is characterized in that, the ratio of the axle core radius (a) of wherein said three layers of coaxial optical fiber monofilament and the radius (c) of three layers of coaxial optical fiber monofilament is 0.60～0.68.
4, big section optical fiber image transmission bundle according to claim 1 is characterized in that wherein the opposite side distance of said orthohexagonal multifilament is 1mm～5mm from (d).
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| CNA2008102027145A CN101419308A (en) | 2008-11-14 | 2008-11-14 | Big section optical fiber image transmission bundle |
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| CNA2008102027145A CN101419308A (en) | 2008-11-14 | 2008-11-14 | Big section optical fiber image transmission bundle |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102520479A (en) * | 2011-12-27 | 2012-06-27 | 南京春辉科技实业有限公司 | Manufacturing method of quartz optical fiber image bundle |
| CN102520478A (en) * | 2011-12-01 | 2012-06-27 | 长春理工大学 | Method for manufacturing optical fibre image transmitting bundle with filament diameter of 3-12 mum by pre-drawing acid-soluble monofilaments |
| CN103951184A (en) * | 2014-04-18 | 2014-07-30 | 南京邮电大学 | Preparation method of large section high resolution fibre optic image transmission bundle |
| CN104181636A (en) * | 2014-08-25 | 2014-12-03 | 江苏师范大学 | Flexible high-resolution infrared chalcogenide glass optical fiber image transmission bundle and manufacturing method |
| CN104238116A (en) * | 2014-09-15 | 2014-12-24 | 中国科学院上海光学精密机械研究所 | Large-visual-field high-resolution photoelectronic imaging system |
| CN106772790A (en) * | 2016-12-09 | 2017-05-31 | 长飞光纤光缆股份有限公司 | A kind of high efficiency upper thread upconversion fiber passes the preparation method of light beam |
| CN108663747A (en) * | 2018-04-25 | 2018-10-16 | 中国建筑材料科学研究总院有限公司 | Fibre faceplate and preparation method thereof |
| CN111190251A (en) * | 2020-02-25 | 2020-05-22 | 南京春辉科技实业有限公司 | Method for manufacturing large-section high-resolution flexible optical fiber image transmission bundle |
| CN112327406A (en) * | 2020-12-04 | 2021-02-05 | 苏州德睿电力科技有限公司 | High-filling-rate flexible optical fiber image transmission bundle, mold and image transmission bundle preparation method |
| CN112960901A (en) * | 2021-02-03 | 2021-06-15 | 中国建筑材料科学研究总院有限公司 | Flexible optical fiber image transmission bundle and preparation method and application thereof |
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2008
- 2008-11-14 CN CNA2008102027145A patent/CN101419308A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520478A (en) * | 2011-12-01 | 2012-06-27 | 长春理工大学 | Method for manufacturing optical fibre image transmitting bundle with filament diameter of 3-12 mum by pre-drawing acid-soluble monofilaments |
| CN102520479B (en) * | 2011-12-27 | 2014-09-10 | 南京春辉科技实业有限公司 | Manufacturing method of quartz optical fiber image bundle |
| CN102520479A (en) * | 2011-12-27 | 2012-06-27 | 南京春辉科技实业有限公司 | Manufacturing method of quartz optical fiber image bundle |
| CN103951184A (en) * | 2014-04-18 | 2014-07-30 | 南京邮电大学 | Preparation method of large section high resolution fibre optic image transmission bundle |
| CN104181636B (en) * | 2014-08-25 | 2017-06-06 | 江苏师范大学 | The flexible infrared chalcogenide glass fiber coherent fiber bundle of high-resolution and preparation method |
| CN104181636A (en) * | 2014-08-25 | 2014-12-03 | 江苏师范大学 | Flexible high-resolution infrared chalcogenide glass optical fiber image transmission bundle and manufacturing method |
| CN104238116A (en) * | 2014-09-15 | 2014-12-24 | 中国科学院上海光学精密机械研究所 | Large-visual-field high-resolution photoelectronic imaging system |
| CN106772790A (en) * | 2016-12-09 | 2017-05-31 | 长飞光纤光缆股份有限公司 | A kind of high efficiency upper thread upconversion fiber passes the preparation method of light beam |
| CN108663747A (en) * | 2018-04-25 | 2018-10-16 | 中国建筑材料科学研究总院有限公司 | Fibre faceplate and preparation method thereof |
| CN111190251A (en) * | 2020-02-25 | 2020-05-22 | 南京春辉科技实业有限公司 | Method for manufacturing large-section high-resolution flexible optical fiber image transmission bundle |
| CN111190251B (en) * | 2020-02-25 | 2022-02-25 | 南京春辉科技实业有限公司 | Method for manufacturing large-section high-resolution flexible optical fiber image transmission bundle |
| CN112327406A (en) * | 2020-12-04 | 2021-02-05 | 苏州德睿电力科技有限公司 | High-filling-rate flexible optical fiber image transmission bundle, mold and image transmission bundle preparation method |
| CN112960901A (en) * | 2021-02-03 | 2021-06-15 | 中国建筑材料科学研究总院有限公司 | Flexible optical fiber image transmission bundle and preparation method and application thereof |
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Open date: 20090429 |