Filter for a radiation emitter and apparatus
US7110508B2 · kind B2 · utility
0Cited by
2References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2004 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Sep 9, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/502
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A filter plate having defects that may cause image artefacts is moved during an exposure. The movement distributes the defects of the plate in the image to a point where they can no longer be seen in the image. Preferably, the shifting of the plate is done in the plane of the plate, in a direction perpendicular to the axes of the rollers used for in the manufacture of the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.