Optical metrology refers to non-contact measurements using different light sources. This usually requires at least one lens, one light source, and one detector. It differs from other forms of inspection because instead of using a tactile measurement method such as a tactile probe, it uses either a reference point (such as a crosshair) or a computer to detect the edge. The biggest advantages of an optical measurement machine are its ability to measure features that are too small or delicate to measure by touch, and the fact that it is faster than other forms of measurement.
The medical, plastics, aerospace and automotive industries are where optical measurement is, and will continue to have a significant impact. But, in reality, this form of non-contact identification is applicable to applications in most workspaces and sectors. Adopters of modern optical measurement instruments are looking for easy-touse technology that supports the acquisition of more accurate data in less time. As a result, there is an increasing demand for in-line measurement and fast processing of acquired images, as well as image stitching capability and large fields of view. There is also a growing demand for innovative components such