US Patent No. 10,465,862

COMPOSITIONS FOR LED LIGHT CONVERSIONS


Patent No. 10,465,862
Issue Date November 05, 2019
Title Compositions For Led Light Conversions
Inventorship Raghuram L. V. Petluri, Los Angeles, CA (US)
Paul Kenneth Pickard, Los Angeles, CA (US)
Assignee ECOSENSE LIGHTING INC., Los Angeles, CA (US)

Claim of US Patent No. 10,465,862

1. A white-light-emitting device comprising:a first LED, a second LED, and a third LED, each configured to emit light with peak wavelength of between about 385 nm and about 485 nm;
a first recipient luminophoric medium associated with the first LED and configured to provide a first combined light when excited by the first LED, the first recipient luminphoric medium comprised of one or more luminescent materials and matrix in a first ratio to produce the first combined light in a blue color range on 1931 CIE diagram;
a second recipient luminophoric medium associated with the second LED and configured to provide a second combined light when excited by the second LED, the second recipient luminphoric medium comprised of one or more luminescent materials and matrix in a second ratio to produce the second combined light in a red color range on 1931 CIE diagram;
a third recipient luminophoric medium associated with the third LED and configured to provide a third combined light when excited by the third LED, the third recipient luminphoric medium comprised of one or more luminescent materials and matrix in a third ratio to produce the third combined light in a yellow/green color range on 1931 CIE diagram;
a fourth LED configured to emit light with a peak wavelength of between about 465 nm and about 520 nm;
a fourth recipient luminophoric medium associated with the fourth LED and configured to provide a fourth combined light when excited by the fourth LED, the fourth recipient luminphoric medium comprised of one or more luminescent materials and matrix in a fourth ratio to produce the fourth combined light in a cyan color range on 1931 CIE diagram;
wherein the luminescent materials within each of the first, second, third, and fourth luminophoric mediums comprise one or more of a first type of luminescent material that emits light at a peak emission between about 515 nm and 590 nm in response to the associated LED light emission; and,
wherein the luminescent materials within each of the first, second, third, and fourth luminophoric mediums comprise one or more of a second type of luminescent material that emits light at a peak emission between about 590 nm and about 700 nm in response to the associated LED light emission.