The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 2023
Filed:
Oct. 15, 2020
Applicant:
Massachusetts Institute of Technology, Cambridge, MA (US);
Inventors:
Edward Adelson, Winchester, MA (US);
Branden Romero, Brighton, MA (US);
Filipe Fernandes Veiga, Cambridge, MA (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/18 (2006.01); G01B 11/24 (2006.01); G01L 1/24 (2006.01); G06F 3/01 (2006.01);
U.S. Cl.
CPC ...
G01B 11/24 (2013.01); G01L 1/24 (2013.01); G06F 3/016 (2013.01);
Abstract
A retrographic sensor includes a transparent structure, a transparent elastomeric pad, and an at least partially reflective layer. One or more light sources emit light into a side surface of the transparent structure. The light undergoes internal reflection in the transparent structure and is reflected toward a camera oriented toward the transparent structure. The at least partially reflective layer may be semi-specular in some embodiments.