Granted Patent B2

US 12,666,769 · App. 18/123,705 · Granted Jun 23, 2026

Inventors: Aurelien J.F. David (San Francisco, CA); Arpan Chakraborty (Los Angeles, CA); Michael Ragan Krames (Los Altos, CA); Troy Trottier (Los Angeles, CA)

Assignee: KORRUS, INC.

H10H20/8513C09K11/0883C09K11/565C09K11/77348C09K11/7739C09K11/7774H10H20/813H10H20/825H10H20/8506H10H20/853H10H20/851H10W90/00Y02B20/00

Abstract

Claims (13)

1 . A light emitting system for emitting white light, said light emitting system comprising:

light emitting diodes (LEDs) comprising at least

a first set of LEDs comprising at least one first LED and emitting a first light having a first peak wavelength in a range 405-430 nm,

a second set of LEDs comprising at least one second LED and emitting a second light having a second peak wavelength which is longer than the first peak wavelength; and

wavelength-converting materials, configured to substantially absorb a portion of light from said LEDs and convert it to a third light and a fourth light;

wherein said white light comprises at least a portion of said first, second, third, and fourth lights.

2 . The system of claim 1 , wherein the second set of LEDs are blue LEDs.

3 . The system of claim 1 , wherein said wavelength-converting materials are disposed over one of the first or second sets of LEDs.

4 . The system of claim 1 , wherein said wavelength-converting materials comprises a green phosphor and a red phosphor.

5 . The system of claim 1 , wherein the wavelength-converting material does not include a blue phosphor.

6 . The system of claim 1 , wherein the first set of LEDs is characterized by an internal quantum efficiency of at least 70% when operated at a current density of 100 A·cm−2.

7 . The system of claim 1 , wherein said third light is green light and said fourth light is red light.

8 . The system of claim 1 , wherein said first and second lights are saturated and said third and fourth lights are unsaturated.

Continuity (6)

References Cited (274)