Radiation modulation in a security examination apparatus
US9121957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2008 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Oct 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/226
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Radiation flux can be adjusted “on the fly” as an object (204) is being scanned in a security examination apparatus. Adjustments are made to the radiation flux based upon radiation incident on a first radiation detector (226) in an upstream portion (233) of an examination region. The object under examination is thus exposed to different radiation flux in coordination with a downstream motion (235) of the object relative to a second radiation detector (228). The radiation flux is adjusted so that a sufficient number of x-rays (that traverse the object) are incident on the second radiation detector. Images of the object can then be generated based upon data from the second radiation detector, where these images are thus of a desired/higher quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.