Far field imaging
US4278891A · kind A · utility
2Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1978 |
| Grant date | Jul 14, 1981 |
| Priority date | — |
| Expiry date | Nov 17, 1998 |
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; 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.