Technology Machinery
Optical solar glass inspection from Isra Vision

The new Patternscan offers a 100 per cent-optical, in-line inspection of solar glass. Patternscan-Ribbon inspects uncut pattern glass, Patternscan-Sheet performs inspection of pattern glass sheets. Both systems apply the innovative multi-mode and multi-view lighting technologies developed by Isra Vision. Multi-View indicates a variety of possible positions of lights on the camera bank. Multi-Mode is the term for different lighting modes. Combined, these technologies enable recognition and differentiation of all defects in the glass, on the glass and along the glass edges, as well as in the glass coating.

The new Patternscan offers a 100 per cent-optical, in-line inspection of
solar glass. Patternscan-Ribbon inspects uncut pattern glass,
Patternscan-Sheet performs inspection of pattern glass sheets. Both
systems apply the innovative multi-mode and multi-view lighting
technologies developed by Isra Vision. Multi-View indicates a variety of
possible positions of lights on the camera bank. Multi-Mode is the term
for different lighting modes. Combined, these technologies enable
recognition and differentiation of all defects in the glass, on the
glass and along the glass edges, as well as in the glass coating.

Through the advancement and development of the software
platform, both Patternscan systems guarantee the highest quality of pattern
glass according to market standards in the photovoltaic industry. The
differentiation between defects, including open and closed bubbles, as
well as the smallest defects and scratches (independent of their
orientation) is one of the standard features of the modular kit. In
short, defects previously classified as invisible and undistinguishable
can now be detected and classified with the help of Patternscan.

A theoretically unlimited number of different views can be simultaneously generated with just one camera or camera bank.

The patented unit is made up of extremely fast, individually switchable
LED’s, which are being used together in this form for the first time. A
theoretically unlimited number of different views can be simultaneously
generated with just one camera or camera bank. This technology enables a
so far unreached inspection performance regarding defect detection and
classification.
 
The inspection software uses the collected defect data from the
individual views, which are provided in real time, for complete,
reliable defect classification. Based on this defect classification, cut
optimization is possible in a way which will significantly increase
yields across the whole production line and saves material. The user
profits from the results with an enormous increase in performance, and
at the same time, a significant reduction in the necessary hardware. The
low operating costs of Patternscan-Ribbon and Patternscan-Sheet systems
provide increased profitability and optimization of processes. The
system therefore closes what had been a significant gap between the
technical requirements for inspection and short ROI times for such
systems.

Related links
Isra Vision