Patent ID: 9658169
Date: 2017-05-23
CPC Classifications: G01N

Claim:
1. A system for assessing structures formed by microfabrication processes and the microfabrication processes themselves comprising: an imaging system comprising a camera, optics and illumination for obtaining 2D images of a structure at multiple focal positions of the imaging system relative to the structure to substantially characterize both 2D and 3D geometries of the structure; a mechatronic support for moving the substrate relative to the imaging system to address a field of view of the camera to the structure; and a controller coupled to the imaging system and to the mechatronic support for coordinating the operation thereof and for receiving images from the imaging system, for identifying in focus portions of individual received images of the structure at multiple, different focal positions of the imaging system relative to the structure, for forming a concatenated image from the in focus portions of the received images, and for identifying features of the structure in the concatenated image that are indicative of the operation of a microfabrication tool.