Christopher D Bates

US Patent:

7374311, May 20, 2008

Filed:

Apr 25, 2005

Appl. No.:

10/558480

Inventors:

Christopher Bates - Oak Hill VA, US
Matthew Brown - Falls Church VA, US

Assignee:

Advanced Optical Technologies, LLC - Herndon VA

International Classification:

F21V 33/00

US Classification:

362234, 362249, 362812, 40550, 40564, 40581, 40583

Abstract:

A system provides light of selectable spectral characteristic (e. g. a selectable color combination of light), for luminous applications such as signage and indicator lights. An optical integrating cavity combines energy of different wavelengths from different sources, typically different-color LEDs. The cavity has a diffusely reflective interior surface and an aperture for allowing emission of combined light. Control of the intensity of emission of the sources sets the amount of each wavelength of light in the combined output and thus determines a spectral characteristic of the light output through the aperture. A deflector shaped like a number, character, letter, or other symbol, may be coupled to a similarly shaped aperture. By combining several such fixtures, it is possible to spell out words and phrases, with selectable color lighting. Disclosed fixture examples use an extruded body member with appropriately located reflective surfaces, to form both the cavity and deflector.

US Patent:

7497590, Mar 3, 2009

Filed:

Apr 26, 2005

Appl. No.:

10/555094

Inventors:

Matthew Brown - Falls Church VA, US
Christopher Bates - Sioux Falls SD, US

Assignee:

Advanced Optical Technologies, LLC - Herndon VA

International Classification:

F21V 9/00

US Classification:

362231, 362230, 362227, 250228

Abstract:

A desired color of illumination of a subject is achieved by determining settings for color inputs and applying those setting to one or more systems that generate and mix colors of light, so as to provide combined light of the desired character. In the examples of appropriate systems, an optical integrating cavity diffusely reflects light of three or more colors, and combined light emerging from an aperture of the cavity illuminates the subject. System settings for amounts of the different colors of the input lights are easily recorded for reuse or for transfer and use in other systems.

US Patent:

7883239, Feb 8, 2011

Filed:

Dec 23, 2008

Appl. No.:

12/342359

Inventors:

Matthew Brown - Falls Church VA, US
Christopher Bates - Sioux Falls SD, US

Assignee:

ABL IP Holding LLC - Conyers GA

International Classification:

F21V 9/00

US Classification:

362231, 362230, 362227, 362800, 250228

Abstract:

A desired color of illumination of a subject is achieved by determining settings for color inputs and applying those setting to one or more systems that generate and mix colors of light, so as to provide combined light of the desired character. In the examples of appropriate systems, an optical integrating cavity diffusely reflects light of three or more colors, and combined light emerging from an aperture of the cavity illuminates the subject. System settings for amounts of the different colors of the input lights are easily recorded for reuse or for transfer and use in other systems.