An optical waveguide detection system and method

Abstract

Embodiments of the present application provide an optical waveguide detection system and a detection method. The optical waveguide detection system comprises: a light source assembly comprising a multi-axis mechanical arm and a light source module, the multi-axis mechanical arm adjusting the light output angle of the light source module; a to-be-detected sample assembly comprising a bearing assembly, a profiling workpiece and a to-be-detected optical waveguide, the profiling workpiece calibrating the setting parameters of the to-be-detected optical waveguide; the to-be-detected optical waveguide is arranged on the bearing assembly, and the light emitted by the light source module is incident into the to-be-detected optical waveguide to form a rainbow stripe; a shooting assembly is used to obtain the rainbow stripe image formed by the to-be-detected optical waveguide receiving light with different light output angles; a control module is used to control the bearing assembly to move through the profiling workpiece to calibrate the setting parameters of the to-be-detected optical waveguide, and the control module is used to control the light source assembly to emit light to the to-be-detected optical waveguide at a preset light output angle, obtain the rainbow stripe image obtained by the shooting assembly, and determine the parameters of the rainbow stripe image according to different preset light output angles.

Description

Technical Field

[0001] This application relates to the field of optical waveguide technology, and more specifically, to an optical waveguide detection system and detection method. Background Technology

[0002] When a user uses a near-eye display device, light of a specific wavelength is incident on the optical waveguide structure within the device at a specific angle. The waveguide then diffracts this light, and the light is also constantly reflected during its propagation within the waveguide. These two optical effects combine to easily generate rainbow patterns. These rainbow patterns enter the user's eye, causing them to see obvious rainbow stripes. This not only interferes with the original display effect of the waveguide, resulting in image defects, but also severely impacts the user experience, reducing user satisfaction with the near-eye display device.

[0003] Existing rainbow pattern detection systems have significant limitations. They struggle to accurately and realistically simulate the complex scenarios of ambient light from different incident directions projecting onto a diffractive waveguide, and they also cannot accurately reproduce the actual placement of the diffractive waveguide in near-eye display devices. This directly reduces the accuracy and reliability of the test results obtained by the detection system, making it difficult to effectively assess the actual impact of rainbow patterns on display performance.

[0004] In view of this, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this application is to provide a new technology solution for an optical waveguide detection system and detection method.

[0006] In a first aspect, embodiments of this application provide an optical waveguide detection system. The optical waveguide detection system includes: a light source assembly, comprising a multi-axis robotic arm and a light source module disposed on the multi-axis robotic arm, wherein the multi-axis robotic arm adjusts the light emission angle of the light source module;

[0007] The sample assembly under test includes a movable support assembly, a contoured workpiece, and a waveguide under test. The contoured workpiece is detachably mounted on the support assembly and is used to calibrate the setting parameters of the waveguide under test. The waveguide under test is mounted on the support assembly and receives light emitted from the light source module to form a rainbow pattern.

[0008] The imaging component is located on one side of the center of the eye box of the optical waveguide under test. The imaging component is used to acquire rainbow pattern images formed by light rays receiving light rays at different emission angles received by the optical waveguide under test.

[0009] The control module is communicatively connected to the imaging component, the carrier component, and the light source component. The control module is used to control the movement of the carrier component to calibrate the setting parameters of the optical waveguide under test using the contoured workpiece, and to control the light source component to emit light rays to the optical waveguide under test at a preset light emission angle to acquire the rainbow pattern image captured by the imaging component, and to determine the parameters of the rainbow pattern image according to different preset light emission angles.

[0010] Optionally, the contoured workpiece includes a body and a calibration component disposed at the center of the body;

[0011] The calibration component has a length dimension along the optical axis of the detection system, the length dimension being the same as the exit pupil distance of the waveguide under test, and the calibration component has a radial dimension along the direction perpendicular to the optical axis of the detection system, the radial dimension being the same as the diameter of the lens aperture of the imaging assembly.

[0012] Optionally, the support assembly includes a mounting frame and a connecting shaft, the mounting frame being able to swing relative to the connecting shaft, and the connecting shaft being configured to rotate; the mounting frame is used to mount the contoured workpiece or the optical waveguide under test;

[0013] When the mounting frame on which the contoured workpiece is mounted swings relative to the connecting shaft, the contoured workpiece is used to calibrate the concave angle of the optical waveguide under test.

[0014] When the connecting shaft drives the mounting frame on which the contoured workpiece is mounted to rotate, the contoured workpiece is used to calibrate the surface bend angle of the optical waveguide under test.

[0015] Optionally, the sample assembly to be tested further includes a first support base, and the connecting shaft is rotatably disposed on the first support base.

[0016] Optionally, the first support is disposed on a three-dimensional displacement platform.

[0017] Optionally, the multi-axis robotic arm is a six-axis robotic arm.

[0018] Optionally, the light source assembly further includes a second support base, on which the multi-axis robotic arm is disposed, and on which the second support base is disposed on a two-dimensional displacement platform.

[0019] Optionally, the shooting assembly includes a third support base and a shooting module, wherein the shooting module is disposed on the third support base, and the third support base is disposed on a three-dimensional displacement platform.

[0020] Secondly, embodiments of this application also provide an optical waveguide detection method. The optical waveguide detection method is based on the optical waveguide detection system described in the first aspect, and includes:

[0021] The movement of the carrier component is controlled by the conforming workpiece to calibrate the setting parameters of the optical waveguide under test, which is disposed on the carrier component.

[0022] Control the light source assembly to emit light rays toward the light wave to be measured at a preset light emission angle;

[0023] The camera module is controlled to acquire rainbow-pattern images formed by light rays at different emission angles received by the optical waveguide under test.

[0024] The rainbow pattern image captured by the shooting component is obtained, and the parameters of the rainbow pattern image are determined according to different preset light emission angles.

[0025] Optionally, controlling the movement of the carrier component to calibrate the setting parameters of the optical waveguide under test using the conformal workpiece includes:

[0026] Control the swing of the support component that mounts the contoured workpiece to calibrate the concave angle of the optical waveguide under test;

[0027] The rotation of the support component on which the contoured workpiece is mounted is controlled to calibrate the surface bend angle of the optical waveguide under test.

[0028] Optionally, controlling the movement of the support component to calibrate the setting parameters of the optical waveguide under test using the conformal workpiece further includes:

[0029] The contoured workpiece includes a body and a calibration component disposed at the center of the body;

[0030] The circumferential contour of the calibration component of the contoured workpiece is controlled to be set relative to the lens aperture contour in the imaging assembly to calibrate the exit pupil distance and the center position of the eye box of the waveguide under test.

[0031] The technical solution provided in this application embodiment offers an optical waveguide testing system, which includes a light source assembly, a sample assembly under test, an imaging assembly, and a control module. The light source module in the light source assembly is mounted on a multi-axis robotic arm. Based on the calibration parameters of the contoured workpiece, the optical waveguide under test in the sample assembly is positioned on a pre-defined support assembly, thus improving the accuracy and reliability of the test results.

[0032] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0034] Figure 1 The diagram shown is a structural diagram of the optical waveguide detection system provided in an embodiment of this application.

[0035] Figure 2 The diagram shown is a structural diagram of the sample component to be tested provided in an embodiment of this application.

[0036] Figure 3 The diagram shown is a structural block diagram of the optical waveguide detection system provided in an embodiment of this application.

[0037] Figure 4 The diagram shown is a flowchart of the optical waveguide detection method provided in an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Light source assembly; 10. Multi-axis robotic arm; 11. Light source module; 111. Clamping fixture; 112. Light source module; 12. Second support base;

[0040] 2. Sample assembly to be tested; 21. Contouring workpiece; 22. Bearing assembly; 23. First support base; 210. Main body; 211. Calibration component; 221. Mounting frame; 222. Connecting shaft;

[0041] 3. Shooting components; 30. Shooting module; 301. Imaging colorimeter; 302. Optical lens; 31. Third support base;

[0042] 4. Control module. Detailed Implementation

[0043] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0044] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0045] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0046] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0048] <System Implementation>

[0049] This application provides an optical waveguide detection system. (Refer to...) Figure 1 and Figure 3 The optical waveguide detection system includes: a light source component 1, a sample component 2, an imaging component 3, and a control module 4.

[0050] The light source assembly 1 includes a multi-axis robotic arm 10 and a light source module 11 disposed on the multi-axis robotic arm 10. The multi-axis robotic arm 10 adjusts the light emission angle of the light source module 11.

[0051] The sample assembly 2 under test includes a movable support assembly 22, a contoured workpiece 21, and a waveguide under test. The contoured workpiece 21 is detachably mounted on the support assembly 22 and is used to calibrate the setting parameters of the waveguide under test. The waveguide under test is mounted on the support assembly 22, and the light emitted from the light source module 11 is incident on the waveguide under test to form a rainbow pattern.

[0052] After the conformal workpiece 21 is placed on the carrier component 22 to complete the calibration of the setting parameters of the optical waveguide under test, the setting position of the carrier component 22 is basically determined. At this time, the conformal workpiece 21 is removed, and the optical waveguide under test is placed on the carrier component 22 in the determined position. That is, after the conformal workpiece 21 is placed on the carrier component 22 to complete the calibration of the setting parameters of the optical waveguide under test, the optical waveguide under test is placed on the carrier component 22 according to the calibrated setting parameters.

[0053] The imaging component 3 is located on one side of the center of the eye box of the optical waveguide under test. The imaging component 3 is used to acquire rainbow pattern images formed by light rays with different emission angles received by the optical waveguide under test.

[0054] The control module 4 is communicatively connected to the imaging component 3, the carrier component 22, and the light source component 1. The control module 4 is used to control the carrier component 22 to move and use the contour workpiece 21 to calibrate the setting parameters of the optical waveguide under test. The control module 4 is also used to control the light source component 1 to emit light rays to the optical waveguide under test at a preset light emission angle, acquire the rainbow pattern image captured by the imaging component 3, and determine the parameters of the rainbow pattern image according to different preset light emission angles.

[0055] In this embodiment of the application, the optical waveguide detection system is used to detect the parameters of the rainbow pattern image of the optical waveguide under test. The parameters of the rainbow pattern image can reflect the characteristics of the rainbow pattern formed by the optical waveguide during imaging.

[0056] For example, the parameters of the rainbow pattern image include, but are not limited to, the peak brightness, average brightness, color coordinates, size, orientation of the rainbow pattern in the field of view, and density of the rainbow pattern stripes.

[0057] For example, the optical waveguide to be tested can be an optical waveguide used in near-eye display devices such as augmented reality display devices and virtual reality display devices.

[0058] In this embodiment, to improve the accuracy and authenticity of the detection results of the optical waveguide detection system, on the one hand, a light source module 11 simulating ambient light is mounted on a multi-axis robotic arm 10, and the multi-axis robotic arm 10 modulates the light emission angle of the light source module 11. On the other hand, a contoured workpiece 21 is mounted on a movable support component 22, and the setting parameters of the optical waveguide under test are calibrated using the contoured workpiece 21. Based on the calibrated setting parameters, the optical waveguide under test is mounted on the support component 22.

[0059] The following explains how the optical waveguide detection system provided in this application can improve the accuracy and authenticity of the detection results:

[0060] In this embodiment, a multi-axis robotic arm 10 is used to flexibly adjust the light emission angle of the light source module 11. The multi-axis robotic arm 10 has the advantage of multiple degrees of freedom. With the coordinated operation between its various axes, it can achieve precise movement and rotation operations, thereby enabling arbitrary and accurate control of the pitch and azimuth angles of the light source module 11.

[0061] In the test scenario constructed in this application embodiment, the light source module 11 can simulate incident light from different directions in the environment. Whether it's ambient light originating from the world side and having a wide spatial distribution, or ambient light closer to the human eye and having a more direct impact on visual perception, it can all be accurately reproduced by the light source module 11. When the multi-axis robotic arm 10 is controlled to move by the control module 4, the light source module 11 emits light at a preset emission angle. When the light emitted by the light source module 11 is incident on the waveguide under test, it will generate corresponding rainbow patterns under specific emission angle conditions, providing a realistic and controllable detection basis for subsequent analysis and research of the rainbow patterns.

[0062] In this embodiment, a design is adopted in which the light source module 11 is mounted on the multi-axis robotic arm 10. This light source module 11 has powerful simulation capabilities and can accurately reproduce incident light from different directions in the environment. For example, in use, if the design information of the optical waveguide and the light source angle test requirements of the rainbow pattern are clear, the multi-axis robotic arm 10 is controlled by the control module 4 to move so that the light source module 11 emits light at a preset light emission angle.

[0063] Compared to existing technologies, when using discrete lamp source groups to emit light, the layout and number of lamp sources can easily lead to the omission of certain angles of incident light with key characteristics, resulting in incomplete and inaccurate test results. The light source module 11 in this application can effectively avoid this drawback by utilizing the flexible control of the multi-axis robotic arm 10.

[0064] Compared to existing technologies, simulating the "rise in the east and set in the west" phenomenon of ambient light over time requires frequent and tedious manual adjustments to the incident direction of the ring light source in terms of latitude and longitude. This is not only inefficient but also prone to affecting the accuracy of the simulation due to human error. The embodiments of this application, through the automated and precise control of the light source module 11 by a multi-axis robotic arm 10, can easily and efficiently simulate the changes of ambient light at different times and in different directions, improving the reliability and convenience of the test.

[0065] Furthermore, in this embodiment, the sample assembly 2 under test includes a movable carrier assembly 22, a contoured workpiece 21, and the optical waveguide under test. When the contoured workpiece 21 calibrates the setting parameters of the optical waveguide under test, it is positioned on the carrier assembly 22. The contoured workpiece 21 is designed based on the specific structure and shape of the optical waveguide under test, and the two are highly compatible in size, shape, and key features. This compatibility allows the contoured workpiece 21 to accurately simulate the installation state of the optical waveguide under test on the carrier assembly 22. When the contoured workpiece 21 is correctly placed on the carrier assembly 22, it is equivalent to finding a "standard template" installation position for the optical waveguide under test, thereby ensuring that the optical waveguide under test can be set according to this precise position during actual installation.

[0066] Furthermore, since the contour workpiece 21 can accurately simulate the installation state of the optical waveguide under test, the ideal position and parameters are determined during the calibration stage. This eliminates the need for repeated adjustments and friction during the process of figuring out the installation position of the optical waveguide under test, thereby minimizing the risk of damage or wear during the installation process and effectively ensuring the integrity and performance stability of the optical waveguide under test.

[0067] In this embodiment, the support component 22 is movable. When calibration of the optical waveguide under test parameters is required, it is accomplished using the contour workpiece 21. Specifically, the contour workpiece 21 is placed on the movable support component 22.

[0068] During this process, the control module 4 can control the carrier component 22 to move, including swinging or rotating. When the carrier component 22 performs corresponding actions according to the instructions of the control module 4, the contour workpiece 21 can accurately calibrate the setting parameters required for the optical waveguide under test based on its structure and function.

[0069] After calibration, the optical waveguide under test is installed onto the carrier component 22 according to the calibrated settings. Specifically, after the process of calibrating the settings of the optical waveguide under test is completed by setting the contour workpiece 21 on the carrier component 22, the setting position of the carrier component 22 is basically determined. At this time, the contour workpiece 21 is removed, and the optical waveguide under test is set on the carrier component 22 with the position determined.

[0070] This installation method ensures the most accurate positioning of the waveguide under test on the carrier component 22 (for example, when the waveguide testing system needs to test the waveguide lens of a wearer's near-eye display device, the position of the waveguide under test simulates the actual position of the waveguide lens when the wearer is wearing the near-eye display device). This effectively improves the accuracy and authenticity of the results obtained by the testing system during the testing process, providing a guarantee for the evaluation of waveguide performance.

[0071] In one optional embodiment, the detection of optical waveguide lenses worn by a wearer in a near-eye display device using an optical waveguide detection system is used as an example for illustration:

[0072] The control module 4 controls the movement of the support component 22. Specifically, the control module 4 controls the movement of the support component 22 based on preset parameters, so that the contour workpiece 21 is placed on the support component 22 to calibrate the setting parameters of the optical waveguide under test. The specific process is as follows:

[0073] The control module 4 generates motion commands—for example, the control module 4 sets specific swing or rotation angles, speeds, and accelerations based on preset parameters (the preset parameters may include, but are not limited to, the wearer's (wearing the near-eye display device) facial biometrics combined with the basic features of the contour workpiece 21, or the wearer's posture when using the near-eye display device combined with the basic features of the contour workpiece 21).

[0074] Control module 4 performs signal conversion and transmission—it converts specific swing or rotation angles, speeds, and accelerations into digital signals. Then, its internal digital-to-analog converter (DAC) converts these digital signals back into analog signals to drive the drive mechanism of the supporting component 22. The drive mechanism may be a motor, hydraulic cylinder, pneumatic cylinder, or piezoelectric ceramic actuator. Control module 4 sends appropriate control signals based on the type of actuator and control requirements.

[0075] Furthermore, in order to ensure that the support component 22 moves precisely according to the preset parameters, the control module 4 usually integrates position sensors (such as encoders, potentiometers or photoelectric sensors) to monitor the position information of the support component 22 in real time.

[0076] It should be emphasized that the specific control method of the control module 4 over the movement of the carrier component 22 is not limited to the specific process mentioned above. In fact, its control mechanism has a high degree of flexibility and diversity.

[0077] In this embodiment, an optical waveguide testing system is provided, comprising a light source assembly 1, a sample assembly 2, an imaging assembly 3, and a control module 4. The light source module 11 in the light source assembly 1 is mounted on a multi-axis robotic arm 10. Based on calibrated settings, the optical waveguide to be tested in the sample assembly 2 is positioned on a pre-defined support assembly 22, thus improving the accuracy and reliability of the test results.

[0078] In the specific embodiments of this application, reference is made to Figure 2 The contoured workpiece 21 includes a body portion 210 and a calibration component 211 disposed at the center of the body portion 210;

[0079] The calibration component 211 has a length dimension along the optical axis of the detection system, the length dimension being the same as the exit pupil distance of the waveguide under test, and the calibration component 211 has a radial dimension along the direction perpendicular to the optical axis of the detection system, the radial dimension being the same as the diameter of the lens aperture of the imaging component 3.

[0080] In this embodiment, the contour workpiece 21 includes a body 210 and a calibration component 211. The length of the calibration component 211 along the optical axis of the detection system is measured and matched to be the same as the eye relief of the waveguide under test. The eye relief is a key parameter in the optical system, directly affecting image quality and user experience. This design ensures that the eye relief position of the waveguide under test is accurately located during calibration and subsequent testing.

[0081] Simultaneously, the radial dimension of the calibration component 211, along the direction perpendicular to the optical axis of the detection system (i.e., parallel to the surface of the main body 210), is calculated and set to be equal to the diameter of the lens aperture of the imaging component 3. The center position of the eyebox of the waveguide under test is calibrated by the radial dimension of the calibration component 211. Specifically, since the diameter of the lens aperture is closely related to the light-gathering characteristics and imaging range of the optical system, the center position of the eyebox determines the effective area within which the wearer's eye can clearly observe the image presented by the waveguide. By setting the radial dimension of the calibration component 211 to be equal to the diameter of the lens aperture, the precise capture capability of the imaging component 3 of the optical path and imaging features can be used as a reference to accurately calibrate the center position of the eyebox of the waveguide under test, thereby providing a reliable basis for the accuracy and authenticity of subsequent waveguide testing results.

[0082] In the specific embodiments of this application, reference is made to Figure 1 and Figure 2 The supporting component 22 includes a mounting frame 221 and a connecting shaft 222. The mounting frame 221 is swayable relative to the connecting shaft 222, and the connecting shaft 222 is configured to rotate. The mounting frame 221 is used to mount the contoured workpiece 21 or the optical waveguide under test.

[0083] When the mounting frame 221 on which the contoured workpiece 21 is mounted swings relative to the connecting shaft 222, the contoured workpiece 21 is used to calibrate the concave angle (tilt) of the optical waveguide under test.

[0084] When the connecting shaft 222 drives the mounting frame 221 on which the contour workpiece 21 is mounted to rotate, the contour workpiece 21 is used to calibrate the surface warp of the optical waveguide under test.

[0085] In this embodiment, when the setting parameters of the optical waveguide under test are calibrated using the contoured workpiece 21, the contoured workpiece 21 is mounted on the mounting frame 221. After the contoured workpiece 21 is calibrated, it is removed from the mounting frame 221, at which point the optical waveguide under test is mounted on the mounting frame 221.

[0086] In this specific embodiment, by adjusting the swing angle α and rotation angle β of the carrier component 22, the tilt angle and warp angle of the optical waveguide under test are calibrated, so that the optical waveguide under test is in the correct angular orientation.

[0087] Specifically, when the mounting frame 221 with the contoured workpiece 21 is oscillating relative to the connecting shaft 222, the contoured workpiece 21, due to its height compatibility with the optical waveguide under test, can accurately calibrate the concave angle (tilt) of the optical waveguide under test. For example, after adjusting the mounting frame 221 with the contoured workpiece 21 to its initial position, the control module 4 controls the mounting frame 221 to oscillate relative to the connecting shaft 222. The oscillation amplitude can be set according to the actual testing requirements, and generally, it can oscillate multiple times within a certain range (e.g., ±5°). During the oscillation process, the position change of the contoured workpiece 21 is monitored in real time, and its concave angle data is recorded. Generally, the oscillation angle of the contoured workpiece 21 relative to the initial position corresponds to the concave angle (tilt) of the optical waveguide under test calibrated by the contoured workpiece 21.

[0088] When the connecting shaft 222 drives the mounting frame 221, on which the contour workpiece 21 is mounted, to rotate, the contour workpiece 21 calibrates the warp angle of the optical waveguide under test. For example, after completing the concave angle calibration, the control module 4 controls the connecting shaft 222 to drive the mounting frame 221, on which the contour workpiece 21 is mounted, to rotate. The rotation angle can be set according to the actual testing requirements, such as a full 360° rotation or a rotation within a specific angle range. Generally, the rotation angle of the contour workpiece 21 relative to its initial position corresponds to the warp angle of the optical waveguide under test calibrated by the contour workpiece 21.

[0089] In one specific embodiment, refer to Figure 2 First: The contoured workpiece 21 is loaded into the mounting frame 221. The swing angle α and rotation angle β of the bearing component 22 are adjusted by the control module 4 to calibrate the concave angle (tilt) and surface bend angle (warp) of the optical waveguide under test, so that the optical waveguide under test is in the correct angular orientation.

[0090] Next, move the xyz axis of the first support 23 to align the calibration component 211 on the contour workpiece 21 with the aperture of the lens stop, and calibrate the exit pupil distance (eyerelief) and the center position of the eyebox of the optical waveguide under test.

[0091] Finally, after calibrating the eye relief, eyebox, tilt, and warp, remove the contour workpiece 21 from the mounting frame 221 and install the waveguide under test onto the mounting frame 221 based on the calibrated settings (eye relief, eyebox, tilt, and warp).

[0092] In a further embodiment of this application, reference is made to Figure 1The sample assembly 2 to be tested also includes a first support base 23, and the connecting shaft 222 is rotatably disposed on the first support base 23.

[0093] In this embodiment, the first support 23 and the connecting shaft 222 are rotatably connected, for example, by using a bearing or a similar rotating mechanism, allowing the connecting shaft 222 to rotate on the first support 23. This rotational flexibility allows the mounting frame 221 to drive the contoured workpiece 21 to rotate, thereby calibrating the setting parameters of the optical waveguide under test.

[0094] In a further embodiment of this application, the first support 23 is disposed on a three-dimensional displacement platform.

[0095] In this embodiment, the three-dimensional displacement platform can achieve displacement adjustment in the X, Y, and Z directions. This allows the first support 23 and its connecting shaft 222, mounting frame 221, and contour workpiece 21 to move freely in space, thereby enabling the contour workpiece 21 to be quickly and accurately positioned to a specific location according to actual testing needs. For example, when calibrating the optical waveguide under test, if it is necessary to adjust the relative position between the contour workpiece 21 and the imaging component 3, this can be easily achieved by operating the three-dimensional displacement platform without reinstalling or adjusting the entire sample component 2 under test.

[0096] In the specific embodiments of this application, reference is made to Figure 1 The multi-axis robotic arm 10 is a six-axis robotic arm.

[0097] In this embodiment, the six-axis robotic arm has six rotary joints, each of which can move independently, enabling the end effector of the robotic arm (used in this embodiment to mount the light source module 11) to achieve complex and flexible motion trajectories in three-dimensional space. Thus, the light emitted from the light source module 11 located at the end of the robotic arm can simulate incident light from different sources in the environment.

[0098] For example, the light source module 11 includes a clamping fixture 111 and a light source module 112. The clamping fixture 111 is mounted on the end of the robotic arm, and the light source module 112 is mounted on the clamping fixture 111. For example, the light source module 112 can be a white light collimated light source.

[0099] In addition, the light source module 11 needs to be adjusted before the optical waveguide testing system can test the optical waveguide under test.

[0100] For example, the light source module 11 is mounted on the clamping fixture 111, and the clamping fixture 111 makes the optical axis of the light source module 11 coaxial with the center normal of the front end face of the robotic arm.

[0101] The control module 4 adjusts the emission direction of the light source. For example, the control module 4 adjusts the elevation angle θ and azimuth angle φ of the light emitted from the light source module 112 so that the emission angle of the light emitted from the light source module 112 meets the detection requirements of the optical waveguide under test.

[0102] In a specific embodiment of this application, the light source assembly 1 further includes a second support base 12, the multi-axis robotic arm 10 is disposed on the second support base 12, and the second support base 12 is disposed on a two-dimensional displacement platform.

[0103] In this embodiment, the two-dimensional displacement platform works in conjunction with the second support base 12 and the six-axis robotic arm to ensure that the angle of the light emitted from the light source module 11 in the light source assembly 1 meets the detection requirements of the optical waveguide under test.

[0104] In a specific embodiment of this application, the shooting component 3 includes a third support 31 and a shooting module 30, wherein the shooting module 30 is disposed on the third support 31, and the third support 31 is disposed on a three-dimensional displacement platform.

[0105] In this embodiment, the imaging module 30 is mounted on the third support 31 and is used to adjust the relative position of the imaging module 30 and the optical waveguide under test. For example, by adjusting the position of the third support 31, the imaging module 30 is positioned on one side of the center position of the eye box of the optical waveguide under test.

[0106] For example, the imaging module 30 may include an imaging colorimeter 301 and an optical lens 302. The optical lens 302 is capable of clearly imaging the image of the sample component 2 to be tested onto the sensor of the imaging colorimeter 301, and the imaging colorimeter 301 stores the rainbow pattern image.

[0107] <Method Implementation>

[0108] This application also provides an optical waveguide detection method. The optical waveguide detection method is based on the optical waveguide detection system described above, and refers to… Figure 4 The optical waveguide detection method includes the following steps:

[0109] S1: Control the movement of the carrier component 22 to calibrate the setting parameters of the optical waveguide under test using the contoured workpiece 21, wherein the optical waveguide under test is disposed on the carrier component 22;

[0110] S2: Control the light source component 1 to emit light rays to the light wave to be tested at a preset light emission angle;

[0111] S3: Control the imaging component 3 to acquire rainbow pattern images formed by light rays at different emission angles received by the optical waveguide under test;

[0112] S4: Acquire the rainbow pattern image captured by the shooting component 3, and determine the parameters of the rainbow pattern image according to different preset light emission angles.

[0113] In step S1, by controlling the movement trajectory and speed of the carrier component 22, it is possible to calibrate the setting parameters of the optical waveguide under test using the contour workpiece 21 in a predetermined manner. The setting parameters include the exit pupil distance (eyerelief), eyebox, tilt angle, and warp angle.

[0114] When the conforming workpiece 21 completes the calibration process, the conforming workpiece 21 is removed from the carrier component 22, and the optical waveguide to be tested is installed on the carrier component 22.

[0115] In step S2, the light emission angle of the light source module 112 can be precisely adjusted by controlling the joint movement of the multi-axis robotic arm 10 and the movement of the two-dimensional displacement platform. The preset light emission angle is pre-set according to the detection requirements of the optical waveguide. Different light emission angles can simulate different lighting conditions that the optical waveguide may encounter in actual applications, thereby comprehensively evaluating the rainbow pattern parameters generated by the optical waveguide under test.

[0116] In step S3, after the light source assembly 1 emits light at a preset emission angle, the imaging module 30 acquires a real-time image of the rainbow pattern on the surface of the waveguide under test. Specifically, the imaging colorimeter 301 measures the color and brightness information of the rainbow pattern, while the optical lens 302 clearly images the rainbow pattern onto the sensor of the imaging colorimeter 301. By processing the electrical signals acquired by the sensor, a digital image of the rainbow pattern can be obtained.

[0117] In step S4, the rainbow image is analyzed according to different preset light emission angles to determine the parameters of the rainbow image. These parameters may include the color distribution, brightness distribution, stripe spacing, and stripe shape of the rainbow. For example, by performing color analysis on the rainbow image, the chromaticity coordinates and brightness values ​​of different color regions can be obtained.

[0118] In this application embodiment, an optical waveguide testing method is provided. The optical waveguide testing method sets the light source module 11 on the multi-axis robotic arm 10. The light emitted by the light source module 11 can simulate incident light from different sources in the environment, thereby improving the reliability and authenticity of the test. In addition, the testing method provided in this application uses a contoured workpiece 21 to calibrate the setting parameters of the optical waveguide under test, so that the optical waveguide under test is set on the carrier component 22. For example, the contoured workpiece 21 can calibrate the actual position of the optical waveguide lens when the wearer wears a near-eye display device, which can ensure the accuracy of the installation position of the optical waveguide under test on the carrier component 22, thereby improving the accuracy and authenticity of the test results.

[0119] In a specific embodiment of this application, controlling the movement of the supporting component 22 to calibrate the setting parameters of the optical waveguide under test using the conformal workpiece 21 includes:

[0120] Control the swing of the support component 22 that mounts the contoured workpiece 21 to calibrate the concave angle of the optical waveguide under test;

[0121] The bearing assembly 22, which is mounted on the contoured workpiece 21, is rotated to calibrate the surface bend angle of the optical waveguide under test.

[0122] In this embodiment, by adjusting the swing angle α and rotation angle β of the carrier component 22, the tilt angle and warp angle of the optical waveguide under test are calibrated so that the optical waveguide under test is in the correct angular orientation.

[0123] In one specific embodiment, refer to Figure 1 and Figure 2 The support assembly 22 includes a mounting frame 221 and a connecting shaft 222. The mounting frame 221 is oscillating relative to the connecting shaft 222, and the connecting shaft 222 is configured to rotate. When the contoured workpiece 21 is mounted on the mounting frame 221, the mounting frame 221 with the contoured workpiece 21 mounted is controlled to oscillate relative to the connecting shaft 222, so that the contoured workpiece 21 can calibrate the tilt angle of the optical waveguide under test; and the connecting shaft 222 is controlled to drive the mounting frame 221 with the contoured workpiece 21 mounted to rotate, so that the contoured workpiece 21 can calibrate the warp angle of the optical waveguide under test.

[0124] In a specific embodiment of this application, controlling the movement of the supporting component 22 to calibrate the setting parameters of the optical waveguide under test using the conformal workpiece 21 further includes:

[0125] The contour workpiece 21 includes a body part 210 and a calibration component 211 disposed at the center of the body part 210;

[0126] The circumferential contour of the calibration component 211 of the contoured workpiece 21 is set relative to the lens aperture contour in the imaging assembly 3 to calibrate the exit pupil distance and the center position of the eye box of the waveguide under test.

[0127] In this embodiment, the contour workpiece 21 includes a body 210 and a calibration component 211. The length of the calibration component 211 along the optical axis of the detection system is measured and matched to be completely consistent with the eye relief of the waveguide under test. The radial dimension of the calibration component 211 along the direction perpendicular to the optical axis of the detection system is also calculated and set to be equal to the diameter of the lens aperture of the imaging component 3.

[0128] In this embodiment, since the length of the calibration component 211 is consistent with the exit pupil distance of the optical waveguide under test, by controlling the circumferential contour of the calibration component 211 of the contoured workpiece 21 to be set relative to the lens aperture contour in the imaging assembly 3, the exit pupil distance and the center position of the eye box of the optical waveguide under test can be calibrated by the calibration component 211.

[0129] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the optical waveguide detection methods provided in the above-described method embodiments.

[0130] This application may be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this application.

[0131] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination thereof. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0132] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0133] The computer program instructions used to perform the operations of this application may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuits, such as programmable logic circuits, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), are personalized by utilizing state information from the computer-readable program instructions. These electronic circuits can execute the computer-readable program instructions to implement various aspects of this application.

[0134] Various aspects of this application are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0135] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0136] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0137] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions. It will be well known to those skilled in the art that implementation in hardware, implementation in software, and implementation using a combination of software and hardware are equivalent.

[0138] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this application is defined by the appended claims.

Claims

1. An optical waveguide detection system, characterized in that, include: The light source assembly (1) includes a multi-axis robotic arm (10) and a light source module (11) disposed on the multi-axis robotic arm (10), wherein the multi-axis robotic arm (10) adjusts the light emission angle of the light source module (11); The sample assembly (2) to be tested includes a movable carrier assembly (22), a contoured workpiece (21), and a waveguide to be tested. The contoured workpiece (21) is detachably mounted on the carrier assembly (22) to calibrate the setting parameters of the waveguide to be tested. The waveguide to be tested is mounted on the carrier assembly (22), and the light emitted from the light source module (11) is incident on the waveguide to be tested to form a rainbow pattern. The contoured workpiece (21) includes a body part (210) and a calibration component (211) disposed at the center of the body part (210). The calibration component (211) has a length dimension along the optical axis of the detection system, the length dimension being the same as the exit pupil distance of the optical waveguide under test, and the calibration component (211) has a radial dimension along the direction perpendicular to the optical axis of the detection system, the radial dimension being the same as the diameter of the lens aperture of the imaging assembly (3). The imaging component (3) is located on one side of the center of the eye box of the optical waveguide under test. The imaging component (3) is used to acquire the rainbow pattern image formed by the light rays received by the optical waveguide under test at different light-emitting angles. The control module (4) is communicatively connected to the imaging component (3), the carrier component (22), and the light source component (1). The control module (4) is used to control the carrier component (22) to move using the contour workpiece (21) to calibrate the setting parameters of the optical waveguide under test. The control module (4) is also used to control the light source component (1) to emit light to the optical waveguide under test at a preset light emission angle, acquire the rainbow pattern image captured by the imaging component (3), and determine the parameters of the rainbow pattern image according to different preset light emission angles.

2. The optical waveguide detection system according to claim 1, characterized in that, The support assembly (22) includes a mounting frame (221) and a connecting shaft (222). The mounting frame (221) is swayable relative to the connecting shaft (222), and the connecting shaft (222) is configured to rotate. The mounting frame (221) is used to mount the contoured workpiece (21) or the optical waveguide under test. When the mounting frame (221) on which the contoured workpiece (21) is mounted swings relative to the connecting shaft (222), the contoured workpiece (21) is used to calibrate the concave angle of the optical waveguide under test; When the connecting shaft (222) drives the mounting frame (221) on which the contour workpiece (21) is mounted to rotate, the contour workpiece (21) is used to calibrate the surface bend angle of the optical waveguide under test.

3. The optical waveguide detection system according to claim 2, characterized in that, The sample assembly (2) to be tested also includes a first support base (23), and the connecting shaft (222) is rotatably disposed on the first support base (23).

4. The optical waveguide detection system according to claim 3, characterized in that, The first support (23) is set on the three-dimensional displacement platform.

5. The optical waveguide detection system according to claim 1, characterized in that, The multi-axis robotic arm (10) is a six-axis robotic arm.

6. The optical waveguide detection system according to claim 1, characterized in that, The light source assembly (1) also includes a second support base (12), the multi-axis robotic arm (10) is disposed on the second support base (12), and the second support base (12) is disposed on a two-dimensional displacement platform.

7. The optical waveguide detection system according to claim 1, characterized in that, The shooting component (3) includes a third support base (31) and a shooting module (30). The shooting module (30) is disposed on the third support base (31), and the third support base (31) is disposed on a three-dimensional displacement platform.

8. A method for detecting optical waveguides, characterized in that, The optical waveguide detection method is based on the optical waveguide detection system as described in any one of claims 1-7, and the optical waveguide detection method includes: The movement of the carrier component (22) is controlled by the contour workpiece (21) to calibrate the setting parameters of the optical waveguide under test, which is disposed on the carrier component (22). Control the light source assembly (1) to emit light rays to the light wave to be tested at a preset light emission angle; The camera component (3) is controlled to acquire rainbow images formed by light rays at different emission angles received by the optical waveguide under test; The rainbow pattern image captured by the shooting component (3) is obtained, and the parameters of the rainbow pattern image are determined according to different preset light emission angles.

9. The optical waveguide detection method according to claim 8, characterized in that, Controlling the movement of the carrier component (22) using the contoured workpiece (21) to calibrate the setting parameters of the optical waveguide under test includes: Control the swing of the support component (22) that mounts the contoured workpiece (21) to calibrate the concave angle of the optical waveguide under test; The bearing assembly (22) on which the contour workpiece (21) is mounted is rotated to calibrate the surface bend angle of the optical waveguide under test.

10. The optical waveguide detection method according to claim 9, characterized in that, Controlling the movement of the carrier component (22) and using the contoured workpiece (21) to calibrate the setting parameters of the optical waveguide under test further includes: The contoured workpiece (21) includes a body part (210) and a calibration component (211) disposed at the center of the body part (210). The circumferential contour of the calibration component (211) of the contoured workpiece (21) is set relative to the lens aperture contour in the imaging component (3) to calibrate the exit pupil distance and the center position of the eye box of the waveguide under test.

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