US Patent No. 9,157,815

APPARATUS FOR SENSING PRESSURE USING OPTICAL WAVEGUIDE AND METHOD THEREOF


Patent No. 9,157,815
Issue Date October 13, 2015
Title Apparatus For Sensing Pressure Using Optical Waveguide And Method Thereof
Inventorship Ki Uk Kyung, Daejeon (KR)
Young Sung Kim, Seoul (KR)
Sun Tak Park, Daejeon (KR)
Il Yeon Cho, Daejeon (KR)
Jun Seok Park, Daejeon (KR)
Assignee ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)

Claim of US Patent No. 9,157,815

1. An apparatus for sensing pressure using an optical waveguide sensor, the apparatus comprising:
a light source radiating light;
an optical waveguide panel totally reflecting and transmitting the radiated light in which an upper part of the optical waveguide
panel has a plurality of light transmitting regions, wherein a first portion of the radiated light is emitted to an outside
through the plurality of light transmitting regions, and a second portion of the radiated light is totally reflected and transmitted,
and wherein an amount of the second portion of the radiated light is changed in accordance with a pressure applied to at least
one of the plurality of light transmitting regions;

a detector detecting the amount of the second portion of the radiated light; and
an analyzer determining a magnitude of the pressure and a location where the pressure is applied based on the detected amount
of the second portion of the radiated light.