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Understand visible wave, bending and local deformation effects that influence glass appearance and inspection consistency.
Optical distortion refers to the way glass changes the apparent shape, position or reflection of objects viewed through or reflected by the glass. In production, this may appear as wave, bending, local deformation, irregular reflection or movement in a zebra pattern.
Even when glass meets basic dimensional requirements, optical distortion can still affect visual appearance and customer acceptance.
Optical distortion affects how glass performs visually in real applications. In architectural glass, it can cause reflected buildings, lines or objects to appear bent or unstable.
In processed glass, distortion may become more visible after tempering, coating or lamination.
For manufacturers, distortion is also useful as a quality signal.
Changes in distortion can reflect process variation, forming conditions, thermal behaviour or handling-related effects.
Optical distortion is often first detected visually. Operators may use zebra boards, reflected lines or transmitted patterns to judge whether the glass is acceptable. However, visual inspection is affected by viewing position, lighting, glass placement, operator experience and judgement threshold.
This makes consistent evaluation difficult when results need to be compared across shifts, factories or customer samples.
LUARI FZT-2 supports optical distortion evaluation through automated zebra pattern analysis.
The system helps reduce reliance on subjective visual judgement and creates structured measurement records that can be used for comparison, review and quality documentation.
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