It counteracts the aberration diffusion of thick glass, and the flat-field design ensures clear edges in a large field of view (such as the detection of an entire TV screen), balancing efficiency and accuracy.

Applications:
Full-field defect scanning of large-size liquid crystal panels (such as 8K TV screens);
Internal structure observation of multi-layer thick glass devices (such as in-vehicle display modules) (near-ultraviolet penetration + bright field contrast).