Far field imaging
US4264824A · kind A · utility
3Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1979 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Nov 16, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/025
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Distant radiation sources are imaged using a collimator having a multiplicity of portions, the transmissivities of the portions to radiation reaching the collimator from a given source being different from portion-to-portion for a given orientation of the collimator, regardless of the distance of the source from the collimator; these transmissivities are varied over time, and radiation passing through each portion is detected for successive values of its transmissivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.