Patent ID: 8110968
Filing Date: 2012-02-07
Classification: A61N,G02B

Abstract:
1. An irradiation device ( 1 ) having a radiation source ( 3 ) and a filter ( 5 ) which is arranged in the optical path and has two transparent filter disks ( 11 , 12 ) which are substantially arranged in plane-parallel configuration relative to each other and which are held with their surrounding edges in a frame ( 6 , 7 ) made of a material of good heat conduction, the filter disks ( 11 , 12 ) and the frame ( 6 , 7 ) defining a closed cavity ( 13 ) which has provided therein a medium which selectively influences the radiation spectrum, characterized in that the cavity ( 13 ) is configured in the form of a pressure chamber so that during operation of the irradiation device ( 1 ) overpressure prevails in the cavity ( 13 ) and the filter disks ( 11 , 12 ) are made of glass ceramic or mineral glass, wherein the filter disk ( 11 ) which is arranged closer to the radiation source ( 3 ) is in the form of a safety device such that it is more susceptible to breaking than the filter disk ( 12 ) which is further away from the radiation source.