Spectroscopic system and method using a ceramic optical reference
US6956649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2003 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Feb 25, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/4735
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A ceramic reference in conjunction with a spectrometer, a metallized ceramic material, and a method of utilizing a ceramic material as a reference in the ultraviolet, visible, near-infrared, or infrared spectral regions are presented. The preferred embodiments utilize a ceramic reference material to diffusely reflect incident source light toward a detector element for quantification in a reproducible fashion. Alternative embodiments metallize either the incident surface or back surface of to form a surface diffuse reflectance standard. Optional wavelength reference layers or protective layers may be added to the ceramic or to the metallized layer. The reference ceramic is used to provide a measure of optical signal of an analyzer as a function of the analyzers spatial, temporal, and environmental state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.