3D grating mounting self-learning error compensation method and system
By employing a single industrial camera and a three-level layered error decoupling control method during the 3D grating mounting process, the problem of high-precision mounting error between 3D gratings and display panels was solved, achieving sub-micron level precision and high-efficiency mass production, which is suitable for advanced packaging in optical communication.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN GOLD TECH CO LTD
- Filing Date
- 2026-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for micron-level high-precision mounting of 3D gratings and display panels suffer from problems such as dual-camera coordinate positioning errors, contradictions between linear compensation models and nonlinear multi-source coupling errors, offline calibration schemes being unable to adapt to mass production dynamic errors, continuous decay of compensation effects, and disconnect between algorithms and mounting processes.
A single industrial camera is used to acquire images in the same visual coordinate system. Combined with a three-level hierarchical error decoupling and collaborative control architecture, including mechanical error pre-compensation, glass warpage real-time compensation and self-learning dynamic closed-loop compensation methods, dynamic suppression of multi-source errors and accuracy maintenance are achieved through improved DH transformation matrix method, binocular stereo vision method and incremental PID control.
It achieves submicron-level multi-source error suppression, improves 3D display performance, reduces equipment costs, increases mass production yield and cycle time efficiency, breaks through the precision bottleneck, and is suitable for advanced optical communication packaging scenarios such as NPO/CPO optical engines.
Smart Images
Figure CN122415754A_ABST