KrystalVision™ is a fully integrated
diameter measurement system for Kayex automated crystal growing
furnaces.
The front end consists of two CCD cameras
mounted on the furnace tank cover. A longer focal length lens
for neck mode provides enhanced resolution for superior diameter
control.
The system is impervious to the high magnetic
fields applied to furnaces with the MCZ process.
The camera image is routed to the control
computer where a specialized image processor and custom software
extract diameter information.
Highly specialized vision processing and
a high-level control integration provide many advantages over
add-on or less sophisticated systems.
KrystalVision
Overview
KrystalVision
System includes:
High resolution CCD camera
768 (H) X 493 (V) pixel array
Dual cameras - 6:1 lens ratio for
neck and body detection
High performance frame grabber board
provides image acquisition and analysis
Highly flexible software control
over sampling area, error rejection, and signal processing
techniques
On-screen display of crystal image
Automatic adjustment for varying
crystal diameters and melt levels
Neck diameter acquisition performed
15 time per second
