USER
M
ANUAL
www.vareximaging.com
11
2315NDT v2 CMOS X-ray Detector User Manual
13.1
Detector Functions
The detector performs the following functions within a typical X-ray system:
•
Converts incident X-ray into a digitized image
•
Transmits the image to a remote host as a serialized data stream
•
Controls basic image adjustments, such as offset and linearity
13.2
Embedded Features
Varex Imaging CMOS flat panel X-ray detectors are designed to provide several functions:
•
Selectable binning: 1×1, 2×2 and 4×4
•
Two sensitivity settings optimized for high sensitivity (real-time imaging) or high dynamic
range (static imaging)
•
Temperature sensor
These functions provide a great deal of flexibility when undertaking X-ray imaging tasks. The
detector is designed such that the balance between image resolution, sensitivity, and readout
speed can be controlled on a frame-by-frame basis.
13.3
Detector Design
Varex Imaging CMOS detectors use CMOS image sensors. The 2315NDT uses a sensor with
74.8
µm pixel pitch.
The 2 sensors are tiled, the gap between active pixels across the butting gap is one pixel wide
(74.8
μ
m). The corresponding missing row or column may be recreated using software, to
improve image presentation.
The CMOS sensor operates with switchable pixel capacitance (“well size”) and is optically
coupled to a scintillator plate, which converts X-ray photons into photons in the visible spectrum.
The coupling is facilitated using a Fiber Optic Plate (FOP), which is used to shield significant
amounts of X-rays from the sensor that could otherwise generate image noise and could cause
degradation to the imaging sensor.
WARNING
The SCap software provided by Varex Imaging is intended to be used
for integration, test, or research purposes only.
Model
Sensor Unit
Tiling
2315NDT
3072 columns × 1944 rows
2 × 1
