Automated inspection system uses eight image heads
Imaging Solutions
Optical inspection system
Imaging Solutions Group (ISG) has worked with a flat-panel display manufacturer to implement an automated optical inspection system (AOI) using the ISG Octopus eight-headed camera system.
The system makes use of eight Aptina (Micron) five megapixel image heads for a total unified image size of 40 megapixels in a 2 x 4 matrix.
This aspect ratio is ideal for widescreen TV LCD displays.
The eight heads are aggregated into a single unified image and can operate at up to 12 frames per second at full 40Mp resolution for high-speed AOI.
The next-generation system will use eight Aptina 10Mp sensors for a total unified image of 80Mp running at up to 15fps.
Inspection algorithms embedded inside the camera system are processed with a high-performance Linux CPU and a large FPGA.
External triggering and strobe functions are integrated along with external I/O for inspection outputs.
Currently the setup uses a GigE network interface and individual 1394b (800) interfaces for transmitting images and meta-data to host PC and storage systems.
Cost savings and increased AOI inspection times increase flat panel inspection throughput and cost efficiency.
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