| Patent application number | Description | Published |
|---|
| 20100090609 | 3-WAY LED BULB - Circuits to make a 3-way LED light bulb correctly interface to a standard 3-way light socket, producing three levels of light corresponding to the three settings of the socket. One of the circuits prevents color shift due to varying LED current. | 04-15-2010 |
| 20100301727 | PHOSPHOR-CONTAINING LED LIGHT BULB - An LED bulb, which includes a shell, a filler material within the shell of the bulb, at least one type of phosphor dispersed inside the filler material and at least one LED within the shell. | 12-02-2010 |
| 20110050098 | GLASS LED LIGHT BULBS - A glass LED bulb, which includes a body of glass, the body having at least one hollow portion, and at least one LED contained within the at least one hollow portion. A thermally conductive material is preferably included within the at least one hollow portion. The body of glass can be bulb-shaped or alternatively shaped like an incandescent bulb. | 03-03-2011 |
| 20110193465 | ANTI-REFLECTIVE COATINGS FOR LIGHT BULBS - A light bulb having anti-reflective coatings on an inner surface and/or an outer surface of the shell of the light bulb. The anti-reflective coatings reduce light loss due to reflections at the interfaces between the interior of the bulb and the shell and between the shell and the exterior of the bulb. The light source may be either incandescent, fluorescent or LED. | 08-11-2011 |
| 20110204777 | SETTABLE LIGHT BULBS - A settable light bulb whose brightness can be set by the user, and more particularly, to the use of a switch or a slide built in to the bulb itself to control the brightness in either discrete or continuous increments. | 08-25-2011 |
| 20110210669 | END-OF LIFE CIRCUITRY - An LED light bulb which turns itself permanently off when it reaches the end of its useful life, and more particularly, to a scheme which slightly varies the end-of-life condition from unit to unit. | 09-01-2011 |
| 20110215728 | CONSTANT POWER LED CIRCUIT - A constant power drive for light emitting diodes, such that there is automatic compensation for variation in forward voltage of the LED, both in a single unit with temperature, and also due to unit-to-unit variations. | 09-08-2011 |
| 20110298374 | THERMAL PROTECTION CIRCUIT FOR AN LED BULB - A light-emitting diode (LED) bulb has an LED within a shell. The LED bulb also includes a driver circuit for providing current to the LED. The drive circuit has a thermal protection circuit, which includes a thermistor having a positive thermal coefficient and a switching temperature. The driver circuit also includes a switch-mode power supply (SMPS) controller with an input pin and an output pin. The thermistor is connected to the input pin. When the thermistor temperature is above the switching temperature, the thermal protection circuit causes the SMPS controller to produce a signal with a second duty cycle on the output pin. When the thermistor temperature is below the switching temperature, the thermal protection circuit causes the SMPS controller to produce a signal with a first duty cycle on the output pin. The second duty cycle is higher than the first duty cycle. | 12-08-2011 |
| 20120098443 | WHITE AC LED - A multi-color white LED which can be driven by a single current, and more particularly, to the use of a specific ratio of numbers of different color LEDs to obtain a specific desired color while running all of them at the same current. | 04-26-2012 |
| 20120229018 | METHOD OF LIGHT DISPERSION AND PREFERENTIAL SCATTERING OF CERTAIN WAVELENGTHS OF LIGHT-EMITTING DIODES AND BULBS CONSTRUCTED THEREFROM - A light emitting diode (LED) bulb configured to scatter certain wavelengths of light. The LED bulb includes a base having threads, a bulb shell, at least one LED, and a plurality of particles disposed within the bulb shell. The plurality of particles has a first and second set of particles. The first set of particles is configured to scatter short wavelength components of light emitted from the at least one LED and has particles with an effective diameter that is a fraction of the dominant wavelength of the light emitted from the at least one LED. The second set of particles is configured to scatter light emitted from the at least one LED, and has particles with an effective diameter equal to or greater than the dominant wavelength of the light emitted from the at least one LED. | 09-13-2012 |
| 20120235586 | 3-WAY LED BULB - A lighting circuit for a light emitting diode (LED) bulb capable of operating at different light output levels depending on received AC power includes a first group of LEDs and second group of LEDs, each of which is configured to emit light as a group. The lighting circuit also includes an AC/DC converter electrically connected to the first and second groups of LEDs. A detector circuit detects received AC power. A selection circuit is operable to cause the AC/DC converter circuit to provide current into one configuration of LEDs from the group of configurations of LEDs consisting of: the first group of LEDs only, the second group of LEDs only, and the first and second group of LEDs. The configuration of LEDs to provide current to is selected based on received AC power. | 09-20-2012 |
| 20130026932 | SINGLE INDUCTOR CONTROL OF MULTI-COLOR LED SYSTEMS - A circuit for driving multiple light emitting diodes (LEDs) includes at least two sets of LEDs, each set comprised of one or more LEDs in series. The circuit further includes a single inductor connected in series with the two sets of LEDs. At least one set of LEDs is connected to a shunting transistor connected in parallel with the set of LEDs. The duty cycle of the shunting transistor is controlled by a single controller connected to the shunting transistor and the inductor. | 01-31-2013 |
| 20130033179 | THERMAL PROTECTION CIRCUIT FOR AN LED BULB - A light-emitting diode (LED) bulb has an LED within a shell. The LED bulb includes a driver circuit for providing current to the LED. The drive circuit has a thermal protection circuit, which includes a first positive thermal coefficient thermistor with a first switching temperature connected in series with a second positive thermal coefficient thermistor with a second switching temperature. The driver circuit includes a switch-mode power supply (SMPS) controller with an input pin and an output pin. The thermistors are connected to the input pin. When either thermistor temperature is above the respective switching temperatures, the thermal protection circuit causes the SMPS controller to produce a signal with a second duty cycle on the output pin. When both thermistor temperatures are below the respective switching temperatures, the thermal protection circuit causes the SMPS controller to produce a signal with a first duty cycle on the output pin. | 02-07-2013 |
| 20130223047 | GLASS LED LIGHT BULBS - A glass LED bulb, which includes a body of glass, the body having at least one hollow portion, and at least one LED contained within the at least one hollow portion. A thermally conductive material is preferably included within the at least one hollow portion. The body of glass can be bulb-shaped or alternatively shaped like an incandescent bulb. | 08-29-2013 |
| 20130264933 | PHOSPHOR-CONTAINING LED LIGHT BULB - An LED bulb, which includes a shell, a filler material within the shell of the bulb, at least one type of phosphor dispersed inside the filler material and at least one LED within the shell. | 10-10-2013 |
| 20130293085 | ANTI-REFLECTIVE COATINGS FOR LIGHT BULBS - A light bulb having anti-reflective coatings on an inner surface and/or an outer surface of the shell of the light bulb. The anti-reflective coatings reduce light loss due to reflections at the interfaces between the interior of the bulb and the shell and between the shell and the exterior of the bulb. The light source may be either incandescent, fluorescent or LED. | 11-07-2013 |
| 20140028182 | METHOD OF LIGHT DISPERSION AND PREFERENTIAL SCATTERING OF CERTAIN WAVELENGTHS OF LIGHT FOR LIGHT-EMITTING DIODES AND BULBS CONSTRUCTED THEREFROM - A light emitting diode (LED) bulb configured to scatter certain wavelengths of light. The LED bulb includes a base having threads, a bulb shell, at least one LED, and a plurality of particles disposed within the bulb shell. The plurality of particles has a first and second set of particles. The first set of particles is configured to scatter short wavelength components of light emitted from the at least one LED and has particles with an effective diameter that is a fraction of the dominant wavelength of the light emitted from the at least one LED. The second set of particles is configured to scatter light emitted from the at least one LED, and has particles with an effective diameter equal to or greater than the dominant wavelength of the light emitted from the at least one LED. | 01-30-2014 |
| 20140028207 | SINGLE INDUCTOR CONTROL OF MULTI-COLOR LED SYSTEMS - A circuit for driving multiple light emitting diodes (LEDs) includes at least two sets of LEDs, each set comprised of one or more LEDs in series. The circuit further includes a single inductor connected in series with the two sets of LEDs. At least one set of LEDs is connected to a shunting transistor connected in parallel with the set of LEDs. The duty cycle of the shunting transistor is controlled by a single controller connected to the shunting transistor and the inductor. | 01-30-2014 |
| 20140117864 | WHITE AC LED - A multi-color white LED which can be driven by a single current, and more particularly, to the use of a specific ratio of numbers of different color LEDs to obtain a specific desired color while running all of them at the same current. | 05-01-2014 |
| 20140167592 | HEAT REMOVAL DESIGN FOR LED BULBS - An LED bulb having bulb-shaped shell and thermally conductive fluid or gel within the shell. The bulb includes at least one LED within the shell. The bulb includes at least one LED within the shell and a base. The base can be configured to fit within an electrical socket and can include a series of screw threads and a base pin, wherein the screw threads and base pin are dimensioned to be received within a standard electrical socket. Alternatively, the base can be configured to fit within a suitable electric socket. | 06-19-2014 |
| 20140175973 | PHOSPHOR-CONTAINING LED LIGHT BULB - An LED bulb, which includes a shell, a filler material within the shell of the bulb, at least one type of phosphor dispersed inside the filler material and at least one LED within the shell. | 06-26-2014 |
| 20140184058 | METHOD OF LIGHT DISPERSION AND PREFERENTIAL SCATTERING OF CERTAIN WAVELENGTHS OF LIGHT FOR LIGHT-EMITTING DIODES AND BULBS CONSTRUCTED THEREFROM - A light emitting diode (LED) bulb configured to scatter certain wavelengths of light. The LED bulb includes a base having threads, a bulb shell, at least one LED, and a plurality of particles disposed within the bulb shell. The plurality of particles has a first and second set of particles. The first set of particles is configured to scatter short wavelength components of light emitted from the at least one LED and has particles with an effective diameter that is a fraction of the dominant wavelength of the light emitted from the at least one LED. The second set of particles is configured to scatter light emitted from the at least one LED, and has particles with an effective diameter equal to or greater than the dominant wavelength of the light emitted from the at least one LED. | 07-03-2014 |
| 20140218930 | PLASTIC LED BULB - An LED bulb having a bulb-shaped shell, a thermally conductive plastic material within the bulb-shaped shell, and at least one LED within the bulb-shaped shell. The bulb also includes a base, wherein the base is dimensioned to be received within a standard electrical socket. | 08-07-2014 |
| 20140327368 | 3-WAY LED BULB - A lighting circuit for a light emitting diode (LED) bulb capable of operating at different light output levels depending on received AC power includes a first group of LEDs and second group of LEDs, each of which is configured to emit light as a group. The lighting circuit also includes an AC/DC converter electrically connected to the first and second groups of LEDs. A detector circuit detects received AC power. A selection circuit is operable to cause the AC/DC converter circuit to provide current into one configuration of LEDs from the group of configurations of LEDs consisting of: the first group of LEDs only, the second group of LEDs only, and the first and second group of LEDs. The configuration of LEDs to provide current to is selected based on received AC power. | 11-06-2014 |
| 20140333193 | GLASS LED LIGHT BULBS - A glass LED bulb, which includes a body of glass, the body having at least one hollow portion, and at least one LED contained within the at least one hollow portion. A thermally conductive material is preferably included within the at least one hollow portion. The body of glass can be bulb-shaped or alternatively shaped like an incandescent bulb. | 11-13-2014 |
| 20140346960 | CONSTANT POWER LED CIRCUIT - A constant power drive for light emitting diodes, such that there is automatic compensation for variation in forward voltage of the LED, both in a single unit with temperature, and also due to unit-to-unit variations. | 11-27-2014 |
