Patent application number | Description | Published |
20090122530 | SOLID STATE ILLUMINATION SYSTEM WITH IMPROVED COLOR QUALITY - Disclosed herein are solid state illumination systems which provide improved color quality and/or color contrast. The systems provide total light having delta chroma values for each of the fifteen color samples of the color quality scale that are preselected to provide enhanced color contrast relative to an incandescent or blackbody light source, in accordance with specified values which depend on color temperature. Illumination systems provided herein may comprise one or more organic electroluminescent element, or they may comprise a plurality of inorganic light emitting diodes, wherein at least two inorganic light emitting diodes have different color emission bands. Methods for the manufacture of illumination systems having improved color quality and/or color contrast are also provided. | 05-14-2009 |
20090256460 | METHOD FOR PREVENTING OR REDUCING HELIUM LEAKAGE THROUGH METAL HALIDE LAMP ENVELOPES - A lamp and method for the reduction of gas loss in a high temperature lamp includes providing a light source and a surrounding shroud, using a fill gas outside of the light source and inside the shroud having a thermal conductance greater than nitrogen, and modifying the shroud so that it contains at least 20% of the initial fill gas for at least the rated life of lamp operation. The shroud is preferably modified by one or more of selecting the shroud material, controlling the thickness of the shroud, providing a coating on the shroud, and the selection of the fill gas. | 10-15-2009 |
20100019642 | GAS-FILLED SHROUD TO PROVIDE COOLER ARCTUBE - A lamp is provided having an arctube having a light-transmitting envelope. The arctube is surrounded by a gaseous medium confined by a containment envelope such as a hermetic shroud. The gaseous medium is preferably He or H | 01-28-2010 |
20100109529 | ARCTUBE FOR INDUCTION HIGH INTENSITY DISCHARGE LAMP - An oblate spheroidal arctube body geometry provides for a significant reduction in stress cracks and results in lamps that operate at greater than 400 watts for extended periods of time leading up to greater than 20,000 hours. Preferably, the major diameter (OD) ranges between approximately 20 and 40 mm. Wall thickness (T) is preferably on the order of approximately 1.0 to 3.0 mm. An aspect ratio defined as AR (major axial dimension/minor axial dimension) is preferably between 1.1 and 2.0. A radius of curvature (R1) between the spheroidal portion and the leg of the arctube body preferably ranges from—approximately 3 mm to 12 mm or which can be expressed as a curvature 1/R1 ranging from 0.08 to 0.33 mm | 05-06-2010 |
20100109831 | INDUCTION COIL WITHOUT A WELD - A multi-turn coil formed from a single sheet of conductive material and the method of forming same eliminates the use of a weld. The multi-turn coil includes a single sheet of conductive material having at least a first turn in a first plane, and at least a second turn in a second plane, where the first plane is parallel to the second plane. An interconnecting fold interconnects the first and second turns, and any additional turns. The method of forming a multiple turn coil includes providing a continuous strip of conductive material having at least first and second turns extending through substantially 360° and formed in a first plane. The method further includes displacing at least the first turn from the first plane into generally overlapping, parallel relation with the second turn. | 05-06-2010 |
20100110694 | COMPACT BEAM FORMER FOR INDUCTION HID LAMP - A light distribution assembly includes an electrodeless HID light source providing emitted light along substantially first and second hemispherical zones. A first optical element redirects a portion of light from the first hemispherical zone into a first desired direction in the second hemispherical zone. A second optical element redirects at least a portion of light within the second hemispherical zone. Other optical elements may be added to tailor the light distribution. Various combinations of these components may be used to create the desired illumination pattern. | 05-06-2010 |
20130021794 | LIGHTING APPARATUS WITH A LIGHT SOURCE COMPRISING LIGHT EMITTING DIODES - Embodiments of a lighting apparatus with a light source using one or more light emitting diodes (LEDs) to generate light. In one embodiment, the lighting apparatus comprises a light diffusing assembly that generates an optical intensity profile consistent with incandescent lamps. The light diffusing assembly comprises an envelope and a reflector element having frusto-conical member and an aperture element disposed therein. The lighting apparatus can also comprise a heat dissipating assembly with a plurality of heat dissipating elements disposed annularly about the envelope. In one example, the heat dissipating elements are spaced apart from the envelope to promote convective heat dissipation. | 01-24-2013 |
20130056783 | THERMAL MANAGEMENT IN LARGE AREA FLEXIBLE OLED ASSEMBLY - A large area, flexible, OLED assembly has improved thermal management by providing a metal cathode of increased thickness of at least 500 nm. A thermal heat sink trace may be used as alternative or in conjunction with the increased thickness cathode where the trace leads from a central region of the OLED toward a perimeter region, or by other backsheet thermal management designs. External heat sinking, for example to a plate, fixture, etc. may be additionally used or in conjunction with the increased thickness cathode and/or backsheet design to provide further thermal management. | 03-07-2013 |
20130201680 | LED LAMP WITH DIFFUSER HAVING SPHEROID GEOMETRY - Embodiments of a lamp are described that use light emitting diodes (LEDs) to generate an intensity distribution that is consistent with incandescent lamps. In one embodiment, the lamp comprises a diffuser having a spheroid geometry with a light reflective upper portion and a light transmissive lower portion. The lamp also includes a thermal management system with a plurality of optically active heat dissipating elements disposed annularly about the diffuser. In one example, the heat dissipating elements are spaced apart from the diffuser to promote convective heat dissipation. | 08-08-2013 |
20130279174 | METHODS FOR TAILORING THE PROPERTIES OF A REFLECTIVE COATING - Methods are provided for forming a reflective coating by applying a precursor material onto the substrate; soft curing the precursor material at a first curing energy level; and thereafter, hard curing the precursor material at a second curing energy level having a higher amount of energy than the first curing energy level to form the reflective coating. Other methods are provided for forming a reflective coating a surface of a plastic substrate by heating the surface of the plastic substrate to a deposition temperature, applying a polymeric resin onto the heated surface, and crosslinking the polymeric resin to form the reflective coating. The polymeric resin can include a cross-linkable powder, a cross-linker, and a pigment, with the deposition temperature being about 10° C. or greater than the melting point of the cross-linkable binder. Lighting apparatus formed from such methods are also provided. | 10-24-2013 |
20140063798 | THERMAL SOLUTION FOR LED CANDELABRA LAMPS - A lighting device that uses one or more LEDs, an optical element (e.g, diffuser), and a heat sink to provide thermal management is provided. The overall shape of the lighting device, particularly the heat sink, can be configured to imitate the appearance of a traditional incandescent candelabra lamp. One or more features are also provided to assist with the conduction of heat away from the LED(s) and to the heat sink. The lighting device can provide improved lumen output and light distribution. | 03-06-2014 |
20140070690 | LIGHTING APPARATUS WITH A LIGHT SOURCE COMPRISING LIGHT EMITTING DIODES - Embodiments of a lighting apparatus with a light source using one or more light emitting diodes (LEDs) to generate light. In one embodiment, the lighting apparatus comprises a light diffusing assembly that generates an optical intensity profile consistent with incandescent lamps. The light diffusing assembly comprises an envelope and a reflector element having frusto-conical member and an aperture element disposed therein. The lighting apparatus can also comprise a heat dissipating assembly with a plurality of heat dissipating elements disposed radially about the envelope. In one example, the heat dissipating elements are spaced apart from the envelope to promote convective heat dissipation. | 03-13-2014 |
20140160766 | LENS-REFLECTOR COMBINATION FOR BATWING LIGHT DISTRIBUTION - The present subject matter is directed to a system and method for producing a batwing light distribution. A lens is illuminated with a light source, preferably an LED, and the lens is configured to internally reflect a portion of the illuminating light back in a direction generally opposite to the initial illumination direction. Another portion of the light from the light source may pass through other lens surfaces but may also be reflected back past the light source with a reflector positioned on the other side of the lens from the light source. The light source may be mounted on a frame so as to obscure light therefrom from view. | 06-12-2014 |
20150030764 | PROCESS FOR RECLAIMING INORGANIC POWDERS FROM POLYMER-BASED COATING COMPOSITIONS - Processes for recovering inorganic powder materials from polymer-based coating compositions used to deposit a polymer-based coating. The process includes combining a polymer precursor, first solvent, and inorganic powder material to form a suspension, and applying the suspension to a substrate to form a layer. At least a portion of the suspension that did not adhere to the substrate is then collected. Residual portions of the first solvent and polymer precursor are at least partially removed from this portion of the suspension to yield a crude inorganic powder material comprising a residual portion of the inorganic powder and optionally a partially-cured polymer precursor, the latter of which can be removed by treating the crude inorganic powder material with a second solvent. | 01-29-2015 |