Patent ID: 7286640

Claim:
An x-ray detector comprising: a first detector system comprising a first scintillator for converting x-rays from a sample into a first optical signal, having a thickness of 50 to 300 micrometers, and a first optical detector for detecting the first optical signal, the first detector system further comprising: a first mirror for directing the first optical signal out of a path of the X-rays and to the first optical detector, and a first optical imaging system for imaging the first optical signal onto the first optical detector; and a second detector system comprising a second scintillator, which is thicker than the first scintillator, for converting x-rays from the sample, which have passed through the first scintillator and the first mirror but not the first optical detector, into a second optical signal, and a second optical detector for detecting the second optical signal, the second detector system further comprising: a second mirror for directing the second optical signal out of a path of the X-rays and to the second optical detector, and a second optical imaging system for imaging the second optical signal onto the second optical detector.