CN101788471B - System and method for automatically measuring optical fiber preform - Google Patents
System and method for automatically measuring optical fiber preform Download PDFInfo
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- CN101788471B CN101788471B CN2010101072598A CN201010107259A CN101788471B CN 101788471 B CN101788471 B CN 101788471B CN 2010101072598 A CN2010101072598 A CN 2010101072598A CN 201010107259 A CN201010107259 A CN 201010107259A CN 101788471 B CN101788471 B CN 101788471B
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Abstract
The invention relates to the technical improvement of optical fiber preforms production, in particluar to a system and a method for automatically measuring an optical fiber preform. The system consists of an automatic rod-pushing device, an automatic matched oil charging and discharging device and an preform tester, wherein the automatic rod-pushing device comprises a testboard, a carriage, a servo motor and a pushing arm, a guide rail is arranged on the testboard, the carriage and the tester are fixed on the guide rail, the carriage can slide along the guide rail, the upper part of the testboard is provided with a pushing arm track through a support, the servo motor is arranged in the pushing arm track and is connected with the pushing arm which is hinged with a push rod, the push rod is provided with a push rod head which moves forward and props against one end of the preform, the carriage is provided with a rolling shaft arranged on a central shaft, and the central shaft is fixed at the vertical axis of the carriage; and the automatic matched oil charging and discharging device comprises a measuring cavity, a lifting screw, a scaleplate, a motor and a matched oil bottle, and the measuring cavity is arranged in the preform tester.
Description
Technical field
What a kind of preform automatic measurement system of the present invention and measuring method thereof related to is the transformation of preform production technology, more precisely, the present invention relates to a kind of system and method for testing thereof of automatic measuring optical fiber prefabricated rods.
Background technology
In the production of current preform, need measure prefabricated rod mandrel, refractive index profile distributes to obtain accurately, is used for operation feedback and surrounding layer design.Measure such prefabricated rod mandrel and belong to the part that prefabricated rods is measured, mainly measure at present by manual method.
Operating personnel insert optical fiber prefabricated rod mandrel to be measured in the test chamber, determine the tested point position.Extruding coupling oil bottle will mate oil pressure and go in the test cabinet, keep coupling oil to be full of test cabinet.Open testing tool, read the value of this test point.Allow coupling oil flow back to oil bottle then, carry out the test of next point.According to the method, in test, need a large amount of hand labours, especially when needs are tested than multiple spot, labour intensity is increased, and increase the manufacturing cost of preform.In addition, when test point increases, because the test instability that human factor causes also can increase.
Summary of the invention
The objective of the invention is provides a kind of preform automatic measurement system and measuring method thereof at above-mentioned weak point.The present invention will realize the robotization that preform is measured, and to reduce the required time of test, provide preform production process feedback faster, reduce the people for makeing mistakes probability and better operation of repeatability is provided.
A kind of preform Auto-Test System of the present invention and method of testing thereof are achieved through the following technical solutions:
A kind of preform Auto-Test System charges and discharge device and the prefabricated rods tester is formed automatically by automatic push rod device, coupling oil.Automatically the push rod device, coupling oil charges and discharge device automatically and the prefabricated rods tester is connected into the computer PC control system by Programmable Logic Controller PLC, the PC control system is according to the program of setting, each device operation of control realizes that preform tests automatically.The prefabricated rods tester can adopt commercially available P104 preform tester.
Automatically the push rod device comprises test board, bracing frame, servomotor and push arm.Guide rail is housed on the test board, bracing frame and tester are housed on the guide rail, bracing frame can slide along guide rail.The push arm track is equipped with by support in test board top, and servomotor is contained in the push arm track.Servomotor connects push arm, and push arm and push rod are hinged, and push rod is equipped with push rod cup, and push rod cup withstands prefabricated rods one end and advances.
Bracing frame has roller bearing, and roller bearing is contained on the central shaft, and central shaft is fixed on the bracing frame longitudinal axis, and roller surface adopts bigger rubber or the resin material of elasticity coefficient.During test, prefabricated rods is put on the roller bearing, and roller bearing moves with rod and rolls.On the bracing frame longitudinal axis height adjustment knob is housed, can regulates the roller bearing height.The front and back position adjusting knob is housed on the central shaft, can regulates the roller bearing front and back position.
The automatic push rod device of preform Auto-Test System comprises a push arm.Push arm promotes prefabricated rods and advances with certain speed in test process.Push arm links to each other with servomotor, and servomotor is installed in the push arm track, and push arm moves in the scope of track.The length of track is determined that by prefabricated rods length to be measured if the length of prefabricated rods is 1500mm, track should be located at about 1300mm.Push arm and push rod are hinged, and push rod is equipped with push rod cup, under the non-test mode, turns up push rod, make things convenient for the prefabricated rods loading and unloading.Push rod cup withstands the prefabricated rods termination and pushes ahead, and push rod cup adopts bigger rubber or the resin material of elasticity coefficient.
Automatically fill the oily device of row's coupling and comprise test chamber, lifting screw, scale, motor and coupling oil bottle, test chamber is arranged in the prefabricated rods tester, automatically fill the difference in height of the oily device of row's coupling, under action of gravity, realize charging into and discharging of coupling oil by coupling oil in coupling oil level and the test chamber in the control coupling oil bottle.
Described motor is fixed on the test board, connects lifting screw, drives lifting screw and rises and descend.The coupling oil bottle is fixed on the lifting screw, the lifting along with the lifting of lifting screw of coupling oil bottle.One pointer is arranged on the lifting screw, and the pointed scale is provided with lifting position by the reading of pointer on scale in the test process.
Described coupling oil bottle mouth is downward, and bottleneck connects an oil pipeline, and the oil pipeline other end is connected with test cabinet.When liquid level was lower than in the test chamber liquid level in the coupling oil bottle, coupling oil flowed to the coupling oil bottle, otherwise then flows to test chamber.Oil pipeline is unsuitable long, and loose connection oil bottle of energy and test chamber get final product, and pipeline material should select for use oil-soluble little, the transparent pipeline that resistance to aging is strong.One level indicator is arranged on the test chamber, show that meter one end is communicated with atmosphere, the other end is communicated with the test chamber upper end.Showing on the meter has inductor, judges when oil-filled whether measure the chamber is full of coupling oil, and discharges bubble.
The present invention is with automatic rod feeder, and coupling oil fills arranging device and tester interlock automatically.Automatically fill-drain syctem is respectively by PLC control automatically for push rod device and coupling oil, and this two-way PLC can merge mutually in central control system and tester data acquisition system (DAS) and reads.So just can test according to the technological requirement setting program.
A kind of measuring method of preform automatic measurement system is as follows:
Test beginning is packed preform one end in the test chamber into, is pushed into initial point position; Put down push rod 1, make push rod cup withstand preform; Set test point quantity and distance, operation test macro program; The coupling oil bottle with speed V2 by B point rise to the A point afterwards speed change be V1, stop after rising to the C point by the A point; Coupling oil flows into test chamber automatically, and after test chamber was full of, coupling oil flow to liquid level gauge, and after inductor was sensed coupling oil on the liquid level gauge, the coupling oil bottle was with speed V
1Drop to a D; After arriving the D point, system enters the tester running status, measures and the read test result; After reading the result, the coupling oil bottle drops to the B point with V3 speed to be stopped; Next servomotor promotes prefabricated rods with speed V4, stops to setpoint distance, carries out the test of next one point, until end of test (EOT).
A kind of preform automatic test approach that the present invention relates to also comprise preform position adjustments,
Automatically send the setting of the speed setting and the coupling oil tank rising or falling speed of rod.
The preform position adjustments is to realize by regulating bracing frame, bracing frame is installed in the tester both sides, determine its position according to the length of preform, if preform length is 1500mm, the distance in supported on both sides frame distance test chamber is generally 700mm, in the dress rod motion, by regulating height adjustment knob, the bottom surface that the roller bearing at assurance two ends and the prefabricated rods in the test chamber are imported and exported guarantees preform level in the test at sustained height.By the front and back position of front and back position adjusting knob adjusting roller bearing, the outermost and the prefabricated rods in the test chamber of assurance both sides roller bearing are imported and exported the outside on same straight line, guarantee that the preform fore-and-aft direction is parallel with test chamber.
Automatically send the speed of rod to control moving of prefabricated rods by control push arm pace and stop, pace V4 can be controlled in 0-20mm/s, and velocity error is controlled at ± 0.2mm/s; Pace V4 preferably is controlled at 10mm/s-15mm/s, and velocity error is controlled at ± 0.12mm/s.In the example, speed is 13mm/s, and velocity error is ± 0.1mm/s that displacement error is ± 0.02mm.
When test, accurate for guaranteeing the result who records, must guarantee that coupling oil is full of test chamber fully, and not have bubble to exist, the speed that this needs accurately control coupling oil to charge into.If the speed that charges into is excessive, can cause occurring bubble in the test cabinet, and be difficult to get rid of, make test result inaccurate.If speed is too small, can influence test speed again, reduce testing efficiency.So, need accurately to set coupling oil bottle 15 rising or falling speeds.
In setting coupling oil bottle rising or falling speed process, there are three height and positions to need to set.Point A, coupling oil begins to flow to the height and position of test chamber; Point B, the height and position that coupling oil is discharged from test chamber fully; Point C, the height and position that coupling oil can just overflow from liquid level gauge; Point D, coupling oil can be full of the height and position of test chamber fully.In coupling oil bottle uphill process, A → C stage, speed V1 generally adopt between 0.5mm/s-and the 1.5mm/s, and velocity error is ± 0.1mm/s; Be preferably disposed between the 0.8mm/s-1.2mm/s, error is ± 0.05mm/s.In practical operation, with speed 0.9mm/s, error is measured for ± 0.03mm/s, measures five observations, does not all contain bubble in the test chamber.B → A uphill process speed V2, C → B decline process speed V3, speed V2 and speed V3 adopt 1.5mm/s.Point B, some C also are simultaneously spacing up and down.
A kind of preform automatic measurement system is reasonable in design, compact conformation, adopt automatic measurement system of the present invention to come the measuring optical fiber prefabricated rods, can realize the robotization that preform is measured, to reduce the required time of test, preform production process feedback is provided faster, reduces the people for makeing mistakes probability and better operation of repeatability is provided.
Description of drawings
The invention will be further described below with reference to accompanying drawing:
Fig. 1 is a kind of synoptic diagram of preform Auto-Test System.
Fig. 2 is a kind of bracing frame synoptic diagram of preform Auto-Test System.
Embodiment
With reference to accompanying drawing 1～2, a kind of preform Auto-Test System charges and discharge device and the prefabricated rods tester is formed automatically by automatic push rod device, coupling oil.Automatically the push rod device, coupling oil charges and discharge device automatically and the prefabricated rods tester is connected into the computer PC control system by Programmable Logic Controller PLC, the PC control system is according to the program of setting, each device operation of control realizes that preform tests automatically.The prefabricated rods tester can adopt commercially available P104 preform tester.
Automatically the push rod device comprises test board 1, bracing frame 4, servomotor 21 and push arm 9.Guide rail 2 is housed on the test board 1, bracing frame 4 and tester 3 are housed on the guide rail 2, bracing frame 4 can slide along guide rail 2.Push arm track 10 is equipped with by support in test board 1 top, and servomotor 21 is contained in the push arm track 10.Servomotor 21 connects push arm 9, and push arm 9 is hinged with push rod 12, and push rod 12 is equipped with push rod cup 11, and push rod cup 11 withstands prefabricated rods 13 1 ends and advances.
With reference to accompanying drawing 2, a kind of side view of bracing frame 4 of preform Auto-Test System.Bracing frame 4 has roller bearing 5, and roller bearing 5 is contained on the central shaft 22, and central shaft 22 is fixed on the bracing frame longitudinal axis 6, and bigger rubber or the resin material of elasticity coefficient adopted on roller bearing 5 surfaces.During test, prefabricated rods 13 is put on the roller bearing 5, and roller bearing 5 moves with rod and rolls.Height adjustment knob 7 is housed on the bracing frame longitudinal axis 6, can regulates roller bearing 5 height.Front and back position adjusting knob 8 is housed on the central shaft 22, can regulates roller bearing 5 front and back positions.
With reference to accompanying drawing 1, the automatic push rod device of preform Auto-Test System comprises a push arm 9.Push arm 9 promotes prefabricated rods 13 and advances with certain speed in test process.Push arm 9 links to each other with servomotor, and servomotor is installed in the push arm track 10, and push arm 9 moves in the scope of track 10.The length of track 10 determines that by prefabricated rods 13 length to be measured if the length of prefabricated rods 13 is 1500mm, track 10 should be located at about 1300mm.Push arm 9 is hinged with push rod 12, and push rod 12 is equipped with push rod cup 11, under the non-test mode, turns up push rod 12, makes things convenient for prefabricated rods 13 loading and unloading.Push rod cup 11 withstands the prefabricated rods termination and pushes ahead, and push rod cup 11 adopts bigger rubber or the resin material of elasticity coefficient.
Automatically fill the oily device of row's coupling and comprise test chamber 20, lifting screw 14, scale 18, motor 23 and coupling oil bottle 15.Test chamber 20 is arranged in the prefabricated rods tester, fills the difference in height of the oily device of row's coupling by coupling oil in coupling oil level and the test chamber 20 in the control coupling oil bottle 15 automatically, realizes charging into and discharging of coupling oil under action of gravity.
Fig. 1 shows this and fills the oily device synoptic diagram of row's coupling automatically.Motor 23 is fixed on the test board, connects lifting screw 14, drives lifting screw 14 and rises and descend.Coupling oil bottle 15 is fixed on the lifting screw 14, the lifting along with the lifting of lifting screw 14 of coupling oil bottle 15.One pointer 19 is arranged on the lifting screw 14, and pointer 19 points to scale 18, by the reading of pointer 19 on scale lifting position is set in the test process.
15 mouthfuls in coupling oil bottle is downward, and bottleneck connects an oil pipeline 16, and oil pipeline 16 other ends are connected with test chamber 20.When liquid level was lower than in the test chamber 20 liquid level in the coupling oil bottle 15, coupling oil flowed to coupling oil bottle 15, otherwise then flows to test chamber 20.Oil pipeline 16 is unsuitable long, and loose connection oil bottle of energy and test chamber 20 get final product, and pipeline material should select for use oil-soluble little, the transparent pipeline that resistance to aging is strong.One level indicator 17 is arranged on the test chamber 20, show that meter 17 1 ends are communicated with atmosphere, it is communicated with the other end with test chamber 20 upper ends.Showing on the meter has inductor, judges when oil-filled whether measure chamber 20 is full of coupling oil, and discharges bubble.
As shown in Figure 1, with automatic rod feeder, coupling oil fills arranging device and tester interlock automatically.Automatically fill-drain syctem is respectively by PLC control automatically for push rod device and coupling oil, and this two-way PLC can merge mutually in central control system and tester data acquisition system (DAS) and reads.So just can test according to the technological requirement setting program.
The measuring method of a kind of preform automatic measurement system that the present invention relates to is described below:
Test beginning is packed preform 13 1 ends in the test chamber 20 into, is pushed into initial point position.Put down push rod 12, make push rod cup 11 withstand preform 13.Set test point quantity and distance, operation test macro program.The coupling oil bottle with speed V2 by B point rise to the A point afterwards speed change be V1, stop after rising to the C point by the A point.Coupling oil flows into test chamber automatically, and after test chamber was full of, coupling oil flow to liquid level gauge 17, and after inductor was sensed coupling oil on the liquid level gauge 17, coupling oil bottle 15 dropped to a D with speed V1.After arriving the D point, system enters the tester running status, measures and the read test result.After reading the result, coupling oil bottle 15 drops to the B point with V3 speed to be stopped.Next servomotor promotes prefabricated rods with speed V4, stops to setpoint distance, carries out the test of next one point, until end of test (EOT).
A kind of preform automatic test approach that the present invention relates to comprises the position adjustments of preform, the setting of sending excellent speed setting and mating the oil tank rising or falling speed automatically.
The preform position adjustments is to realize by regulating bracing frame 4.Bracing frame 4 is installed in the tester both sides, determines its position according to the length of preform.If preform length is 1500mm, the distance in supported on both sides frame 4 distance test chambeies is generally 700mm.In the dress rod motion, by regulating height adjustment knob 7, the bottom surface that the roller bearing 5 at assurance two ends and the prefabricated rods in the test chamber 20 are imported and exported guarantees preform level in the test at sustained height.By the front and back position of front and back position adjusting knob 8 adjusting roller bearings 5, the outermost and the prefabricated rods in the test chamber 20 of assurance both sides roller bearing 5 are imported and exported the outside on same straight line, guarantee that the preform fore-and-aft direction is parallel with test chamber 20.
Automatically send the speed of rod to control moving of prefabricated rods by control push arm 9 paces and stop, pace V4 can be controlled in 0-20mm/s, and velocity error is controlled at ± 0.2mm/s; Pace V4 preferably is controlled at 10mm/s-15mm/s, and velocity error is controlled at ± 0.12mm/s.In the example, speed is 13mm/s, and velocity error is ± 0.1mm/s that displacement error is ± 0.02mm.
When test, accurate for guaranteeing the result who records, must guarantee that coupling oil is full of test chamber 20 fully, and not have bubble to exist, the speed that this needs accurately control coupling oil to charge into.If the speed that charges into is excessive, can cause occurring bubble in the test cabinet, and be difficult to get rid of, make test result inaccurate.If speed is too small, can influence test speed again, reduce testing efficiency.So, need accurately to set coupling oil bottle 15 rising or falling speeds.
In setting coupling oil bottle 15 rising or falling speed processes, there are three height and positions to need to set.Point A, coupling oil begins to flow to the height and position of test chamber; Point B, the height and position that coupling oil is discharged from test chamber 20 fully; Point C, the height and position that coupling oil can just overflow from liquid level gauge 17; Point D, coupling oil can be full of the height and position of test chamber 20 fully.In coupling oil bottle 15 uphill process, A → C stage, speed V
1The general employing between the 0.5mm/s-1.5mm/s, velocity error is ± 0.1mm/s; Be preferably disposed between the 0.8mm/s-1.2mm/s, error is ± 0.05mm/s.In practical operation, with speed 0.9mm/s, error is measured for ± 0.03mm/s, measures five observations, does not all contain bubble in the test chamber 20.B → A uphill process speed V2, C → B decline process speed V3, speed V2 and speed V3 adopt 1.5mm/s.Point B, some C also are simultaneously spacing up and down.
According to the inventive method and the device and the method for testing thereof of making based on this method, can in the measurement of prefabricated rods, will need manually-operated part to transfer to automatically now, significantly reduced human cost, improved the efficient of testing.
Based on the present patent application theory, can on this basis, carry out modifications and variations, realize new automatic testing equipment.Like this, the present invention requires to have contained all device of creating and method of testings thereof on this principle.
Claims (7)
1. preform Auto-Test System is characterized in that by automatic push rod device, coupling oil charges and discharge device automatically and the prefabricated rods tester is formed;
Automatically the push rod device comprises test board, bracing frame, servomotor and push arm, guide rail is housed on the test board, bracing frame and prefabricated rods tester are housed on the guide rail, bracing frame slides along guide rail, and the push arm track is equipped with by support in test board top, and servomotor is contained in the push arm track, servomotor connects push arm, push arm and push rod are hinged, and push rod is equipped with push rod cup, and push rod cup withstands prefabricated rods one end and advances;
Bracing frame has roller bearing, and roller bearing is contained on the central shaft, and central shaft is fixed on the bracing frame longitudinal axis;
Automatically fill the oily device of row's coupling and comprise test chamber, lifting screw, scale, motor and coupling oil bottle, test chamber is arranged in the prefabricated rods tester, automatically fill the difference in height of the oily device of row's coupling, under action of gravity, realize charging into and discharging of coupling oil by coupling oil in coupling oil level and the test chamber in the control coupling oil bottle;
Described motor is fixed on the test board, connects lifting screw, drives lifting screw and rises and descend; The coupling oil bottle is fixed on the lifting screw, the lifting along with the lifting of lifting screw of coupling oil bottle; One pointer is arranged on the lifting screw, and the pointed scale is provided with lifting position by the reading of pointer on scale in the test process;
Described coupling oil bottle mouth is downward, and bottleneck connects an oil pipeline, and the oil pipeline other end is connected with test chamber, and when liquid level was lower than in the test chamber liquid level in the coupling oil bottle, coupling oil flowed to the coupling oil bottle, otherwise then flows to test chamber;
Height adjustment knob is housed on the support frame as described above longitudinal axis regulates the roller bearing height, the front and back position adjusting knob is housed on the central shaft, regulate the roller bearing front and back position;
One level indicator is arranged on the described test chamber, show that meter one end is communicated with atmosphere, it is communicated with the other end with the test chamber upper end; Showing on the meter has inductor, judges when oil-filled whether test chamber is full of coupling oil, and discharges bubble.
2. preform Auto-Test System according to claim 1, it is characterized in that described automatic push rod device, coupling oil charge and discharge device and the prefabricated rods tester is connected into the computer PC control system by Programmable Logic Controller PLC automatically, the PC control system is according to the program of setting, each device operation of control, the realization preform is tested automatically.
3. preform Auto-Test System according to claim 1 is characterized in that described prefabricated rods tester adopts P104 preform tester.
4. preform Auto-Test System according to claim 1 is characterized in that described roller surface adopts bigger rubber or the resin material of elasticity coefficient.
5. preform Auto-Test System according to claim 1 is characterized in that described push rod cup adopts bigger rubber or the resin material of elasticity coefficient.
6. the measuring method of the described a kind of preform automatic measurement system of claim 1 is characterized in that:
Test beginning is packed preform one end in the test chamber into, is pushed into initial point position; Put down push rod, make push rod cup withstand preform; Set test point quantity and distance, operation test macro program; The coupling oil bottle with speed V2 by B point rise to the A point afterwards speed change be V1, stop after rising to the C point by the A point; Coupling oil flows into test chamber automatically, and after test chamber was full of, coupling oil flow to liquid level gauge, and after inductor was sensed coupling oil on the liquid level gauge, the coupling oil bottle dropped to a D with speed V1; After arriving the D point, system enters the tester running status, measures and the read test result; After reading the result, the coupling oil bottle drops to the B point with V3 speed to be stopped; Next servomotor promotes prefabricated rods with speed V4, stops to setpoint distance, carries out the test of next one point, until end of test (EOT).
7. the measuring method of a kind of preform automatic measurement system according to claim 6 is characterized in that described preform automatic test approach also comprises the position adjustments of preform, the setting of sending excellent speed setting and mating the oil tank rising or falling speed automatically;
The preform position adjustments is to realize by regulating bracing frame, bracing frame is installed in the tester both sides, determine its position according to the length of preform, preform length is 1500mm, the distance in supported on both sides frame distance test chamber is 700mm, in the dress rod motion, by regulating height adjustment knob, the bottom surface that the roller bearing at assurance two ends and the prefabricated rods in the test chamber are imported and exported is at sustained height, guarantee preform level in the test, by the front and back position of front and back position adjusting knob adjusting roller bearing, the outermost and the prefabricated rods in the test chamber of assurance both sides roller bearing are imported and exported the outside on same straight line, guarantee that the preform fore-and-aft direction is parallel with test chamber;
Automatically send the speed of rod to control moving of prefabricated rods by control push arm pace and stop, pace V4 is controlled at 0-20mm/s, and velocity error is controlled at ± 0.2mm/s;
In setting coupling oil bottle rising or falling speed process, have three height and positions to need to set: some A, coupling oil begins to flow to the height and position of test chamber; Point B, the height and position that coupling oil is discharged from test chamber fully; Point C, the height and position that coupling oil can just overflow from liquid level gauge; Point D, coupling oil can be full of the height and position of test chamber fully; In coupling oil bottle uphill process, A → C stage, with speed 0.9mm/s, error is measured for ± 0.03mm/s, measures five observations, does not all contain bubble in the test chamber; B → A uphill process speed V2, C → B decline process speed V3, speed V2 and speed V3 adopt 1.5mm/s, and some B, some C also are simultaneously spacing up and down.
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| CN109579740A (en) * | 2017-04-20 | 2019-04-05 | 浙江富通光纤技术有限公司 | The measuring device of preform |
| CN111443061A (en) * | 2020-01-10 | 2020-07-24 | 长飞光纤光缆股份有限公司 | Optical fiber perform automatic check out test set |
| CN111175306B (en) * | 2020-01-31 | 2021-04-02 | 武汉大学 | Automatic bubble detection system and method for optical fiber preform based on machine vision |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776411A (en) * | 2005-10-28 | 2006-05-24 | 东华大学 | Polymer optical fiber precast rod refractivity fine light beam scanning measuring method and device |
| CN201666847U (en) * | 2010-02-09 | 2010-12-08 | 中天科技精密材料有限公司 | Automatic measurement system of optical fiber preform |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776411A (en) * | 2005-10-28 | 2006-05-24 | 东华大学 | Polymer optical fiber precast rod refractivity fine light beam scanning measuring method and device |
| CN201666847U (en) * | 2010-02-09 | 2010-12-08 | 中天科技精密材料有限公司 | Automatic measurement system of optical fiber preform |
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| JP特开2000-171349A 2000.06.23 |
| JP特开2000-356570A 2000.12.26 |
| JP特开2001-4493A 2001.01.12 |
| JP特开平8-201220A 1996.08.09 |
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Application publication date: 20100728 Assignee: Jiangsu Zhongtian Technology Software Technology Co., Ltd. Assignor: Jiangsu Zhongtian Technology Precision Material Co., Ltd. Contract record no.: 2014320010073 Denomination of invention: System and method for automatically measuring optical fiber preform Granted publication date: 20111221 License type: Exclusive License Record date: 20140512 |
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