What is main difference between 3D AOI machine and and 2D AOI machine

Question

Accepted Answer

3D AOI machines use height information to detect defects, while 2D AOI machines only use 2D images.

3D AOI machines use height information to detect defects, providing more accurate inspection results.
2D AOI machines only use 2D images, which may lead to missing defects that are not visible in 2D.
3D AOI machines are more expensive but offer higher precision and reliability compared to 2D AOI machines.
Examples: 3D AOI machines like Koh Young or Mirtec, 2D AOI machines like Omron or CyberOptics.