Light-source device
US10531789B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2017 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Jul 21, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2113/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A light-source device includes: two long-wavelength light sources that emit red long-wavelength light beams (LWLs); a broadband light source that emits a green broadband light beam (BL); and a multiplexing portion that multiplexes a wavelength region greater than a first predetermined wavelength λ1 of one of the LWLs having a longer peak wavelength and a wavelength region equal to or less than λ1 of the other LWL having a shorter peak wavelength, and that multiplexes a wavelength region greater than a second predetermined wavelength λ2 of the other LWL and a wavelength region equal to or less than λ2 of the BL, wherein intensities of the LWLs at λ1 are equal to or greater than 10% of the peak intensities thereof and intensities of the other LWL and the BL at λ2 are equal to or greater than 10% of the peak intensities thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.