As the core light-guiding component of the optical system, the light-concentrating panel's surface form accuracy and structural stability directly impact light-gathering efficiency and system reliability. A company in the optoelectronics industry commissioned us to conduct 3D quality inspection, aiming to optimize the surface morphology through high-precision digital inspection technology and thereby simultaneously enhance optical performance and production efficiency.

Traditional 2D inspection methods fail to capture the continuous deformation characteristics of 3D curved surfaces; deformation errors of ±0.02 mm cause a shift in light focusing, resulting in a loss of effective luminous flux. Edge stress concentrations induced by deformation compromise the component's fatigue resistance, while rework rates driven by manual positioning errors severely constrain mass production efficiency.

Utilizing the HL-3DP industrial-grade 3D photogrammetry system, precise inspection is achieved through the following process:

1. Coded Point Positioning: Precisely placing highly reflective coded points on the surface of the concentrating panel to establish a global coordinate system reference;

2. Multi-viewpoint Acquisition: Capturing images from multiple angles using specialized measurement cameras to ensure complete coverage of complex surface features;

3. Intelligent Comparative Analysis: Importing captured images into 3D reconstruction software to generate a sub-micron level point cloud model, followed by a full-dimension deviation analysis against the original digital model (achieving an accuracy of 0.02mm);

This enables clients to pinpoint localized distortion areas using deformation heat maps, make targeted adjustments to mold parameters, improve surface conformity, and eliminate energy losses caused by deformation.

Comparative data chart

Cross-sectional data plot