Coil arrangement for producing a homogeneous magnetic field
US4644281A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1984 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | May 14, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a coil arrangement for producing a homogeneous magnetic field especially for application to so-called NMR-imaging. An object of the invention is in terms of the size of a coil arrangement to expand the homogeneous area produced by a coil arrangement and, at the same time, to maintain the design of a coil arrangement simple and its manufacturing costs low. According to the invention, a coil arrangement includes three solenoids having a common axis, of which the axial winding width (W1) of the middlemost solenoid (1) is 2.75 . . . 2.95, preferably 2.835 . . . 2.855 times the mean radius (r1) of the middlemost solenoid (1) and the mean radius (r2) of the outermost solenoids (2) is 1.05 . . . 1.07, preferably 1.055 . . . 1.061 times the mean radius (r1) of the middlemost solenoid (1) and the axial winding width (W2) thereof is 0.32 . . . 0.38, preferably 0.340 . . . 0.342 times the mean radius (r1) of the middlemost solenoid (1). In addition, the distance (Z 1) from the center point of the outermost solenoids (2) to the center point of the middlemost solenoid (1) is 1.80 . . . 1.95, preferably 1.858 . . . 1.868 times the mean radius (r1) of the middlemost solen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.