Cree Gmbh

Florin A Tudorica

Christopher P Hussell

Peter Scott Andrews

Michael John Bergmann

Brian Thomas Collins

David T Emerson

Jesse Colin Reiherzer

John Wesley Durkee

Jasper S Cabalu

David N Randolph

P Joseph DeSena, Jr

Mark Cash

David Clatterbuck

Iliya Todorov

Sung Chul Joo

Erin R F Welch

Amber Christine Abare

Arthur Fong-Yuen Pun

Solid state lighting components are provided with improved color rendering, improved color uniformity, and improved directional lighting, and that are suitable for use in high output lighting applications and can be used in place of CDMH bulb lighting. Exemplary solid state lighting components include a substrate comprising a light emitter surface and or more light emitters disposed on and/or over the light emitter surface. Exemplary components include a light directing optic and/or a diffusing optic for mixing light. The light directing optic may be disposed at least partially around a perimeter of the light emitter surface. The diffusing optic may be disposed between portions of the light directing optic and spaced apart from the light emitter surface.

Solid state lighting components

Solid state lighting apparatuses, systems, and related methods for improved heat distribution are described. A solid state lighting apparatus can include a substrate and an array of solid state light emitters of varying power arranged on or over the substrate, wherein a predetermined group of the solid state light emitters includes solid state light emitters non-uniformly spaced apart from one another. A method of providing a solid stare lighting apparatus can include providing a substrate, and mounting an array of solid state light emitters of varying power on or over the substrate such that a predetermined group of the solid state light emitters includes solid state light emitters non-uniformly spaced apart from one another.

Solid state lighting apparatuses with non-uniformly spaced emitters for improved heat distribution, system having the same, and methods having the same

A semiconductor light emitting device includes an LED and an associated recipient luminophoric medium that includes respective first through fourth luminescent materials that down-convert respective first through fourth portions of the radiation emitted by the LED to radiation having respective first through fourth peak wavelengths. The first peak wavelength is in the green color range and the second through fourth peak wavelengths are in the red color range. The second and third luminescent materials each emit light having a full-width half maximum bandwidth of at least 70 nanometers, while the fourth luminescent material emits light having a full-width half maximum bandwidth of less than 60 nanometers. Embodiments that only include three luminescent materials are also disclosed.

Light-emitting devices having closely-spaced broad-spectrum and narrow-spectrum luminescent materials and related methods

Solid state light fixtures include a plurality of blue-shifted-yellow/green light emitting diode ('LED') packages and a plurality of blue-shifted-red LED packages, where the solid state light fixture emits light having a correlated color temperature of between 1800 K and 5500 K, a CRI value of between 80 and 99, a CRI R9 value of between 15 and 75, and a Qg value of between 90 and 110 when the blue-shifted-yellow/green LED packages and the blue-shifted-red LED packages are operating at steady-state operating temperatures of at least 80&#xb0; C.

Solid state light fixtures suitable for high temperature operation having separate blue-shifted-yellow/green and blue-shifted-red emitters

A semiconductor light emitting device includes an LED and a recipient luminophoric medium that includes a first narrow-spectrum luminescent material that down-converts a first portion of the radiation emitted by the LED to radiation having a first peak wavelength in the green-yellow color range and a second narrow-spectrum luminescent material that down-converts a second portion of the radiation emitted by the LED to radiation having a second peak wavelength in an orange-red color range. The first and second luminescent materials and any additional narrow-spectrum luminescent materials that are included in the recipient luminophoric medium generate at least 80% of the light emitted by the recipient luminophoric medium. A CRI value of the combined light emitted by the semiconductor light emitting device is at least 60 and less than 80.

High brightness, low-cri semiconductor light emitting devices including narrow-spectrum luminescent materials

Light emitting devices having closely-spaced broad-spectrum and narrow-spectrum luminescent materials and related methods

Light emitter devices for light emitting diodes (LED chips) and related methods are disclosed. In one embodiment a light emitter device includes a substrate and a chip on board (COB) array of LED chips disposed over the substrate. A layer having wavelength conversion material provided therein is disposed over the array of LED chips for forming a light emitting surface from which light is emitted upon activation of the LED chips. In some aspects, the wavelength conversion material includes phosphoric or lumiphoric material that is settled and/or more densely concentrated within one or more predetermined portions of the layer. In some aspects, the devices and methods provided herein can comprise a lumen density of approximately 30 lm/mmor greater.

Light emitter devices

Remote component devices, systems, and methods are disclosed. In one aspect, remote component devices, systems, and methods can include a body for lockably securing the remote component to a housing. Devices, systems, and methods can also include one or more light emitting devices disposed over the body. An optical material can be remotely located at least a first distance away from the one or more light emitting devices. Remote component devices, systems, and methods disclosed herein can be used as replacements and/or equivalent light products for standard filament light bulbs and compact fluorescent lamp (CFL) bulbs.

Remote component devices, systems, and methods for use with light emitting devices

Devices, components and methods containing one or more light emitter devices, such as light emitting diodes (LEDs) or LED chips, are disclosed. In one aspect, a light emitter device component can include a ceramic body having a top surface, one or more light emitter devices mounted directly or indirectly on the top surface, and one or more electrical components mounted on the top surface and electrically coupled to the one or more light emitter devices, wherein the one or more electrical components can be spaced from the ceramic body by one or more non-metallic layers. Components disclosed herein can result in improved light extraction and thermal management.

Ceramic-based light emitting diode (LED) devices, components and methods

A semiconductor light emitting apparatus a semiconductor light emitting device configured to emit light inside a hollow shell including wavelength conversion material dispersed therein or thereon. A semiconductor light emitting apparatus according to some embodiments is capable of generating in excess of 250 lumens per watt, and in some cases up to 270 lumens per watt.

High efficacy semiconductor light emitting devices employing remote phosphor configurations

A semiconductor light emitting apparatus a semiconductor light emitting device configured to emit light inside a hollow shell including wavelength conversion material dispersed therein or thereon. A semiconductor light emitting apparatus according to some embodiments is capable of generating in excess of 230 lumens per watt.

A luminescent particle includes an interior portion of the luminescent particle comprising a luminescent compound that reacts with atmospherically present components and a passivating layer on an outer surface of the luminescent particle that is operable to inhibit the reaction between the luminescent compound and the atmospherically present components.

Growing community of inventors

Chapel Hill, NC, United States of America

Florin A Tudorica