Laser test equipment and test method

Abstract

The invention relates to the technical field of laser testing, and discloses laser testing equipment and a laser testing method.The laser testing equipment comprises a testing table, a universal clamp assembly used for clamping and fixing a laser is fixedly installed on the testing table, a laser range finder is arranged on the universal clamp assembly, and a movable seat is installed on the testing table in a sliding mode; an inscribed circle which is internally tangent to the four reflecting plates can be formed through rotation of the four reflecting plates, the diameter of the inscribed circle is equal to the maximum light spot diameter of a laser beam of a qualified laser device projected to the horizontal plane where the reflecting plates are located, and when the laser beam of the laser device penetrates through the inscribed circle and does not irradiate the reflecting plates, the laser beam of the laser device is irradiated to the reflecting plates. If the laser beam is irradiated on the reflecting plate, the laser beam is qualified and does not deviate, deviation correction is needed if the laser beam is irradiated on the reflecting plate, and if the laser beam irradiation point still exists on the reflecting plate after deviation correction, the laser beam is unqualified, so that the qualified laser beam can be ensured to project the laser beam to a light spot analyzer for light spot analysis under the condition that the position does not deviate.

Description

Technical Field

[0001] The present invention relates to the technical field of laser testing, and in particular to a laser testing device and a testing method. Background Art

[0002] Laser is a device that can emit laser light. It generates a high-intensity light source with strong coherence and good directionality by exciting a specific medium. As a high-precision optical device, it needs to be strictly tested in research and development, production and even daily maintenance to ensure that its performance meets the standards. Laser testing covers many aspects, including output power / energy, wavelength and spectral characteristics, beam quality, spot shape and distribution, and extreme life test. When testing the spot morphology and distribution of the laser, a core consideration is whether the spot diameter formed by the laser projected onto the spot analyzer at different distances is within the allowable error range. Ideally, this test should be performed when the laser beam is completely perpendicular to the detection plane to ensure the accuracy and effectiveness of the measurement. However, in the actual test process, each replacement of a laser means a new clamping and fixing process, and slight changes in the clamping position or angle fine-tuning are extremely difficult to directly detect and correct by the human eye, which inevitably introduces potential measurement deviations. Even for a qualified laser, even a slight angular offset can be magnified into a significant displacement in the long-distance spot projection, causing one side of the spot to exceed the allowable error range, resulting in misjudgment and mistakenly believed to be diffraction exceeding the standard. Based on this, the present invention purposely provides a laser testing device and a testing method that can ensure that a qualified laser can project a laser beam onto a spot analyzer without position deviation. Summary of the invention

[0003] The purpose of the present invention is to provide a laser testing device and a testing method to address the deficiencies of the prior art, so as to solve the technical problem that the prior testing equipment is difficult to ensure that a qualified laser can perform spot analysis without position deviation.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A laser testing device, comprising: A test bench, on which a universal fixture assembly for clamping and fixing the laser is fixedly installed, the universal fixture assembly is provided with a laser rangefinder, a moving seat is slidably installed on the test bench, the moving seat is driven to move by a first driving source, and a spot analyzer and a fixed plate are fixedly installed on the test bench, the fixed plate is located between the spot analyzer and the laser, and a ray through hole is provided on the fixed plate, and a laser beam emitted by the laser passes through the ray through hole and irradiates the spot analyzer; A hollow disc is rotatably mounted on a fixed plate and driven to rotate by a transmission assembly. Four circumferentially arranged moving frames are slidably mounted on the hollow disc. The four moving frames are driven by a driving assembly to move synchronously. The driving assembly is connected to a laser rangefinder. Each moving frame is provided with a reflecting plate. Each reflecting plate is located in a ray through hole. When the transmission assembly drives the hollow disc to rotate ninety degrees, an inscribed circle tangent to the four reflecting plates is formed in the ray through hole. The laser rangefinder measures the distance between the spot analyzer and the laser. The driving assembly controls the four moving frames to move radially along the ray through hole so that the diameter value of the inscribed circle is equal to the standard value of the spot diameter formed by the laser beam of the laser on the horizontal plane of the reflecting plate plus the maximum allowable error value. A movable plate is arranged on a fixed plate and has four circumferentially arranged camera assemblies fixedly mounted thereon. The camera assemblies are connected to a universal clamp assembly. When the laser beam of the laser passes through the inscribed circle, the transmission assembly drives the hollow disk to rotate ninety degrees. During this process, the camera assembly continuously captures images of the reflective plates. When there are no laser beam irradiation points on the four reflective plates in the image, the laser does not need to be corrected. When there are laser beam irradiation points on the four reflective plates in the image, the camera assembly controls the laser to move in the opposite direction of the irradiation points through the universal clamp assembly to correct the laser. After the laser is corrected, the four reflective plate irradiation points in the image always exist, and the laser is unqualified.

[0005] As a further solution of the present invention: the reflecting plate is rotatably installed on the movable frame, the movable plate is slidably installed on the fixed plate, and is driven to move by the output source. When the movable plate moves, it drives the four reflecting plates to rotate synchronously through the adjusting component. When the movable plate moves to the farthest distance from the fixed plate, the diameter value of the inscribed circle is equal to the standard value of the diameter of the spot formed by the laser beam of the laser on the horizontal plane of the reflecting plate. When the movable plate moves to the closest distance to the fixed plate, the diameter value of the inscribed circle is equal to the standard value of the diameter of the spot formed by the laser beam of the laser on the horizontal plane of the reflecting plate plus the maximum allowable error value.

[0006] As a further solution of the present invention: the driving assembly includes a transmission gear, a threaded rod and a first gear ring, the four threaded rods are rotatably installed in the hollow disk, and each threaded rod is threadedly connected to a corresponding movable frame, the four transmission gears are rotatably installed on the outer wall of the hollow disk, and each transmission gear is coaxially fixedly connected to a corresponding threaded rod, a transmission gear is fixedly connected to the output shaft of the servo motor, the servo motor is connected to the laser rangefinder, and the first gear ring is rotatably installed on the outer wall of the hollow disk, and it is meshed with the four transmission gears.

[0007] As a further solution of the present invention: the transmission assembly includes a driving gear and a second gear ring, the second gear ring is fixedly mounted on the outer wall of the hollow disc, the driving gear is rotatably mounted on the fixed plate, it is meshed with the second gear ring, and it is driven to rotate by the second driving source.

[0008] As a further solution of the present invention: the adjustment component includes a rotating plate, a synchronous belt and a linkage component. The rotating plate is rotatably installed on the mobile frame, which is located outside the ray through hole and is connected to the reflective plate through a synchronous belt. When the mobile plate moves, it drives the rotating plate to rotate through the linkage component.

[0009] As a further solution of the present invention: the linkage assembly includes a translation plate, a through slot, a fixed rod, a waist-shaped slot and a spring. The translation plate is slidably installed on the movable frame, and is connected to the movable frame through a spring, and is abutted against the movable plate. The through slot is opened on the translation plate, and the waist-shaped slot is opened at one end of the rotating plate passing through the through slot. The fixed rod is fixedly installed in the through slot, and is slidably connected to the waist-shaped slot.

[0010] As a further solution of the present invention: the distance between the intersection of the rotating plate and the translation plate and the axis of the ray through hole is greater than the distance between the rotation axis of the rotating plate and the axis of the ray through hole.

[0011] A method for testing a laser testing device, the method being applied to the laser testing device as described above, the method comprising the following steps: Step S1: The laser is fixedly mounted on the universal fixture assembly, and the distance between the laser and the spot analyzer is measured by a laser rangefinder, and then the four moving frames are controlled by the driving assembly to move radially along the ray through hole, so that the diameter value of the inscribed circle is equal to the standard value of the spot diameter formed by the laser beam on the horizontal plane of the reflector plus the maximum allowable error value; Step S2: The laser is then turned on, and the laser beam emitted by it passes through the inscribed circle and the ray through hole between the four reflective plates, and finally irradiates the spot analyzer. At this time, the camera component determines whether the laser needs to be corrected by the universal fixture component; Step S3: When the laser beam of the laser passes through the inscribed circle, the transmission component drives the hollow disc to rotate ninety degrees. During this process, the camera component continuously captures the image of the reflector. When there are no laser beam irradiation points on the four reflectors in the image, the laser does not need to be corrected. When there are laser beam irradiation points on the four reflectors in the image, the camera component controls the laser to move in the opposite direction of the irradiation point through the universal clamp component to correct the laser. After the laser is corrected, the four reflector irradiation points in the image always exist, and the laser is unqualified. Step S4: Analyze and record the light spot formed by the qualified laser projected onto the light spot analyzer at the distance through the light spot analyzer; Step S5: driving the movable base to move to a different position via the first driving source, and repeating the above steps S1 to S4.

[0012] Beneficial effects of the present invention: 1. In the present invention, the laser beam will pass through the ray through hole and be projected onto the spot analyzer, and the rotation of the four reflectors in the ray through hole can form an inscribed circle inscribed with the four reflectors, and the diameter of the inscribed circle is equal to the maximum spot diameter of the laser beam of a qualified laser projected onto the horizontal plane where the reflectors are located. In this way, when the laser beam passes through the inscribed circle and does not irradiate the reflector, it means that the laser is qualified and the position is not offset, so that subsequent tests can be continued. If it is irradiated onto the reflector, correction is required. If there is still a laser beam irradiation point on the reflector after correction, it means that the laser is unqualified, thereby ensuring that the qualified laser can project the laser beam onto the spot analyzer for spot analysis without position offset; 2. In the present invention, when the distance between the laser and the spot analyzer changes, the four reflectors can move radially along the ray through hole, so that the diameter of the inscribed circle formed by the four reflectors is equal to the maximum spot diameter of the laser beam of the qualified laser projected onto the horizontal plane where the reflectors are located, thus ensuring that the four reflectors can accurately detect the laser beam at different distances of the test spot analyzer; 3. The present invention can change the diameter of the inscribed circle by rotating the reflective plate. The maximum diameter of the inscribed circle is equal to the maximum spot diameter formed by the laser beam of a qualified laser on the horizontal plane of the reflective plate, and the minimum diameter of the inscribed circle is equal to the standard spot diameter formed by the laser beam of a qualified laser on the horizontal plane of the reflective plate. If the laser beam can pass through the maximum diameter of the inscribed circle, it means that the product is qualified, and if it can further pass through the minimum diameter of the inscribed circle, it means that the product is a standard qualified product. In this way, the test results can be classified more finely. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the ray through hole in the present invention; Figure 3 It is a structural schematic diagram of the mobile seat in the present invention; Figure 4 It is a structural schematic diagram of the fixing plate in the present invention; Figure 5 The present invention Figure 4 The enlarged structural diagram of part A in the middle; Figure 6 It is a structural schematic diagram of the rotation of the hollow disc in the present invention; Figure 7 It is a structural schematic diagram of the mobile frame in the present invention; Figure 8 It is a schematic diagram of the position structure of the translation plate and the moving plate in the present invention; Fig. 9 It is a schematic diagram of the rotation of the reflector plate in the present invention; Fig.10 It is a schematic diagram of the rotation of the reflector in the present invention.

[0015] In the figure: 1. test bench; 2. universal fixture assembly; 3. laser; 4. moving seat; 5. spot analyzer; 6. fixed plate; 7. ray through hole; 8. hollow disk; 9. moving frame; 10. reflecting plate; 11. driving assembly; 12. first gear ring; 13. threaded rod; 14. transmission gear; 15. servo motor; 16. driving gear; 17. second gear ring; 18. adjusting assembly; 19. rotating plate; 20. synchronous belt; 21. linkage assembly; 22. translation plate; 23. through slot; 24. fixed rod; 25. waist-shaped slot; 26. spring; 27. moving plate; 28. camera assembly. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 10 As shown, the present invention is a laser testing device, comprising: A test bench 1, on which a universal fixture assembly 2 for clamping and fixing a laser 3 is fixedly mounted, the universal fixture assembly 2 is provided with a laser rangefinder, a moving seat 4 is slidably mounted on the test bench 1, the moving seat 4 is driven to move by a first driving source, and a spot analyzer 5 and a fixing plate 6 are fixedly mounted thereon, the fixing plate 6 is located between the spot analyzer 5 and the laser 3, and a ray through hole 7 is provided on the fixing plate 6, and the laser beam emitted by the laser 3 passes through the ray through hole 7 and irradiates the spot analyzer 5; A hollow disc 8 is rotatably mounted on a fixed plate 6 and driven to rotate by a transmission assembly. Four circumferentially arranged moving frames 9 are slidably mounted on the hollow disc 8. The four moving frames 9 are driven by a driving assembly 11 to move synchronously. The driving assembly 11 is connected to a laser rangefinder. A reflecting plate 10 is arranged on each moving frame 9. Each reflecting plate 10 is located in a ray through hole 7. When the transmission assembly drives the hollow disc 8 to rotate ninety degrees, an inscribed circle tangent to the four reflecting plates 10 is formed in the ray through hole 7. The laser rangefinder measures the distance between the spot analyzer 5 and the laser 3. The driving assembly 11 controls the four moving frames 9 to move radially along the ray through hole 7, so that the diameter value of the inscribed circle is equal to the standard value of the spot diameter formed by the laser beam of the laser 3 on the horizontal plane of the reflecting plate 10 plus the maximum allowable error value. The movable plate 27 is arranged on the fixed plate 6, and four circumferentially arranged camera assemblies 28 are fixedly mounted thereon. The camera assembly 28 is connected to the universal clamp assembly 2. When the laser beam of the laser 3 passes through the inscribed circle, the transmission assembly drives the hollow disk 8 to rotate ninety degrees. During this process, the camera assembly 28 continuously captures the image of the reflector 10. When there are no laser beam irradiation points on the four reflectors 10 in the image, the laser 3 does not need to be corrected; when there are laser beam irradiation points on the four reflectors 10 in the image, the camera assembly 28 controls the laser 3 to move in the opposite direction of the irradiation point through the universal clamp assembly 2 to correct the laser 3. After the laser 3 is corrected, the irradiation points of the four reflectors 10 in the image always exist, and the laser 3 is unqualified.

[0018] In one case of the present embodiment, the maximum spot diameter value is equal to the standard spot diameter value plus the maximum allowable error value. The first driving source can be a reciprocating cylinder, an electric telescopic rod and other components. The universal clamp assembly 2 includes a spherical connector, a clamping mechanism, an adjustment rod, etc. The reflector 10 includes a shooting head, an image processing system, a signal transmission system, etc. It should be noted that the above-mentioned components and laser rangefinder are all prior arts, and the present invention does not improve them. Therefore, there is no need to disclose their specific mechanical structure and circuit structure, which does not affect the integrity of the present invention.

[0019] The working principle of the present invention is as follows: according to the actual distance between the spot analyzer 5 and the laser 3 measured by the laser rangefinder, the maximum spot diameter of the laser beam of the qualified laser 3 projected onto the horizontal plane where the reflector 10 is located at the distance is obtained, so that the moving frame 9 is controlled to move by the driving component 11, so that the reflector 10 moves to a suitable position, such as Figure 4As shown in the figure, for example, if the laser 3 is qualified and the position is not offset at this time, the laser beam of the laser 3 will pass through the four reflective plates 10, and when the subsequent transmission component drives the hollow disk 8 to rotate ninety degrees, the laser beam in the image taken by the camera component 28 will not irradiate the reflective plate 10. During the ninety-degree rotation of the hollow disk 8, it can be regarded that an inscribed circle tangent to the four reflective plates 10 is formed in the ray through hole 7, that is, the laser beam is located in the inscribed circle. At this time, the laser beam is projected onto the spot analyzer 5, and the spot analyzer 5 can analyze and record the spot. When laser 3 is qualified but the position is offset, Figure 4 For example, if the laser 3 deviates to the left, the laser beam will exceed the inscribed circle, that is, the camera component 28 will capture the laser beam irradiation point on the left reflector 10. At this time, the camera component 28 controls the universal clamp component 2 to drive the laser 3 to rotate to the right, thereby correcting the laser 3 so that the laser beam returns to the inscribed circle. At this time, the laser beam is projected onto the spot analyzer 5, and the spot analyzer 5 can analyze and record the spot. When the laser 3 is unqualified, that is, the diffraction exceeds the standard, no matter whether the position is offset or not, there will always be a laser beam irradiating the reflector 10. In order to prevent misjudgment, after multiple corrections, it is found that the laser beam is still irradiating the reflector 10, so it is judged as unqualified.

[0020] like Figure 1-Figure 10 As shown, as a preferred embodiment of the present invention, the reflecting plate 10 is rotatably mounted on the movable frame 9, the movable plate 27 is slidably mounted on the fixed plate 6, and is driven to move by the output source. When the movable plate 27 moves, it drives the four reflecting plates 10 to rotate synchronously through the adjusting component 18. When the movable plate 27 moves to the farthest distance from the fixed plate 6, the diameter of the inscribed circle is equal to the standard spot diameter formed by the laser beam of the qualified laser 3 on the horizontal plane of the reflecting plate 10. When the movable plate 27 moves to the closest distance to the fixed plate 6, the diameter of the inscribed circle is equal to the maximum spot diameter formed by the laser beam of the qualified laser 3 on the horizontal plane of the reflecting plate 10.

[0021] In one case of this embodiment, the output source may be a reciprocating cylinder, an electric telescopic rod, or other components, or other mechanisms capable of achieving linear reciprocating motion, which is not specifically limited in this embodiment.

[0022] In practical application of this embodiment, the diameter of the inscribed circle can be changed by rotating the reflector 10. Fig.10As shown in the figure, the diameter of the inscribed circle formed by the four reflectors 10 is equal to the maximum spot diameter formed by the laser beam of the qualified laser 3 on the horizontal plane of the reflector 10, that is, the laser beam of the laser 3 can pass through the inscribed circle formed by the reflector 10 in this state and there is no irradiation point on the reflector 10, which means that the laser 3 is qualified. As the reflector 10 rotates, the diameter of the inscribed circle is equal to the standard spot diameter formed by the laser beam of the qualified laser 3 on the horizontal plane of the reflector 10. At this time, Figure 4 Taking the shown example, at this time, the camera assembly 28 is further used to capture whether there is a laser beam irradiation point on the reflective plate 10, and the laser 3 is corrected through the universal clamp assembly 2. When the laser beam of the laser 3 can pass through the inscribed circle formed by the reflective plate 10 in this state and there is no irradiation point on the reflective plate 10, it means that the laser 3 is perfectly controlled or the error is very small. Secondary classification can also reflect the respective proportions of the perfect rate, qualified rate and unqualified rate in the batch.

[0023] like Figure 3-Figure 5 As shown, as a preferred embodiment of the present invention, the driving assembly 11 includes a transmission gear 14, a threaded rod 13 and a first gear ring 12, the four threaded rods 13 are rotatably installed in the hollow disk 8, and each threaded rod 13 is threadedly connected to a corresponding movable frame 9, the four transmission gears 14 are rotatably installed on the outer wall of the hollow disk 8, and each transmission gear 14 is coaxially fixedly connected to a corresponding threaded rod 13, a transmission gear 14 is fixedly connected to the output shaft of the servo motor 15, the servo motor 15 is connected to the laser rangefinder, and the first gear ring 12 is rotatably installed on the outer wall of the hollow disk 8, and it meshes with the four transmission gears 14.

[0024] In one case of this embodiment, it should be noted that the servo motor 15 described in the present invention is a prior art, and the present invention does not improve it. Therefore, there is no need to disclose their specific mechanical structure and circuit structure, which does not affect the integrity of the present invention.

[0025] In actual application of this embodiment, each time the moving seat 4 moves, the laser rangefinder is required to re-measure the distance between the spot analyzer 5 and the laser 3, so that the servo motor 15 drives the transmission gear 14 to rotate, and the transmission gear 14 drives the threaded rod 13 to rotate, so that the moving frame 9 moves radially along the ray through hole 7 on the hollow disk 8, so that the moving distance meets the distance standard obtained by the laser rangefinder, and when one transmission gear 14 rotates, due to the meshing relationship between the transmission gear 14 and the first gear ring 12, it will drive the first gear ring 12 to rotate synchronously, and the first gear ring 12 will drive the other three transmission gears 14 to rotate synchronously, thereby making the four threaded rods 13 rotate synchronously, and controlling the four moving frames 9 to move synchronously.

[0026] like Figure 3-Figure 6As shown, as a preferred embodiment of the present invention, the transmission assembly includes a driving gear 16 and a second gear ring 17, the second gear ring 17 is fixedly mounted on the outer wall of the hollow disk 8, the driving gear 16 is rotatably mounted on the fixed plate 6, it is meshed with the second gear ring 17, and it is driven to rotate by the second driving source.

[0027] In one case of this embodiment, the second driving source may be a motor or other components, or other mechanisms capable of achieving rotational motion, which is not specifically limited in this embodiment.

[0028] In actual application of this embodiment, the second driving source drives the driving gear 16 to rotate, and the driving gear 16 can drive the hollow disk 8 to rotate through the meshing teeth with the second gear ring 17. When the hollow disk 8 rotates, an inscribed circle inscribed in the four reflecting plates 10 is formed at the edges of the four reflecting plates 10, so that the projection of the laser beam of the laser 3 on the plane of the reflecting plate 10 is detected at 360 degrees, such as Figure 4 and Figure 6 As shown in the example, Figure 6 The reflector 10 in the image processing apparatus can detect whether the laser 3 is offset in an oblique direction.

[0029] like Figure 7-Figure 9 As shown, as a preferred embodiment of the present invention, the adjustment component 18 includes a rotating plate 19, a synchronous belt 20 and a linkage component 21. The rotating plate 19 is rotatably installed on the movable frame 9, which is located outside the ray through hole 7, and is transmission-connected to the reflecting plate 10 through the synchronous belt 20. When the movable plate 27 moves, it drives the rotating plate 19 to rotate through the linkage component 21.

[0030] In actual application of this embodiment, when the rotating plate 19 rotates, it will drive the reflecting plate 10 to rotate synchronously through the synchronous belt 20, and the rotating plate 19 is located outside the ray through hole 7, which avoids the situation where the component driving the reflecting plate 10 to rotate blocks the laser beam in the ray through hole 7, resulting in the laser beam cannot be accurately projected onto the spot analyzer 5.

[0031] like Figure 7-Figure 9 As shown, as a preferred embodiment of the present invention, the linkage assembly 21 includes a translation plate 22, a through slot 23, a fixed rod 24, a waist-shaped slot 25 and a spring 26. The translation plate 22 is slidably installed on the moving frame 9, and is connected to the moving frame 9 through the spring 26, and is abutted against the moving plate 27. The through slot 23 is opened on the translation plate 22, and the waist-shaped slot 25 is opened at one end of the rotating plate 19 passing through the through slot 23. The fixed rod 24 is fixedly installed in the through slot 23, and is slidably connected with the waist-shaped slot 25.

[0032] In actual application of this embodiment, due to the elastic force of the spring 26, the translation plate 22 will move away from the moving frame 9 and abut against the moving plate 27. When the moving plate 27 moves away from the moving frame 9, the translation plate 22 moves away from the moving frame 9. Figure 7 Taking the example shown in the figure, the reflective plate 10 is in a vertical state at this time, and when the movable plate 27 approaches the movable frame 9, it will push the translation plate 22 to move toward the movable frame 9, and the fixed rod 24 in the through groove 23 will slide in the waist-shaped groove 25 on the rotating plate 19, thereby driving the rotating plate 19 to rotate in the through groove 23, thereby driving the reflective plate 10 to rotate the angle, and the movement of the movable plate 27 simultaneously drives all the translation plates 22 to move synchronously, so the angle changes of the four reflective plates 10 also occur simultaneously.

[0033] like Figure 3-Figure 10 As shown, as a preferred embodiment of the present invention, the distance between the intersection of the rotating plate 19 and the translation plate 22 and the axis of the ray through hole 7 is greater than the distance between the rotation axis of the rotating plate 19 and the axis of the ray through hole 7.

[0034] In actual application, by limiting the distance between the intersection of the rotating plate 19 and the translation plate 22 and the axis of the ray through hole 7 to be greater than the distance between the rotation axis of the rotating plate 19 and the axis of the ray through hole 7, it can be ensured that the rotation direction of the rotating plate 19 and the reflecting plate 10 is toward the camera assembly 28, that is, the reflecting plate 10 is rotated toward the camera assembly 28, which is more conducive to the camera assembly 28 to capture a clear image on the reflecting plate 10.

[0035] See also Figure 1-Figure 10 As shown, the present invention is a test method for a laser test device, the method is applied to a laser test device as described in the above embodiment, and the method comprises the following steps: Step S1: The laser 3 is fixedly mounted on the universal fixture assembly 2, and the distance between the laser 3 and the spot analyzer 5 is measured by a laser rangefinder, and then the four moving frames 9 are controlled by the driving assembly 11 to move radially along the ray through hole 7, so that the diameter value of the inscribed circle is equal to the standard value of the spot diameter formed by the laser beam of the laser 3 on the horizontal plane of the reflector 10 plus the maximum allowable error value; Step S2: Then the laser 3 is turned on, and the laser beam emitted by it passes through the inscribed circle between the four reflective plates 10 and the ray through hole 7, and finally irradiates the spot analyzer 5. At this time, the camera assembly 28 determines whether it is necessary to correct the laser 3 through the universal fixture assembly 2; Step S3: When the laser beam of the laser 3 passes through the inscribed circle, the transmission assembly drives the hollow disc 8 to rotate ninety degrees. During this process, the camera assembly 28 continuously captures the image of the reflector 10. When there are no laser beam irradiation points on the four reflectors 10 in the image, the laser 3 does not need to be corrected. When there are laser beam irradiation points on the four reflectors 10 in the image, the camera assembly 28 controls the laser 3 to move in the opposite direction of the irradiation point through the universal clamp assembly 2 to correct the laser 3. After the laser 3 is corrected, the irradiation points of the four reflectors 10 in the image always exist, and the laser 3 is unqualified. Step S4: analyzing and recording the light spot formed by the qualified laser 3 projected onto the light spot analyzer 5 at the distance through the light spot analyzer 5; Step S5: Drive the movable base 4 to move to a different position by the first driving source, and repeat the above steps S1 to S4.

[0036] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A laser testing device, characterized in that: include: A test bench (1) is fixedly mounted with a universal fixture assembly (2) for clamping and fixing a laser (3), the universal fixture assembly (2) being provided with a laser rangefinder, a movable seat (4) being slidably mounted on the test bench (1), the movable seat (4) being driven to move by a first driving source, and a light spot analyzer (5) and a fixed plate (6) being fixedly mounted on the movable seat, the fixed plate (6) being located between the light spot analyzer (5) and the laser (3), the fixed plate (6) being provided with a ray through hole (7), and a laser beam emitted by the laser (3) passing through the ray through hole (7) and irradiating the light spot analyzer (5); A hollow disk (8) is rotatably mounted on a fixed plate (6) and driven to rotate by a transmission assembly. Four circumferentially arranged moving frames (9) are slidably mounted on the hollow disk (8). The four moving frames (9) are driven by a driving assembly (11) to move synchronously. The driving assembly (11) is connected to a laser rangefinder. Each moving frame (9) is provided with a reflecting plate (10). Each reflecting plate (10) is located in a ray through hole (7). When the transmission assembly drives the hollow disk (8) to rotate ninety degrees, an inscribed circle tangent to the four reflecting plates (10) is formed in the ray through hole (7). The laser rangefinder measures the distance between the spot analyzer (5) and the laser (3). The driving assembly (11) controls the four moving frames (9) to move radially along the ray through hole (7) so that the diameter value of the inscribed circle is equal to the standard value of the spot diameter formed by the laser beam of the laser (3) on the horizontal plane of the reflecting plate (10) plus the maximum allowable error value. The movable plate (27) is arranged on the fixed plate (6) and has four circumferentially arranged camera assemblies (28) fixedly mounted thereon. The camera assemblies (28) are connected to the universal clamp assembly (2). When the laser beam of the laser (3) passes through the inscribed circle, the transmission assembly drives the hollow disk (8) to rotate ninety degrees. During this process, the camera assembly (28) continuously captures the image of the reflector (10). When there are no laser beam irradiation points on the four reflector plates (10) in the image, the laser (3) does not need to be corrected. When there are laser beam irradiation points on the four reflector plates (10) in the image, the camera assembly (28) controls the laser (3) to move in the opposite direction of the irradiation points through the universal clamp assembly (2) to correct the laser (3). When the irradiation points of the four reflector plates (10) are always present in the image after the laser (3) is corrected, the laser (3) is unqualified.

2. A laser testing device according to claim 1, characterized in that: The reflecting plate (10) is rotatably mounted on the moving frame (9), and the moving plate (27) is slidably mounted on the fixed plate (6) and is driven to move by an output source. When the moving plate (27) moves, it drives the four reflecting plates (10) to rotate synchronously through the adjusting component (18). When the moving plate (27) moves to the farthest distance from the fixed plate (6), the diameter value of the inscribed circle is equal to the standard value of the diameter of the spot formed by the laser beam of the laser (3) on the horizontal plane of the reflecting plate (10). When the moving plate (27) moves to the closest distance from the fixed plate (6), the diameter value of the inscribed circle is equal to the standard value of the diameter of the spot formed by the laser beam of the laser (3) on the horizontal plane of the reflecting plate (10) plus the maximum allowable error value.

3. The laser testing device according to claim 1, characterized in that: The driving assembly (11) comprises a transmission gear (14), a threaded rod (13) and a first gear ring (12); the four threaded rods (13) are all rotatably mounted in the hollow disk (8), and each threaded rod (13) is threadedly connected to a corresponding moving frame (9); the four transmission gears (14) are all rotatably mounted on the outer wall of the hollow disk (8), and each transmission gear (14) is coaxially fixedly connected to a corresponding threaded rod (13); one transmission gear (14) is fixedly connected to an output shaft of a servo motor (15), and the servo motor (15) is connected to a laser rangefinder; the first gear ring (12) is rotatably mounted on the outer wall of the hollow disk (8), and is meshed with the four transmission gears (14).

4. The laser testing device according to claim 1, characterized in that: The transmission assembly comprises a driving gear (16) and a second gear ring (17); the second gear ring (17) is fixedly mounted on the outer wall of the hollow disc (8); the driving gear (16) is rotatably mounted on the fixed plate (6), meshing with the second gear ring (17), and driven to rotate by a second driving source.

5. The laser testing device according to claim 2, characterized in that: The adjustment assembly (18) comprises a rotating plate (19), a synchronous belt (20) and a linkage assembly (21). The rotating plate (19) is rotatably mounted on the movable frame (9), is located outside the ray through hole (7), and is transmission-connected to the reflective plate (10) via the synchronous belt (20). When the movable plate (27) moves, it drives the rotating plate (19) to rotate via the linkage assembly (21).

6. The laser testing device according to claim 5, characterized in that: The linkage assembly (21) comprises a translation plate (22), a through slot (23), a fixing rod (24), a waist-shaped slot (25) and a spring (26). The translation plate (22) is slidably mounted on the moving frame (9), is connected to the moving frame (9) via the spring (26), and is in contact with the moving plate (27). The through slot (23) is formed on the translation plate (22), the waist-shaped slot (25) is formed at one end of the rotating plate (19) passing through the through slot (23), and the fixing rod (24) is fixedly mounted in the through slot (23) and is slidably connected to the waist-shaped slot (25).

7. The laser testing device according to claim 6, characterized in that: The distance between the intersection of the rotating plate (19) and the translation plate (22) and the axis of the ray through hole (7) is greater than the distance between the rotation axis of the rotating plate (19) and the axis of the ray through hole (7).

8. A method for testing a laser testing device, characterized in that: The method is applied to a laser testing device as described in any one of claims 1 to 7, and the method comprises the following steps: Step S1: The laser (3) is fixedly mounted on the universal fixture assembly (2), and the distance between the laser (3) and the spot analyzer (5) is measured by a laser rangefinder, and then the four moving frames (9) are controlled by the driving assembly (11) to move radially along the ray through hole (7) so that the diameter value of the inscribed circle is equal to the standard value of the spot diameter formed by the laser beam of the laser (3) on the horizontal plane of the reflector (10) plus the maximum allowable error value; Step S2: The laser (3) is then turned on, and the laser beam emitted by it passes through the inscribed circle between the four reflective plates (10) and the ray through hole (7), and finally irradiates the spot analyzer (5). At this time, the camera component (28) determines whether it is necessary to correct the laser (3) through the universal clamp component (2); Step S3: When the laser beam of the laser (3) passes through the inscribed circle, the transmission component drives the hollow disc (8) to rotate ninety degrees. During this process, the camera component (28) continuously captures the image of the reflector (10). When there are no laser beam irradiation points on the four reflectors (10) in the image, the laser (3) does not need to be corrected. When there are laser beam irradiation points on the four reflectors (10) in the image, the camera component (28) controls the laser (3) to move in the opposite direction of the irradiation points through the universal clamp component (2) to correct the laser (3). When the laser (3) is corrected, the irradiation points of the four reflectors (10) in the image are always present, and the laser (3) is unqualified. Step S4: using the light spot analyzer (5) to analyze and record the light spot formed by the qualified laser (3) projected onto the light spot analyzer (5) at the distance; Step S5: driving the movable seat (4) to move to a different position via the first driving source, and repeating the above steps S1 to S4.

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