Abstract: A high-pressure discharge lamp assembly has a discharge lamp (1) and a concave reflector (11) arranged around a longitudinal axis (30). The discharge lamp is closed in a gastight manner and comprises a first and second end portion (3, 4) and an ionizable gas filling, and in which a pair of electrodes (5, 6) is arranged. A first and a second current-supply conductor (7, 8) are connected to the pair of electrodes and issue to the exterior of the discharge lamp (1). The first end portion of the discharge lamp extends through an opening (14) arranged in a center section of the reflector. A conduction member (9) is connected to the second current-supply conductor and extends through the opening in the center section of the reflector. The conduction member is connected to a contact member provided on a surface of the reflector facing away from the discharge lamp.

Abstract: A lamp assembly comprising a high-pressure gas discharge lamp (2) and a housing (1) surrounding the lamp, as well as a reflector (3) for directing the light substantially to one direction through a transparent portion (9) of the wall of the housing (1). The housing (1) is substantially gas-tight, and cooling means (21,22,23,24,30,3 1) are present for displacing air in the housing (1). Said cooling means (21,22,23,24,30,3 1) are located inside the housing (1). Said cooling means preferably comprise a fan (21) located inside the housing (1).

Abstract: The invention relates to a lamp, e.g. a UHP-Lamp, comprising a burner (10) with an ionizable filling and an amount of mercury contained therein, having a housing (30, 60; 20, 30) with at least one port (40), whereby the inner opening surface (50) area of the port/s is adapted to reduce the amount of mercury which is able to expose to the outside after an explosion of the burner (10).

Abstract: The present invention relates to a lamp unit, especially to a UHP lamp unit, comprising a housing, a lamp positioned within said housing, a reflector assigned to said lamp for reflecting light emitted by said lamp through a transmission window, and at least one thermal bridge and/or heat sink unit being assigned to the reflector and/or to the lamp and/or to the housing. The or each thermal bridge and/or heat sink unit is preferably made from a material having a good thermal conductivity, e.g. the or each thermal bridge and/or heat sink is made from metal or ceramics.