Mark C Cash

US Patent:

20120236553, Sep 20, 2012

Filed:

Mar 17, 2011

Appl. No.:

13/050110

Inventors:

Mark Charles Cash - Raleigh NC, US

International Classification:

F21V 9/10
H05K 3/30

US Classification:

362231, 29832

Abstract:

A light emitting apparatus includes a first light emitting device configured to emit light having a first chromaticity point that falls within a region on a 1931 CIE Chromaticity Diagram defined by points having coordinates (0.32, 0.40), (0.36, 0.48), (0.43, 0.45), (0.42, 0.42), (0.36, 0.38), and at least two second light emitting devices, each of the at least two second light emitting devices emits light having a respective second chromaticity points that that have ccx values greater than 0.4077 and ccy values less than 0.3944 on the 1931 CIE Chromaticity Diagram. A combined light emitted by the first light emitting device and the at least two second light emitting devices has a third chromaticity point that falls within a 7-step MacAdam ellipse around a point on the black body locus having a correlated color temperature between 2700K and 6500K. The third chromaticity may shift to a more reddish chromaticity when power supplied to the light emitting devices is decreased.

US Patent:

20120201025, Aug 9, 2012

Filed:

Mar 8, 2011

Appl. No.:

13/042959

Inventors:

Mark Charles Cash - Raleigh NC, US

International Classification:

F21V 9/00

US Classification:

362231

Abstract:

A lighting module includes a plurality of solid state light emitting components configured to collectively emit light having a desired white point and a color rendering index (CRI) of greater than about 90. The module further includes at least one additional solid state light emitting component configured to individually emit light having a white point substantially similar to the desired white point. The at least one additional light emitting component may increase a lumen output of the lighting module without substantially altering the desired white point of the light collectively emitted by the plurality of light emitting components.

US Patent:

20200309347, Oct 1, 2020

Filed:

Jun 15, 2020

Appl. No.:

16/901624

Inventors:

- Durham NC, US
Christopher P. Hussell - Cary NC, US
John Wesley Durkee - Raleigh NC, US
Peter Scott Andrews - Durham NC, US
Mark Cash - Raleigh NC, US
David Randolph - Rougemont NC, US

International Classification:

F21V 9/30
F21K 9/62
F21V 13/02
F21K 9/60
F21V 29/506
F21V 23/00
F21V 7/30
F21V 29/76
F21V 29/77
F21V 29/83
F21V 29/89
F21K 9/66
F21K 9/68
F21V 3/00
F21V 7/00

Abstract:

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.

US Patent:

20160320004, Nov 3, 2016

Filed:

Apr 29, 2016

Appl. No.:

15/143261

Inventors:

- Durham NC, US
Christopher P. Hussell - Cary NC, US
John Wesley Durkee - Raleigh NC, US
Peter Scott Andrews - Durham NC, US
Mark Cash - Raleigh NC, US
David Randolph - Rougemont NC, US

International Classification:

F21K 9/66
F21V 29/83
F21V 29/89
F21V 29/77
F21V 3/00
F21V 9/16
F21V 23/00
F21K 9/68
F21V 7/00
F21V 29/76

Abstract:

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.

US Patent:

20150189708, Jul 2, 2015

Filed:

Feb 5, 2015

Appl. No.:

14/615120

Inventors:

- Durham NC, US
Mark Charles Cash - Raleigh NC, US

International Classification:

H05B 33/08

Abstract:

A light emitting apparatus includes a first light emitting device configured to emit light having a first chromaticity point that falls within a region on a 1931 CIE Chromaticity Diagram defined by points having coordinates (0.32, 0.40), (0.36, 0.48), (0.43, 0.45). (0.42, 0.42), (0.36, 0.38), and at least two second light emitting devices, each of the at least two second light emitting devices emits light having a respective second chromaticity points that that have ccx values greater than 0.4077 and ccy values less than 0.3944 on the 1931 CIE Chromaticity Diagram. A combined light emitted by the first light emitting device and the at least two second light emitting devices has a third chromaticity point that falls within a 7-step MacAdam ellipse around a point on the black body locus having a correlated color temperature between 2700K and 6500K. The third chromaticity may shift to a more reddish chromaticity when power supplied to the light emitting devices is decreased.

US Patent:

20140197750, Jul 17, 2014

Filed:

Jan 15, 2013

Appl. No.:

13/742008

Inventors:

- Durham NC, US
Mark Cash - Raleigh NC, US

Assignee:

Cree, Inc. - Durham NC

International Classification:

H05B 33/08

US Classification:

315192, 315297

Abstract:

A lighting apparatus having a plurality of light-emitting devices (LEDs) can include at least one first LED that is configured to emit first chromaticity light, at least one second LED that is configured to emit second chromaticity light, and at least one additional LED that is configured to emit third chromaticity light. A control circuit can be operatively coupled to the plurality of light-emitting devices and configured to cause a color temperature produced by the plurality of LEDs to vary substantially in conformance with a Planckian locus in response to a dimming control input less than about 1800K.