Non-invasive optical detection of target tissues and biological properties including glucose based on phase masks
US9211088B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 2013 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Sep 9, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1455
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Non-invasive glucose testing devices and testing methods without using a blood sample are disclosed and can be used for optically interrogating substances overlaid by turbid media based on wavefront manipulation by means of binary phase masking. Through altering the degree of mode conformity between the fields reaching the collection optics and the field distributions of the propagation modes of optical waveguides the disclosed method can be used to suppress the collection of short-range light originated near the collection optics while permitting unimpeded collection of light originated from sites substantially behind turbid media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.