Laminate radiation collimator
US4288697A · kind A · utility
Inventor
Key dates
| Filing date | May 3, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | May 3, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A collimator (21, 38, 38A) transmits intercepted X rays or the like along an array of predetermined spaced apart paths (22, 22A), which may be parallel or convergent, while absorbing intercepted radiation which is traveling in other directions. A laminated construction of the collimator provides for an extremely large number of very minute and closely spaced radiation passages (42, 42A) which may have a noncircular cross section to increase transmissivity. The laminated construction also reduces the amount of heavy and sometimes costly radiation absorbent material required in the collimator, enables precise control of the transmitted radiation paths and facilitates the establishing of a desired focal point for the paths. Photoetching techniques, including optical image reduction, are used in the manufacture of the collimator laminations. In some variations of the method, the radiation absorbent material is plated onto the laminations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.