“PMS” (= photometric stereo) is an algorithm which calculates normal vectors based on shading information from different light sources and reconstructs three-dimensional shapes.
The PMS inspection system employs this algorithm, enabling inspection of unevenness (swellings, depressions) in objects of inspection.

System image

Illumination is moved or around an arc or controlled in order over the target workpiece to detect bulges or dents

System image

Hardware configuration

Arm moving type
Supports many kinds of products for changing the position of lighting, but space for the arm to move in is necessary.
Arch lighting type
Because the lighting is a fixed type, it can be installed in a small space, but compared to the arm moving type, the types of products it supports are limited.