General Electric Company

Ge Lighting Solutions LLC

Gelcore, LLC

Zena Brown

Alok Mani Srivastava

Holly Ann Comanzo

Anant Achyut Setlur

Stanton Earl Weaver, Jr

Emil Vergilov Radkov

James Thomas Petroski

Srinath K Aanegola

Boris Kolodin

Christopher L Bohler

Daniel Darcy Doxsee

Stanton E Weaver

A light source () comprises a light engine (), a base (), a power conversion circuit () and an enclosure (). The light engine () comprises at least one LED () disposed on a platform (). The platform () is adapted to directly mate with the base () which a standard incandescent bulb light base. Phosphor () receives the light generated by the at least one LED () and converts it to visible light. The enclosure () has a shape of a standard incandescent lamp.

LED-based light bulb

A light source including a specific LED and phosphor combination capable of emitting white light for direct illumination. In one embodiment, the light source includes an LED chip emitting in the 460-470 nm range radiationally coupled to a phosphor comprising CaMg(SiO)Cl:Eu,Mn. In a second embodiment, the light source includes an LED chip emitting at about 430 nm and a phosphor comprising a blend of SrAl1O:Eu(SAE) and a second phosphor having the formula(TbARE)DO, where A is a member selected from the group consisting of Y, La, Gd, and Sm; RE is a member selected from the group consisting of Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu; D is a member selected from the group consisting of Al, Ga, and In; x is in the range from 0 to about 0.5, y is in the range from about 0 to about 0.2, and z is in the range from about 4 to about 5. Both embodiments produce light having the coordinates x=0.240-0.260 and y=0.340-0.360 on the CIE chromaticity diagram.

White light LED device

Growing community of inventors

Beachwood, OH, United States of America

Zena Brown