Intensifying screen for X-ray detector, X-ray detector, and X-ray inspection apparatus
US8693627B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 22, 2012 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | May 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K2004/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In an embodiment, an X-ray detector has a transmissive fluorescence generating portion, and a reflective fluorescence generating portion. The transmissive and reflective fluorescence generating portions have at least one of an intensifying screen having a phosphor layer that contains praseodymium-activated gadolinium oxysulfide phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 60% by volume or more, and an intensifying screen having a phosphor layer that contains europium-activated barium fluorochloride phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 45% by volume or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.