Feng Xuenyan Chen

US Patent:

20200124270, Apr 23, 2020

Filed:

Oct 21, 2019

Appl. No.:

16/659341

Inventors:

- Atlanta GA, US
Daniel Francis Posacki - Wheaton IL, US
Kyle Michael Bradd - Park Ridge IL, US
Gregory Philip Frankiewicz - Elmhurst IL, US
Feng Chen - Hoffman Estates IL, US
John Glenn Serra - Pingree Grove IL, US
Darcie Renee Callison - Palatine IL, US

International Classification:

F21V 33/00
H04R 1/02
H04R 7/12
F21V 8/00
F21V 23/00

Abstract:

A luminaire includes a speaker positioned at a first depth within a luminaire housing and capable of generating an audio output from a speaker diaphragm. The luminaire also includes a light source that generates a light output. Further, the luminaire includes a light guide assembly positioned at a second depth within the luminaire housing different from the first depth. The light guide assembly includes an acoustically transparent area positioned along a sound path from the speaker diaphragm, and the light guide assembly extracts the light output from the light source and directs the light output away from the luminaire.

US Patent:

20200124271, Apr 23, 2020

Filed:

Oct 21, 2019

Appl. No.:

16/659344

Inventors:

- Atlanta GA, US
Towfiq M. Chowdhury - Lake Forest IL, US
Mohammad Bani Hani - Glenview IL, US
Daniel Francis Posacki - Wheaton IL, US
Kyle Michael Bradd - Park Ridge IL, US
Gregory Philip Frankiewicz - Elmhurst IL, US
Feng Chen - Hoffman Estates IL, US
John Glenn Serra - Pingree Grove IL, US
Darcie Renee Callison - Palatine IL, US

International Classification:

F21V 33/00
F21V 8/00
F21V 23/00
H04R 1/02
F16M 13/02

Abstract:

A luminaire includes a first light source positioned at a first level of a luminaire housing. The first light source generates a light output. The luminaire also includes a trim component positioned at a second level of the luminaire housing different from the first level, The trim component includes a visual feedback element that emits a visual feedback response. Further, the luminaire includes a control circuit positioned at the second level within the trim component. The control circuit controls operation of the visual feedback element.

US Patent:

20200124272, Apr 23, 2020

Filed:

Oct 21, 2019

Appl. No.:

16/659348

Inventors:

- Atlanta GA, US
Towfiq M. Chowdhury - Lake Forest IL, US
Mohammad Bani Hani - Glenview IL, US
Daniel Francis Posacki - Wheaton IL, US
Kyle Michael Bradd - Park Ridge IL, US
Gregory Philip Frankiewicz - Elmhurst IL, US
Feng Chen - Hoffman Estates IL, US
John Glenn Serra - Pingree Grove IL, US
Darcie Renee Callison - Palatine IL, US

International Classification:

F21V 33/00
H04R 7/12
F21V 8/00
H04R 3/12
G09G 3/34

Abstract:

A lighting system includes a first luminaire. The first luminaire includes a first light source that generates a first light output. The first luminaire also includes a first visual feedback response source that generates a first visual feedback response output. Additionally, the first luminaire includes a first speaker that generates a first audio output. Further, the lighting system includes a second luminaire. The second luminaire includes a second light source that generates a second light output and a second visual feedback response source that generates a second visual feedback response output. Furthermore, the second luminaire includes a second speaker that generates a second audio output. The second audio output is different from the first audio output such that the first speaker and the second speaker output different audio components of a multichannel audio protocol output.

US Patent:

20200053849, Feb 13, 2020

Filed:

Aug 9, 2018

Appl. No.:

16/059606

Inventors:

- Atlanta GA, US
Feng Chen - Hoffman Estates IL, US

International Classification:

H05B 33/08
H05B 37/02

Abstract:

Certain aspects involve lighting systems in which an intensity can be selectively modified. For instance, a lighting system includes a light source and a programmable device. The programmable device is configured to detect an input resistance and cause a particular current to flow through the light source, thereby causing the light source to emit a particular lumen intensity corresponding to an input resistance.

US Patent:

20170171933, Jun 15, 2017

Filed:

Dec 9, 2016

Appl. No.:

15/373580

Inventors:

- Decatur GA, US
Michael Z. Gielniewski - Bartlett IL, US
Feng Chen - Hoffman Estates IL, US
Alejandro Lopez - Lake Zurich IL, US

International Classification:

H05B 33/08

Abstract:

Techniques are described to allow a low-cost light fixture to produce light with a relatively high color rendering index (CRI) across a range of color temperatures. A rectified AC voltage may be provided to multiple groups of light-emitting diodes (LEDs) having characteristics related to a range of color temperatures and a target CRI level. The multiple groups of LEDs may be controlled based on a received control signal, such that the combined groups of LEDs produce combined light having a produced color temperature within the range of color temperatures, and having a produced CRI level that is approximately the target CRI level. In some implementations, the received control signal is modified by a modification circuit, and the multiple groups of LEDs may be controlled based on the modified control signal.

US Patent:

20170164440, Jun 8, 2017

Filed:

Dec 8, 2015

Appl. No.:

14/962968

Inventors:

- Des Plaines IL, US
Hangyang Wang - Da Li Ji Chun, CN
Feng Chen - Hoffman Estates IL, US
Towfiq Chowdhury - Lake Forest IL, US
Charles J. Spencer - Wilmette IL, US

International Classification:

H05B 33/08

Abstract:

A dimmable driver for an LED light fixture allows multiple types of dimmers to be used with the light fixture. The dimmable driver may be disconnected from one type of dimmer and subsequently connected to another type of dimmer without having to replace or otherwise adjust the driver for each dimmer. Multiple types of dimmers may be connected to dimmable driver at the same time and the dimmable driver may use dimming signals from one or several of these dimmers. In some embodiments, the dimmable driver is configured to accommodate a step dimmer, a 0-10 V dimmer, and a phase-cut dimmer. Other dimmers and dimming protocols may be accommodated by the dimmable driver in alternative embodiments. Such an arrangement maximizes flexibility for lighting specifiers, contractors, and distributors while minimizing potential errors, costs, delays, and obsolete inventory.

US Patent:

20150382421, Dec 31, 2015

Filed:

Jun 27, 2014

Appl. No.:

14/317621

Inventors:

- Des Plaines IL, US
Feng CHEN - Hoffman Estates IL, US

International Classification:

H05B 33/08

Abstract:

An LED driver circuit provides dimming control in LED lighting applications that can accommodate an AC/DC constant voltage converter. The driver circuit provides a dimming control signal that is used to directly control the DC output current of a downstream DC/DC converter driving an LED array. The dimming control signal tracks the AC or DC output from a dimming controller such that variations in the AC or DC voltage are reflected in the dimming control signal. This dimming control signal is then provided to the downstream DC/DC converter, bypassing the AC/DC constant voltage converter to directly control dimming of the LED array. Such an arrangement lets lighting design engineers deploy the familiar and well-understood constant voltage converter topology in LED lighting applications while retaining the ability to control dimming in the LED lighting applications.