Ultraviolet radiation apparatus
US12429190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2021 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | May 9, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2209/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a deep ultraviolet radiation apparatus that is safe and has a high bacteria eliminating effect.The ultraviolet radiation apparatus comprises an optical filter that prevents the transmission of ultraviolet light of 240 nm or more emitted from a phosphor, wherein the optical filter is arranged facing light emitting surfaces of a gas-discharging tube array-type surface-emitting ultraviolet light source device comprising phosphor layer having a broad emission spectrum with a wavelength width of at least 210 nm to 250 nm with a peak wavelength of 228 nm. Light irradiated from the light source device is incident on a filter membrane with an incident angle thereof being altered by a transparent substrate of the optical filter. An ozone generation space may be formed between the surface-emitting ultraviolet light source device and the optical filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.