Retrographic sensors
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United States of America Patent
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Dec 19, 2023
Grant Date -
Jul 15, 2021
app pub date -
Mar 5, 2021
filing date -
Sep 6, 2018
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Abstract
A retrographic sensor includes a clear elastomer substrate, a deformable reflective layer, and a contact surface with an array of rigid, non-planar features formed of a material or a pattern of particles to mitigate adhesion to a target surface while permitting the egress of trapped air around a region of interest. This combination of features permits the contact surface of the sensor to more closely conform to the target surface while physically transferring the topography of the target surface to the deformable layer for imaging through the substrate.
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