Light-enhancement device, and appliance having the same
US10386629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Oct 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/285
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-enhancement device includes a wavelength conversion member and a wavelength controlling element. The wavelength conversion member includes a light-transmissive substrate and wavelength conversion material which is disposed within the light-transmissive substrate for converting a portion of light with a first wavelength into another light with a second wavelength. The wavelength controlling element is disposed on a surface of the light-transmissive substrate for reflecting another portion of the light with the first wavelength into the light-transmissive substrate and enabling the portion of the light with the second wavelength to pass through the wavelength controlling element. A roughness of the surface of the light-transmissive substrate facing towards the wavelength controlling element is configured to be 0-1 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.