Optical strain gauge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 1, 2003
Grant Date -
N/A
app pub date -
Nov 20, 2000
filing date -
Nov 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical strain gauge for measuring the strain in a structural member includes a mechanical grating device fixedly attached to the structural member for modulating an incident beam of light by diffraction; at least one source of light; and an optical system for directing light onto the mechanical grating device and a sensor for receiving light reflected from the mechanical grating device for producing a representation of the strain in the structural member.
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