Dage has developed a computerized tomography (CT) option for its XiDAT XD7600NT digital x-ray inspection system.  The CT option further refines performance with volumetric reconstruction of solder joints. 
 
CT is an imaging method employing tomography whereby digital geometric processing is used to generate a 3-D image model of an object from a large series of individual 2-D x-ray images, or slices, taken about a single axis of rotation.
 
The CT capability is available as an option with new systems and is suited for analytical analysis of interconnections for critical applications such as stacked die, MEMS, package-in-package and package-on-package. Equipped with this option, the system can quickly and easily convert between 2-D and 3-D modes for different inspection applications, is capable of ultra fast image reconstruction and can reconstructing up to 1,440 image slices.
 
When operating in 3-D mode, the sample is rotated in the x-ray beam and multiple 2-D digital images are captured. These 2-D images are fed in real-time to a dedicated reconstruction server where a 3-D model is available for viewing. 
 
The reconstruction server can generate 3-D volumes of 256³, 512³ and 1,024³ using a Feldkamp cone beam reconstruction algorithm with either full or sub-volume reconstruction, with all calculations being carried out by 16 dedicated processing units running in parallel.
 
The reconstructed 3-D image model can be viewed online or off-line with dedicated image hardware allowing real-time manipulation of 3-D models.  Image display features include:
Image Manipulation – rotate, pan and zoom
Clip Image – to eliminate unwanted detail
Volume Rendering – for creation of solid surfaces and maximum intensity, and to vary the opacity and color of volumes
Slices – multiple cross section at any orientation and the ability to vary the opacity and color of individual slices
Illumination Models – single light source or two light sources with shadow computation for optimal 3D perception
Image Save – saving 2D images in JPG or TIF formats
 
Dage Precision Industries, dageinc.com