CN116448394B - Narrow linewidth fiber laser detection device - Google Patents
Narrow linewidth fiber laser detection device Download PDFInfo
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- CN116448394B CN116448394B CN202310700338.7A CN202310700338A CN116448394B CN 116448394 B CN116448394 B CN 116448394B CN 202310700338 A CN202310700338 A CN 202310700338A CN 116448394 B CN116448394 B CN 116448394B
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 239000000835 fiber Substances 0.000 title description 5
- 239000013307 optical fiber Substances 0.000 claims abstract description 13
- 230000000087 stabilizing effect Effects 0.000 claims description 32
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 244000309464 bull Species 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- G01M11/08—Testing mechanical properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Abstract
The invention relates to narrow linewidth optical fiber laser detection equipment, which comprises a frame and a laser body, wherein an installation groove is formed in the frame, a driving piece is arranged in the installation groove, two positioning pieces are symmetrically arranged on the driving piece, and the two positioning pieces are used for positioning the laser body; the top of the frame is also provided with an impact detection unit which is positioned above the laser body and is used for detecting the impact of the laser body; according to the invention, the driving piece and the positioning piece are used in a matched manner, the driving piece drives the two positioning pieces to clamp the laser body from two sides, and meanwhile, the upper bulge in the positioning piece can position the laser body from the upper side, so that the laser body can be positioned from multiple directions, the stability is good, and meanwhile, the spring type telescopic rod is arranged in the positioning piece, so that the laser bodies with different specifications can be clamped and positioned.
Description
Technical Field
The invention belongs to the technical field of detection equipment, and particularly relates to narrow linewidth fiber laser detection equipment.
Background
The optical fiber laser has the characteristics of miniaturization, high beam quality and high electro-optic conversion efficiency, and the narrow linewidth optical fiber laser in the optical fiber laser has the characteristics of narrow linewidth, low phase noise and the like while inheriting the advantages of the optical fiber laser, and has higher requirements on the use environment of the laser, in particular to the aspect of shock resistance. Then, the narrow linewidth laser needs to be subjected to impact resistance detection before being used. The impact resistance detection mode for laser detection in the current market generally comprises the steps of placing the narrow linewidth optical fiber laser in the groove when the impact resistance detection is carried out on the narrow linewidth optical fiber laser, then carrying out the impact resistance detection on the narrow linewidth optical fiber laser through equipment, and solving the problem that the narrow linewidth optical fiber laser is easy to deviate and is unfavorable for detection.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the narrow linewidth optical fiber laser detection equipment, and the problem of providing the narrow linewidth optical fiber laser detection equipment with good stability is effectively solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the narrow linewidth optical fiber laser detection device comprises a frame and a laser body, wherein a mounting groove is formed in the frame, a driving piece is arranged in the mounting groove, two positioning pieces are symmetrically arranged on the driving piece, and the two positioning pieces are used for positioning the laser body; the top of frame still is provided with the impact detection unit, and the impact detection unit is located the top of laser instrument body, and the impact detection unit is used for the impact detection to the laser instrument body.
Preferably, the driving piece comprises a driving motor, the driving motor is fixedly connected with the frame, an output shaft of the driving motor is fixedly connected with the driving screw rod, the driving screw rod is rotationally connected with the mounting groove, a first threaded area and a second threaded area are formed on the driving screw rod, the directions of threads of the first threaded area and the second threaded area are opposite, and the first threaded area and the second threaded area are respectively arranged in one-to-one correspondence with the two positioning pieces.
Preferably, the locating piece includes the silk piece, the silk piece is located the inside of mounting groove and with drive lead screw threaded connection, silk piece and mounting panel fixed connection, two downthehole equal sliding connection of pole on the mounting panel have the gag lever post, the equal fixedly connected with stopper of one end of two gag lever posts, the other end of two gag lever posts all with L shaped plate fixed connection, L shaped plate is articulated with L shape frame, the top of L shape frame is fixed to be formed with protruding and lower arch, and it is articulated through spring type telescopic link between mounting panel and the L shape frame, set up the through-hole that supplies spring type telescopic link to pass through on the L shaped plate.
Preferably, the impact detection unit comprises a stirring piece and an impact piece, the stirring piece is fixedly connected with the impact piece through a belt body, and the impact piece is positioned above the laser body.
Preferably, the stirring piece comprises a hanging frame, the hanging frame is fixedly connected with a supporting frame, a servo motor is fixedly connected to the supporting frame, an output shaft of the servo motor is fixedly connected with a rotating rod, the rotating rod is located inside the rotating cylinder, the rotating cylinder is fixedly connected with a circular plate, the circular plate is fixedly connected with a rotating shaft, a reset spring is sleeved on the rotating shaft and located between the circular plate and the hanging frame, a swinging rod is fixedly connected to the end of the rotating shaft, an outer cylinder is rotatably connected to the rotating shaft, the outer cylinder is fixedly connected to the rotating plate, a stop block is fixedly connected to the rotating plate, a connecting rod is fixedly connected to the hanging frame, a lug is fixedly connected to the connecting rod, and the lug and the swinging rod are correspondingly arranged.
Preferably, the shape of the rotating rod is a square structure, the inner nozzle of the rotating cylinder is formed into a square structure, an inclined plane is formed on the convex block, and the inclined plane is used for separating the swing rod from the stop block.
Preferably, the impact piece comprises a hanging bracket, the hanging bracket is fixedly connected with a pulley in a rotating manner, the top of the belt body is wound around the pulley and is fixedly connected with a rotating plate, the bottom of the belt body is fixedly connected with an impact block, the impact block is fixedly connected with a connecting block, the connecting block is fixedly connected with a stabilizing block, a round hole in the stabilizing block is slidably connected with a stabilizing rod, the stabilizing rod is fixedly connected with a stabilizing groove arranged in the hanging bracket, a stabilizing spring is sleeved on the stabilizing rod, and the stabilizing spring is located above the stabilizing block.
Preferably, a fixed plate is fixedly connected inside the impact block, a compression spring is arranged below the fixed plate, a driving block is arranged below the compression spring and is arranged inside the impact block in a sliding manner, and the driving block is fixedly connected with the impact rod; the bottom fixedly connected with first contact of fixed plate, the top fixedly connected with of drive piece corresponds with the second contact of first contact.
Preferably, the structures of the first contact and the second contact are the same; all include the casing, the inside of casing is provided with supporting spring, and the supporting spring top is equipped with the supporting shoe, supporting shoe and casing sliding connection, fixedly connected with contact on the supporting shoe.
Compared with the prior art, the invention has the beneficial effects that:
1) In operation, through the cooperation of the driving piece and the locating piece that set up, can drive two locating pieces and carry out the centre gripping to the laser instrument body from both sides through the driving piece, can fix a position the laser instrument body from the top through the epirelief in the locating piece simultaneously, consequently can fix a position the laser instrument body from a plurality of directions, stability is good, simultaneously because the inside of locating piece is provided with spring type telescopic link, consequently can carry out the centre gripping location to the laser instrument body of different specifications;
2) In operation, the striking piece is driven to continuously move up and down through the cooperation of the striking piece and the striking piece, and the striking piece is used for striking and detecting the laser body piece conveniently;
3) In operation, through the matched use of the first contact, the second contact and the like, the detection result can be shown to be good through the contact matching of the first contact and the second contact, and the detection result is shown to be damaged through the fact that the first contact and the second contact are not in contact for a long time and the matching lamp is not bright;
4) In operation, through the cooperation use of the hold-down spring and the supporting spring etc. that set up, can play the effect of protection to the contact through the supporting spring, can play the effect of protection to the impact bar through the hold-down spring.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic diagram of a narrow linewidth fiber laser detection apparatus according to the present invention;
FIG. 2 is a schematic view of a driving member according to the present invention;
FIG. 3 is a schematic view of a positioning member according to the present invention;
FIG. 4 is a schematic diagram of a toggle member according to the present invention;
FIG. 5 is a schematic view of an impingement member according to the present invention;
FIG. 6 is a schematic view of the internal structure of the impact block of the present invention;
FIG. 7 is a schematic view of a first contact structure of the present invention;
in the figure: 1. a frame; 2. a laser body; 3. a mounting groove; 4. a driving member; 401. a driving motor; 402. driving a screw rod; 403. a first threaded region; 404. a second threaded region; 5. a positioning piece; 501. a silk block; 502. a mounting plate; 503. a limit rod; 504. a limiting block; 505. an L-shaped plate; 506. an L-shaped frame; 507. an upper protrusion; 508. a lower protrusion; 509. a spring type telescopic rod; 510. a through hole; 6. an impact detection unit; 7. a toggle member; 701. a hanging frame; 702. a support frame; 703. a servo motor; 704. a rotating rod; 705. a rotating drum; 706. a circular plate; 707. a rotating shaft; 708. a return spring; 709. swing rod; 710. an outer cylinder; 711. a rotating plate; 712. a stop block; 713. a connecting rod; 714. a bump; 8. a belt body; 9. an impact member; 901. a hanging bracket; 902. a pulley; 903. an impact block; 904. a connecting block; 905. a stabilizing block; 906. a stabilizer bar; 907. a stabilizing groove; 908. a stabilizing spring; 9031. a fixing plate; 9032. a compression spring; 9033. a driving block; 9034. an impact bar; 9035. a first contact; 9036. a second contact; 9041. a housing; 9042. a support spring; 9043. a support block; 9044. and a contact.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The first embodiment, given by fig. 1-7, of the narrow linewidth fiber laser detection device of the present invention, includes a frame 1 and a laser body 2, a mounting groove 3 is formed in the frame 1, a driving member 4 is disposed in the mounting groove 3, two positioning members 5 are symmetrically disposed on the driving member 4, and the two positioning members 5 are used for positioning the laser body 2; the top of the frame 1 is also provided with an impact detection unit 6, the impact detection unit 6 is positioned above the laser body 2, and the impact detection unit 6 is used for detecting the impact of the laser body 2;
the driving piece 4 comprises a driving motor 401, the driving motor 401 is fixedly connected with the frame 1, an output shaft of the driving motor 401 is fixedly connected with a driving screw rod 402, the driving screw rod 402 is rotationally connected with the mounting groove 3, a first threaded area 403 and a second threaded area 404 are formed on the driving screw rod 402, the directions of threads of the first threaded area 403 and the second threaded area 404 are opposite, and the first threaded area 403 and the second threaded area 404 are respectively arranged in one-to-one correspondence with the two positioning pieces 5.
The locating piece 5 comprises a wire block 501, the wire block 501 is positioned in the mounting groove 3 and is in threaded connection with the driving screw rod 402, the wire block 501 is fixedly connected with the mounting plate 502, limiting rods 503 are slidably connected in two rod holes in the mounting plate 502, one ends of the two limiting rods 503 are fixedly connected with limiting blocks 504, the other ends of the two limiting rods 503 are fixedly connected with an L-shaped plate 505, the L-shaped plate 505 is hinged with an L-shaped frame 506, an upper protrusion 507 and a lower protrusion 508 are fixedly formed at the top of the L-shaped frame 506, the mounting plate 502 is hinged with the L-shaped frame 506 through a spring type telescopic rod 509, and a through hole 510 for the spring type telescopic rod 509 to pass is formed in the L-shaped plate 505;
under the state of use, driving motor 401 drives driving screw 402 and rotates, first screw thread district 403 and second screw thread district 404 on driving screw 402 drive the silk piece 501 motion in two setting element 5 respectively, two silk pieces 501 are close to each other for L shape frame 506 is close to laser instrument body 2, then under the effect of spring telescopic link 509, make down protruding 508 follow the lateral wall and fix laser instrument body 2, then L shape frame 506 can take place the rotation, make protruding 507 follow the top and fix laser instrument body 2, thereby can realize the location and the fixed process to laser instrument body 2 from different directions, it is comparatively convenient, finally carry out impact detection to laser instrument body 2 through impact detection unit 6 can.
Specifically, the impact detection unit 6 includes a striking member 7 and an impact member 9, the striking member 7 and the impact member 9 are fixedly connected through a belt body 8, and the impact member 9 is located above the laser body 2.
The toggle piece 7 comprises a hanging frame 701, the hanging frame 701 is fixedly connected with a frame 1, a supporting frame 702 is fixedly connected to the hanging frame 701, a servo motor 703 is fixedly connected to the supporting frame 702, an output shaft of the servo motor 703 is fixedly connected with a rotating rod 704, the rotating rod 704 is positioned in the rotating cylinder 705, the rotating cylinder 705 is fixedly connected with a circular plate 706, the circular plate 706 is fixedly connected with a rotating shaft 707, a reset spring 708 is sleeved on the rotating shaft 707, the reset spring 708 is positioned between the circular plate 706 and the hanging frame 701, a swinging rod 709 is fixedly connected to the end of the rotating shaft 707, an outer cylinder 710 is rotatably connected to the rotating shaft 707, the outer cylinder 710 is fixedly connected with a rotating plate 711, a stop block 712 is fixedly connected to the rotating plate 711, a connecting rod 713 is fixedly connected to the hanging frame 701, a bump 714 is fixedly connected to the connecting rod 713, and the bump 714 is correspondingly arranged with the swinging rod 709;
the shape of the rotating rod 704 is a square structure, the inner nozzle of the rotating cylinder 705 is formed into a square structure, an inclined surface is formed on the convex block 714, and the inclined surface is used for separating the swing rod 709 from the stop block 712;
under the state of use, servo motor 703 drives bull stick 704 to rotate, bull stick 704 passes through rotary drum 705 and drives plectane 706 to rotate, plectane 706 drives pendulum rod 709 through pivot 707 and rotates, pendulum rod 709 drives swivel plate 711 through dog 712 and rotates, swivel plate 711 drives impact piece 9 through belt 8 and moves, then after pendulum rod 709 is close to lug 714, under the inclined plane effect of lug 714, make pendulum rod 709 keep away from swivel plate 711, at this moment pendulum rod 709 passes through dog 712, then under reset spring 708's effect, make pendulum rod 709 move to the direction that is close to swivel plate 711, along with the rotation of pendulum rod 709, can be continuous drive impact piece 9 to laser body 2 through belt 8 and strike, realize impact detection.
Specifically, the impact piece 9 comprises a hanging bracket 901, the hanging bracket 901 is fixedly connected with the frame 1, a pulley 902 is rotationally connected to the hanging bracket 901, the top of the belt body 8 bypasses the pulley 902 and is fixedly connected with a rotating plate 711, the bottom of the belt body 8 is fixedly connected with an impact block 903, the impact block 903 is fixedly connected with a connecting block 904, the connecting block 904 is fixedly connected with a stabilizing block 905, a round hole in the stabilizing block 905 is slidably connected with a stabilizing rod 906, the stabilizing rod 906 is fixedly connected with a stabilizing groove 907 arranged in the hanging bracket 901, a stabilizing spring 908 is sleeved on the stabilizing rod 906, and the stabilizing spring 908 is positioned above the stabilizing block 905;
in the use state, the impact block 903 is driven by the belt 8 to move upwards, and then the impact block 903 impacts the laser body 2 under the action of the stabilizing spring 908 when the belt 8 moves downwards, so as to complete the impact detection process.
Further, a fixing plate 9031 is fixedly connected to the inside of the impact block 903, a compression spring 9032 is arranged below the fixing plate 9031, a driving block 9033 is arranged below the compression spring 9032, the driving block 9033 is slidably arranged in the impact block 903, and the driving block 9033 is fixedly connected with an impact rod 9034; the bottom of the fixed plate 9031 is fixedly connected with a first contact 9035, and the top of the driving block 9033 is fixedly connected with a second contact 9036 corresponding to the first contact 9035;
in the use state, the impact rod 9034 in the impact block 903 impacts the laser body 2, if the laser body 2 is intact, the impact rod 9034 is blocked by the laser body 2, the impact rod 9034 drives the driving block 9033 to move upwards and then extrudes the compression spring 9032, so that the first contact 9035 and the second contact 9036 are contacted together, and an external indicator lamp is lightened to indicate that the detection result is intact; if the laser body 2 is damaged, the impact rod 9034 enters the laser body 2, and then the first contact 9035 and the second contact 9036 are not contacted together under the elastic support of the compression spring 9032, so that an external indicator lamp is always not lightened during testing, and the damage of the detection result is indicated.
Further, the structures of the first contact 9035 and the second contact 9036 are the same; the multifunctional portable electric power tool comprises a shell 9041, wherein a supporting spring 9042 is arranged in the shell 9041, a supporting block 9043 is arranged above the supporting spring 9042, the supporting block 9043 is connected with the shell 9041 in a sliding mode, and a contact piece 9044 is fixedly connected to the supporting block 9043;
by the design, under the action of the supporting springs 9042, excessive collision between the two contact plates 9044 is avoided, and the contact plates 9044 are protected.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. The narrow-linewidth optical fiber laser detection device comprises a frame (1) and a laser body (2), and is characterized in that a mounting groove (3) is formed in the frame (1), a driving piece (4) is arranged in the mounting groove (3), two positioning pieces (5) are symmetrically arranged on the driving piece (4), the two positioning pieces (5) are used for positioning the laser body (2), the driving piece (4) comprises a driving motor (401), the driving motor (401) is fixedly connected with the frame (1), an output shaft of the driving motor (401) is fixedly connected with a driving screw rod (402), the driving screw rod (402) is rotationally connected with the mounting groove (3), a first threaded area (403) and a second threaded area (404) are formed on the driving screw rod (402), the directions of the threads of the first threaded area (403) and the second threaded area (404) are opposite, the first threaded area (403) and the second threaded area (404) are respectively correspondingly arranged with the two positioning pieces (5), the positioning pieces (5) comprise screw blocks (501) and are arranged in the mounting groove (3) and are connected with the mounting plate (502) in a sliding mode, the two threaded areas (502) are connected with the mounting plate (502) in the mounting groove (3) in a sliding mode, one end of each of the two limiting rods (503) is fixedly connected with a limiting block (504), the other end of each of the two limiting rods (503) is fixedly connected with an L-shaped plate (505), the L-shaped plates (505) are hinged with an L-shaped frame (506), an upper bulge (507) and a lower bulge (508) are fixedly formed at the top of the L-shaped frame (506), the mounting plate (502) is hinged with the L-shaped frame (506) through a spring type telescopic rod (509), and a through hole (510) for the spring type telescopic rod (509) to pass through is formed in the L-shaped plates (505); the top of frame (1) still is provided with impact detection unit (6), and impact detection unit (6) are located the top of laser instrument body (2), and impact detection unit (6) are used for the impact detection to laser instrument body (2), impact detection unit (6) are including stirring piece (7) and impact piece (9), stir and pass through area body (8) fixed connection between piece (7) and the impact piece (9), wherein impact piece (9) are located the top of laser instrument body (2), stir piece (7) including mounted frame (701), mounted frame (701) and frame (1) fixed connection, fixedly connected with support frame (702) on mounted frame (701), fixedly connected with servo motor (703) on support frame (702), the output shaft fixedly connected with bull stick (704) of servo motor (703), bull stick (704) are located the inside of bull stick (704), the shape of bull stick (704) is square structure, and the inside mouth of bull stick (705) forms square structure, is formed with inclined plane on lug (714), and inclined plane (709) are used for separating with dog (706) and reset (706) are connected with rotary shaft (707) on rotary shaft (706) fixed with rotary shaft (706), the reset spring (708) is positioned between the circular plate (706) and the hanging frame (701), the end of the rotating shaft (707) is fixedly connected with the swinging rod (709), the rotating shaft (707) is rotationally connected with the outer cylinder (710), the outer cylinder (710) is fixedly connected with the rotating plate (711), the rotating plate (711) is fixedly connected with the stop block (712), the hanging frame (701) is fixedly connected with the connecting rod (713), the connecting rod (713) is fixedly connected with the protruding block (714), the protruding block (714) and the swinging rod (709) are correspondingly arranged, the impact piece (9) comprises a hanging frame (901), the hanging frame (901) is fixedly connected with the frame (1), the hanging frame (901) is rotationally connected with the pulley (902), the top of the belt body (8) is wound around the pulley (902) and the rotating plate (711), the bottom of the belt body (8) is fixedly connected with the impact block (903), the impact block (903) is fixedly connected with the connecting block (904), the connecting block (904) is fixedly connected with the stabilizing block (905), the round hole in the stabilizing block (905) is slidingly connected with the stabilizing rod (906), the stabilizing rod (906) is fixedly connected with the stabilizing rod (908), the stabilizing rod (907) is fixedly connected with the stabilizing rod (908) in the stabilizing rod (907), the stabilizing spring (908) is located above the stabilizing block (905), a fixing plate (9031) is fixedly connected to the inside of the impact block (903), a compression spring (9032) is arranged below the fixing plate (9031), a driving block (9033) is arranged below the compression spring (9032), the driving block (9033) is arranged inside the impact block (903) in a sliding mode, and the driving block (9033) is fixedly connected with the impact rod (9034); the bottom of the fixed plate (9031) is fixedly connected with a first contact (9035), the top of the driving block (9033) is fixedly connected with a second contact (9036) corresponding to the first contact (9035), and the structures of the first contact (9035) and the second contact (9036) are the same; all include casing (9041), the inside of casing (9041) is provided with supporting spring (9042), and supporting spring (9042) top is equipped with supporting shoe (9043), supporting shoe (9043) and casing (9041) sliding connection, fixedly connected with contact (9044) on supporting shoe (9043).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310700338.7A CN116448394B (en) | 2023-06-14 | 2023-06-14 | Narrow linewidth fiber laser detection device |
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| CN202310700338.7A CN116448394B (en) | 2023-06-14 | 2023-06-14 | Narrow linewidth fiber laser detection device |
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| CN116448394B true CN116448394B (en) | 2023-08-25 |
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| CN116625624B (en) * | 2023-07-20 | 2023-11-03 | 中久光电产业有限公司 | Semiconductor laser shock resistance test device |
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