VISION INSPECTION MODULE, AND DEVICE INSPECTION APPARATUS HAVING THE SAMEM, AND VISION INSPECTION METHOD

摘要

The present invention relates to an element testing device which includes a vision testing module which tests the surface of an element, an element testing device having the same; and a vision testing method. The present invention is designed for achieving the described purpose of the invention. The present invention includes a light source unit which successively radiates some of measurement lights having different optical properties to a test object; and a vision testing module which includes an image acquisition unit which acquires images of the test object irradiated with the measurement lights.