Abstract: A method and a control apparatus for driving a lamp 14 in a lighting system, in particular a lamp having a fast response to a change of an amount of energy supplied through the lamp, in which a device controller 8 is connected with the lamp 14. The device controller 8 receives data values from a system controller 2 to change a light output level of the lamp 14. Upon receiving a data value which is different from a previously received data value the device controller calculates additional data values and distribute the additional data values in a following time interval to smoothen a transition between different light output levels of the lamp 14.

Abstract: A method and a control apparatus for driving a lamp 14 in a lighting system, in particular a lamp having a fast response to a change of an amount of energy supplied through the lamp, in which a device controller 8 is connected with the lamp 14. The device controller 8 receives data values from a system controller 2 to change a light output level of the lamp 14. Upon receiving a data value which is different from a previously received data value the device controller calculates additional data values and distribute the additional data values in a following time interval to smoothen a transition between different light output levels of the lamp 14.

Abstract: A method and a control apparatus for driving a lamp (14) in a lighting system, in particular a lamp laving a fast response to a change of an amount of energy supplied through the lamp, in which a device controller 8 is connected with the lamp (14) The device controller (8) receives data values from a system controller (2) to change a light output level of the lamp (14). Upon receiving a data value which is different from a previously received data value the device controller calculates additional data values and distribute the additional data values in a following, time interval to smoothen a transition between different light output levels of the lamp (14).

Abstract: A housing includes a hood having an opening which is closed by a lid having a lampholder fixed thereto so that the lampholder extends through an opening in a reflector fixed in the housing, and a lamp held by the lampholder is positioned in the reflector. Electrical connection is provided by a plug mounted to the lid and a socket mounted to the housing. The lid is releasable by means of arms which pivot in response to pulling a knob on the lid, whereby the lid and lampholder can be removed with one hand. The hood is hinged so that it can pivot only when the lid is removed.