Fluorescence detecting device
US6094274A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6421
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a fluorescence detecting device comprising a light source, an excitation filter set, a dichroic mirror, an objective, an absorption filter set and an observation optical system, wherein PA1 the excitation filter set includes two interference films with a transmittance of 25% or more at a wavelength by 20 nm shorter than the cross-over wavelength when the wavelength at the crossing point between the transmittance spectrum at a longer wavelength side of the excitation filter set and the transmittance spectrum at a shorter wavelength side of the absorption filter set is defined as a cross-over wavelength, thereby enabling to obtain a bright fluorescent image with a very high S/N ratio without requiring a filter with higher precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.