Apparatus and method for measuring spectral characteristics of fluorescent sample
US6020959A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Oct 14, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/065
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for measuring a spectral characteristic of a fluorescent sample, being provided with: a first illuminator for emitting a beam in a wavelength range including the ultraviolet spectrum; a second illuminator for emitting a beam in a wavelength range longer than a first cutoff wavelength; a spectral radiance factor measuring device for measuring first and second total spectral radiance factors of a fluorescent sample by illuminating the fluorescent sample by the first illumination device and second illumination device, respectively; a memory for storing weight coefficients for weighting first and second total spectral radiance factors; and a calculator for calculating a total spectral radiance factor of the fluorescent sample in accordance with the following equation using measured first and second total spectral radiance factors and a weight coefficient: EQU B.sub.t (.lambda.)=A(.lambda.).multidot.Bt.sub.1 (.lambda.)+{1-A(.lambda.)}.multidot.Bt.sub.2 (.lambda.) wherein: PA1 Bt(.lambda.): Total spectral radiance factor of the fluorescent sample PA1 A(.lambda.): Weight coefficient PA1 Bt.sub.1 (.lambda.): First total spectral radiance factor PA1 Bt.sub.2 (.lambda.): Second …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.