Class / Patent application number | Description | Number of patent applications / Date published |
313636000 | Envelope composition | 8 |
20080284338 | Translucent polycrystalline alumina ceramic - A polycrystalline body includes aluminum oxide, magnesium oxide, zirconium oxide, and lutetium oxide. The lutetium oxide is present in an amount of at least 10 ppm of the weight of the ceramic body, and the magnesium and zirconium oxides are present at a molar ratio of from 0.5:1 to 3:1. | 11-20-2008 |
20090066251 | Ceramic Discharge Vessel Having an Opaque Zone and Method of Making Same - An opaque zone in the polycrystalline (PCA) discharge vessel of a high intensity discharge lamp may be made by creating residual pores in predetermined regions of the final-sintered discharge vessel. The control over the placement of the opaque zone is achieved by forming a carbonaceous residue in a specific region of the discharge vessel prior to final sintering. During sintering, the carbonaceous material causes residual porosity in the sintered PCA. The higher emissivity of the opaque PCA provides localized cooling in order to provide more control over the condensate behavior in the discharge vessel. | 03-12-2009 |
20090146569 | LOW-PRESSURE MERCURY VAPOR DISCHARGE LAMP AND APPARATUS FOR TREATMENT - The low-pressure mercury vapor discharge lamp has a lamp envelope ( | 06-11-2009 |
20090267515 | HIGH-PRESSURE DISCHARGE LAMP HAVING A CERAMIC DISCHARGE VESSEL - The invention relates to a high-pressure discharge lamp ( | 10-29-2009 |
20110248630 | SHORT ARC DIMMABLE HID LAMP WITH CONSTANT COLOUR DURING DIMMING - The present disclosure relates to a short arc metal halide lamp without outer jacket, whose arc tube has a specified aspect ratio and chemical filling, characterised in that it delivers a low colour temperature and very high colour rendering index, which are maintained during dimming. | 10-13-2011 |
20110291558 | Ceramic Discharge Vessel Having an Opaque Zone and Method of Making Same - An opaque zone in the polycrystalline (PCA) discharge vessel of a high intensity discharge lamp may be made by creating residual pores in predetermined regions of the final-sintered discharge vessel. The control over the placement of the opaque zone is achieved by forming a carbonaceous residue in a specific region of the discharge vessel prior to final sintering. During sintering, the carbonaceous material causes residual porosity in the sintered PCA. The higher emissivity of the opaque PCA provides localized cooling in order to provide more control over the condensate behavior in the discharge vessel. | 12-01-2011 |
20120306365 | POLYCRYSTALLINE TRANSLUSCENT ALUMINA FOR HIGH INTENSITY DISCHARGE LAMPS - A polycrystalline body comprising a MgO/ZrO2-doped aluminum oxide in which alumina grains have an average size of at least 20 μm and wherein the magnesium oxide is present in an amount of at least 250 ppm and the zirconium oxide is present in an amount of at least about 20 ppm of the weight of the ceramic body, and the magnesium and zirconium oxides are present at a molar ratio of about 1:2 to about 15:1. | 12-06-2012 |
20150357179 | Broadband Light Source Including Transparent Portion with High Hydroxide Content - A laser-sustained plasma light source includes a plasma lamp configured to contain a volume of gas and receive illumination from a pump laser in order to generate a plasma. The plasma lamp includes one or more transparent portions transparent to illumination from the pump laser and at least a portion of the broadband radiation emitted by the plasma. The one or more transparent portions are formed from a transparent material having elevated hydroxide content above 700 ppm. | 12-10-2015 |