Diffraction grating-based encoded particle
US7106513B2 · kind B2 · utility
66Cited by
200References
70Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 12, 2003 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Sep 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2019/0629
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An encoded particle 8 includes a particle substrate 10; at least a portion of the substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive index variation at a grating location, the grating being embedded within a substantially single material of the substrate; and the grating providing an output optical signal indicative of a code when illuminated by an incident light signal propagating in free space, the output optical signal being a result of passive, non-resonant scattering from the grating when illuminated by the incident light signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.