NON-INVASIVE IN SITU GLUCOSE LEVEL SENSING USING ELECTROMAGNETIC RADIATION

摘要

System and method of using electromagnetic radiation signals to non-invasively test a glucose level in a subject. During operation, an incident beam of Terahertz waves is generated and projected onto the surface of the eyeball, which is naturally reflected by a tear layer. The reflected Terahertz waves are detected and characterized to determine the reflection characteristics of the tear layer, e.g., an axial ratio of reflection coefficients in two polarization orientations. Provided with the determined axial ratio and according to a predetermined correlation among axial ratio, tear glucose level and blood glucose level, the current blood glucose level in the subject can be derived and presented to a user.

主权项

1. A method of determining a glucose level, said method comprising:
irradiating first electromagnetic waves onto an eyeball of a subject; detecting second electromagnetic waves produced by said first electromagnetic waves being reflected from said eyeball; and determining said glucose level in said subject based on characteristics of said first electromagnetic waves and said second electromagnetic waves.