Attenuation zone plate
US4481419A · kind A · utility
12Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1981 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Oct 29, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/295
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An attenuation zone plate for coded-aperture imaging of a radiation source has mercury contained within a wedge-shaped chamber in a plastic housing. Reservoir and relief cavities facilitate filling the housing with mercury and accommodate changes in mercury volume. Lead plates positioned on the perimeter of the housing provide a field of view mask. In one embodiment, the housing cover pivots to vary the wedge angle. Advantages include greater facility in precision manufacturing and greater attenuation pattern flexibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.