Patents by Inventor Don Barnetson
Don Barnetson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9714743Abstract: A retrofit light emitting diode (LED) lamp is provided for replacement of ballast driven fluorescent lamps. The retrofit LED lamp comprises a plurality of light emitting diodes. The plurality of light emitting diodes is mounted on a metal core printed circuit board (MCPCB). A PCB circuit is provided for driving the plurality of LEDs that further comprises a bridge rectifier made of a schottky diode.Type: GrantFiled: May 10, 2015Date of Patent: July 25, 2017Assignee: Lunera Lighting, Inc.Inventors: Don Barnetson, Peter Shen, Chris Miao
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Patent number: 9686828Abstract: A LED retrofit lamp for replacement of fluorescent lamp or tube driven by fluorescent ballast is provided. The retrofit lamp is compatible with the fluorescent ballast that requires the presence of a barrier for striking an arc voltage. The present invention provides a strike barrier—a controllable barrier that does not allow current conduction until a threshold voltage is reached. When a current above the threshold voltage passes through the strike barrier, the circuit latches and allows conduction at normal voltage. The present invention also provides a circuit that replicates the cathode heater resistance of a fluorescent lamp to rapid start and programmed start ballast.Type: GrantFiled: June 15, 2014Date of Patent: June 20, 2017Assignee: Lunera Lighting, Inc.Inventors: Don Barnetson, Joel Snook, Junyun Wang, Ardeshir Esmaeili
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Patent number: 9551463Abstract: A retrofit LED lighting system with a combination of a directional downlight component and an indirect uplight component is provided. The system comprises light emitting diodes arranged so as to replicate the function of a legacy light source in a transparent or translucent fixture housing. The LED lamp includes upwards facing LEDs emitting light upwards, and a translucent stem covering the uplight LEDs to allow the light from the LEDs to pass through it. Advantageously, the LED lamp with uplight component and a transparent/translucent stem allows the light to be directed upwards and hence, avoids having a sharp cut-off of light appearing in the middle of the reflector fixture and also avoids a lack of uplight shone on the ceiling.Type: GrantFiled: September 21, 2015Date of Patent: January 24, 2017Assignee: LUNERA LIGHTING INC.Inventors: Don Barnetson, Daryl Cheim, John X. Zhang, Ardeshir Esmaeili
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Patent number: 9468054Abstract: A light emitting diode retrofit lamp for replacement of fluorescent lamp or tube driven by fluorescent ballast is provided. The retrofit lamp consists of an enhanced circuit that overcomes the compatibility issues with the fluorescent ballasts. The circuit of the retrofit lamp comprises a deflickerizer circuit that prevents the flicker in the lamp when the lamp operates in the frequency range of 0.1 Hz to 60 Hz. The deflickerizer circuit further provides a method to align frequency with the ballast frequency and maintains phase to avoid low frequency interference.Type: GrantFiled: June 10, 2014Date of Patent: October 11, 2016Assignee: LUNERA LIGHTING, INC.Inventors: Don Barnetson, Joel Snook, Junyun Wang, Ardeshir Esmaeili
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Patent number: 9468060Abstract: An embodiment of the present invention provides a retrofit LED lamp that is operated by a dual mode circuit, enabling maximum compatibility with the ANSI reference ballasts to satisfy UL requirements to replace HID and fluorescent lamps. The LED lamp operates at two different modes, offered by the dual mode PCB circuit. In one of the mode, namely ANSI ballast testing, a low frequency current from the ballast is throttled through a bypass circuit to LEDs, since a field effect transistor of the circuit is in open circuit mode due to insufficient current. During the second mode, namely field ballast operation, a high frequency current is provided by the ballast, which short circuits the FET, causing it to conduct and thus operating the LEDs. Advantageously, the LED lamp offers maximum compatibility with ballasts using such dual mode circuit and consumes less power.Type: GrantFiled: March 4, 2015Date of Patent: October 11, 2016Assignee: LUNERA LIGHTING, INC.Inventors: Don Barnetson, Daryl Cheim, Josef Kirmeier, Ben Wang
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Publication number: 20160262220Abstract: An embodiment of the present invention provides a retrofit LED lamp that is operated by a dual mode circuit, enabling maximum compatibility with the ANSI reference ballasts to satisfy UL requirements to replace HID and fluorescent lamps. The LED lamp operates at two different modes, offered by the dual mode PCB circuit. In one of the mode, namely ANSI ballast testing, a low frequency current from the ballast is throttled through a bypass circuit to LEDs, since a field effect transistor of the circuit is in open circuit mode due to insufficient current. During the second mode, namely field ballast operation, a high frequency current is provided by the ballast, which short circuits the FET, causing it to conduct and thus operating the LEDs. Advantageously, the LED lamp offers maximum compatibility with ballasts using such dual mode circuit and consumes less power.Type: ApplicationFiled: March 4, 2015Publication date: September 8, 2016Inventors: Don Barnetson, Daryl Cheim, Josef Kirmeier, Ben Wang
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Publication number: 20160128154Abstract: The present invention provides an improved lighting system, for an LED lamp, with built-in intelligence and a controlling unit. The controlling unit comprises one or more field effect transistors and a microcontroller. The microcontroller creates a pulse width modulated signal at a frequency of approximately 120 Hz-50 kHz to field effect transistors. Further, the field effect transistors are connected in series with the LED lamp so that the microcontroller modulates a switching power converter, in addition to modulating a parallel field effect transistor.Type: ApplicationFiled: September 28, 2015Publication date: May 5, 2016Inventors: Don Barnetson, Daryl Cheim, George Xie, Junyung Wang
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Publication number: 20160010804Abstract: A retrofit LED lighting system with a combination of a directional downlight component and an indirect uplight component is provided. The system comprises light emitting diodes arranged so as to replicate the function of a legacy light source in a transparent or translucent fixture housing. The LED lamp includes upwards facing LEDs emitting light upwards, and a translucent stem covering the uplight LEDs to allow the light from the LEDs to pass through it. Advantageously, the LED lamp with uplight component and a transparent/translucent stem allows the light to be directed upwards and hence, avoids having a sharp cut-off of light appearing in the middle of the reflector fixture and also avoids a lack of uplight shone on the ceiling.Type: ApplicationFiled: September 21, 2015Publication date: January 14, 2016Applicant: LUNERA LIGHTING INC.Inventors: Don Barnetson, Daryl Cheim, John X. Zhang, Ardeshir Esmaeili
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Publication number: 20150366008Abstract: A LED retrofit lamp for replacement of fluorescent lamp or tube driven by fluorescent ballast is provided. The retrofit lamp is compatible with the fluorescent ballast that requires the presence of a barrier for striking an arc voltage. The present invention provides a strike barrier—a controllable barrier that does not allow current conduction until a threshold voltage is reached. When a current above the threshold voltage passes through the strike barrier, the circuit latches and allows conduction at normal voltage. The present invention also provides a circuit that replicates the cathode heater resistance of a fluorescent lamp to rapid start and programmed start ballast.Type: ApplicationFiled: June 15, 2014Publication date: December 17, 2015Inventors: Don Barnetson, Joel Snook, Junyun Wang, Ardeshir Esmaeili
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Publication number: 20150359059Abstract: A light emitting diode retrofit lamp for replacement of fluorescent lamp or tube driven by fluorescent ballast is provided. The retrofit lamp consists of an enhanced circuit that overcomes the compatibility issues with the fluorescent ballasts. The circuit of the retrofit lamp comprises a deflickerizer circuit that prevents the flicker in the lamp when the lamp operates in the frequency range of 0.1 Hz to 60 Hz. The deflickerizer circuit further provides a method to align frequency with the ballast frequency and maintains phase to avoid low frequency interference.Type: ApplicationFiled: June 10, 2014Publication date: December 10, 2015Inventors: Don Barnetson, Joel Snook, Junyun Wang, Ardeshir Esmaeili
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Publication number: 20150252958Abstract: An edge lit LED tube that can control light compatible with different ballast such as instant start, rapid start and programmed start is provided. The edge lit LED tube can tune the output light angle by controlling the etching of the acrylic light guide. An edge lit LED tube that has no minimum LED count and can be driven from a single LED is further provided.Type: ApplicationFiled: March 7, 2014Publication date: September 10, 2015Applicant: Lunera Lighting, Inc.Inventors: Don Barnetson, Daryl Cheim, Junyun Wang, George Xie
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Publication number: 20150241000Abstract: A retrofit light emitting diode (LED) lamp is provided for replacement of ballast driven fluorescent lamps. The retrofit LED lamp comprises a plurality of light emitting diodes. The plurality of light emitting diodes is mounted on a metal core printed circuit board (MCPCB). A PCB circuit is provided for driving the plurality of LEDs that further comprises a bridge rectifier made of a schottky diode.Type: ApplicationFiled: May 10, 2015Publication date: August 27, 2015Inventors: Don Barnetson, Peter Shen, Chris Miao
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Patent number: 9028105Abstract: A 4 pin LED retrofit lamp for replacement of socket fitted CFL lamp driven by fluorescent ballast is provided. The retrofit lamp comprises a plurality of LEDS in connection with the fluorescent ballast. The circuit of the lamp comprises a bridge rectifier that converts the AC waveform into DC and a capacitor to filter the resulting waveform.Type: GrantFiled: May 2, 2013Date of Patent: May 12, 2015Inventors: Don Barnetson, Peter Shen, Chris Miao
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Patent number: D796076Type: GrantFiled: December 22, 2014Date of Patent: August 29, 2017Assignee: LUNERA LIGHTING INC.Inventors: Don Barnetson, Daryl Cheim, George Xie