Radiation apparatus
US5898530A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1995 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Apr 19, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/0667
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A radiation apparatus comprising a radiation source and a filter arranged in an optical path, said filter comprising two transparent filter discs which are arranged substantially in plane-parallel fashion relative to each other and which are held with their surrounding edges in a frame made of a material of good heat conduction, the filter discs and the frame defining a closed cavity which has provided therein a medium for selectively influencing the radiation spectrum. The frame is divided substantially in a direction transverse to the filter axis into first and second frame halves in such a manner that the one filter disc is arranged on the first frame half at the side facing the cavity and the other filter disc is arranged on the second frame half at the side facing the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.