Lamp system having a gas-discharge lamp and operating method adapted therefor
AssigneeHeraeus Noblelight GmbH
InventorJan Winderlich
Life of this patent
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Abstract
A lamp system, and a method of operating the lamp system, are provided. The lamp system includes a gas discharge lamp, an electronic ballast and a control unit. A performance influencing control variable of the lamp system is used. The method allows operation with a high emission performance independent of the design thereof and of any potential changes caused by lamp aging and without any knowledge of the optimal operating temperature. According to the invention a light intensity control is provided, in which an actual value of a light intensity emitted by the gas discharge lamp is measured using a light sensor and the emitted light intensity is used as an actuating variable.
Claims17
A method for operating a lamp system including a gas discharge lamp, an electronic ballast and a control unit for controlling a performance influencing control variable of the lamp system, the method comprising the steps of:
- providing a light intensity control in which an actual value of a light intensity emitted by the gas discharge lamp is measured using a light sensor and the emitted light intensity is used as a control variable;
- and
- determining a target value for an actuating variable using an extremum control, at which target value the light intensity adopts a maximum (UVmax) or a predefined threshold value (UVduration).
A method for operating a lamp system including a gas discharge lamp, an electronic ballast and a control unit for controlling a performance influencing control variable of the lamp system, the method comprising the steps of:
- providing a light intensity control in which an actual value of a light intensity emitted by the gas discharge lamp is measured using a light sensor and the emitted light intensity is used as a control variable;
- and
- predefining a threshold value of the light intensity (UVduration), wherein falling below this threshold value indicates an end of a service life of the gas discharge lamp, and in that this threshold value is used as a desired value of the light intensity control.
A lamp system comprising:
- a gas discharge lamp;
- an electronic ballast;
- a control unit for controlling a performance influencing control variable of the lamp system, the control unit including a device for extremum control, and
- a light sensor for determining an actual value of a light intensity emitted by the gas discharge lamp;
- wherein control is configured as a light intensity control wherein the emitted light intensity is used as a control variable, wherein the actual value of the light intensity is available at a signal input of the control unit as an input signal, and wherein a target value for an actuating variable is determined, at which target value the light intensity adopts a maximum (UVmax) or a predefined threshold value (UVduration).
Dependencies are inferred from the claim text.