Abstract: A lighting device (1) comprises a lamp unit (10) for emitting light, a reflector (20) for reflecting the emitted light, and a housing (30) for accommodating both the lamp unit (10) and the reflector (20). Much heat is generated by the lamp unit (10) during operation of the device (1) if the lamp unit (10) comprises a lamp operating at a high power level, such as an ultra high performance lamp, which heat needs to be dissipated to the environment of the lighting device (1). For this purpose, the lighting device (1) is provided with a heat sink (40) arranged between the reflector (20) and the housing (30), which heat sink is thermally coupled to both the reflector (20) and the housing (30). The heat sink (40) comprises metal strips (42) which surround the reflector (20).

Abstract: A method for manufacturing a high-pressure gas discharge lamp assembly comprising a burner (3) and a reflector (1). The burner (3) is fixed to the reflector (1) such that at least a part of the concave light reflecting surface (2) of the reflector (1) surrounds the light emitting part of the burner (3). An end portion (11) of the glass bulb of the burner (3) is embedded in cement (15) in order to fix it in a central hole of the reflector (1). The end portion (11) of the glass bulb of the burner (3) is attached by means of cement (15) to a metal holder (14), and afterwards the metal holder (14) is attached to the reflector (1).