Patent ID: 9030099
Filing Date: 2015-05-12
Classification: H01J

Abstract:
1. A lamp comprising: a first non-cycling high pressure arc tube having a first ignition aid; a second arc tube electrically connected in parallel to the first arc tube; and a lamp envelope enveloping the first and second arc tubes wherein the first arc tube has a first ignition aid running lengthwise down the first arc tube and second arc tube has a second ignition aid running lengthwise down the second arc tube and the first and second arc tubes are oriented such that their respective ignition aid strips are effectively 180 degrees +/−45 degrees away from each other axial about a circumference of the respective tube; wherein each of the first and second arc tubes has an inward facing semicylinder portion and an outward facing semicylinder portion, wherein the inward facing semicylinder portions of the arc tubes face each other and the outward facing semicylinder portions are opposite-facing.