Optical waveguide detection system and detection method

Abstract

The embodiment of the invention provides an optical waveguide detection system and detection method. The optical waveguide detection system comprises: a light source assembly comprising a multi-axis mechanical arm and a light source module, wherein the multi-axis mechanical arm adjusts the light emitting angle of the light source module; the to-be-tested sample assembly comprises a bearing assembly, a profiling workpiece and a to-be-tested optical waveguide, and the profiling workpiece calibrates setting parameters of the to-be-tested optical waveguide; the to-be-measured optical waveguide is arranged on the bearing assembly, and light emitted by the light source module enters the to-be-measured optical waveguide to form a rainbow pattern; the shooting assembly is used for acquiring a rainbow pattern image formed by light rays of different light emitting angles received by the optical waveguide to be measured; the control module is used for controlling the bearing assembly to move to pass through the profiling workpiece so as to calibrate setting parameters of the optical waveguide to be measured, and the control module is used for controlling the light source assembly to emit light to the optical waveguide to be measured at a preset light emitting angle so as to obtain a rainbow pattern image shot by the shooting assembly; and determining parameters of the rainbow pattern image according to different preset light emitting angles.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of optical waveguide technology, and more specifically, to an optical waveguide detection system and a detection method. Background Art

[0002] When a user uses a near-eye display device, light of a specific wavelength enters the device's optical waveguide structure at a specific angle. The waveguide then diffracts these rays, and the light is constantly reflected as it propagates within the waveguide. These two optical effects combine to create rainbow patterns, which can be seen by the human eye as distinct rainbow fringes. This not only interferes with the waveguide's display quality, causing image artifacts, but also significantly impacts the user experience and reduces satisfaction with the near-eye display device.

[0003] Existing rainbow pattern detection systems have significant limitations. They struggle to accurately and realistically simulate complex scenarios involving ambient light from varying incident directions projecting onto a diffractive light guide. Furthermore, they are unable to faithfully reproduce the actual placement of the diffractive light guide within a near-eye display. This directly reduces the accuracy and authenticity of the test results obtained by the detection system, making it difficult to effectively assess the actual impact of rainbow patterns on the display.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the Invention

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

[0006] In a first aspect, embodiments of the present application provide an optical waveguide detection system. The optical waveguide detection system includes: a light source assembly, including 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 output angle of the light source module;

[0007] The sample assembly to be tested includes a movable supporting assembly, a profiling workpiece, and an optical waveguide to be tested. The profiling workpiece is detachably mounted on the supporting assembly and is mounted on the supporting assembly to calibrate the setting parameters of the optical waveguide to be tested. The optical waveguide to be tested is mounted on the supporting assembly and receives light emitted by the light source module to form rainbow patterns.

[0008] A shooting component, located on one side of the center of the eye box of the optical waveguide to be measured, and used to obtain rainbow pattern images formed by the optical waveguide to be measured receiving light at different light emission angles;

[0009] A control module is communicatively connected to the shooting component, the carrying component and the light source component. The control module is used to control the movement of the carrying component to use the profiling workpiece to calibrate the setting parameters of the optical waveguide to be measured, and the control module is used to control the light source component to emit light toward the optical waveguide to be measured at a preset light output angle, obtain the rainbow pattern image captured by the shooting component, and determine the parameters of the rainbow pattern image according to different preset light output angles.

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

[0011] The calibration component has a length dimension along the optical axis of the detection system, which is the same as the exit pupil distance of the optical waveguide to be measured, and the calibration component has a radial dimension along a direction perpendicular to the optical axis of the detection system, which is the same as the diameter of the lens aperture of the shooting assembly.

[0012] Optionally, the bearing assembly includes a mounting frame and a connecting shaft, the mounting frame can swing relative to the connecting shaft, and the connecting shaft is configured to be rotatable; the mounting frame is used to mount the contoured workpiece or the optical waveguide to be measured;

[0013] When the mounting frame on which the profiling workpiece is mounted is swung relative to the connecting shaft, the profiling workpiece is used to calibrate the inner concave angle of the optical waveguide to be measured;

[0014] When the connecting shaft drives the mounting frame on which the profiling workpiece is mounted to rotate, the profiling workpiece is used to calibrate the surface bending angle of the optical waveguide to be measured.

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

[0016] Optionally, the first support seat is arranged 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, the multi-axis robotic arm is disposed on the second support base, and 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, the shooting module is arranged on the third support base, and the third support base is arranged on the three-dimensional displacement platform.

[0020] In a second aspect, an embodiment of the present application further provides an optical waveguide detection method. The optical waveguide detection method is based on the optical waveguide detection system as described in the first aspect, and the optical waveguide detection method includes:

[0021] Controlling the movement of the bearing assembly to calibrate the setting parameters of the optical waveguide to be measured by using the profiling workpiece, wherein the optical waveguide to be measured is set on the bearing assembly;

[0022] Controlling the light source assembly to emit light toward the optical waveguide to be measured at a preset light output angle;

[0023] Controlling the shooting component to obtain rainbow pattern images formed by the optical waveguide to be measured receiving light rays at different light-emitting angles;

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

[0025] Optionally, controlling the movement of the carrying assembly to calibrate the setting parameters of the optical waveguide to be measured by using the profiling workpiece includes:

[0026] Controlling the swing of the bearing assembly on which the profiling workpiece is mounted to calibrate the inner concave angle of the optical waveguide to be measured;

[0027] The bearing assembly on which the profiling workpiece is mounted is controlled to rotate, and the surface bending angle of the optical waveguide to be measured is calibrated.

[0028] Optionally, controlling the movement of the carrying assembly to calibrate the setting parameters of the optical waveguide to be measured by using the profiling workpiece further includes:

[0029] The profiling workpiece includes a main body and a calibration component arranged at the center of the main body;

[0030] The circumferential profile of the calibration component of the profiling workpiece is controlled to be arranged relative to the aperture profile of the lens in the shooting assembly, so as to calibrate the exit pupil distance and the eye box center position of the optical waveguide to be measured.

[0031] The technical solution provided in the embodiments of this application provides an optical waveguide detection system, comprising a light source assembly, a test sample assembly, a camera assembly, and a control module. The light source module in the light source assembly is mounted on a multi-axis robotic arm. Based on calibration parameters for the profiling workpiece, the optical waveguide to be tested in the test sample assembly is positioned on a pre-determined support assembly, thereby improving the accuracy and authenticity of the test results.

[0032] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0035] Figure 2 Shown is a structural diagram of the sample assembly to be tested provided in an embodiment of the present application.

[0036] Figure 3 FIG. 1 is a block diagram of the structure of an optical waveguide detection system provided in an embodiment of the present application.

[0037] Figure 4 FIG. 1 is a flow chart of an optical waveguide detection method provided in an embodiment of the present application.

[0038] Description of reference numerals:

[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. Specimen assembly to be tested; 21. Profiling workpiece; 22. Carrying assembly; 23. First support seat; 210. Main body; 211. Calibration component; 221. Mounting frame; 222. Connecting shaft;

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

[0042] 4. Control module. DETAILED DESCRIPTION

[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 arrangements of components and steps, numerical expressions and numerical values ​​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 in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0045] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

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

[0047] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0048] <System Example>

[0049] The embodiment of the present application provides an optical waveguide detection system. Figure 1 and Figure 3 The optical waveguide detection system includes: a light source component 1, a sample component 2 to be tested, a shooting 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 output angle of the light source module 11 .

[0051] The sample assembly 2 includes a removably mounted support assembly 22, a profiling workpiece 21, and an optical waveguide to be tested. The profiling workpiece 21 is detachably mounted on the support assembly 22 and is used to calibrate the parameters of the optical waveguide to be tested. The optical waveguide to be tested is mounted on the support assembly 22, and light emitted by the light source module 11 is incident on the optical waveguide to be tested, forming rainbow patterns.

[0052] After the profiling workpiece 21 is placed on the carrier assembly 22 and the setting parameters of the optical waveguide to be measured are calibrated, the placement of the carrier assembly 22 is essentially determined. At this point, the profiling workpiece 21 is removed, and the optical waveguide to be measured is placed on the carrier assembly 22 with the determined position. Specifically, after the profiling workpiece 21 is placed on the carrier assembly 22 and the setting parameters of the optical waveguide to be measured are calibrated, the optical waveguide to be measured is placed on the carrier assembly 22 according to the calibrated setting parameters.

[0053] The shooting component 3 is located on one side of the center of the eye box of the optical waveguide to be measured, and the shooting component 3 is used to obtain rainbow pattern images formed by the optical waveguide to be measured receiving light with different light output angles.

[0054] The control module 4 is communicatively connected with the shooting component 3, the carrying component 22 and the light source component 1. The control module 4 is used to control the movement of the carrying component 22 to use the profiling workpiece 21 to calibrate the setting parameters of the optical waveguide to be measured, and the control module 4 is used to control the light source component 1 to emit light to the optical waveguide to be measured at a preset light output angle, obtain the rainbow pattern image captured by the shooting component 3, and determine the parameters of the rainbow pattern image according to different preset light output angles.

[0055] In an embodiment of the present application, the optical waveguide detection system is used to detect parameters of a rainbow fringe image of an optical waveguide to be tested. The parameters of the rainbow fringe image can reflect the characteristics of the rainbow fringe formed by the optical waveguide during imaging.

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

[0057] For example, the optical waveguide to be detected may be an optical waveguide used in a near-eye display device such as an augmented reality display device or a virtual reality display device.

[0058] In the embodiment of the present application, to improve the accuracy and authenticity of the test results of the optical waveguide detection system, on the one hand, a light source module 11 that simulates external ambient light is installed on a multi-axis robotic arm 10, and the multi-axis robotic arm 10 modulates the light output angle of the light source module 11. On the other hand, a profiling workpiece 21 is installed on a movable supporting assembly 22. The setting parameters of the optical waveguide to be tested are calibrated using the profiling workpiece 21, and the optical waveguide to be tested is installed on the supporting assembly 22 according to the calibrated setting parameters.

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

[0060] In the embodiment of the present application, a multi-axis robotic arm 10 is used to flexibly adjust the light output angle of the light source module 11. The multi-axis robotic arm 10 has the advantage of multiple degrees of freedom. By virtue of the coordination between its axes, it can achieve precise movement and rotation operations, thereby being able to arbitrarily and accurately adjust the pitch and azimuth angles of the light source module 11.

[0061] In the test scenario constructed in the embodiment of the present application, the light source module 11 can simulate incident light from different directions in the environment. Whether it is ambient light originating from the world side with a wide spatial distribution, or ambient light close to the human eye side that has a more direct impact on visual perception, it can 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 light output angle. The light emitted by the light source module 11 is incident on the optical waveguide to be tested, and corresponding rainbow patterns will be generated under specific light output angle conditions, providing a real and controllable detection basis for subsequent analysis and research on rainbow patterns.

[0062] Specifically, in this embodiment, a light source module 11 is mounted on a multi-axis robotic arm 10. This light source module 11 possesses powerful simulation capabilities, accurately reproducing incident light from various directions in the environment. For example, during use, the design information for the optical waveguide and the light source angle test requirements for rainbow patterns are clearly defined. The control module 4 controls the movement of the multi-axis robotic arm 10, ensuring that the light source module 11 emits light at a preset angle.

[0063] Compared to existing technologies, when using discrete light source groups to emit light, the layout and number of light sources are limited, making it very easy to miss certain angles of incident light with key characteristics, resulting in incomplete and inaccurate test results. The light source module 11 in this application, with the help of the flexible control of the multi-axis robotic arm 10, can effectively avoid this drawback.

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

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

[0066] In addition, since the contoured workpiece 21 can accurately simulate the installation state of the optical waveguide to be measured, the ideal position and parameters are determined during the calibration stage, so that the optical waveguide to be measured does not need to be repeatedly adjusted and rubbed during the process of groping for the installation position, thereby minimizing the risk of damage or wear during the installation process, and effectively ensuring the integrity and performance stability of the optical waveguide to be measured.

[0067] In the embodiment of the present application, the supporting assembly 22 is movable. When calibration of the optical waveguide setting parameters is required, the profiling workpiece 21 is used to perform the calibration. During the calibration, the profiling workpiece 21 is placed on the movable supporting assembly 22.

[0068] During this process, the control module 4 can control the movement of the carrier assembly 22, which can include swinging or rotating. When the carrier assembly 22 performs corresponding actions according to the instructions of the control module 4, the contoured workpiece 21 can accurately calibrate the required setting parameters of the optical waveguide to be measured based on its structure and function.

[0069] After calibration is complete, the optical waveguide to be measured is mounted on the carrier assembly 22 according to the calibrated setting parameters. Specifically, after the profiling workpiece 21 is placed on the carrier assembly 22 and the setting parameters of the optical waveguide to be measured are calibrated, the placement of the carrier assembly 22 is basically determined. At this point, the profiling workpiece 21 is removed, and the optical waveguide to be measured is placed on the carrier assembly 22 with the determined position.

[0070] This installation method can ensure, to the greatest extent possible, that the position of the optical waveguide to be tested on the carrier assembly 22 is accurate. (For example, when the optical waveguide detection system needs to detect the optical waveguide lenses of a wearer wearing a near-eye display device, the placement of the optical waveguide to be tested simulates the actual position of the optical waveguide lenses when the wearer wears the near-eye display device.) This effectively improves the accuracy and authenticity of the results obtained by the detection system during the detection process, providing a guarantee for the evaluation of optical waveguide performance.

[0071] In an optional embodiment, the optical waveguide detection system is used to detect the optical waveguide lens of a wearer wearing a near-eye display device as an example for explanation:

[0072] The control module 4 controls the movement of the carrier assembly 22. Specifically, the control module 4 controls the movement of the carrier assembly 22 based on preset parameters so that the profiling workpiece 21 is placed on the carrier assembly 22 to calibrate the setting parameters of the optical waveguide to be measured. The specific process can be as follows:

[0073] The control module 4 generates motion instructions—for example, the control module 4 sets specific parameters such as swing or rotation angle, speed, and acceleration based on preset parameters (the preset parameters may include but are not limited to: the facial biometric features of the wearer (wearing the near-eye display device) combined with the basic features of the profiling workpiece 21, or the wearer's usage posture when using the near-eye display device combined with the basic features of the profiling workpiece 21).

[0074] The control module 4 performs signal conversion and transmission. The control module 4 converts parameters such as specific swing or rotation angles, speeds, and accelerations into digital signals. These signals are then converted into analog signals via an internal digital-to-analog converter (DAC) to drive the drive mechanism of the carrier assembly 22. The drive mechanism can be a motor, hydraulic cylinder, pneumatic cylinder, or piezoelectric ceramic actuator. The control module 4 sends appropriate control signals based on the actuator type and control requirements.

[0075] Furthermore, in order to ensure that the supporting assembly 22 moves accurately according to preset parameters, the control module 4 usually integrates a position sensor (such as an encoder, a potentiometer, or a photoelectric sensor) to monitor the position information of the supporting assembly 22 in real time.

[0076] It should be emphasized that the specific control method of the control module 4 on the movement of the carrier assembly 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 an embodiment of the present application, an optical waveguide detection system is provided, comprising a light source assembly 1, a sample assembly 2, a camera assembly 3, and a control module 4. Light source module 11 in light source assembly 1 is mounted on a multi-axis robotic arm 10. Based on calibrated setting parameters, the optical waveguide to be tested in sample assembly 2 is positioned on a carrier assembly 22, which has been precisely positioned. This improves the accuracy and authenticity of the test results.

[0078] In the specific embodiments of this application, refer to Figure 2 The profiling workpiece 21 includes a main body 210 and a calibration component 211 disposed at the center of the main body 210;

[0079] The calibration component 211 has a length dimension along the optical axis of the detection system, which is the same as the exit pupil distance of the optical waveguide to be measured, and the calibration component 211 has a radial dimension along a direction perpendicular to the optical axis of the detection system, which is the same as the diameter of the lens aperture of the shooting component 3.

[0080] In this embodiment, the profiling workpiece 21 comprises a main body 210 and a calibration component 211. The length of the calibration component 211, along the optical axis of the detection system, has been measured and matched to the eye relief of the optical waveguide under test. The eye relief, a key parameter in optical systems, directly impacts imaging quality and user experience. This design ensures that the eye relief of the optical waveguide under test is accurately located during calibration and subsequent testing.

[0081] At the same time, the radial dimension of the calibration component 211, 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 camera assembly 3. The radial dimension of the calibration component 211 is used to calibrate the center position of the eyebox of the optical waveguide to be tested. Specifically, because the lens aperture diameter is closely related to the light intake characteristics and imaging range of the optical system, the eyebox center position determines the effective area within a specific range where the wearer's eye can clearly observe the image presented by the optical waveguide. By setting the radial dimension of the calibration component 211 equal to the lens aperture diameter, the camera assembly 3's ability to accurately capture the optical path and imaging characteristics can be used as a reference to accurately calibrate the eyebox center position of the optical waveguide to be tested, thereby providing a reliable basis for the accuracy and authenticity of subsequent optical waveguide testing results.

[0082] In the specific embodiments of this application, refer to Figure 1 and Figure 2 The carrying assembly 22 includes a mounting frame 221 and a connecting shaft 222. The mounting frame 221 can swing relative to the connecting shaft 222, and the connecting shaft 222 is configured to be rotatable. The mounting frame 221 is used to mount the profiling workpiece 21 or the optical waveguide to be measured.

[0083] When the mounting frame 221 on which the profiling workpiece 21 is mounted swings relative to the connecting shaft 222, the profiling workpiece 21 calibrates the tilt of the optical waveguide to be measured;

[0084] When the connecting shaft 222 drives the mounting frame 221 on which the profiling workpiece 21 is mounted to rotate, the profiling workpiece 21 calibrates the warp angle of the optical waveguide to be measured.

[0085] In this embodiment, when the setting parameters of the optical waveguide to be measured are calibrated by the profiling workpiece 21, the profiling workpiece 21 is mounted on the mounting frame 221. After the profiling workpiece 21 is calibrated, the profiling workpiece 21 is removed from the mounting frame 221, and the optical waveguide to be measured is now mounted on the mounting frame 221.

[0086] In this specific embodiment, the tilt angle and warp angle of the optical waveguide to be measured are calibrated by adjusting the swing angle α and the rotation angle β of the carrier assembly 22 so that the optical waveguide to be measured is in a correct angular posture.

[0087] Specifically, when the mounting frame 221, on which the profiling workpiece 21 is mounted, swings relative to the connecting shaft 222, the profiling workpiece 21, thanks to its high compatibility with the optical waveguide to be measured, can accurately calibrate the tilt of the optical waveguide to be measured. For example, the mounting frame 221, on which the profiling workpiece 21 is mounted, is adjusted to an initial position. The control module 4 controls the mounting frame 221 to swing relative to the connecting shaft 222. The swing amplitude can be set according to actual detection requirements, and generally, multiple swings can be performed within a certain range (e.g., ±5°). During the swinging process, the position changes of the profiling workpiece 21 are monitored in real time, and its tilt data is recorded. Generally, the swing angle of the profiling workpiece 21 relative to the initial position corresponds to the tilt of the optical waveguide to be measured, as calibrated by the profiling workpiece 21.

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

[0089] In a specific embodiment, referring to Figure 2 First, the contoured workpiece 21 is loaded into the mounting frame 221. The control module 4 adjusts the swing angle α and the rotation angle β of the carrier assembly 22 to calibrate the tilt angle and the warp angle of the optical waveguide to be measured, so that the optical waveguide to be measured is in the correct angle posture.

[0090] Secondly, the xyz axes of the first support 23 are moved to align the calibration component 211 on the contoured workpiece 21 with the lens aperture, thereby calibrating the eye relief and eyebox center position of the optical waveguide to be measured.

[0091] Finally, after calibrating the pupil relief, eyebox, tilt, and warp, the contoured workpiece 21 is removed from the mounting frame 221, and the optical waveguide to be measured is mounted on the mounting frame 221 based on the calibrated setting parameters (eye relief, eyebox, tilt, and warp).

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

[0093] In this embodiment, a rotatable connection design is adopted between the first support base 23 and the connecting shaft 222, for example, a bearing or similar rotating mechanism is used, so that the connecting shaft 222 can rotate on the first support base 23. This rotational flexibility enables the mounting frame 221 to rotate the contoured workpiece 21, thereby achieving calibration of the setting parameters of the optical waveguide to be measured.

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

[0095] In this embodiment, the 3D displacement platform is capable of adjusting displacement in the X, Y, and Z directions. This allows the first support 23, its connecting shaft 222, mounting frame 221, and contoured workpiece 21 to move freely in space, enabling the contoured workpiece 21 to be quickly and accurately positioned to a specific location based on actual testing requirements. For example, when calibrating an optical waveguide to be tested, if the relative position between the contoured workpiece 21 and the imaging assembly 3 needs to be adjusted, this can be easily achieved by operating the 3D displacement platform, without having to reinstall or adjust the entire test sample assembly 2.

[0096] In the specific embodiments of this application, refer 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 rotating joints, each of which can move independently, allowing the robotic arm's end effector (in this embodiment, used to mount the light source module 11) to achieve complex and flexible motion trajectories in three-dimensional space. In this way, the light emitted by the light source module 11 at the end of the robotic arm can simulate incident light from different sources in the environment.

[0098] Exemplarily, 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 robot 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 collimated light source.

[0099] In addition, before the optical waveguide detection system detects the optical waveguide to be detected, the light source module 11 needs to be adjusted.

[0100] For example, the light source module 11 is mounted on the clamping fixture 111 , and the clamping fixture 111 is used to make the optical axis of the light source module 11 and the center normal of the front end surface of the robot arm coaxial.

[0101] The control module 4 adjusts the light source emission direction, for example, the control module 4 adjusts the pitch angle θ and azimuth angle φ of the light emitted by the light source module 112 so that the emission angle of the light emitted by the light source module 112 meets the detection requirements of the optical waveguide to be tested.

[0102] In a specific embodiment of the present 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 so that the light angle emitted by the light source module 11 in the light source assembly 1 meets the detection requirements of the optical waveguide to be tested.

[0104] In a specific embodiment of the present application, the shooting assembly 3 includes a third support base 31 and a shooting module 30. The shooting module 30 is arranged on the third support base 31, and the third support base 31 is arranged on a three-dimensional displacement platform.

[0105] In this embodiment, the shooting module 30 is set on the third support base 31, which is used to adjust the relative position of the shooting module 30 and the optical waveguide to be measured. For example, by adjusting the position of the third support base 31, the shooting module 30 is located on the side of the center position of the eye box of the optical waveguide to be measured.

[0106] Exemplarily, the shooting module 30 may include an imaging colorimeter 301 and an optical lens 302. The optical lens 302 can clearly image the image of the sample component 2 to be tested on the sensor of the imaging colorimeter 301, and the imaging colorimeter 301 stores the rainbow pattern image.

[0107] <Method Example>

[0108] The embodiment of the present application also provides an optical waveguide detection method. The optical waveguide detection method is based on the optical waveguide detection system as described above, referring to Figure 4 , the optical waveguide detection method comprises the following steps:

[0109] S1: Controlling the movement of the carrier assembly 22 to calibrate the setting parameters of the optical waveguide to be measured using the profiling workpiece 21, wherein the optical waveguide to be measured is set on the carrier assembly 22;

[0110] S2: Control the light source assembly 1 to emit light at a preset light output angle toward the optical waveguide to be measured;

[0111] S3: Controlling the photographing component 3 to obtain rainbow pattern images formed by the optical waveguide to be measured receiving light rays at different light emission angles;

[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 output angles.

[0113] In step S1, the motion trajectory and speed of the carrier assembly 22 are controlled so that the configuration parameters of the optical waveguide to be measured can be calibrated in a predetermined manner using the contoured workpiece 21, where the configuration parameters include the pupil relief and eyebox, the tilt angle, and the warp angle.

[0114] When the profiling workpiece 21 completes the calibration process, the profiling workpiece 21 is removed from the carrying assembly 22 , and the optical waveguide to be measured is mounted on the carrying assembly 22 .

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

[0116] In step S3, after the light source assembly 1 emits light at a preset angle, the camera module 30 captures a real-time image of the rainbow pattern on the surface of the optical waveguide to be measured. Specifically, the imaging colorimeter 301 measures the color and brightness of the rainbow pattern, while the optical lens 302 clearly captures the rainbow pattern on the imaging colorimeter's sensor. By processing the electrical signals collected by the sensor, a digital image of the rainbow pattern is generated.

[0117] In step S4, the rainbow image is analyzed based on different preset light output angles to determine the parameters of the rainbow image. These parameters may include the color distribution, brightness distribution, fringe spacing, fringe shape, etc. 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 an embodiment of the present application, a method for detecting an optical waveguide is provided. In the optical waveguide detection method, a light source module 11 is disposed on a multi-axis robotic arm 10. The light emitted by the light source module 11 can simulate incident light from different source directions in the environment, thereby improving the reliability and authenticity of the test. In addition, the detection method provided by the present application uses a profiling workpiece 21 to calibrate the setting parameters of the optical waveguide to be tested, so that the optical waveguide to be tested is disposed on a carrier assembly 22. For example, the profiling workpiece 21 can calibrate the actual position of the optical waveguide lens when the wearer wears a near-eye display device, thereby ensuring the accuracy of the installation position of the optical waveguide to be tested on the carrier assembly 22, thereby improving the accuracy and authenticity of the test results.

[0119] In a specific embodiment of the present application, controlling the movement of the carrier assembly 22 to calibrate the setting parameters of the optical waveguide to be measured by using the profiling workpiece 21 includes:

[0120] Controlling the support assembly 22 on which the profiling workpiece 21 is mounted to swing, and calibrating the inner concave angle of the optical waveguide to be measured;

[0121] The bearing assembly 22 on which the profiling workpiece 21 is mounted is controlled to rotate, and the surface bending angle of the optical waveguide to be measured is calibrated.

[0122] In this embodiment, the tilt angle and warp angle of the optical waveguide to be measured are calibrated by adjusting the swing angle α and the rotation angle β of the supporting assembly 22 so that the optical waveguide to be measured is in a correct angular posture.

[0123] In a specific embodiment, referring 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 capable of swinging relative to the connecting shaft 222, and the connecting shaft 222 is configured to rotate. When the profiling workpiece 21 is mounted on the mounting frame 221, the mounting frame 221, with the profiling workpiece 21 mounted thereon, is controlled to swing relative to the connecting shaft 222 to calibrate the tilt of the optical waveguide to be measured. Furthermore, the connecting shaft 222 is controlled to drive the mounting frame 221, with the profiling workpiece 21 mounted thereon, to rotate to calibrate the warp angle of the optical waveguide to be measured.

[0124] In a specific embodiment of the present application, controlling the movement of the carrier assembly 22 to utilize the profiling workpiece 21 to calibrate the setting parameters of the optical waveguide to be measured further includes:

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

[0126] The circumferential profile of the calibration component 211 of the profiling workpiece 21 is controlled to be arranged relative to the aperture profile of the lens in the shooting assembly 3 to calibrate the exit pupil distance and the eye box center position of the optical waveguide to be measured.

[0127] In this embodiment, the profiling workpiece 21 comprises a main body 210 and a calibration component 211. The length of the calibration component 211 along the optical axis of the detection system has been measured and matched to exactly match the eye relief of the optical waveguide to be measured. The radial dimension of the calibration component 211, perpendicular to the optical axis of the detection system, has also been calculated and set to be equal to the aperture diameter of the lens of the camera assembly 3.

[0128] In this embodiment, since the length of the calibration component 211 is consistent with the length of the exit pupil distance of the optical waveguide to be measured, by controlling the circumferential profile of the calibration component 211 of the profiling workpiece 21 and the relative arrangement of the lens aperture profile in the shooting assembly 3, the exit pupil distance and the eye box center position of the optical waveguide to be measured can be calibrated through the calibration component 211.

[0129] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the computer program implements any one of the optical waveguide detection methods provided in the above method embodiments.

[0130] The present application may be a system, method and / or computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present application.

[0131] A computer-readable storage medium can be a tangible device that can hold and store instructions for use by an instruction execution device. A computer-readable storage medium can be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination thereof. As used herein, a computer-readable storage medium is not to be construed as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through an electrical wire.

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

[0133] The computer program instructions for performing the operation of the present application can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data or source code or object code written in any combination of one or more programming languages, wherein the programming language includes object-oriented programming languages ​​such as Smalltalk, C++, and conventional procedural programming languages ​​such as "C" language or similar programming languages. Computer-readable program instructions can be executed completely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or executed completely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer by any type of network including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (such as by using an Internet service provider to connect to the Internet). In certain embodiments, by utilizing the state information of computer-readable program instructions to personalize electronic circuits, such as programmable logic circuits, field programmable gate arrays (FPGAs) or programmable logic arrays (PLAs), the electronic circuits can execute computer-readable program instructions, thereby realizing various aspects of the present application.

[0134] Various aspects of the present application are described herein with reference to flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each block of the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts 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 device, thereby producing a machine, so that when these instructions are executed by the processor of the computer or other programmable data processing device, a device is generated that implements the functions / actions specified in one or more blocks in the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium, where these instructions cause the computer, programmable data processing device, and / or other device to operate in a specific manner. Thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing various aspects of the functions / actions specified in one or more blocks in 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 so that a series of operational steps are 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 implement the functions / actions specified in one or more blocks in the flowchart and / or block diagram.

[0137] The flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a part of a module, program segment or instruction, and the part of the module, program segment or instruction contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, implementation by software, and implementation by a combination of software and hardware are all equivalent.

[0138] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not 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 terms used herein are selected to best explain the principles of the embodiments, their practical applications, or technical improvements in the marketplace, or to enable other persons 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: A light source assembly (1) comprises a multi-axis mechanical arm (10) and a light source module (11) arranged on the multi-axis mechanical arm (10), wherein the multi-axis mechanical arm (10) adjusts the light output angle of the light source module (11); A sample assembly (2) to be tested comprises a movably arranged carrying assembly (22), a profiling workpiece (21), and an optical waveguide to be tested, wherein the profiling workpiece (21) is detachably arranged on the carrying assembly (22), and the profiling workpiece (21) is arranged on the carrying assembly (22) to calibrate setting parameters of the optical waveguide to be tested; the optical waveguide to be tested is arranged on the carrying assembly (22), and light emitted by the light source module (11) is incident on the optical waveguide to be tested to form rainbow patterns; A shooting component (3), the shooting component (3) is located on one side of the center of the eye box of the optical waveguide to be measured, and the shooting component (3) is used to obtain a rainbow pattern image formed by the optical waveguide to be measured receiving light at different light output angles; A control module (4) is communicatively connected with the photographing component (3), the carrying component (22) and the light source component (1), the control module (4) being used to control the movement of the carrying component (22) to calibrate the setting parameters of the optical waveguide to be measured using the profiling workpiece (21), and the control module (4) being used to control the light source component (1) to emit light toward the optical waveguide to be measured at a preset light-emitting angle, thereby acquiring the rainbow pattern image photographed by the photographing component (3), and determining the parameters of the rainbow pattern image according to different preset light-emitting angles.

2. The optical waveguide detection system according to claim 1, characterized in that: The profiling workpiece (21) comprises a main body (210) and a calibration component (211) arranged at the center of the main body (210); The calibration component (211) has a length dimension along the optical axis of the detection system, which is the same as the exit pupil distance of the optical waveguide to be measured, and the calibration component (211) has a radial dimension along a direction perpendicular to the optical axis of the detection system, which is the same as the diameter of the lens aperture of the shooting component (3).

3. The optical waveguide detection system according to claim 1 or 2, characterized in that: The bearing assembly (22) comprises a mounting frame (221) and a connecting shaft (222); the mounting frame (221) is capable of swinging relative to the connecting shaft (222); and the connecting shaft (222) is configured to be rotatable; the mounting frame (221) is used for mounting the profiling workpiece (21) or the optical waveguide to be measured; When the mounting frame (221) on which the profiling workpiece (21) is mounted swings relative to the connecting shaft (222), the profiling workpiece (21) calibrates the inner concave angle of the optical waveguide to be measured; When the connecting shaft (222) drives the mounting frame (221) on which the profiling workpiece (21) is mounted to rotate, the profiling workpiece (21) is used to calibrate the surface bending angle of the optical waveguide to be measured.

4. The optical waveguide detection system according to claim 3, characterized in that: The sample assembly (2) to be tested further comprises a first support seat (23), and the connecting shaft (222) is rotatably arranged on the first support seat (23).

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

6. The optical waveguide detection system according to claim 1, wherein: The multi-axis robotic arm (10) is a six-axis robotic arm.

7. The optical waveguide detection system according to claim 1, wherein: The light source assembly (1) further comprises a second support base (12), the multi-axis mechanical arm (10) is arranged on the second support base (12), and the second support base (12) is arranged on a two-dimensional displacement platform.

8. The optical waveguide detection system according to claim 1, wherein: The shooting assembly (3) comprises a third support base (31) and a shooting module (30), wherein the shooting module (30) is arranged on the third support base (31), and the third support base (31) is arranged on a three-dimensional displacement platform.

9. An optical waveguide detection method, characterized in that: The optical waveguide detection method is based on the optical waveguide detection system according to any one of claims 1 to 8, and the optical waveguide detection method includes: Controlling the movement of the bearing assembly (22) to calibrate the setting parameters of the optical waveguide to be measured by utilizing the profiling workpiece (21), wherein the optical waveguide to be measured is arranged on the bearing assembly (22); Controlling the light source assembly (1) to emit light at a preset light emission angle toward the optical waveguide to be measured; Controlling the shooting component (3) to obtain rainbow pattern images formed by the optical waveguide to be measured receiving light rays at different light emission angles; The rainbow pattern image captured by the capturing component (3) is acquired, and parameters of the rainbow pattern image are determined according to different preset light-emitting angles.

10. The optical waveguide detection method according to claim 9, wherein: Controlling the movement of the carrier assembly (22) to calibrate the setting parameters of the optical waveguide to be measured by using the profiling workpiece (21) includes: Controlling the swing of the bearing assembly (22) on which the profiling workpiece (21) is mounted to calibrate the inner concave angle of the optical waveguide to be measured; The bearing assembly (22) on which the profiling workpiece (21) is mounted is controlled to rotate, and the surface bending angle of the optical waveguide to be measured is calibrated.

11. The optical waveguide detection method according to claim 10, wherein: Controlling the movement of the bearing assembly (22) to utilize the profiling workpiece (21) to calibrate the setting parameters of the optical waveguide to be measured further comprises: The profiling workpiece (21) comprises a main body (210) and a calibration component (211) arranged at the center of the main body (210); The circumferential profile of the calibration component (211) of the profiling workpiece (21) is controlled to be arranged relative to the lens aperture profile in the shooting assembly (3), so as to calibrate the pupil distance and the eye box center position of the optical waveguide to be measured.

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