Abstract: A projection lamp includes a bulb, a main reflective cover and a secondary reflective cover. The bulb includes a wick and a lamp tube which wraps the wick. The wick is configured to emit divergent light beams while the bulb is lit up. The main reflective cover is connected to the lamp tube and includes a main reflective surface facing the wick. The main reflective surface is configured to convert the divergent light beams into projection beams. The secondary reflective cover is melt bonded to the lamp tube and includes a secondary reflective surface facing both of the wick and the main reflective surface. The secondary reflective surface is configured to reflect a portion of the divergent light beams, cannot be directly emitted onto the main reflective surface, onto the main reflective surface while the bulb is lit up.

Abstract: A gas discharge lamp includes a lamp tube, two electrodes and an electron emitter. The lamp tube has a hermetic discharge chamber filled with a rare gas and two sealing neck portions. Each of the sealing neck portions has a metallic foil disposed therein. Each of the two electrodes includes an emitting part and a connecting part. The connecting part is connected to a metallic wire via the metallic foil. The metallic wire extends out of the sealing neck portion to form a circuit contact. The electron emitter is made of a conductive material and electrically connected to one of the electrodes. A portion of the electron emitter disposed in the hermetic discharge chamber, and a diameter of an end of the electron emitter in the hermetic discharge chamber is less than an outer diameter of the connecting part.