Japan, Feb. 27 -- NICHIA CHEM IND LTD has got intellectual property rights for 'LIGHT EMITTING DEVICE AND LIGHTING DEVICE INCLUDING THE SAME.' Other related details are as follows:
Application Number: JP,2021-010727
Category (FI): H10H20/851,H10H20/01@A,H01L33/50
Stage: PROBLEM TO BE SOLVED: To provide a light emitting device having a high light emitting spectrum having an excellent light emitting spectrum for visual work and a lighting device provided with the light emitting device.SOLUTION: A light emitting device includes a light emitting element 10 having an emission peak wavelength in the range of 400 nm or more and 490 nm or less, and a phosphor material including a first phosphor 71 having an emission peak in the range of 510 nm or more and less than 580 nm, a second phosphor 72 having an emission peak wavelength in the range of 580 nm or more and 680 nm or less and having a half width of 15 nm or more and 100 nm or less in the emission spectrum, and a third phosphor 73 having an emission peak wavelength in the range of 600 nm or more and 650 nm or less and having a half width of 14 nm or less in the emission spectrum, and when the correlated color temperature is, for example, 2000 K or more and less than 2800 K, a melanopic ratio (MR) value is 0.47 or more and 0.73 or less.SELECTED DRAWING: Figure 1 (Grant)
Filing Date: Jan. 27, 2021
Publication Date: Oct. 11, 2021
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
