Contactless optical process for identifying objects
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United States of America Patent
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May 1, 1990
Grant Date -
N/A
app pub date -
Nov 20, 1987
filing date -
Nov 20, 1986
priority date (Note) -
Expired
status (Latency Note)
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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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