Novel Microscopy Technique to Measure Free-Form Optical Element
In an article published in the journal Micromachines, researchers designed a novel measurement technique that combines transmission digital holographic microscopy (DHM) and reflection DHM to obtain thickness and surface information of elements to deduce the 3D structure.
Chonglin Wu Gengliang Chen Xuhui Zhang Lei Chen Guoliang Zheng Digital Holographic Microscopy Technique
Source: azooptics.com