Luminaire and lighting control system

Patent metadata

Field	Value
Publication number	US-12455052-B2
Application number	US-202218715619-A
Country	US
Kind code	B2
Filing date	Dec 1, 2022
Priority date	Dec 1, 2021
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

A device includes a LED die having a peak emission at a blue or shorter wavelength, a LED die having a peak emission at a red, orange, yellow, green, or cyan wavelength, and a homogenous light conversion material positioned to receive light emitted from the LED dies. The light conversion material including: (i) a first phosphor compound having a peak emission at a green wavelength; (ii) a second phosphor compound having a peak emission at an orange wavelength; and (iii) a third phosphor compound having a peak emission at a red, orange, yellow, green, or cyan wavelength. The device is a packaged LED device and a relative concentration of the phosphor compounds and a relative luminosity of the LED dies are selected so the device emits white light satisfying a preference P1 and a fidelity F3 according to a TM-30 standard for color rendering.

First claim

What is claimed is:

1. A light emitting device, comprising:
a first LED die having a peak emission wavelength L1 in a blue or shorter wavelength;
a second LED die having a peak emission wavelength L2 in a red, orange, yellow, green, or cyan wavelength; and
a homogenous light conversion material positioned to receive light emitted from the first and second LED dies, the light conversion material comprising:
a first phosphor compound having a peak emission wavelength LP1 in a green wavelength;
a second phosphor compound having a peak emission wavelength LP2 in an orange wavelength; and
a third phosphor compound having a peak emission wavelength LP3 in a red, orange, yellow, green, or cyan wavelength;
wherein the light emitting device is a packaged LED device and a relative concentration of the first, second, and third phosphor compounds in the homogenous light conversion material, and a relative luminosity of the first and second LED dies are selected so that the light emitting device, during operation, emits white light having a spectral power distribution satisfying a preference P1 and a fidelity F3 according to a TM-30 standard for color rendering.

2. The light emitting device of claim 1 , wherein both L2 and LP3 include a red wavelength.

3. The light emitting device of claim 1 , wherein L2 includes a red and a cyan wavelength and LP3 includes a red and a cyan wavelength.

4. The light-emitting device of claim 1 , wherein during operation, a luminaire containing the light-emitting device outputs light having at least F2 fidelity according to the TM-30 standard for color rendering.

5. The light-emitting device of claim 4 , wherein during operation, the luminaire containing the light-emitting device outputs light having at least F1 fidelity according to the TM-30 standard for color rendering.

6. The light-emitting device of claim 1 , wherein during operation, the luminaire containing the light-emitting device outputs 200 or more lumens per Watt of input power.

7. The light-emitting device of claim 1 , wherein the light conversion material has multiple peak emission wavelengths between 580 nm to 650 nm.

8. The light-emitting device of claim 1 , further comprising an encapsulant including the light conversion material, the encapsulant encapsulating the first LED die and the second LED die on a surface of a substrate.

9. The light-emitting device of claim 8 , further comprising at least a portion of an electrical circuit comprising the first LED die and the second LED die, the electrical circuit being configured to provide independent control of a first amount of power supplied to the first LED die and a second amount of power supplied to the second LED die.

10. The light-emitting device of claim 1 , wherein L1 is in a range from 360 nm to 490 nm.

11. The light-emitting device of claim 1 , wherein LP2 is in a range from 550 500 nm to 650 nm.

12. The light-emitting device of claim 11 , wherein LP3 is in a range from 580 nm to 650 nm.

13. A luminaire, comprising:
the light-emitting device of claim 1 ; and
a solid optical assembly arranged with a first light entry surface facing the light-emitting device, the solid optical assembly being configured to receive light from the light-emitting device at the surface and output the light from one or more light exit surfaces.

14. A system, comprising:
one or more luminaires according to claim 13 ; and
an electronic control system in communication with the one or more luminaires via a network, the electronic control system being programmed to control a brightness and a color of light emitted by the one or more luminaires.

Assignees

• Quarkstar Llc

Inventors

• Bretschneider Eric
• Eskow Cary Nevin
• Gladwin Andrew Stuart
• Lerman Louis

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• F21V9/30

  Elements containing photoluminescent material distinct from or spaced from the light source (shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40) · CPC title

• F21Y2113/13

  comprising an assembly of point-like light sources · CPC title

• H10H20/8513

  having two or more wavelength conversion materials · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title