Optical filter device, system, and methods for improved optical rejection of high angle of incidence (AOI) light
US12204125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2021 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Jan 12, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/0303
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical filter device, system, and methods for improved optical rejection of high angle of incidence (AOI) light is disclosed. For example, an analyte detection system is provided that includes an excitation light source for illuminating an implantable sensor and an optical detector for collecting emission light from the implantable sensor. Further, the optical detector portion of the analyte detection system features an optical filter device including a surface-treated microchannel wherein the surface-treated microchannel serves to absorb, trap, and/or block high-AOI light. Further, a method of operation of the presently disclosed microchannel-based optical filter device including a surface-treated microchannel is provided with respect to the high optical rejection of high-AOI light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.