Position correction device for a light guide assembly before light performance detection

Abstract

The utility model provides a kind of position correction device before light performance detection of light guide assembly, including carrier, material taking unit, position adjusting mechanism, inspection vision camera, 3D scanner and processor, carrier is movably arranged, and it has an installation through-hole that can accommodate light guide column;Light guide assembly is transferred to carrier by material taking unit, so that light guide column is loaded into the installation through-hole of carrier, and inspection vision camera is used to collect the axial projection image of the light outlet of light guide column and installation through-hole;3D scanner is used to scan the three-dimensional dot matrix coordinates of light inlet section;Position adjusting mechanism acts on carrier to drive carrier to move;To carry out position correction to light guide assembly. The position correction device effectively improves the positioning accuracy of the light guide assembly, while saving positioning time, thereby improving the reliability of light performance detection and meeting the needs of mass production.

Description

Technical Field

[0001] This utility model relates to the field of optical guide component testing, specifically to a position correction device for an optical guide component before optical performance testing. Background Technology

[0002] like Figure 1 and Figure 2 The diagram shows the structure of one of the existing light guide components 1. The light guide component 1 has a light input segment 2 and a light guide post 3 that is connected to and perpendicular to the light input segment 2. The light guide post 3 has a light input port 4 at one end of the light input segment 2 and a light output port 5 at the other end.

[0003] Before optical performance testing, the workpiece (i.e., the light guide component 1) needs to be positioned. In the prior art, to position the light guide component, multiple vision cameras need to be set up to collect images from different positions, such as images from the upward, downward and side views from multiple angles; then the offset is calculated for the influence of different positions, and then position correction is performed separately, which results in a long positioning time and cannot meet the needs of large-scale production testing. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a method and apparatus for position correction of an optical guide component before optical performance testing.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A method for position correction of an optical guide component before optical performance testing includes the following steps:

[0007] Step 1: Provide a movable carrier with a mounting through hole that can accommodate the optical guide post. Adjust the carrier to match the set original zero position.

[0008] Step 2: Insert the light guide post of the light guide assembly into the mounting through hole of the carrier, with the light incident segment abutting against the surface of the carrier and fixed relative to the carrier;

[0009] Step 3: Acquire axial projection images of the light guide post's output port and mounting through-hole; using the center of the mounting through-hole located at the original zero point as a reference, calculate the offset between the center of the mounting through-hole and the center of the light output port;

[0010] Step four: Based on the offset obtained in step three, the position of the light guide post's output port is corrected by adjusting the position of the carrier, so that the position of the light guide post's output port matches the original zero point position.

[0011] Step 5: Use a 3D scanner to obtain the three-dimensional point coordinates of the light-incident segment of the light guide component;

[0012] Step six: Compare the three-dimensional point matrix coordinates of the incident light segment acquired in step five with the set standard reference coordinates to obtain the offset of the incident light segment.

[0013] Step 7: Based on the offset of the incident light segment obtained in Step 6, while keeping the center position of the light outlet of the light guide post unchanged, the position of the incident light segment is corrected by adjusting the position of the carrier.

[0014] Furthermore, it also includes a six-degree-of-freedom adjustment mechanism; the six-degree-of-freedom adjustment mechanism acts on the carrier to drive the carrier to perform translational movement along the X-axis, translational movement along the Y-axis, translational movement along the Z-axis, rotational movement around the X-axis, rotational movement around the Y-axis and / or rotational movement around the Z-axis; thereby realizing the position correction in steps four and seven.

[0015] Furthermore, in step three, the offset between the center of the mounting through hole and the center of the light outlet is calculated, and it is determined whether it meets the condition 2.70≦Dlp / Lgap ≦13.30. If it meets the condition, the next step is continued; if it does not meet the condition, the step is stopped, and the light guide component is removed before returning to step one. Here, Dlp is the maximum diameter of the light outlet in the axial projection image, and Lgap is the maximum radial distance between the edge of the light outlet and the mounting through hole in the axial projection image.

[0016] Furthermore, in step three, if the mounting through hole does not match the light output port by 2.70≦Dlp / Lgap ≦13.30, an alarm will be triggered.

[0017] Furthermore, in step two, a material handling unit transfers the light guide component and places it on the carrier. The material handling unit is equipped with a material handling vision camera, which captures images of the mounting through holes of the carrier. Based on the position of the mounting through holes in the images, the material handling unit controls the insertion of the light guide post of the light guide component into the mounting through holes of the carrier.

[0018] Furthermore, in step three, an inspection vision camera is used to acquire axial projection images of the light outlet of the light guide post and the mounting through hole. The inspection vision camera is also equipped with a ring light source, which is set around the periphery of the inspection vision camera.

[0019] Furthermore, the inspection vision camera is located directly below the mounting through hole, with its acquisition end facing upwards to acquire the axial projection image of the light guide post's light outlet and the mounting through hole; or an optical deflection component is provided directly below the mounting through hole, with the inspection vision camera located to the side of the carrier to acquire the refracted image of the optical deflection component.

[0020] A position correction device for an optical guide component before optical performance testing includes:

[0021] A carrier, which is movable and has a mounting through hole for accommodating an optical guide post;

[0022] A material handling unit is used to transfer the light guide assembly to the carrier, so that the light guide post is installed into the mounting through hole of the carrier, and the light incident segment abuts against the surface of the carrier and is fixed relative to the carrier.

[0023] A position adjustment mechanism acts on the carrier to drive the carrier to move;

[0024] A visual inspection camera is used to capture axial projection images of the light outlet and mounting through-hole of the light guide post;

[0025] A 3D scanner used to scan the three-dimensional point coordinates of the incident light segment;

[0026] A processor is provided, wherein the output terminals of the inspection vision camera and the 3D scanner are respectively connected to the input terminals of the processor, and the control output terminal of the processor is connected to the position adjustment mechanism to control the position adjustment mechanism to drive the carrier to move.

[0027] The specific working method is as follows: the processor receives the image acquired by the inspection vision camera, calculates the offset between the center of the mounting through hole and the center of the light outlet, and controls the position adjustment mechanism to drive the carrier to move and correct the position of the light outlet of the light guide post; and the processor receives the three-dimensional point matrix coordinates acquired by the 3D scanner, calculates the offset from the standard reference coordinates, and controls the position adjustment mechanism to drive the carrier to move and correct the position of the light input segment.

[0028] Furthermore, the position adjustment mechanism is a six-degree-of-freedom adjustment mechanism; the six-degree-of-freedom adjustment mechanism acts on the carrier to drive the carrier to perform translational movement along the X-axis, translational movement along the Y-axis, translational movement along the Z-axis, rotational movement around the X-axis, rotational movement around the Y-axis and / or rotational movement around the Z-axis; thereby realizing the position correction of the light outlet and light inlet of the light guide post.

[0029] Furthermore, the processor calculates the offset between the center of the mounting through hole and the center of the light outlet, and determines whether the mounting through hole and the light outlet conform to 2.70≦Dlp / Lgap ≦13.30. If they conform, the position adjustment mechanism is controlled to make corrections; if they do not conform, the process stops and an alarm is triggered. Here, Dlp is the maximum diameter of the light outlet in the axial projection image, and Lgap is the maximum radial distance between the edge of the light outlet and the mounting through hole in the axial projection image.

[0030] Furthermore, the material handling unit is equipped with a material handling vision camera. The material handling vision camera captures images of the mounting through holes of the carrier and outputs them to the processor. The processor controls the material handling unit, that is, the processor controls the material handling unit to insert the light guide post of the light guide component into the mounting through hole of the carrier according to the position of the mounting through hole in the image.

[0031] Furthermore, the inspection vision camera is also equipped with a ring light source, which is located around the periphery of the inspection vision camera.

[0032] Furthermore, the inspection vision camera is located directly below the mounting through hole, with its acquisition end facing upwards to acquire the axial projection image of the light guide post's light outlet and the mounting through hole; or an optical deflection component is provided directly below the mounting through hole, with the inspection vision camera located to the side of the carrier to acquire the refracted image of the optical deflection component.

[0033] Furthermore, the 3D scanner is equipped with a laser light source.

[0034] The technical solution provided by this utility model has the following beneficial effects:

[0035] 1. A carrier with mounting through holes is designed. The light guide post of the light guide component is installed into the mounting through holes of the carrier. When the carrier is in an initial zero position, the position of the light guide post's light outlet is corrected by obtaining the positional offset between the mounting through holes and the light outlet of the light guide post. Then, the three-dimensional point matrix coordinates of the light input segment of the light guide component are obtained at one time using a 3D scanner, which helps to improve the speed and accuracy of collecting position data. After obtaining the offset of the light input segment, the position of the light input segment is corrected. This method effectively improves the positioning accuracy of the light guide component, saves positioning time, and thus improves the reliability of optical performance testing and meets the needs of mass production.

[0036] 2. A movable carrier is used, and the position of the light guide component is corrected by adjusting the position of the carrier without contacting the light guide component, thus avoiding collision damage.

[0037] 3. The position correction device for the optical guide component designed in this application before optical performance testing can effectively correct the position of the optical guide component.

[0038] 4. A six-degree-of-freedom adjustment mechanism acts on the carrier to drive the carrier to perform translational movement along the X-axis, translational movement along the Y-axis, translational movement along the Z-axis, rotational movement around the X-axis, rotational movement around the Y-axis, and / or rotational movement around the Z-axis, thereby correcting the position of the light outlet and light inlet of the light guide component. The correction accuracy is high and the speed is fast.

[0039] 5. When calculating the offset between the center of the mounting through hole and the center of the light outlet, simultaneously determine whether the offset conforms to 2.70≦Dlp / Lgap ≦13.30, where Dlp is the maximum diameter of the light outlet in the axial projection image, and Lgap is the maximum radial distance between the edge of the light outlet and the mounting through hole in the axial projection image. Through intuitive numerical calculation, an accurate judgment is obtained on whether the appearance of the light outlet of the light guide component is compliant, achieving the purpose of preliminary screening and improving screening efficiency. Attached Figure Description

[0040] Figure 1 The image shown is a 3D schematic of the optical guide component. Figure 1 ;

[0041] Figure 2 The image shown is a 3D schematic of the optical guide component. Figure 2 ;

[0042] Figure 3 The diagram shown is a flowchart of the position correction method for the optical guide component before optical performance testing in this embodiment.

[0043] Figure 4 The diagram shown is a structural schematic of the carrier in the embodiment;

[0044] Figure 5 The diagram shown is a schematic representation of the structure by which the optical guide component is transferred to the carrier in this embodiment.

[0045] Figure 6 The diagram shown is a partial structural schematic of one of the position correction devices for the optical guide component before optical performance detection in the embodiment.

[0046] Figure 7 The image shown is a schematic diagram of the axial projection of the light outlet of the light guide post and the mounting through hole in the embodiment.

[0047] Figure 8 The diagram shown is a partial structural schematic of one of the position correction devices for the optical guide component before optical performance detection in another embodiment. Detailed Implementation

[0048] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0049] In the description of this utility model, terms such as "upper", "lower", "left", "right", "front", and "rear" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0051] Example 1

[0052] This embodiment provides a method for position correction of an optical guide component before optical performance testing, wherein the structure of the optical guide component 1 is as follows: Figure 1 and Figure 2 As shown, it has an incident light section 2 and a light guide post 3 connected to and perpendicular to the incident light section 2. The light guide post 3 has an incident light port 4 at one end of the incident light section 2 and an exit light port 5 at the other end.

[0053] Specifically, refer to Figures 3 to 7 As shown, the position correction method for the optical guide component before optical performance testing includes the following steps:

[0054] Step 1: Provide a movable carrier 10, which has a mounting through hole 11 for accommodating the light guide post 3, and adjust the carrier 10 to match the set original zero position.

[0055] Adjusting the carrier 10 to match the set original zero position can be understood as: calibrating the position of the carrier 10, such as adjusting the carrier 10 so that the central axis of its mounting through hole 11 coincides with the set reference axis, or adjusting the carrier 10 so that the center of the bottom opening of its mounting through hole 11 coincides with the set reference center, etc.; as long as the carrier 10 can match the set reference position, it is acceptable.

[0056] Step two, insert the light guide post 3 of the light guide assembly 1 into the mounting through hole 11 of the carrier. The light incident section 2 abuts against the surface of the carrier 10 and is fixed relative to the carrier 10. This state is as follows: Figure 5 and Figure 6 As shown.

[0057] Specifically, in this step, a material handling unit 51 transfers the light guide component 1 and places it on the carrier 10. The material handling unit 51 is equipped with a material handling vision camera 52, which captures images of the mounting through-hole 11 of the carrier 10. Based on the position of the mounting through-hole 11 in the image, the material handling unit 51 is controlled to insert the light guide post 3 of the light guide component 1 into the mounting through-hole 11 of the carrier 10, achieving precise transfer. Specifically, the material handling unit 51 can be a vacuum adsorption unit, which uses vacuum adsorption to fix the light guide component 1, reducing damage to the light guide component 1.

[0058] Step 3: Acquire axial projection images of the light outlet 5 of the light guide post 3 and the mounting through hole 11; using the center of the mounting through hole 11 located at the original zero point as a reference, calculate the offset between the center of the mounting through hole 11 and the center of the light outlet 5.

[0059] Specifically, the axis of the mounting through hole 11 is vertical. The axial projection image refers to the image projected onto the horizontal plane along the vertical direction. Please refer to this image. Figure 7 As shown, this corresponds to the image information of the light outlet 5 of the light guide post 3 and the mounting through hole 11 in a downward viewing state. In this way, the positional deviation (i.e., offset) between the center of the mounting through hole 11 and the center of the light outlet 5 can be directly measured and calculated.

[0060] In this step, having already obtained the axial projection images of the light-emitting port 5 of the light guide post 3 and the mounting through-hole 11, it can be simultaneously determined whether the distance between the light-emitting port 5 of the light guide post 3 and the mounting through-hole 11 conforms to 2.70≦Dlp / Lgap≦13.30, where Dlp is the maximum diameter of the light-emitting port 5 in the axial projection image, and Lgap is the maximum radial distance between the edge of the light-emitting port 5 and the mounting through-hole 11 in the axial projection image. Using this determination method, the appearance dimensions of the light guide assembly can be initially screened for compliance; if compliant, proceed to the next step; if not, stop the step, and return to step one after removing the light guide assembly 1.

[0061] Furthermore, if the mounting through hole 11 does not match the light outlet 5 within the range of 2.70≦Dlp / Lgap≦13.30, an alarm will be triggered to remind the operator to confirm, thereby improving the operation speed and inspection efficiency.

[0062] Specifically, when the inspection vision camera acquires the axial projection image of the light outlet 5 of the light guide post 3 and the mounting through hole 11, such as Figure 6As shown, the specific configuration is as follows: the inspection vision camera 20 is located directly below the mounting through hole 11, and the acquisition end of the inspection vision camera 20 is positioned upwards to acquire the axial projection image of the light-emitting port 5 of the light guide post 3 and the mounting through hole 11; direct acquisition is possible. Of course, in other embodiments, the configuration of the inspection vision camera is not limited to this, such as... Figure 8 As shown, an optical deflection component 40 (such as a reflector set at 45°) can also be set directly below the mounting through hole 11. The inspection vision camera 20 is located on the side of the carrier 10. The optical deflection component 40 refracts the image above (i.e., the axial projection image of the light outlet 5 of the light guide post 3 and the mounting through hole 11) to the inspection vision camera 20 on the side, and is captured by the inspection vision camera 20. With this setting, the overall height of the device can be reduced.

[0063] Step four: Based on the offset obtained in step three, the position of the light outlet 5 of the light guide post 3 is corrected by adjusting the position of the carrier 10, so that the position of the light outlet 5 of the light guide post 3 matches the original zero point position; that is, the carrier 10 is adjusted by swinging or translating, so that the position of the carrier 10 and the light guide component 1 on it changes together, so that the position of the light outlet 5 of the light guide post 1 matches the original zero point position, such as making the center point of the light outlet 5 of the light guide post 3 located on the reference axis set in step one; in this way, the position correction of the light outlet 5 of the light guide post 3 (i.e., the lower end of the light guide component 1) is completed.

[0064] Step 5: Use a 3D scanner 30 to obtain the three-dimensional dot matrix coordinates of the light-incident segment 2 of the light guide component 1; the 3D scanner 30 can directly obtain the three-dimensional dot matrix coordinates of the light-incident segment 2, which is beneficial to improving the speed and accuracy of collecting position data.

[0065] Specifically, the 3D scanner 30 is equipped with a laser light source and performs scanning using the laser light source. Furthermore, the 3D scanner 30 is positioned above the incident light segment 2 and uses the laser light source to scan downwards to obtain the three-dimensional lattice coordinates of the incident light segment 2. Obtaining accurate three-dimensional lattice coordinates of the incident light segment 2 is beneficial for subsequent calculation of the correct offset, improving the position correction accuracy, and thus improving the reliability of optical performance detection.

[0066] Step six: Compare the three-dimensional point matrix coordinates of the incident light segment 2 acquired in step five with the set standard reference coordinates to obtain the offset of the incident light segment 2.

[0067] If the position of the incident light segment 2 is oriented differently or tilted at different angles, the three-dimensional coordinates of each position can be obtained by collecting data and then compared with the set standard reference coordinates. This will clearly show the differences in coordinate values ​​of each dimension of each position, thus obtaining the offset.

[0068] Step 7: Based on the offset of the light-incident segment 2 obtained in Step 6, while keeping the center position of the light-outlet 5 of the light guide post 1 unchanged, the position of the carrier 10 is adjusted to correct the position of the light-incident segment 2.

[0069] The above-described method achieves precise positioning of the light guide component 1 by correcting the position of its lower end (i.e., the light outlet 5 of the light guide post 3) and upper end (i.e., the light input segment 2). This method effectively improves the positioning accuracy of the light guide component 1, saves positioning time, and thus enhances the reliability of optical performance testing and meets the needs of mass production. Furthermore, the use of a movable carrier allows for position correction of the light guide component 1 by adjusting the position of the carrier 10, preventing contact with the light guide component 1 and avoiding collision damage.

[0070] Specifically, this embodiment also includes a six-degree-of-freedom adjustment mechanism. This mechanism acts on the carrier 10 to drive it to perform translational movement along the X-axis, translational movement along the Y-axis, translational movement along the Z-axis, rotational movement around the X-axis, rotational movement around the Y-axis, and / or rotational movement around the Z-axis, thereby achieving position correction in steps four and seven. Through the six-degree-of-freedom adjustment mechanism, adjustments can be made in one or more of the six directions, allowing the carrier 10 to complete the position correction of the light outlet 5 or the light entrance segment 2 in one operation. That is, the position correction of both the light outlet 5 and the light entrance segment 2 can be completed in one operation, making the position correction more accurate and faster. Specifically, the six-degree-of-freedom adjustment mechanism is an existing structure, such as a six-axis robotic arm in the prior art; its specific structure will not be detailed here.

[0071] Furthermore, after completing the position correction of the light guide component 1, the carrier 10 and the light guide component 1 are transferred together to the optical detection station for testing.

[0072] Example 2

[0073] This embodiment provides a position correction device for an optical guide component before optical performance testing, used to implement the position correction method for the optical guide component before optical performance testing described in Embodiment 1 above. Specifically, refer to... Figures 4 to 7 As shown, the position correction device for the optical guide assembly before optical performance testing includes:

[0074] A carrier 10 is movably set and has a mounting through hole 11 for accommodating the optical guide post 3;

[0075] A material handling unit 51 is used to transfer the light guide assembly 1 to the carrier 10, so that the light guide post 3 is installed into the mounting through hole 11 of the carrier 10, and the light incident section 2 abuts against the surface of the carrier 10 and is fixed relative to the carrier 10; that is, in the above step two, the light guide assembly 1 is transferred to the carrier 10 by the material handling unit 51.

[0076] A position adjustment mechanism acts on the carrier 10 to drive the carrier 10 to move; specifically, the position adjustment mechanism is the aforementioned six-degree-of-freedom adjustment mechanism.

[0077] An inspection vision camera 20 is used to acquire axial projection images of the light outlet 5 of the light guide post 3 and the mounting through hole 11; that is, in step three above, the inspection vision camera 20 acquires axial projection images of the light outlet 5 of the light guide post 3 and the mounting through hole 11.

[0078] A 3D scanner 30 is used to scan the three-dimensional point coordinates of the incident light segment 2;

[0079] A processor is provided, wherein the output terminals of the inspection vision camera 20 and the 3D scanner 30 are respectively connected to the input terminals of the processor, and the control output terminal of the processor is connected to the position adjustment mechanism to control the position adjustment mechanism to drive the carrier to move.

[0080] The processor operates as follows: it receives images acquired by the inspection vision camera 20, calculates the offset between the center of the mounting through hole 11 and the center of the light outlet 5, and controls the position adjustment mechanism to move the carrier 10 to correct the position of the light outlet 5 of the light guide post 3; and it receives three-dimensional point matrix coordinates acquired by the 3D scanner 30, calculates the offset from the standard reference coordinates, and controls the position adjustment mechanism to move the carrier 10 to correct the position of the light incident segment 2.

[0081] The position correction device for the optical guide component designed in this application before optical performance testing can effectively correct the position of the optical guide component 1.

[0082] In conjunction with the steps of the above position correction method, in step two, the light guide component 1 is transferred to the carrier 10 by the material handling unit 51. In step three, the inspection vision camera 20 acquires the axial projection image of the light outlet 5 of the light guide post 3 and the mounting through hole 11; then the information is transmitted to the processor, which receives the image acquired by the inspection vision camera 20 and calculates the offset between the center of the mounting through hole 11 and the center of the light outlet 5. In step four, the processor controls the position adjustment mechanism to drive the carrier 1 according to the processed offset data. In step five, the light-incident section 2 of the light guide component 1 is scanned by the 3D scanner 30 to obtain the three-dimensional dot matrix coordinates of the light-incident section 2 of the light guide component 1; in step six, the 3D scanner 30 outputs the data to the processor, the processor receives the three-dimensional dot matrix coordinates collected by the 3D scanner 30 and calculates the offset from the standard reference coordinates; in step seven, the processor controls the position adjustment mechanism to drive the carrier 10 to move according to the offset obtained in step six to correct the position of the light-incident section 2.

[0083] Specifically, the material picking unit 51 picks up the material and transfers it to the carrier 10. To ensure more accurate transfer, in this embodiment, the material picking unit 51 is equipped with a material picking vision camera 52. The material picking vision camera 52 captures the image of the mounting through hole 11 of the carrier 10 and outputs it to the processor. The processor controls the material picking unit 51. According to the position of the mounting through hole 11 in the image, the processor controls the material picking unit 51 to insert the light guide post 3 of the light guide component 1 into the mounting through hole 11 of the carrier 10, so as to achieve accurate insertion.

[0084] Furthermore, the inspection vision camera 20 is also equipped with a ring light source, which is set around the periphery of the inspection vision camera 20. The addition of this ring light source makes the acquired image information clearer.

[0085] The position adjustment mechanism employs a six-degree-of-freedom adjustment mechanism, enabling the carrier 10 to complete the position correction of the light outlet 5 or the light input segment 2 in one operation, resulting in more accurate and faster position correction. Of course, in other embodiments, the position adjustment mechanism can also employ other mechanisms such as a four-axis robotic arm.

[0086] Specifically, the 3D scanner 30 is equipped with a laser light source and performs scanning through the laser light source. Furthermore, the 3D scanner 30 is positioned above the incident light segment 2 and uses the laser light source to scan downwards to obtain the three-dimensional lattice coordinates of the incident light segment 2. Obtaining accurate three-dimensional lattice coordinates of the incident light segment 2 is beneficial for subsequent calculation of the correct offset, improving the position correction accuracy, and thus improving the reliability of optical performance detection.

[0087] Specifically, the processor can be a PLC processor in the existing technology, which integrates data processing and control output functions.

[0088] Specifically, when the processor calculates the offset between the center of the mounting through-hole 11 and the center of the light-emitting port 5, it determines whether the mounting through-hole 11 and the light-emitting port 5 conform to 2.70≦Dlp / Lgap ≦13.30, where Dlp is the maximum diameter of the light-emitting port 5 in the axial projection image, and Lgap is the maximum radial distance between the edge of the light-emitting port 5 and the mounting through-hole 11 in the axial projection image. If they conform, the position adjustment mechanism is controlled to make corrections; if they do not conform, the process stops and an alarm is triggered. That is, the processor's control output is also connected to an alarm, which is used to trigger an alarm and remind the operator to confirm, thereby improving the operation speed and inspection efficiency. This is a preferred judgment method. Of course, in other embodiments, it is not limited to this. For example, the position adjustment mechanism can be directly controlled to make adjustments by judging the offset between the center point of the mounting through-hole 11 and the light-emitting port 5.

[0089] Specifically, when the inspection vision camera acquires the axial projection image of the light outlet 5 of the light guide post 3 and the mounting through hole 11, such as Figure 6 As shown, the specific configuration is as follows: the inspection vision camera 20 is located directly below the mounting through hole 11, and the acquisition end of the inspection vision camera 20 is positioned upwards to acquire the axial projection image of the light-emitting port 5 of the light guide post 3 and the mounting through hole 11; direct acquisition is possible. Of course, in other embodiments, the configuration of the inspection vision camera is not limited to this, such as... Figure 8 As shown, an optical deflection component 40 (such as a reflector set at 45°) can also be set directly below the mounting through hole 11. The inspection vision camera 20 is located on the side of the carrier 10. The optical deflection component 40 refracts the image above (i.e., the axial projection image of the light outlet 5 of the light guide post 3 and the mounting through hole 11) to the inspection vision camera 20 on the side, and is captured by the inspection vision camera 20. With this setting, the overall height of the device can be reduced.

[0090] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A position correction device for a light guide component before optical performance testing, the light guide component having a light incident section and a light guide post connected to and perpendicular to the light incident section, the light guide post having a light inlet at one end of the light incident section and a light outlet at the other end, characterized in that, include: A carrier, which is movable and has a mounting through hole for accommodating an optical guide post; One material handling unit is used to transfer the optical guide assembly onto the carrier; A position adjustment mechanism acts on the carrier to drive the carrier to move; A visual inspection camera is used to capture axial projection images of the light outlet and mounting through-hole of the light guide post; A 3D scanner used to scan the three-dimensional point coordinates of the incident light segment; A processor is provided, wherein the output terminals of the inspection vision camera and the 3D scanner are respectively connected to the input terminals of the processor, and the control output terminal of the processor is connected to the position adjustment mechanism to control the position adjustment mechanism to drive the carrier to move.

2. The position correction device for the optical guide component before optical performance testing according to claim 1, characterized in that: The position adjustment mechanism is a six-degree-of-freedom adjustment mechanism; the six-degree-of-freedom adjustment mechanism acts on the carrier to drive the carrier to perform translational movement along the X-axis, translational movement along the Y-axis, translational movement along the Z-axis, rotational movement around the X-axis, rotational movement around the Y-axis and / or rotational movement around the Z-axis; thereby realizing the position correction of the light outlet and light inlet of the light guide post.

3. The position correction device for the optical guide component before optical performance testing according to claim 1, characterized in that: The material handling unit is equipped with a material handling vision camera. The material handling vision camera captures images of the mounting through holes of the carrier and outputs them to the processor. The processor controls the material handling unit.

4. The position correction device for the optical guide component before optical performance testing according to claim 1, characterized in that: The inspection vision camera is also equipped with a ring light source, which is located around the periphery of the inspection vision camera.

5. The position correction device for the optical guide component before optical performance testing according to claim 1, characterized in that: The inspection vision camera is located directly below the mounting through hole, with its acquisition end facing upwards to acquire the axial projection image of the light guide post's light outlet and the mounting through hole; or an optical deflection component is located directly below the mounting through hole, with the inspection vision camera located to the side of the carrier to acquire the refracted image of the optical deflection component.

6. The position correction device for the optical guide component before optical performance testing according to claim 1, characterized in that: The 3D scanner is equipped with a laser light source.

Images