US 11,989,346 B2
Fiber-optic sensor, data glove and method for detecting curvature
Martin Angelmahr, Goslar (DE); and Wolfgang Schade, Goslar (DE)
Assigned to Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed on Mar. 22, 2021, as Appl. No. 17/209,091.
Application 17/209,091 is a continuation in part of application No. PCT/EP2018/075799, filed on Sep. 24, 2018.
Prior Publication US 2021/0208679 A1, Jul. 8, 2021
Int. Cl. G02B 6/00 (2006.01); G01B 11/16 (2006.01); G01J 3/02 (2006.01); G06F 3/01 (2006.01)
CPC G06F 3/014 (2013.01) [G01B 11/18 (2013.01); G01J 3/0218 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A fiber-optic sensor for detecting a curvature of an article, having
at least one light source,
at least one optical fiber and
at least one receiver, wherein
the optical fiber has at least one coated longitudinal portion, said coated longitudinal portion having at least a partial coating on an outer surface of the optical fiber, said partial coating reducing a refractive index for light of a specific wavelength, in said coated longitudinal portion.