Optical filter and fluorescence spectroscopy system incorporating the same
US7411679B2 · kind B2 · utility
8Cited by
9References
33Claims
0Family size
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Key dates
| Filing date | Sep 29, 2004 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Jun 4, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/285
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical filter including at least one substrate and first and second thin-film interference filters disposed directly on the substrate. The interference filters include a plurality of hard coating thin film layers of alternating high and low index of refraction. A filter set capable of providing low image shift is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.