Highly efficient UV C bulb with multifaceted filter
US11925720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2023 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Jul 28, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J65/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A Far UV C excimer bulb assembly including an excimer bulb, and a curved filter external to and separated from the excimer bulb. The curved filter being hafnium based and including an arc. The excimer bulb emits radiation in a plurality of wavelengths substantially comprising Far UV C. The curved filter having a cut-off wavelength of 234 nm and adapted to block substantially all wavelengths of UV C radiation longer than 234 nm. The excimer bulb is positioned at least partially and centered within the arc so that the majority of the Far UV C wavelengths of radiation pass perpendicularly through the curved filter. The assembly may further include a mirror which may also be curved, and plated onto the exterior surface of the excimer bulb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.