Adjustable collimator and method
US6788764B2 · kind B2 · utility
23Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2001 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A collimator for X-ray apparatus has an aperture defined by the edges of four movable flexible shutters. Each shutter can be moved independently of the other shutters; thus, the position and the size of the aperture can be adjusted at will. The shutters are moved by winding them onto drums; each drum is driven by a stepping motor. Springs bias the shutters towards the closed position of the collimator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.