Susan Louie Leong

US Patent:

6853151, Feb 8, 2005

Filed:

Apr 12, 2004

Appl. No.:

10/822579

Inventors:

Susan J. Leong - New York NY, US
John Kit - Brooklyn NY, US

Assignee:

Denovo Lighting, LLC - Brooklyn NY

International Classification:

H05B037/00
F21V003/00

US Classification:

315185R, 315 51, 362240, 362257, 362800

Abstract:

An LED lamp for mounting to an existing fluorescent lamp fixture having a ballast assembly including ballast opposed electrical contacts, comprising a tubular wall generally circular in cross-section and having tubular wall ends with one or more LEDs positioned within the tubular wall between the tubular wall ends. An electrical circuit provides electrical power from the ballast assembly to the LED(s). The electrical circuit includes at least one metal substrate circuit board and means for electrically connecting the electrical circuit with the ballast assembly. The electrical circuit includes an LED electrical circuit including opposed electrical contacts. Each metal substrate circuit board supports and holds the one or more LEDs and the LED electrical circuit. Each metal substrate circuit board is positioned within the tubular wall between the tubular wall ends. At least one electrical string is positioned within the tubular wall and generally extends between the tubular wall ends.

US Patent:

7067992, Jun 27, 2006

Filed:

Feb 7, 2005

Appl. No.:

11/052328

Inventors:

Susan J. Leong - New York NY, US
John Kit - Brooklyn NY, US

Assignee:

DeNovo Lighting, LLC - Brooklyn NY

International Classification:

H05B 37/02

US Classification:

315291, 315 51, 315308, 315360, 315362, 315DIG 4

Abstract:

A power saving device for a light emitting diode (LED) lamp mounted to an existing fixture for a fluorescent lamp having a ballast assembly and LEDs positioned within a tube and electrical power delivered from the ballast assembly to the LEDs. The LED lamp includes a device for controlling the delivery of the electrical power from the ballast assembly to the LEDs wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such device for controlling can include an on-off switch mounted in the tube or can also include a current driver dimmer mounted in the tube that regulates the amount of power delivered to the LEDs. A computer or logic arrays control the dimmer or power switch. A sensor such as an occupancy motion detection sensor mounted external to the tube or within the tube can send signals to the computer or logic array to trigger a switch or control a dimmer. Two or more such LED lamps with one or more computers or logic arrays in network communication with sensors can be controlled, so as to reduce flickering between lamps when illumination areas are being alternately occupied.

US Patent:

7490957, Feb 17, 2009

Filed:

Aug 5, 2005

Appl. No.:

11/198633

Inventors:

Susan J. Leong - New York NY, US
John Kit - Brooklyn NY, US

Assignee:

DeNovo Lighting, L.L.C. - Brooklyn NY

International Classification:

F21S 31/14

US Classification:

362252, 315 51, 362800

Abstract:

A power saving device for a light emitting diode (LED) lamp mounted to an existing fixture for a fluorescent lamp having a ballast assembly and LEDs positioned within a tube and electrical power delivered from the ballast assembly to the LEDs. The LED lamp includes means for controlling the delivery of the electrical power from the ballast assembly to the LEDs wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such means for controlling include means for detecting the level of daylight in the illumination area of said least one LED in particular a light level photosensor and means for transmitting to the means for controlling a control signal relating to the detected level of daylight from the photosensor. The photosensor can be used in operative association with an on-off switch in power connection to the LEDs, or with a computer or logic gate array in operative association with a dimmer that controls the power to the LEDs. An occupancy sensor that detects motion or a person in the illumination area of the LEDs can be optionally used in association with the photosensor and the computer and dimmer.

US Patent:

20040095078, May 20, 2004

Filed:

Nov 19, 2002

Appl. No.:

10/299870

Inventors:

Susan Leong - New York NY, US

International Classification:

G05F001/00

US Classification:

315/291000

Abstract:

An LED lamp comprising a tubular wall circular, oval, or multi-faceted in cross-section having tubular wall ends. At least one electrical string mounted within the tubular wall extends between the tubular wall ends with at least one LED electrically mounted thereto. Electrical circuit means providing power to at least one LED from the ballast assembly of a fluorescent lamp fixture. Electrical circuit means include an LED circuit including at least one electrical string each having one LED or a plurality of LEDs connected in series thereto. The at least one electrical string can further include two electrical strings in parallel or a plurality of parallel electrical strings. Means for suppressing voltage delivered from the ballast assembly to an LED operating voltage within the design capacity of said plurality of LEDs in electrical connection with the electrical circuit means. The LED lamp can have opposed single-pin or bi-pin electrical contacts for use with ballast opposed single or double contact electrical sockets connected to electronic instant start, electronic rapid start, hybrid, or magnetic ballast assemblies. The means for supporting the LEDs and the LED electrical circuit including the parallel electrical strings can be either a single generally cylindrical self-biased LED circuit board mounted and held in the tubular wall, or a plurality of rigid flat support structures spaced apart and held in the tubular wall. Side-emitting radial beam high-brightness LEDs can be mounted to the support structures.

US Patent:

20080290814, Nov 27, 2008

Filed:

Feb 7, 2006

Appl. No.:

10/567504

Inventors:

Susan J. Leong - New York NY, US
John Kit - Brooklyn NY, US

International Classification:

H05B 41/36

US Classification:

315294

Abstract:

A power saving device for a light emitting diode (LED) lamp mounted to an existing fixture for a fluorescent lamp having a ballast assembly and LEDs positioned within a tube and electrical power delivered from the ballast assembly to the LEDs. The LED lamp includes means for controlling the delivery of the electrical power from the ballast assembly to the LEDs wherein the use of electrical power can be reduced or eliminated automatically during periods of non-use. Such means for controlling can include an on-off switch mounted in the tube or can also include a current driver dimmer mounted in the tube that regulates the amount of power delivered to the LEDs. A computer or logic arrays control the dimmer or power switch. A sensor such as an occupancy motion detection sensor mounted external to the tube or within the tube can send signals to the computer or logic array to trigger a switch or control a dimmer. Two or more such LED lamps with one or more computers or logic arrays in network communication with sensors can be controlled, so as to reduce flickering between lamps when illumination areas are being alternately occupied. Preset or manually set timers can control switches or be used in combination with the computer, logic array, and dimmer.