| 摘要 |
The invention relates to an illumination unit that comprises at least a reflector ( 3 ) and a UHP lamp ( 2 ), which UHP lamp has at least one burner ( 20 ) having a discharge chamber ( 21 ), wherein, when the lamp is operating, at least part of the IR light emitted from the burner material of the UHP lamp ( 2 ) makes its way back to at least a part of the burner ( 20 ) by reflection from the reflector ( 3 ) and/or from another component of the illumination unit ( 1 ).
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