Patent · US Active

Retrographic sensors

US11846499B2 · kind B2 · utility

0Cited by

3References

21Claims

0Family size

Assignee

Gelsight, Inc. · US

Inventors

Edward H. Adelson · Winchester, US
F. Richard Cottrell · South Easton, US

Key dates

Filing date	Mar 5, 2021
Grant date	Dec 19, 2023
Priority date	—
Expiry date	Nov 20, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2201/10
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.