Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate
2007-04-17
2007-04-17
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By light interference
For dimensional measurement
C356S479000, C356S482000, C356S497000
Reexamination Certificate
active
10981177
ABSTRACT:
A system and method for measuring the thickness of materials and coatings across a moving length of material such as sheet, film, or web by the use of non-contact optical interferometry is provided. Also, a system and method for evaluating the seal integrity in flexible packaging across a moving web by the use of non-contact optical interferometry is provided. Measurement of optical density and thickness, and the combination of various measurements in the production and process of manufacturing materials such as flexible packaging items that involve moving webs of material is disclosed. The present invention concerns the system and method involved in the collection and interpretation of data for these measurements and inspections.
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Lumetrics, Inc.
Lyons Michael A.
Reed Smith LLP
Toatley , Jr. Gregory J.
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