UV-C water purification device
US10501342B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2016 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Apr 25, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods and apparatus are provided for ultraviolet (UV) water purification, comprising UV-C LED modules having improved light extraction efficiency. UV-C LED dies (12) are solidly coupled to associated translucent output windows (14), such that light is transmitted directly from light-emitting surface(s) of the dies (12) to output window(s) (14) of the LED package—without propagation across interstitial air gaps. Gas-to-solid (and solid-to-gas) light transition boundaries are thus eliminated, significantly reducing the amount of light lost through inter-medium boundary reflection, and thereby increasing efficiency of light extraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.