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Solid state lighting devices including light mixtures

A technology of solid-state lighting and phosphors, which is applied to lighting devices, components of lighting devices, and damage prevention measures for lighting devices.

Active Publication Date: 2013-07-24
CREE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fluorescence may appear bluish and / or may have poor color rendering properties
In addition, fluorescent light bulbs can present environmental difficulties because they may include mercury as an ingredient

Method used

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  • Solid state lighting devices including light mixtures
  • Solid state lighting devices including light mixtures
  • Solid state lighting devices including light mixtures

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Embodiment Construction

[0049] Various embodiments of the invention are shown in the drawings and will be described more fully hereinafter with reference to the drawings. This invention, however, can be practiced in many different ways and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will teach those skilled in the art persons fully convey the scope of the invention. Throughout, the same reference numerals denote the same elements.

[0050] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present invention. As used herein, th...

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Abstract

A solid state lighting apparatus includes a plurality of light emitting diodes (LEDs) including at least a first LED and a second LED. Chromaticities of the first and second LEDs are selected so that a combined light generated by a mixture of light from the pair of LEDs has about a target chromaticity. The first LED may include a first LED chip (43) that emits light in the blue portion of the visible spectrum and a phosphor (44) that emits red light in response to blue light emitted by the first LED chip. The second LED emits light having a color point that is above the planckian locus (106) of a 1931 CIE Chromaticity diagram, and in particular may have a yellow green, greenish yellow or green hue.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of and priority to US Provisional Patent Application No. 61 / 075,513, filed June 25, 2008, entitled "SOLID STATELIGHTING DEVICES AND METHODS" (Inventor: John Roberts). This application is a continuation-in-part of U.S. Patent Application No. 11 / 736,761, entitled "LIGHTING DEVICE AND LIGHTING METHOD," filed April 18, 2007, which claims the benefit of the following U.S. Provisional Patent Application: April 18, 2006 U.S. provisional patent application filed on April 20, 2006 entitled "LIGHTING DEVICE AND LIGHTING METHOD" (inventors: Gerald H. Negley and Antony Paul van de Ven), entitled "LIGHTING DEVICE AND LIGHTING METHOD" (inventor U.S. Provisional Patent Application No.60 / 793,524 filed on December 1, 2006 by Gerald H. Negley and Antony Paul van de Ven and entitled "LIGHTING DEVICE AND LIGHTING METHOD" (inventors: Gerald H. Negley and Antony Paul van de Ven) U.S. Provisional Patent Appli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00F21K7/00F21Y101/02F21K99/00F21V9/40
CPCF21Y2101/02F21V15/013H01L2924/0002F21S4/003H01L25/075F21K9/00F21Y2113/00F21S4/20F21Y2115/10H01L2924/00
Inventor J·K·罗伯茨G·H·尼格利A·P·万德文
Owner CREE INC
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