Chemical synthesis using diffraction grating-based encoded optical elements
US7190522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2003 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Sep 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2270/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An optical identification element having a synthesized chemical attached thereto includes an optical substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive variation at a grating location, said grating being embedded within a substantially single material of said optical substrate; the grating providing an output optical signal indicative of a code when illuminated by an incident light signal propagating in free space, the code identifying at least one of the element and the chemical, the output signal not being a result of laser action with the grating when illuminated by said incident light signal; and the synthesized chemical being attached to the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.