Contactless optical process for identifying objects

Details Contactless optical process for identifying objects Contactless optical process for identifying objects

1987-11-20

1990-05-01

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

356363, G01N 902

Patent

active

049213520

ABSTRACT:
A contactless optical process with which characteristics such as the type, position, deformation, and vibration spectrum, of an object can determined and/or measured. In this process, coherent light is changed by an optical medium fixed to the object. Suitable optical media, such as acousto-optical transducers or special holograms, are selected for the respective characteristics. A photosensitive receiver equipped with evaluation means determines the respective characteristics of the object from the changes in the coherent light caused by these optical media.

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