Device for producing high resolution backscatter images
US11409019B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2021 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Apr 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/639
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An X-ray imaging apparatus comprises a digital X-ray detector housed in a radiation shielded enclosure with multiple pinhole apertures in the front panel of the housing. An X-ray source illuminates a target and X-rays are backscattered towards the X-ray imaging apparatus. The multiple pinhole apertures arranged in a pattern so that each pinhole generates a respective pinhole image on the X-ray detector. The size of each image is controlled by the thickness of the front panel and the width of the pinhole aperture (acting as optical stops), and the distance to the X-ray detector, and these values are selected to prevent overlap between any pair of pinhole images on the X-ray detector. An image processor is used to generate a synthetic combined image of the object form the multiple pinhole images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.