CN106768857B - Intelligent test method for optical module - Google Patents
Intelligent test method for optical module Download PDFInfo
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- CN106768857B CN106768857B CN201611069598.5A CN201611069598A CN106768857B CN 106768857 B CN106768857 B CN 106768857B CN 201611069598 A CN201611069598 A CN 201611069598A CN 106768857 B CN106768857 B CN 106768857B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention belongs to the technical field of optical modules. The invention aims to provide an intelligent testing method of an efficient optical module. The technical scheme adopted is as follows: an intelligent test method for optical modules is to install a qualified optical module and a plurality of optical modules to be detected on an intelligent optical module test device, and to test optical signals sent by the optical modules to be detected and received by the qualified optical modules in turn or test optical signals sent by the qualified optical modules to be detected and received by the optical modules to be detected in turn, and then compare the optical signals with standard values, so as to confirm whether the optical modules to be detected are qualified or not. The optical module testing device comprises a rotating platform, a testing host, a joint mechanism and a material fixing mechanism. The invention can greatly improve the testing efficiency of the optical module and is extremely suitable for batch testing.
Description
Technical Field
The invention belongs to the technical field of optical modules, and particularly relates to an intelligent testing method of an optical module.
Background
An optical module (optical module) is composed of an optoelectronic device, a functional circuit, an optical interface and the like, and the optoelectronic device comprises an emitting part and a receiving part. In short, the optical module is used for photoelectric conversion, the transmitting end converts an electrical signal into an optical signal, and the receiving end converts the optical signal into an electrical signal after the optical signal is transmitted through an optical fiber. The optical module is mainly divided into an optical transmitting module, an optical receiving module and an optical receiving-transmitting integrated module.
In the prior art, when testing the light emitting module or the light receiving module, the light modules to be tested are usually manually installed on the test board one by one, and the light modules in the previous batch are taken down and replaced by the light modules in the next batch after the test is completed, but the method has low efficiency, is only suitable for small batch test, and is not suitable for large batch test. Meanwhile, in the prior art, after the optical module is tested, workers manually sort the optical module according to the test result, so that on one hand, the efficiency is low, and on the other hand, wrong sorting is easy to cause, and the intelligent level is extremely low.
Disclosure of Invention
The invention aims to provide an intelligent testing method of an efficient optical module.
In order to achieve the aim of the invention, the invention adopts the following technical scheme: an intelligent test method of optical modules is to install a qualified optical module and a plurality of optical modules to be detected on an intelligent optical module test device, and to test optical signals sent by the optical modules to be detected and received by the qualified optical modules in turn or test optical signals sent by the qualified optical modules to be detected and received by the optical modules to be detected in turn, and then compare the optical signals with standard values, so as to confirm whether the optical modules to be detected are qualified;
the optical module testing device comprises a rotating platform, a testing host, a joint mechanism and a material fixing mechanism; the rotary platform comprises a stepping motor and a turntable driven by the stepping motor, and the stepping motor is controlled by the test host; the upper surface of the turntable is provided with a plurality of placing holes which vertically penetrate through the turntable, and the placing holes are uniformly distributed in a ring shape around the center of the turntable; the shape and the size of the placing hole are matched with those of the optical module to be detected;
the joint mechanism comprises an upper joint assembly and a lower joint assembly which are oppositely arranged above and below one side of the turntable, the upper joint assembly comprises an upper clamping piece and a first linear motor which is fixedly arranged, the output end of the first linear motor faces downwards, and the end part of the first linear motor is fixedly provided with the upper clamping piece; the lower joint assembly comprises a lower clamping piece and a second linear motor which is fixedly arranged, the output end of the second linear motor faces upwards, and the end part of the second linear motor is fixedly provided with the lower clamping piece; the first linear motor and the second linear motor are controlled by the test host, and the upper clamping piece and the lower clamping piece are opposite to the placing hole;
the material fixing mechanism can fix the optical module to be detected in the mounting hole or release the optical module to be detected from the mounting hole under the control of the test host.
Preferably, the material fixing mechanism comprises a propping assembly and a placing assembly, each placing hole is respectively provided with a propping assembly, the propping assembly comprises a movable cavity positioned in the turntable, the movable cavity is positioned at one side of the placing hole, a transverse first guide hole is arranged between the movable cavity and the placing hole, and a matched top plate is arranged in the first guide hole in a penetrating manner; one side of the top plate extends into the mounting hole, and the other side of the top plate is positioned in the movable cavity and is inclined obliquely downwards; the middle part of the top plate is provided with a resisting part, the resisting part is positioned in the movable cavity, the resisting part is fixedly connected with one end of a first spiral spring, and the other end of the first spiral spring is fixedly connected with the inner wall of the movable cavity; the top plate is closed and is provided with a Kong Shidi spiral spring in a natural state; the bottom of the movable cavity is provided with a second guide hole penetrating through the lower surface of the turntable, a push rod is penetrated in the second guide hole, the upper end surface of the push rod is an inclined surface matched with the top plate, and the lower end of the push rod is provided with a pressing disc; the push rod is sleeved with a second spiral spring, one end of the second spiral spring is fixedly connected with the bottom surface of the rotary disc, and the other end of the second spiral spring is fixedly connected with the pressing disc.
Preferably, the placing component comprises a third linear motor and a top block, wherein the third linear motor is fixedly arranged below the turntable, the output end of the third linear motor faces upwards, and the top block is fixedly connected with the output end of the third linear motor and is opposite to the pressing disc; the third linear motor is controlled by the test host, and the placing component is provided with two groups and is respectively positioned on one side of the turntable close to the joint mechanism and one side of the turntable far away from the joint mechanism.
Preferably, the rotary table further comprises a supporting upright post and a chassis, wherein the supporting upright post is positioned on the side surface of the rotary table, a transverse plate is fixedly arranged on the upper part of the supporting upright post, and a first linear motor is fixedly arranged on the lower surface of the transverse plate; the support upright post and the second linear motor. The third linear motor and the stepping motor are fixedly arranged on the chassis.
Preferably, the upper clamping piece is connected with the output end of the first linear motor through a guide rod, one surface of the support upright column facing the rotary platform is provided with a guide groove extending along the length direction of the support upright column, and the guide groove is matched with the guide rod; the middle part of guide bar is connected with first linear motor, and the fixed folder that sets up of one end, the other end stretches into in the guide way.
Preferably, the push rod and the top plate are made of wear-resistant rare earth alloy materials, and the wear-resistant rare earth alloy materials comprise the following components in percentage by weight: 3.5% of carbon, 6% of silicon, 4.5% of chromium, 2% of zirconium, 1% of magnesium, 1.5% of vanadium, 2% of manganese, 1% of nickel, 2% of cesium, 3% of rare earth elements and the balance of unavoidable impurities generated in the smelting process; the rare earth elements are lanthanum and holmium with the proportion of 2:3.
The invention has the beneficial effects of being capable of greatly improving the testing efficiency of the optical module and being extremely suitable for batch testing. Specifically, the invention realizes rapid detection by alternately butting one qualified optical module with a plurality of optical modules to be detected, and reduces the waste of manpower and material resources. The optical module testing device of the invention has the working process that if the module to be detected is an optical emission module, one end of the optical fiber jumper is connected with the qualified optical receiving module, then the other end of the optical fiber jumper is clamped on the upper clamping piece for positioning, and then electrically connecting the qualified light receiving module with the testing host, and then electrically connecting the connector at one end of the signal wire with the testing host, wherein the connector at the other end is clamped on the lower clamping piece. If the module to be detected is a light receiving module, the opposite is true. The working personnel put into the light module to be detected in the laying hole on the station and fix the light module by utilizing the fixed material component, when the light module to be detected rotates to the lower part of the joint mechanism under the drive of the turntable, the test host controls the first linear motor and the second linear motor to act, the butt joint with the light module to be detected is realized, the test host tests the light module to be detected, after the test is finished, the light module to be detected is qualified and then is put into a qualified product area by the cooperation of the turntable and the fixed material component, and otherwise, the light module to be detected is put into a disqualified product area. The invention adopts the test host to integrally control the operation of the equipment, has high relevance of action instructions, and avoids errors caused by manual operation. Meanwhile, workers only need to feed materials to the rotary table, the intelligent level is extremely high, and the technical requirements on the workers are greatly reduced.
Drawings
FIG. 1 is a schematic diagram of an optical module testing apparatus;
FIG. 2 is a schematic structural view of a turntable;
FIG. 3 is a schematic view of the installation of the tightening assembly;
FIG. 4 is a schematic view of the structure of FIG. 3 in use;
fig. 5 is a schematic view showing another use state of the structure shown in fig. 3.
Detailed Description
An intelligent test method for optical modules is to install a qualified optical module and a plurality of optical modules to be detected on an intelligent optical module test device, and to test optical signals sent by the optical modules to be detected and received by the qualified optical modules in turn or test optical signals sent by the qualified optical modules to be detected and received by the optical modules to be detected in turn, and then compare the optical signals with standard values, so as to confirm whether the optical modules to be detected are qualified or not. Referring to fig. 1-5, the optical module testing device comprises a rotary platform, a testing host 1, a joint mechanism and a material fixing mechanism. The rotary platform comprises a stepping motor 2 and a turntable 3 driven by the stepping motor 2, wherein the stepping motor 2 is controlled by a test host 1. The upper surface of the turntable 3 is provided with a plurality of mounting holes 4 penetrating the turntable 3 in the vertical direction, and as shown in fig. 1 and 2, the number of the mounting holes 4 is 6, and may be more in practice. The placement holes 4 are uniformly distributed in a ring shape around the center of the turntable 3. The shape and the size of the placing hole 4 are matched with those of the optical module to be detected, namely, the shape of the placing hole 4 is the same as that of the optical module to be detected, and the placing hole 4 is also in a cuboid shape because the optical module is in a cuboid shape, the size of the placing hole 4 is slightly larger than that of the optical module, and the placing hole 4 can guide the optical module.
The joint mechanism comprises an upper joint assembly and a lower joint assembly which are oppositely arranged above and below one side of the turntable 3, the upper joint assembly comprises an upper clamping piece 6 and a first linear motor 5 which is fixedly arranged, and the output end of the first linear motor 5 faces downwards and the end part of the first linear motor is fixedly provided with the upper clamping piece 6. The lower joint assembly comprises a lower clamping piece 7 and a second linear motor 8 which is fixedly arranged, wherein the output end of the second linear motor 8 faces upwards, and the lower clamping piece 7 is fixedly arranged at the end part. The first linear motor 5 and the second linear motor 8 are controlled by the test host 1, and the upper clamping piece 6 and the lower clamping piece 7 are opposite to the placing hole 4. The upper clamping member 6 and the lower clamping member 7 have more specific structures, for example, may be arc-shaped clips, or may be two opposite clamping plates, which are not described herein again because of their simpler structures.
The material fixing mechanism can fix the optical module to be detected in the placing hole 4 or release the optical module to be detected from the placing hole 4 under the control of the test host 1. That is, during testing, the fixing mechanism is used for fixing the optical module in the placement hole 4, and after testing, the optical module can be discharged from the placement hole 4 through the fixing mechanism under the control of the testing host 1. The concrete structure of the fixed material mechanism can be that the middle part of the turntable 3 is provided with a through hole, namely the turntable 3 is circular, the side wall of the through hole is provided with a transverse hole communicated with the placing hole 4, the transverse hole is internally provided with a pressing block with magnetism, the pressing block can press the optical module under the action of a reset spring, an electromagnet is arranged in the through hole, and after the electromagnet is electrified, the pressing block can be pulled back by overcoming the elasticity of the reset spring, so that the discharging is realized. Likewise, other ways of performing the same function are possible.
According to the invention, the qualified optical modules are in butt joint with the plurality of optical modules to be detected in turn, so that the rapid detection is realized, and the waste of manpower and material resources is reduced. The optical module testing device of the invention has the working process that if the module to be detected is an optical emission module, one end of an optical fiber jumper is connected with a qualified optical receiving module, then the other end of the optical fiber jumper is clamped on an upper clamping piece 6 for positioning, then the qualified optical receiving module is electrically connected with a testing host 1, then a connector at one end of a signal wire is electrically connected with the testing host 1, and a connector at the other end is clamped on a lower clamping piece 7. If the module to be detected is a light receiving module, the opposite is true. The optical module to be detected is placed into the placing hole 4 on the station by a worker and fixed by using the material fixing component, when the optical module to be detected rotates below the joint mechanism under the drive of the turntable 3, the test host 1 controls the first linear motor 5 and the second linear motor 8 to act, the butt joint with the optical module to be detected is realized, the optical module to be detected is tested by the test host 1, after the test is finished, the optical module to be detected is qualified and placed into a qualified product area through the cooperation of the turntable 3 and the material fixing component, and otherwise, the optical module to be detected is placed into a disqualified product area. The invention adopts the test host 1 to integrally control the operation of the equipment, has high relevance of action instructions, and avoids errors caused by manual operation. Meanwhile, workers only need to feed materials to the rotary table 3, the intelligent level is extremely high, and the technical requirements on the workers are greatly reduced.
Of course, in order to simplify the structure, it may be better to use a material fixing mechanism as shown in fig. 3-5, where each of the placement holes 4 is provided with a tightening component and a placing component, the tightening component includes a movable cavity 9 located in the turntable 3, the movable cavity 9 is located at one side of the placement hole 4, a first transverse guide hole is disposed between the movable cavity 9 and the placement hole 4, and a matched top plate 10 is penetrated in the first guide hole. One side of the top plate 10 extends into the placing hole 4, and the other side of the top plate is positioned in the movable cavity 9 and is inclined obliquely downwards. The middle part of roof 10 sets up the department of keeping out 11, keep out 11 are located movable chamber 9, keep out 11 and the one end rigid coupling of first coil spring 12, the other end rigid coupling of first coil spring 12 and the inner wall in movable chamber 9. The first coil spring 12 is in a natural state when the top plate 10 closes the mounting hole 4. The bottom of the movable cavity 9 is provided with a second guide hole penetrating through the lower surface of the turntable 3, a push rod 13 is arranged in the second guide hole in a penetrating manner, the upper end face of the push rod 13 is an inclined face matched with the top plate 10, and the lower end of the push rod is provided with a pressing plate 14. The push rod 13 is sleeved with a second spiral spring 15, one end of the second spiral spring 15 is fixedly connected with the bottom surface of the rotary disc 3, and the other end of the second spiral spring is fixedly connected with the pressing disc 14. When the optical module fixing device is used, when a worker loads materials, the pressing plate 14 is pressed, the push rod 13 is driven to move upwards, the push rod 13 is used for driving the top plate 10 to withdraw from the mounting hole 4, after the optical module is placed in the mounting hole 4, the pressing plate 14 is loosened, and the top plate 10 automatically abuts against the optical module to realize fixing. When the test is completed, the test host 1 controls the placing component to push the pressing disc 14, and the optical module can be placed.
The component of putting is more in the constitution mode, for example: the assembly shown in fig. 1 comprises a third linear motor 16 and a top block 17, wherein the third linear motor 16 is fixedly arranged below the turntable 3, the output end of the third linear motor is upward, and the top block 17 is fixedly connected with the output end of the third linear motor 16 and is opposite to the pressing disc 14. The third linear motor 16 is controlled by the test host 1, and the two sets of the placing components are respectively positioned on one side of the turntable 3 close to the joint mechanism and one side of the turntable 3 far away from the joint mechanism. That is, a reject receiving tray or a line corresponding to the reject may be provided below the left side of the turntable 3, and a reject receiving tray or a line corresponding to the reject may be provided below the right side of the turntable 3, and when the reject is detected, the left third linear motor 16 is extended under the control of the test host 1 to push the push rod 13, thereby achieving reject blanking. When the detection result is qualified, the stepper motor 2 drives the qualified optical module on the turntable 3 to rotate to the right, and the other third linear motor 16 acts.
For the installation of the optical module testing device of being convenient for, optical module testing device still includes support post 18 and chassis 19, support post 18 is located the side of rotary platform and the fixed diaphragm that sets up in upper portion, the fixed first linear motor 5 that sets up of lower surface of diaphragm. The support upright 18, the second linear motor 8, the third linear motor 16 and the stepper motor 2 are fixedly arranged on a chassis 19. Further, since the upper clamping member 6 is mounted on the supporting upright 18, in order to enable the optical fiber jumper mounted thereon to be connected with the optical module to be detected more accurately, preferably, the upper clamping member 6 is connected with the output end of the first linear motor 5 through the guide rod 20, a guide groove 21 extending along the length direction of the supporting upright 18 is provided on one surface of the supporting upright 18 facing the rotating platform, and the guide groove 21 is matched with the guide rod 20. The middle part of the guide rod 20 is connected with the first linear motor 5, one end of the guide rod is fixedly provided with the upper clamping piece 6, and the other end of the guide rod extends into the guide groove 21.
Since they are susceptible to wear during the process of extrusion and sliding, in order to further improve the stability of the present invention, it is preferable that the push rod 13 and the top plate 10 are made of a wear-resistant rare earth alloy material, wherein the wear-resistant rare earth alloy material comprises the following components in percentage by weight: 3.5% of carbon, 6% of silicon, 4.5% of chromium, 2% of zirconium, 1% of magnesium, 1.5% of vanadium, 2% of manganese, 1% of nickel, 2% of cesium, 3% of rare earth elements and the balance of unavoidable impurities generated in the smelting process; the rare earth elements are lanthanum and holmium with the proportion of 2:3.
The wear-resistant rare earth alloy material is manufactured by the following steps:
a. iron is put into a furnace to be melted to a molten state;
b. then, alloy elements are added into the furnace for alloying in three batches, wherein the first batch is: chromium, vanadium, cesium; second batch: silicon, manganese, lanthanum, holmium; third batch: other remaining components; the time interval for adding elements in each batch is 40-45 minutes, and the elements are uniformly stirred after being added.
c. And detecting and adjusting the content of chemical element components until the chemical element components are qualified, casting, and performing heat treatment after molding.
The wear-resistant rare earth material disclosed by the invention and the comparison material published in the patent document with the application number of 201510409506.2 are subjected to performance test, and the obtained performance indexes are shown in the following table:
| coefficient of friction | Tensile strength of | HB | |
| The invention is that | 0.03 | 1170 | 420 |
| Comparative example | 0.08 | 1210 | 410 |
As can be seen from the table, the wear-resistant rare earth alloy material adopted by the invention has excellent performance indexes. In particular, the friction coefficient is greatly lower than that of the conventional alloy materials on the market and is also lower than that of the alloy materials in the comparative example, so that the alloy material has excellent friction resistance, extremely high tensile strength and hardness and is not easy to deform. Thus greatly improving the working stability of the invention.
Claims (6)
1. An intelligent testing method of an optical module is characterized in that: mounting a qualified optical module and a plurality of optical modules to be detected on an intelligent optical module testing device, and determining whether the optical modules to be detected are qualified or not by alternately testing optical signals sent by the optical modules to be detected and received by the qualified optical modules to be detected or alternately testing optical signals sent by the qualified optical modules to be detected and then comparing the optical signals with a standard value;
the optical module testing device comprises a rotating platform, a testing host (1), a joint mechanism and a material fixing mechanism; the rotary platform comprises a stepping motor (2) and a turntable (3) driven by the stepping motor (2), and the stepping motor (2) is controlled by a test host (1); the upper surface of the turntable (3) is provided with a plurality of placing holes (4) which vertically penetrate through the turntable (3), and the placing holes (4) are uniformly distributed in a ring shape around the center of the turntable (3); the shape and the size of the placement hole (4) are matched with those of the optical module to be detected;
the joint mechanism comprises an upper joint assembly and a lower joint assembly which are oppositely arranged above and below one side of the turntable (3), the upper joint assembly comprises an upper clamping piece (6) and a first linear motor (5) which is fixedly arranged, the output end of the first linear motor (5) faces downwards, and the end part of the first linear motor is fixedly provided with the upper clamping piece (6); the lower joint assembly comprises a lower clamping piece (7) and a second linear motor (8) which is fixedly arranged, wherein the output end of the second linear motor (8) faces upwards, and the lower clamping piece (7) is fixedly arranged at the end part of the second linear motor; the first linear motor (5) and the second linear motor (8) are controlled by the test host (1), and the upper clamping piece (6) and the lower clamping piece (7) are opposite to the placing hole (4);
the light module to be detected can be fixed in the placing hole (4) by the material fixing mechanism or discharged from the placing hole (4) under the control of the test host (1).
2. The intelligent testing method of an optical module according to claim 1, wherein: the feeding mechanism comprises a propping assembly and a placing assembly, each placing hole (4) is provided with a propping assembly respectively, the propping assembly comprises a movable cavity (9) positioned in the turntable (3), the movable cavity (9) is positioned at one side of the placing hole (4), a transverse first guide hole is formed between the movable cavity (9) and the placing hole (4), and a matched top plate (10) is arranged in the first guide hole in a penetrating mode; one side of the top plate (10) extends into the placing hole (4), and the other side of the top plate is positioned in the movable cavity (9) and is inclined downwards in an inclined way; the middle part of the top plate (10) is provided with a resisting part (11), the resisting part (11) is positioned in the movable cavity (9), the resisting part (11) is fixedly connected with one end of a first spiral spring (12), and the other end of the first spiral spring (12) is fixedly connected with the inner wall of the movable cavity (9); the first spiral spring (12) is in a natural state when the top plate (10) seals the mounting hole (4); the bottom of the movable cavity (9) is provided with a second guide hole penetrating through the lower surface of the rotary table (3), a push rod (13) is arranged in the second guide hole in a penetrating way, the upper end surface of the push rod (13) is an inclined surface matched with the top plate (10), and the lower end of the push rod is provided with a pressing plate (14); the push rod (13) is sleeved with a second spiral spring (15), one end of the second spiral spring (15) is fixedly connected with the bottom surface of the rotary disc (3), and the other end of the second spiral spring is fixedly connected with the pressing disc (14).
3. The intelligent testing method of an optical module according to claim 2, wherein: the piece placing assembly comprises a third linear motor (16) and a top block (17), the third linear motor (16) is fixedly arranged below the rotary table (3) and the output end of the third linear motor is upward, and the top block (17) is fixedly connected with the output end of the third linear motor (16) and is opposite to the pressing disc (14); the third linear motor (16) is controlled by the test host (1), and the two sets of the workpiece placing components are respectively positioned on one side of the turntable (3) close to the joint mechanism and one side of the turntable (3) far away from the joint mechanism.
4. A method for intelligent testing of an optical module according to claim 3, wherein: the automatic feeding device is characterized by further comprising a supporting upright post (18) and a chassis (19), wherein the supporting upright post (18) is positioned on the side surface of the rotary platform, a transverse plate is fixedly arranged on the upper part of the supporting upright post, and a first linear motor (5) is fixedly arranged on the lower surface of the transverse plate; the support upright post (18), the second linear motor (8), the third linear motor (16) and the stepping motor (2) are fixedly arranged on the chassis (19).
5. The intelligent testing method of an optical module according to claim 4, wherein: the upper clamping piece (6) is connected with the output end of the first linear motor (5) through a guide rod (20), one surface of the supporting upright post (18) facing the rotating platform is provided with a guide groove (21) extending along the length direction of the supporting upright post (18), and the guide groove (21) is matched with the guide rod (20); the middle part of the guide rod (20) is connected with the first linear motor (5), one end of the guide rod is fixedly provided with an upper clamping piece (6), and the other end of the guide rod extends into the guide groove (21).
6. The intelligent testing method of an optical module according to claim 5, wherein: the push rod (13) and the top plate (10) are made of wear-resistant rare earth alloy materials, and the wear-resistant rare earth alloy materials comprise the following components in percentage by weight: 3.5% of carbon, 6% of silicon, 4.5% of chromium, 2% of zirconium, 1% of magnesium, 1.5% of vanadium, 2% of manganese, 1% of nickel, 2% of cesium, 3% of rare earth elements and the balance of unavoidable impurities generated in the smelting process; the rare earth elements are lanthanum and holmium with the proportion of 2:3.
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| CN112938406A (en) * | 2021-02-02 | 2021-06-11 | 锐思为精(武汉)科技有限公司 | Optical module testing device capable of continuously detecting |
| CN113289930A (en) * | 2021-05-24 | 2021-08-24 | 湖南健坤激光科技有限公司 | Optical module test equipment |
| CN116689309B (en) * | 2023-08-08 | 2023-10-17 | 安盈半导体技术(常州)有限公司 | Automatic needle implantation detection device |
| CN116996118A (en) * | 2023-09-19 | 2023-11-03 | 黑龙江和睿信诚科技有限公司 | Optical module production debugging equipment and assembly |
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