CN116381655A

CN116381655A - Detection device

Info

Publication number: CN116381655A
Application number: CN202310427294.5A
Authority: CN
Inventors: 陈良兴; 夏平; 姚永亿
Original assignee: Shenzhen Litra Technology Ltd
Current assignee: Shenzhen Litra Technology Ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-07-04

Abstract

The application is applicable to the laser radar technical field, proposes a detection equipment for detect optical receiving module, optical receiving module includes the PCB board, locates the optical signal sensor on the PCB board, and connect in the lens subassembly of PCB board, detection equipment includes: a base; the first bearing platform is arranged on the base and is detachably connected with the prism; the collimator is arranged at one side of the first bearing platform; the first camera is arranged on one side of the prism; the optical path placing plate is arranged on the first bearing platform and is used for installing the optical receiving module and the laser component, the lens component is connected to the PCB and arranged between the PCB and the collimator, and the optical signal sensor is arranged on one side of the PCB facing the lens component; according to the method, the laser reflected back is simulated and captured through the camera, so that the yield can be conveniently determined by workers, the production reliability is improved, and the working efficiency is improved.

Description

Detection device

Technical Field

The application relates to the technical field of laser radars, in particular to detection equipment.

Background

The laser radar consists of a laser emitting module, an optical receiving module, a motor assembly module, an information processing system and the like, wherein the optical receiving module mainly consists of a receiving lens and an APD plate, is the most critical part for gathering, receiving and processing reflected laser signals, and the APD plate comprises an APD patch sensor and other circuit components, and the APD patch sensor is an element for receiving optical signals.

The optical receiving module is easy to cause the problems of poor signal reception and the like of a laser radar finished product due to the problems of part difference and assembly difference of receiving lenses, assembly error of a patch sensor on an APD plate and the like. At present, only after the whole laser radar is assembled, the problem of poor reception of the optical receiving module of the laser radar can be found through a testing means, so that the production reliability, stability and production efficiency of the whole laser radar are low.

Disclosure of Invention

To the above-mentioned problem, the present application provides a check out test set, has solved at least that present optical receiving module can't independently detect the problem of assembly error.

The embodiment of the application provides a check out test set for detect optical receiving module, optical receiving module includes the PCB board, locates optical signal sensor on the PCB board, and connect in the lens subassembly of PCB board, check out test set includes:

a base;

the first bearing platform is arranged on the base and is detachably connected with a prism;

the collimator is arranged at one side of the first bearing platform;

the first camera is arranged on one side of the prism;

the optical path placing plate is arranged on the first bearing platform and used for installing the optical receiving module and the laser component, the lens component is arranged between the PCB and the collimator, and the optical signal sensor is arranged on one side of the PCB facing the lens component;

the laser beam emitted by the laser component can be reflected by the collimator to form an emergent beam, the emergent beam is a parallel beam, the emergent beam is refracted by the lens component after passing through the prism to obtain a focused beam, the focused beam is emitted to the optical signal sensor and reflected by the optical signal sensor to obtain a first reflected beam, the first reflected beam is reflected by the prism to form a second reflected beam after passing through the lens component, and the second reflected beam is emitted into the first camera.

In an embodiment, the light path placing plate and the collimator are respectively disposed at two opposite sides of the prism, and the first camera, the light path placing plate and the collimator are respectively disposed at different sides of the prism.

In an embodiment, the laser assembly includes a laser light source detachably connected to the light path placing plate and a first collimator, and the laser beam emitted by the laser light source is parallel to the laser beam after being arranged by the first collimator.

In one embodiment, the lens assembly comprises a focusing lens and a second collimator, and the focusing lens is arranged on the light path placing plate;

the second collimator is arranged on the focusing lens, the optical axis of the second collimator coincides with the optical axis of the focusing lens, and the first reflected light beam is emitted to the prism through the second collimator.

In an embodiment, the detection device further includes a vertical adjustment assembly, where the vertical adjustment assembly is disposed on the first bearing platform and connected to the light path placing plate, and the vertical adjustment assembly is configured to drive the light path placing plate to move along a first direction;

the first direction is a direction perpendicular to an optical axis of the collimator.

In an embodiment, the detection device further includes a multi-directional adjustment assembly, where the multi-directional adjustment assembly is disposed on the base and connected to the first bearing platform, and the multi-directional adjustment assembly is configured to drive the first bearing platform to move along a first direction, a second direction, and a third direction;

the first direction is a direction perpendicular to the optical axis of the collimator, the second direction is a direction parallel to the optical axis of the collimator, and the third direction is perpendicular to the first direction and the second direction.

In an embodiment, the multi-directional adjustment assembly includes a first adjustment structure, a second load-bearing platform, and a third adjustment structure;

the first adjusting structure is arranged on the base and connected with the second adjusting structure, and the first adjusting structure is used for driving the second adjusting structure to move along the second direction;

the second adjusting structure is used for driving the second bearing platform to move along the first direction;

the second bearing platform is used for bearing the third adjusting structure and can rotate around the first direction relative to the base;

the third adjusting structure is connected with the first bearing platform and is used for driving the first bearing platform to move along a third direction.

In an embodiment, the detection device further includes a rotation adjustment assembly, where the rotation adjustment assembly is disposed on the second bearing platform and connected to the first camera, and the rotation adjustment assembly is configured to drive the first camera to rotate around the first direction relative to the second bearing platform.

In an embodiment, the detection device further includes a light supplementing light source, where the light supplementing light source is disposed on the first bearing platform and is located at a side of the prism away from the first camera.

In an embodiment, the collimator includes a light-emitting end and a calibration end that are disposed opposite to each other, the light-emitting end faces the first bearing platform, the laser beam is incident into the collimator through the light-emitting end, and the outgoing beam is emitted from the light-emitting end; the calibrating end is provided with a calibrating ruler, and the calibrating ruler is provided with a midpoint positioned on the optical axis of the collimator;

the detection device further comprises a second camera, wherein the second camera is arranged opposite to the calibration end;

the light path placing plate is provided with a first position and a second position which is different from the first position in a first direction, the laser beam can be injected into the second camera along the optical axis of the collimator and pass through the midpoint when the light path placing plate is positioned at the first position, and the laser beam can be reflected by the collimator to form the emergent beam when the light path placing plate is positioned at the second position.

The method aims at solving the problem that the existing optical receiving module cannot independently detect assembly errors, the outgoing beam formed by the laser component and the collimator simulates laser reflected from a target, the laser is converged on the optical signal sensor of the PCB through the lens component, the light reflected by the optical signal sensor is reflected through the prism so as to be captured by the first camera, and a worker can confirm the position of the outgoing beam on the PCB by observing the image captured by the first camera, so that whether the position of the optical signal sensor or the receiving lens component has assembly errors or not is determined, and the yield is determined, and whether the optical detecting module has the problem of poor receiving or not is determined;

the optical receiving module is simple in structure, the lasers reflected back through simulation are captured through the camera, the yield of the optical receiving module can be conveniently determined by workers, the production reliability is improved, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a detection apparatus according to an embodiment of the present application.

Fig. 2 is a schematic front view of the detection apparatus shown in fig. 1.

Fig. 3 is a schematic perspective view of a first carrying platform and related structures in the inspection apparatus shown in fig. 1.

Fig. 4 is a schematic view of an optical path of the detection apparatus shown in fig. 1 during a detection process.

Fig. 5 is a schematic front view of the first carrying platform, the optical path placing plate and the prism in the detection apparatus shown in fig. 1.

Fig. 6 is a schematic top view of the first carrying platform, the light path placing plate and the prism in the inspection apparatus shown in fig. 1.

Fig. 7 is a schematic perspective sectional view taken along line A-A in fig. 6.

Fig. 8 is a flow chart of a detection method according to another embodiment of the present application.

The meaning of the labels in the figures is:

100. a detection device;

10. a base;

20. a first load-bearing platform; 21. a prism;

30. a collimator;

301. a light outlet end; 302. a calibration end; 3021. calibrating a ruler;

401. a first camera; 402. a second camera;

50. an optical path placing plate; 51. a PCB board; 511. an optical signal sensor; 52. a lens assembly; 521. a focusing lens; 522. a second collimator; 53. a laser assembly; 531. a laser light source; 532. a first collimator;

60. a vertical adjustment assembly;

70. a multi-directional adjustment assembly; 71. a first adjustment structure; 72. a second adjustment structure; 73. the second bearing platform; 74. a third adjustment structure;

80. a swivel adjustment assembly;

90. a light supplementing light source;

l1, laser beam; l2, emitting light beams; l3, focusing the light beam; l4, a first reflected light beam; l5, second reflected light beam.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings, i.e. embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper," "lower," "left," "right," and the like are used for convenience of description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements in question must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting of the patent. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.

It should be further noted that, in the embodiments of the present application, the same reference numerals denote the same components or the same parts, and for the same parts in the embodiments of the present application, reference numerals may be given to only one of the parts or the parts in the drawings by way of example, and it should be understood that, for other same parts or parts, the reference numerals are equally applicable.

The optical receiving module is easy to cause the problems of poor signal receiving and the like of a finished product of the laser radar due to the problems of part difference and assembly difference of receiving lenses, assembly error of a patch sensor on an APD plate and the like, and the problem of poor receiving of the optical receiving module of the laser radar can be discovered only by a test method after the whole laser radar is assembled, so that the production reliability, stability and production efficiency of the whole laser radar are affected.

According to a large number of experiments, the spot position of the laser reflected back from the target on the APD plate is a factor directly influencing the function of the laser radar optical receiving module, but currently, a worker cannot check the exact position of the laser reflected back from the target on the APD plate, so that the yield of the APD plate cannot be determined.

Therefore, the application provides detection equipment and detection method, the reflected laser is simulated and captured through the camera, so that a worker can conveniently determine the position of the reflected laser spot on the PCB, and whether the optical receiving module has a problem of poor receiving is conveniently determined.

For the purpose of illustrating the technical solutions described in this application, reference is made to the following description taken in conjunction with the accompanying drawings and examples.

Referring to fig. 1 and 2, an embodiment of the first aspect of the present application provides a detection apparatus 100 for detecting an optical receiving module, the detection apparatus 100 including a base 10, a first carrying platform 20, a collimator 30, a first camera 401, and an optical path placing plate 50.

The base 10 is used for providing a fixed foundation for the first carrying platform 20 and the parallel light pipe 30, and the base 10 may be a single workpiece in a plate shape, a block shape, a strip shape or other shapes, or may be a casing, a working table surface, etc. of other devices, that is, the detection device 100 provided in this embodiment may be an independent device, or may be used with a test stand or other devices.

The collimator 30 is disposed on the base 10, and the collimator 30 is used for generating an outgoing light beam L2, where the outgoing light beam L2 is a parallel light beam, so as to reduce divergence and attenuation during the propagation process.

Referring to fig. 2 and 3, the first carrying platform 20 is disposed on the base 10, and the first carrying platform 20 is used for providing a fixed foundation for the light path placing plate 50; the first bearing platform 20 is provided with the prism 21, the prism 21 is detachably connected to the first bearing platform 20, the detachable connection mode can be realized through a buckle, a clamping groove or other structures, and the prism 21 can also be directly placed on the first bearing platform 20.

The first camera 401 is disposed at one side of the prism 21, and since the prism 21 is used to receive the light beam emitted from the collimator 30, the first camera 401 should not be disposed between the prism 21 and the collimator 30; the first camera 401 may be disposed on the first carrying platform 20, or may be disposed on the base 10 and supported by a bracket.

The optical path placing plate 50 is arranged on the first bearing platform 20, the optical path placing plate 50 is used for installing an optical receiving module and a laser component 53, wherein the optical receiving module comprises a PCB (printed circuit board) 51 and a lens component 52, the lens component 52 is connected to the PCB 51, namely the lens component 52 and the PCB 51 jointly form the optical receiving module, an optical signal sensor 511 is arranged on the PCB 51, and a light beam emitted from the collimator 30 falls on the optical signal sensor 511 and is reflected by the optical signal sensor 511; the lens assembly 52 is used to refract the light beam emitted from the collimator 30 and to concentrate the light beam to the optical signal sensor 511, so that the optical signal sensor 511 can reflect the light beam; the laser assembly 53 is for emitting a laser beam L1 and emitting the laser beam L1 to the collimator 30.

Referring to fig. 4, the optical path of the detection apparatus 100 in this embodiment is: the laser component 53 emits the laser beam L1, after the laser beam L1 is emitted into the collimator 30, the collimator 30 emits an outgoing beam L2, the outgoing beam L2 passes through the prism 21 and is emitted to the lens component 52, the outgoing beam L2 is refracted by the lens component 52 to form a focused beam L3 converging toward the optical axis direction of the lens component 52, the focused beam L3 is emitted to the optical signal sensor 511 and is reflected to form a first reflected beam L4, the first reflected beam L4 is emitted to the prism 21, the first reflected beam L4 is reflected by the prism 21 to form a second reflected beam L5 and is emitted to the first camera 401, the operator can determine whether the optical receiving module is qualified through the spot position of the second reflected beam L5 captured by the first camera 401, specifically, if the spot position of the second reflected beam L5 is within the qualified range, that is the optical receiving module is qualified, if the spot position of the second reflected beam L5 is deviated from the qualified range, it is indicated that the lens component 52 or the optical signal sensor 511 has a position deviation, and then the position of the lens component 52 needs to be detected again.

Wherein the operator can determine the position of the light spot and whether the position range of the light spot deviates from the acceptable range by a computer connected to the first camera 401.

According to the optical path of the present embodiment, when the outgoing beam L2 passes through the prism 21, the prism 21 does not refract or reflect the outgoing beam L2, and when the first reflected beam L4 is directed to the prism 21, the prism 21 reflects the first reflected beam L4 and forms the second reflected beam L5, i.e. the prism 21 has the capability of transmitting light in one direction and reflecting light in the other direction, so the prism 21 is a unidirectional prism 21 or a planar lens with a unidirectional film.

It can be understood that the first carrying platform 20 may be fixedly connected to the base 10, or may be movably connected to the base 10, when the first carrying platform 20 is fixedly connected to the base 10, the position of the first carrying platform 20 needs to be determined according to the position of the collimator 30, so as to ensure that the light emitted by the laser component 53 can be emitted into the collimator 30 and the light emitted by the collimator 30 can be emitted into the prism 21, and at this time, the first carrying platform 20 does not have an adjusting capability, and the detecting device 100 can only detect an optical receiving module of a certain fixed model; when the first carrying platform 20 is movably connected to the base 10, the position of the first carrying platform 20 can be adjusted, and the detecting device 100 can detect different types of optical receiving modules.

It can be understood that the light source of the collimator 30 in this embodiment is the laser component 53, specifically, the light beam emitted into the collimator 30 by the laser component 53 is reflected in the collimator 30 and processed by the collimator 30 to obtain the collimated light.

In this embodiment, the outgoing light beam L2 formed by the laser component 53 and the collimator 30 simulates the laser reflected from the target of the laser radar, the laser is converged on the optical signal sensor 511 of the PCB board 51 by the lens component 52, the light reflected by the optical signal sensor 511 is reflected by the prism 21, so that the first camera 401 is captured, a worker can confirm the position of the optical signal sensor 511 or whether the assembly error exists in the receiving lens component 52 by observing the image captured by the first camera 401, so as to determine whether the optical receiving module is qualified, and compared with the current method that only the optical receiving module can detect the performance of the laser radar after being mounted on the laser radar, the detection device 100 provided in this embodiment can independently detect the optical receiving module, thereby improving the working efficiency and the production reliability and stability of the finished product of the laser radar.

According to the optical path of the present embodiment, in some embodiments, the optical axes of the laser assembly 53, the lens assembly 52, and the parallel light pipe 30 are in the same vertical plane to enable the detection apparatus 100 to have higher accuracy.

According to the optical path of the present embodiment, in some embodiments, the optical path placing plate 50 and the collimator 30 are respectively located at opposite sides of the prism 21 so that the laser beam L1 emitted from the laser assembly 53 can be incident on the collimator 30 and the outgoing beam L2 emitted from the collimator 30 can be incident on the lens assembly 52; the first camera 401, the light path placing plate 50 and the collimator 30 are disposed on different sides of the prism 21, i.e. the first camera 401, the light path placing plate 50 and the collimator 30 are disposed on different sides of the prism 21, respectively, so as to avoid the first camera 401 interfering with the transmission of the laser beam L1 and the outgoing beam L2, and simultaneously enable the first camera 401 to capture the second reflected beam L5.

Referring to fig. 5 to 7, in an embodiment, the laser assembly 53 includes a laser light source 531 and a first collimator 532, the first collimator 532 is detachably connected to the optical path placing plate 50, and the laser light source 531 may be connected to the first collimator 532 or may be detachably connected to the optical path placing plate 50.

The light beam emitted by the laser light source 531 is collimated by the first collimator 532 to form a laser beam L1, and the laser beam L1 is directed to the collimator 30, where the laser beam L1 is a parallel beam; the first collimator 532 is disposed such that the laser beam L1 emitted from the laser assembly 53 has a low divergence, thereby reducing attenuation of the laser beam L1 incident into the collimator 30.

It can be appreciated that the optical axis of the laser light source 531 emitting the laser beam L1 coincides with the optical axis of the first collimator 532 to improve the light efficiency.

Referring to fig. 5 to 7, in an embodiment, the lens assembly 52 includes a focusing lens 521 and a second collimator 522, the focusing lens 521 is disposed on the optical path placing plate 50, and the focusing lens 521 may be a convex lens, a plano-convex lens or other various focusing lenses, and the focusing lens 521 functions to refract the outgoing light beam L2 into a focused light beam L3 converging toward the optical axis direction of the focusing lens 521, so that the focused light beam L3 can be precisely directed toward the PCB board 51.

The second collimator 522 is disposed on the focusing lens 521, and an optical axis of the second collimator 522 is coincident with an optical axis of the focusing lens 521, so that the second collimator 522 is opposite to the optical signal sensor 511, and the first reflected light beam L4 is directed to the prism 21 through the second collimator 522, that is, the second collimator 522 functions to refract the first reflected light beam L4 into a parallel light beam, so as to reduce the divergence of the first reflected light beam L4 and reduce the attenuation of the first reflected light beam L4 in the process of being directed to the prism 21.

Referring to fig. 3, in an embodiment, the detecting apparatus 100 further includes a vertical adjustment assembly 60, the vertical adjustment assembly 60 is disposed on the first carrying platform 20, and the vertical adjustment assembly 60 is connected to the light path placing plate 50, and the vertical adjustment assembly 60 is used for driving the light path placing plate 50 to move along a first direction relative to the first carrying platform 20, where the first direction is a direction perpendicular to an optical axis of the collimator 30, referring to fig. 3, and the first direction is a direction in which the Z axis in fig. 3 is located.

The vertical adjustment assembly 60 is used for adjusting the position of the light path placing plate 50, so that the laser beam L1 emitted by the laser assembly 53 can be emitted into the collimator 30 when the detection device 100 detects different types of PCB boards 51, and the outgoing beam L2 emitted by the collimator 30 can be emitted into the prism 21.

The vertical adjustment assembly 60 may be a pneumatic cylinder, hydraulic cylinder, or other linear feed member, and the vertical adjustment assembly 60 may also be a ball screw, rack and pinion, or other linear feed structure.

Referring to fig. 3, in an embodiment, the detection apparatus 100 further includes a multi-directional adjusting assembly 70, where the multi-directional adjusting assembly 70 is disposed on the base 10 and is connected to the first carrying platform 20, specifically, one end of the multi-directional adjusting assembly 70 is disposed on the base 10 and the other end of the multi-directional adjusting assembly is connected to the first carrying platform 20, and the multi-directional adjusting assembly 70 is configured to drive the first carrying platform 20 to move along a first direction, a second direction and a third direction relative to the base 10, where the first direction is a direction perpendicular to an optical axis of the collimator 30, i.e., the first direction is a direction along a Z-axis in fig. 3, the second direction is a direction parallel to the optical axis of the collimator 30, i.e., the second direction is a direction along an X-axis in fig. 3, and the third direction is a direction perpendicular to the first direction and the second direction, i.e., the third direction is a direction along a Y-axis in fig. 3.

The multi-directional adjusting assembly 70 is used for adjusting the position of the first carrying platform 20, specifically, the movement of the first carrying platform 20 along the first direction can adjust the height of the light path placing plate 50, because the vertical adjusting assembly 60 is arranged on the first carrying platform 20, the multi-directional adjusting assembly 70 drives the movement of the first carrying platform 20 along the first direction to coarsely adjust the height of the light path placing plate 50, and the vertical adjusting assembly 60 is used for finely adjusting the height of the light path placing plate 50; the movement of the first carrying platform 20 in the second direction can adjust the distance between the first carrying platform and the collimator 30; the movement of the first carriage 20 in the third direction can make the optical axis of the collimator 30, the optical axis of the lens assembly 52, the optical axis of the laser assembly 53, and the optical signal sensor 511 all lie in the same vertical plane.

The multi-directional adjustment assembly 70 may be a multi-axis robotic arm, or a combination of multiple differently oriented telescopic cylinders or other linear feed members or linear feed structures.

Referring to fig. 3, in some embodiments, the multi-directional adjustment assembly 70 includes a first adjustment structure 71, a second adjustment structure 72, a second load-bearing platform 73, and a third adjustment structure 74; the first adjusting structure 71 is disposed on the base 10 and connected to the second adjusting structure 72, and the first adjusting structure 71 is configured to drive the second adjusting structure 72 to move along the second direction; the second adjusting structure 72 is connected to the second carrying platform 73, and the second adjusting structure 72 is configured to drive the second carrying platform 73 to move along the first direction; the second carrying platform 73 is configured to carry the third adjusting structure 74, and the second carrying platform 73 can rotate around the first direction relative to the base 10, that is, the second carrying platform 73 extends along the first direction relative to the rotating shaft of the base 10; the third adjusting structure 74 is connected to the first carrying platform 20, and the third adjusting structure 74 is configured to drive the first carrying platform 20 to move along a third direction.

The first adjusting structure 71 is configured to drive the second adjusting structure 72 to move along a second direction, for example, the first adjusting structure 71 includes a sliding rail provided on the base 10 and a sliding block slidably connected to the sliding rail, the sliding rail extends along the second direction, the sliding block can slide along the sliding rail, and the second adjusting structure 72 is provided on the sliding block; for another example, the first adjusting structure 71 includes a screw provided on the base 10 and a nut fitted on the screw, the screw extending in the second direction, the nut being capable of moving along the screw, the second adjusting structure 72 being provided on the nut; the first adjustment structure 71 may also be a pneumatic cylinder, hydraulic cylinder or other structure provided on the base 10.

The second adjusting structure 72 is configured to drive the second bearing platform 73 to move along a first direction, for example, the second adjusting structure 72 is a scissor lifting structure, and specifically includes two swing arms, one end of one swing arm is hinged to the first adjusting structure 71, the other end of the other swing arm is slidably connected to the second bearing platform 73, one end of the other swing arm is slidably connected to the first adjusting structure 71, the other end of the other swing arm is hinged to the second bearing platform 73, meanwhile, the middle parts of the two swing arms are hinged to each other, the second bearing platform 73 can move in a direction away from the first adjusting structure 71 along with the movement of one end of the one swing arm toward the one end of the other swing arm, and the second bearing platform 73 can move in a direction toward the first adjusting structure 71 along with the movement of one end of the one swing arm toward the other swing arm; for another example, the second adjustment structure 72 may be a pneumatic cylinder, hydraulic cylinder, or other structure.

The third adjusting structure 74 is configured to drive the first carrying platform 20 to move along a third direction, for example, the third adjusting structure 74 is an air cylinder, a hydraulic cylinder or other linear feeding structure disposed on the second carrying platform 73, so that the third adjusting structure 74 drives the first carrying platform 20 to move along the third direction relative to the second carrying platform 73.

Referring to fig. 3, in some embodiments, the second adjustment structure 72 further comprises an intermediate platform to which both ends of the swing arms facing away from the first adjustment structure 71 are connected; the second bearing platform 73 is arranged on one side of the middle platform, which is away from the swing arm, and the second bearing platform 73 can rotate relative to the middle platform, for example, an arc-shaped groove is formed in the second bearing platform 73, a bolt penetrating through the arc-shaped groove is arranged on the middle platform, a nut is matched with the bolt in a threaded manner, and the nut can be abutted to one side of the second bearing platform 73, which is away from the middle platform, and thus the second bearing platform 73 is fixed; for example, a rotary cylinder is disposed on the middle platform, and the rotary cylinder can drive the second bearing platform 73 to rotate.

The rotation of the second bearing platform 73 can drive the first bearing platform 20 to rotate along with the rotation of the first bearing platform, so as to drive the light path placing plate 50 to rotate, and the setting can adjust the angle of the light path placing plate 50 relative to the collimator 30, so that the optical axes of the laser component 53 and the lens component 52 can be parallel to the optical axis of the collimator 30.

Referring to fig. 3, in an embodiment, the detecting apparatus 100 further includes a rotation adjusting assembly 80, the rotation adjusting assembly 80 is disposed on the second carrying platform 73, the rotation adjusting assembly 80 is connected to the first camera 401, the rotation of the second carrying platform 73 can drive the rotation adjusting assembly 80 and the first camera 401 to synchronously rotate, and the position of the rotation adjusting assembly 80 and the position of the first camera 401 can be synchronously adjusted when the position of the second carrying platform 73 is adjusted by the multi-direction adjusting assembly 70; the rotation adjusting assembly 80 is used for driving the first camera 401 to rotate around the first direction relative to the second carrying platform 73, i.e. the rotation axis of the first camera 401 is parallel to the first direction.

The rotation adjusting component 80 can be a rotation cylinder, a reduction gearbox matched with a motor or other rotation mechanisms; the rotation adjusting assembly 80 is used for adjusting the angle of the first camera 401 relative to the first carrying platform 20, so that the first camera 401 can face the first carrying platform 20 and the prism 21, and the second reflected light beam L5 emitted from the prism 21 can be emitted into the first camera 401.

Referring to fig. 3, in some embodiments, the swing adjustment assembly 80 is connected with a camera platform, the first camera 401 is connected to the camera platform, the camera platform is rotatably connected to the swing adjustment assembly 80, for example, an arc-shaped slot is formed in the camera platform, a bolt penetrating through the arc-shaped slot is arranged on the swing adjustment assembly 80, a nut is in threaded fit on the bolt, and the nut can abut against a side of the camera platform away from the swing adjustment assembly 80, and thereby fix the camera platform.

This arrangement allows the first camera 401 to be manually fine-tuned after the swivel adjustment assembly 80 adjusts the angle to further ensure that the first camera 401 is facing the prism 21.

Referring to fig. 3, in some embodiments, the detection apparatus 100 further includes a light-compensating light source 90, where the light-compensating light source 90 is disposed on the first carrying platform 20, and the light-compensating light source 90 is disposed on a side of the prism 21 facing away from the first camera 401, that is, the light-compensating light source 90 and the first camera 401 are respectively disposed on opposite sides of the prism 21, where the light-compensating light source 90 is used to enhance brightness of ambient light so as to observe a spot position of the second reflected light beam L5, and the type of the light-compensating light source 90 may be set according to the ambient light or detection requirement.

Referring to fig. 1 and 2, in an embodiment, the collimator 30 includes a light-emitting end 301 and a collimating end 302 disposed opposite to each other, the light-emitting end 301 faces the first carrying platform 20, and the laser beam L1 can enter the collimator 30 through the light-emitting end 301, and the outgoing beam L2 can exit the collimator 30 through the light-emitting end 301; the calibration end 302 is opposite to the light emitting end 301, a calibration ruler 3021 is disposed on the calibration end 302, a midpoint is disposed on the calibration ruler 3021, the midpoint is located on the optical axis of the collimator 30, a light spot can be formed on the calibration end 302 after the laser beam L1 is injected into the collimator 30, the calibration ruler 3021 is used for determining the position of the light spot, and a user can correct the position of the first carrying platform 20 through the position of the light spot.

In some embodiments, the detection apparatus 100 further includes a second camera 402, where the second camera 402 is disposed at one end of the collimator 30, specifically at the end where the calibration end 302 is located, and a worker can observe the position of the light spot formed by the laser beam L1 at the calibration end 302 through the second camera 402, so as to facilitate better observation.

In some embodiments, the light path placing plate 50 has a first position and a second position, the specific position of the light path placing plate 50 is adjustable by the vertical adjustment assembly 60, the laser beam L1 can be injected along the optical axis of the collimator 30 and through the midpoint toward the second camera 402 when the light path placing plate 50 is at the first position, and the injection of the laser beam L1 along the optical axis of the collimator 30 means that the laser beam L1 is coincident with the optical axis of the collimator 30 and is injected into the collimator 30; the laser beam L1 can also be reflected by the collimator 30 to form an outgoing beam L2 when the optical path placing plate 50 is in the second position.

The embodiment adopts a multidirectional adjusting structure formed by the multidirectional adjusting assembly 70 and the vertical adjusting assembly 60, and simultaneously utilizes the characteristic of simulating long-distance parallel light of the collimator 30, so that the relative positions of the optical signal sensor 511 and the collimator 30 can be adjusted according to the designed structure and optical principle, and the positions of light spots on the optical signal sensor 511 can be rapidly acquired only by placing the optical receiving module on the light path placing plate 50, and then defective products can be rapidly detected; it should be noted that, the multidirectional adjusting assembly 70 and the vertical adjusting assembly 60 only need to be adjusted to the optimal positions when being used for the first time, that is, the positions do not need to be adjusted again when being used for the subsequent time, so that visual detection of the optical receiving module is realized, and meanwhile, the detection efficiency and the use convenience are improved.

Referring to fig. 8, an embodiment of the second aspect of the present application further provides a detection method, which is applied to the detection apparatus 100 provided in the embodiment of the first aspect, and the detection method includes:

s203: the prism 21 is mounted to the first load-bearing platform 20.

In this step, the worker installs the prism 21 on the first carrying platform 20, in which the optical axes of the laser assembly 53, the lens assembly 52 and the collimator 30 are in the same vertical plane, and the prism 21 can be installed to face the collimator 30.

S204: the optical path placing plate 50 is adjusted in the first direction so that the collimator 30 can receive the laser beam L1 and emit the laser beam L2.

In this step, since the laser beam L1 is incident on the collimator 30 along the optical axis of the collimator 30 in S202, the collimator 30 cannot reflect to form the outgoing beam L2, the position of the optical path placement plate 50 is adjusted along the first direction, and the laser beam L1 is not on the optical axis of the collimator 30, so that the collimator 30 can generate the outgoing beam L2 from the light-emitting end 301, and at this time, the optical axis of the outgoing beam L2, the optical axis of the lens assembly 52, and the optical signal sensor 511 are all located in the same plane.

S205: the position of the second reflected light beam L5 is observed by the first camera 401.

In this step, the worker can determine the position of the light spot formed on the PCB 51 by the focused light beam L3 formed by the outgoing light beam L2 through the lens assembly 52 by using the second reflected light beam L5 captured by the first camera 401, and the worker presets the qualified range, if the position of the light spot formed by the focused light beam L3 on the PCB 51 falls within the qualified range, the optical receiving module is qualified, otherwise, the optical receiving module is unqualified.

In some embodiments, prior to S203, the detection method further comprises:

s201: the prism 21 is removed so that the laser module 53 emits the laser beam L1 directly into the collimator 30.

In this step, the operator activates the laser assembly 53 and causes the laser assembly 53 to emit the laser beam L1 so that the laser beam L1 can be directed toward the collimator 30 and is emitted into the collimator 30 from the light-emitting end 301 of the collimator 30, and the laser beam L1 emitted into the collimator 30 forms a spot at the collimating end 302.

S202: the positions of first carriage 20 and light path placement plate 50 are adjusted according to the position of laser beam L1 on calibrated scale 3021 such that laser beam L1 passes through the midpoint of calibrated scale 3021.

In this step, the worker observes the position of the spot of the laser beam L1 at the calibration end 302 through the second camera 402, and simultaneously adjusts the positions of the first carrying platform 20 and the optical path placing plate 50, specifically, the worker adjusts the position of the first carrying platform 20 through the multi-directional adjusting assembly 70 so that the spot of the laser beam L1 falls on the midpoint of the calibration ruler 3021, at this time, the laser assembly 53, the lens assembly 52, and the optical signal sensor 511 are all located in the same vertical plane, and the laser beam L1 is injected into the collimator 30 along the optical axis of the collimator 30.

It will be appreciated that in S202, the prism 21 is not disposed on the first carrying platform 20, i.e. the laser beam L1 emitted from the laser assembly 53 is directly injected into the collimator 30.

According to the above steps, in the steps S201 to S202, the position correction step of the first carrying platform 20 is performed, if the model of the optical receiving module is not changed, the operator only needs to take down the PCB 51 and the lens assembly 52 connected thereto and replace the new PCB 51 and the lens assembly 52 after S205, and then the steps S204 and S205 are repeated, that is, the detection of each optical receiving module only needs to repeat the steps S204 and S205.

In one embodiment, a specific adjustment method of the detection apparatus 100 is provided.

In the correction step of the first carrying platform 20, specifically in S202, according to the position of the laser beam L1 on the calibration ruler 3021, the position of the first carrying platform 20 is adjusted by the multi-directional adjusting assembly 70, specifically, the position of the second carrying platform 73 is adjusted along the first direction by the second adjusting structure 72, so that the center of the prism 21 and the optical axis of the collimator 30 are at substantially the same height, and then the second adjusting structure 72 is locked; the position of the second bearing platform 73 is adjusted along the third direction by the third adjusting structure 74, so that the center of the prism 21 and the optical axis of the collimator 30 are in the same vertical plane; the position of the optical path placing plate 50 is adjusted in the first direction by the vertical adjustment assembly 60 so that the laser assembly 53 is flush with the center of the prism 21.

After that, the laser beam L1 emitted from the laser assembly 53 is made to enter the collimator 30, the second camera 402 collects the position of the laser beam L1 on the collimator 3021, the operator can adjust the angle of the second carrying platform 73 through the position, adjust the position of the second carrying platform 73 along the third direction through the third adjusting structure 74, adjust the position of the light path placing plate 50 along the first direction through the vertical adjusting assembly 60, and make the laser beam L1 pass through the center of the collimator 3021, at this time, the laser beam L1 is parallel to the optical axis of the collimator 30, and S202 is completed.

Then, in S204, since the laser beam L1 is incident into the collimator 30 and then reflected by the collimator 30 at the light-emitting end 301 to obtain the outgoing beam L2, the position of the light path placing plate 50 is adjusted along the first direction by the vertical adjustment assembly 60, so that the light path placing plate 50 moves from the first position to the second position, so as to ensure that the laser assembly 53 and the prism 21 are both located within the scope of the collimator 30, i.e. the outgoing beam L2 can be directed to the lens assembly 52, and at this time, the outgoing beam L2 is refracted by the lens assembly 52 to form the focused beam L3 and is directed to the optical signal sensor 511.

Then, in S205, the first reflected light beam L4 is reflected by the prism 21 to obtain a second reflected light beam L5, the first camera 401 can collect the second reflected light beam L5, the angle of the first camera 401 is adjusted by the rotation adjusting component 80, and the focal length of the first camera 401 is adjusted until the first camera 401 can clearly collect the spot image, and the staff can screen out defective products by comparing the spot image with the qualified range.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. A detection apparatus for detecting an optical receiving module, the optical receiving module including a PCB board, an optical signal sensor disposed on the PCB board, and a lens assembly connected to the PCB board, the detection apparatus comprising:

a base;

the collimator is arranged at one side of the first bearing platform;

the first camera is arranged on one side of the prism;

2. The apparatus according to claim 1, wherein the light path placing plate and the collimator are disposed on opposite sides of the prism, respectively, and the first camera, the light path placing plate and the collimator are disposed on different sides of the prism, respectively.

3. The apparatus according to claim 1, wherein the laser assembly includes a laser light source and a first collimator detachably connected to the light path placing plate, and light emitted from the laser light source passes through the first collimator to form the laser beam, and the laser beam is a parallel beam.

4. The apparatus according to claim 1, wherein the lens assembly includes a focusing lens and a second collimator, the focusing lens being provided on the optical path placing plate;

5. The inspection apparatus of claim 1 further comprising a vertical adjustment assembly disposed on the first load platform and coupled to the light path placement plate, the vertical adjustment assembly configured to drive the light path placement plate to move in a first direction;

6. The inspection apparatus of claim 1 further comprising a multi-directional adjustment assembly disposed on the base and coupled to the first load-bearing platform, the multi-directional adjustment assembly configured to drive the first load-bearing platform to move in a first direction, a second direction, and a third direction;

7. The detection apparatus of claim 6, wherein the multi-directional adjustment assembly comprises a first adjustment structure, a second load-bearing platform, and a third adjustment structure;

8. The inspection apparatus of claim 7 further comprising a swivel adjustment assembly disposed on the second load platform and coupled to the first camera, the swivel adjustment assembly configured to rotate the first camera relative to the second load platform about the first direction.

9. The inspection apparatus of claim 1 further comprising a light supplementing light source disposed on the first load platform and on a side of the prism facing away from the first camera.

10. The apparatus according to any one of claims 5 to 8, wherein the collimator includes an exit end and a calibration end disposed opposite to each other, the exit end being oriented toward the first carrying platform, the laser beam being incident on the collimator through the exit end, and the exit beam being emitted from the exit end; the calibrating end is provided with a calibrating ruler, and the calibrating ruler is provided with a midpoint positioned on the optical axis of the collimator;

the light path placing plate is provided with a first position and a second position which is different from the first position in the first direction, the laser beam can be injected into the second camera along the optical axis of the collimator and pass through the midpoint when the light path placing plate is positioned at the first position, and the laser beam can be reflected by the collimator to form the emergent beam when the light path placing plate is positioned at the second position.