Broadband light-emitting device
US11603982B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2022 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Jul 8, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V9/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A broadband light-emitting device is composed of a substrate, a solid light source that is installed on a front face of the substrate and emits light at an upper face thereof, a near-infrared fluorescent material disposed in direct contact with the front face of the substrate in the vicinity of the solid light source, and a visible light fluorescent material disposed on a region ranging from the upper face of the solid light source to an upper face of the near-infrared fluorescent material. Besides, the near-infrared fluorescent material contains fluorescent particles exhibiting fluorescence in a near-infrared wavelength band with a peak wavelength of 700 nm and a wavelength width at half maximum of 100 nm or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.