Abstract: A head light assembly includes a reflector having a multi-oval reflection surface and a lamp is located at a first focus position of reflection surface of the reflector so that light beams reflected by the reflection surface are focus at a second focus position. A block plate is movably located in the reflector and located between the lamp and a second focus position. A Fresnel lens is connected to the reflector so that the light beams passing the second focus position go through the Fresnel lens and becomes parallel light beams.

Abstract: A light lens assembly includes a reflector and a lamp is located at a center of the reflector. A support member is mounted to an open side of the reflector and a lens is connected to the support member so that the light form the lamp goes through lens. The lens is made by optical material and an oxide film for stopping infrared and ultraviolet lights is coated on a surface of the lens.

Abstract: An apparatus and method for the manufacturing of metal salt gas discharge lamps involves a purging assembly which will allow the purging step to be conducted outside a dry box, while completely shielding the fiber material from possible exposure to the atmosphere, so as to simplify the manufacturing process and reduce operation cost. The purging assembly comprises a manifold, which is removably connected to a vacuum pump and an inert gas supply, respectively. The manifold is provided with a plurality of branch tubes connected thereto. Each of the branch tubes is adapted to be connected to a lamp envelope via a ball valve, which provides a straight passage way therethrough when opened. During the purging operations, the ball valves respectively connecting the lamp envelopes and the branch tubes are open to thereby allow moisture and other undesirable components to be purged from the lamp envelope.