Beam diaphragm and X-ray imaging apparatus
US7263171B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2005 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Nov 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
With a view to providing a beam diaphragm having a large maximum value of aperture opening under a limited profile dimension, the beam diaphragm comprises a pair of control rings having coaxial apertures for the passage of X-rays therethrough and being opposed to each other axially through a spacing and coaxially rotatable independently of each other, a blade positioned between the pair of control rings, and position adjusting means which, in accordance with a relative rotation of the pair of control rings, causes the blade to move toward or away from a common axis of the apertures so as to describe a sectorial plane whose radius increases or decreases continuously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.