Matthew A Lekson

US Patent:

6623132, Sep 23, 2003

Filed:

Oct 19, 2001

Appl. No.:

09/999501

Inventors:

Matthew A. Lekson - Novi MI
Jianzhong Jiao - Farmington Hills MI

Assignee:

North American Lighting, Inc. - Farmington Hills MI

International Classification:

F21V 704

US Classification:

362 31, 362 26, 362 27, 362558, 362560, 362555, 362299, 362308, 362326, 362581

Abstract:

A display device and a lighting system is provided for providing lighting in exterior and interior lighting applications, such as for center high mount stop lights (CHMSL) and other automotive lighting applications. The display device uses a light guide having light couplers hingedly attached to a light source end for receiving light from at least one light source. The light guide extends from the light source end with a light emitting surface and a light guide surface opposite the light emitting surface. The light emitting surface and the light guide surface extend in a direction substantially parallel to the direction of the light received from the light source. The light guide surface has a plurality of surface sections extending at angles relative to one another. The surface sections may be angled at alternating sections to direct light towards the light emitting surface using total internal reflection.

US Patent:

6953261, Oct 11, 2005

Filed:

Feb 25, 2000

Appl. No.:

09/513040

Inventors:

Jianzhong Jiao - Novi MI, US
Matthew A. Lekson - Northville MI, US

Assignee:

North American Lighting, Inc. - Farmington Hills MI

International Classification:

F21V004/00

US Classification:

362217, 362223, 362297, 362341

Abstract:

A tubular reflector for reflecting light emanating from a tubular light source. The tubular reflector may be semi-circular or elliptical in shape and positioned around the tubular light source. Furthermore, the inner reflective surface of the tubular reflector may be smooth or multi-faceted. The reflector may reflect light from the tubular light source and redirect the light to achieve a desired distribution pattern.

US Patent:

7059754, Jun 13, 2006

Filed:

Jun 25, 2003

Appl. No.:

10/606694

Inventors:

Matthew Andrew Lekson - Farmington Hills MI, US
Ben Wang - Northville MI, US
Dianna Lynn Stadtherr - Livonia MI, US
Derek Scott Mallory - Plymouth MI, US
Jianzhong Jiao - Novi MI, US
Brian Curtis Wells - Grosse Point MI, US

Assignee:

North American Lighting, Inc. - Farmington Hills MI

International Classification:

F21V 21/00

US Classification:

362545, 362219, 362238, 362252, 362544, 362800

Abstract:

A modular automotive light device is provided. The light device may include multiple light emitting diodes (LED). Multiple light devices may be arranged in a desired manner comprising an automotive headlamp, for example. The light devices may be stacked on top of each other and/or positioned side by side to form the headlamp. Using multiple light devices provides a sufficient amount of radiated light rays in order to comply with regulations and standards for light output of light devices for use on the exterior of an automobile, for example.

US Patent:

7394540, Jul 1, 2008

Filed:

Dec 20, 2005

Appl. No.:

11/314959

Inventors:

Matthew Lekson - Woodinville WA, US
David R. Jenkins - Redmond WA, US

Assignee:

Radiant Imaging, Inc. - Duvall WA

International Classification:

G01N 21/25

US Classification:

356405

Abstract:

Systems and methods for applying different color calibrations at different locations in an imaging photometer measurement are disclosed herein. In one embodiment, a method for measuring a light source having a first area with a first spectral distribution and a second area having a second spectral power distribution can include selecting one or more data points in the first area for measurement. The method then includes applying a calibration to the selected data points in the first area such that a desired colorimetric result is displayed for each data point in a single colorimetric measurement of the first area. In several embodiments, the method can further include selecting one or more data points in the second area, and applying a different calibration to the selected portions of the second area such that a desired colorimetric result is also displayed for each data point in the second area.

US Patent:

7616314, Nov 10, 2009

Filed:

Jan 30, 2006

Appl. No.:

11/343501

Inventors:

Douglas Kreysar - Duvall WA, US
Matthew Lekson - Woodinville WA, US
Gary Robert Pedeville - Duvall WA, US

Assignee:

Radiant Imaging, Inc. - Duvall WA

International Classification:

G01N 21/25

US Classification:

356405, 348191, 348189, 356218, 356406, 356419

Abstract:

Methods and apparatuses for determining a color calibration for different spectral light inputs in an imaging apparatus measurement are disclosed herein. In one embodiment, for example, a method for determining a color calibration for different spectral light inputs in an imaging apparatus measurement can include creating a reference color calibration and a reference luminance scaling calibration for each of a plurality of colors. The method can also include measuring a reference gray value R, G, B for each color in an image measurement of the light source. The method can further include calculating an R, G, B gray value for a first pixel in each of three filtered image measurements. The method can then include calculating pixel ratio values from each of the three first pixel gray values and comparing the reference gray values to the pixel ratio values to determine which one or more reference gray values are closest to the pixel ratio values. The method further includes calculating X, Y, Z values for the first pixel in the image measurement, and then repeating the steps of the method beginning with calculating an R, G, B gray value for each subsequent pixel in the image measurement.

US Patent:

7697060, Apr 13, 2010

Filed:

Jan 30, 2006

Appl. No.:

11/344452

Inventors:

Douglas Kreysar - Duvall WA, US
Matthew Lekson - Woodinville WA, US
Ronald F. Rykowski - Woodinville WA, US
Richard E. Albrecht - Chapel Hill NC, US

Assignee:

Radiant Imaging, Inc. - Duvall WA

International Classification:

H04N 5/238

US Classification:

348368, 348362, 348367, 396452

Abstract:

Rotary shutter assemblies for imaging photometers and methods for using such shutters are disclosed herein. In one embodiment, for example, a method for capturing an image with an imaging photometer can include positioning a rotary shutter having an aperture at a first position such that the shutter blocks light traveling along an optical axis from a light source being measured to an image sensor of the photometer. The method can include pivotably moving the shutter at a generally constant angular speed to a second position with the aperture aligned with the optical axis to expose at least a portion of the image sensor to the light for a first predetermined exposure time. After exposing each portion of the image sensor to the light for the first exposure time, the method can include pivotably moving the shutter at the angular speed to a third position such the aperture is not aligned the optical axis, and then pivotably moving the shutter from the third position back to the first position without rotating the shutter 360 degrees.

US Patent:

61900273, Feb 20, 2001

Filed:

Feb 19, 1999

Appl. No.:

9/253643

Inventors:

Matthew Andrew Lekson - Farmington Hills MI

Assignee:

North American Lighting, Inc. - Farmington Hills MI

International Classification:

B60Q 132

US Classification:

362495

Abstract:

The present invention is directed to a lighting device to illuminate the running board of a vehicle. One embodiment of the lighting device includes an electroluminescent element from which light emanates, an optical element for focusing the light, and a transparent tube surrounding the electroluminescent element and the optical element. In another embodiment of the lighting device, the transparent tube itself is provided with optical power for creating the desired light pattern.

US Patent:

63058138, Oct 23, 2001

Filed:

Aug 11, 1999

Appl. No.:

9/372567

Inventors:

Matthew Andrew Lekson - Farmington Hills MI
Jianzhong Jiao - Novi MI

Assignee:

North American Lighting, Inc. - Farmington Hills MI

International Classification:

F21V 704

US Classification:

362 31

Abstract:

A display device is provided for providing lighting in exterior and interior lighting applications, such as for center high mount stop lights (CHMSL) and other automotive lighting applications. The display device uses a light guide having light couplers on a light source end for receiving light from at least one light source. The light guide extends from the light source end with a light emitting surface and a light guide surface opposite the light emitting surface. The light emitting surface and the light guide surface extend in a direction substantially parallel to the direction of the light received from the light source. The light guide surface has a plurality of surface sections extending at angles relative to one another. The surface sections may be angled at alternating sections direct light towards the light emitting surface using total internal reflection.