Abstract: An integrated optic lamp assembly includes a rigid mounting structure, a base, a light source, and a reflector. The base, light source, and reflector are supported by the mounting structure. The base is configured to operationally connect to a light source socket. The reflector is configured and positioned relative to the light source to distribute light emitted from said light source in a predetermined light distribution pattern.

Abstract: Methods and apparatuses for starting a discharge lamp are disclosed. In some embodiments, a lamp has an outer envelope connected at one end to a base and enclosing multiple double-ended arc tubes. Each arc tube is electrically connected at one end to an electrical lead positioned proximate the base of the lamp and at the other end to an electrical lead positioned proximate the distal end of the envelope. A voltage pulse is applied to the electrical lead positioned proximate the distal end of the envelope. Random starting of the arc tubes may thus be effected so that each arc tube is about equally likely to start, promoting uniformity of arc tube usage and long lamp life. Multiple arc tubes may be bulbous and staggered in axial displacement for space efficiency, and a diffusing shroud may improve optical characteristics. A heat barrier may facilitate fast restrikes.