Pilkington, and on production lines where particularly complex measurement systems or more stringent end uses are involved, the costs can be significantly higher. ‘We invest in the equipment because of the fundamental requirements of our customer or as a tool for process control,’ he commented. ‘By detecting defects at the point of creation, we can more quickly address the cause and prevent the defects from passing to the next stage of our process. As an example, detecting defects or contamination of the inner and outer shaped glass plies of a windscreen before lamination is highly desirable, as the cost of the plastic interlayer we add at that stage of the process can be more than half of the final windscreen production cost.’ Tese cumulative costs and challenges
have also led to the adoption of different business models by the companies developing the optical inspection equipment. Stelzl of MSTVision has positioned his Germany-based company as a solutions provider, rather than a hardware developer. ‘We are not primarily system vendors,’
explained Stelzl. ‘Instead, we sell development services, bringing technical know-how to the table. Tis means we work
with both software and hardware, as well as with broader industrial aspects, such as the development of agreed standards for optical inspection.’ MSTVision has developed a time-domain
multiplexing product named MultiChannel, which allows images to be captured from multiple lighting setups in one pass with a monochrome line scan camera. But rather than using bespoke optical components, the company’s platform can employ off-the-shelf line scan cameras, LEDs and frame grabbers running on standard computer software. Tis is a reflection of the ultimate driver
today for all glass producers, according to Stelzl: downward pressure on costs and a wish for the inspection systems to become less expensive. ‘Ten years ago, the demand was
centred on increasing image resolution and achieving faster speeds, and then subsequently on the development of increasingly complex algorithms for the classification of defects,’ he said. ‘But since the inspection speeds are now
fast enough to satisfy most applications, even the more demanding ones, the current impetus is for prices to come down and for cheaper inspection systems to become available.’ O
C M Y CM MY CY CMY K
25 Megapixel 10GigE Camera
VC-25M10G
10GigE Interface
25 Megapixel Resolution Up to 41.7 fps Supports PoE+
For FPD, PCB, Semiconductor Inspection
Defect scanners have to handle large sheets of glass
www.imveurope.com | @imveurope
vision.vieworks.com |
vision@vieworks.com
Isra Vision
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