Filter for an ultraviolet lamp used for fluorescence detection
US6501075B1 · kind B1 · utility
7Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2000 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Apr 11, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/208
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application reveals an improved filter for transmitting electromagnetic radiation in an excitation frequency band (300-475 nm) and for reflecting electromagnetic radiation in higher bands (greater than 475 nm). The higher bands comprise the visible emission band and the infrared band. The improved filter can be prepared by applying an infrared hot-mirror coating to a dichroic filter or the infrared hot-mirror coating can be applied to or used in conjunction with a blue filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.