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Inspection of Glass Sheets

Quality assurance and process control have become more important than ever for the production of glass sheets. New high-tech processing steps for todays glass types, such as fire protection lamination or ITO/TCO coatings, can also boost the expenditure of production. Thus, an early reaction to deviations from quality and process standards can save enormous costs for material loss. Glass contamination's or defects in the glass can cause glass breakage at a later processing stage. Also, profound secondary costs such as downtime of production lines and even guarantee costs could greatly decrease yield and profit. 


Modular Concept for Tailor-Made Solutions

Dr. Schenk GlassInspect solution is a modular optical vision system capable of inspecting a wide range of panel sizes and types, including bare glass substrates, coated and laminated glass, structured and unstructured solar glass, OLED material and many more.

Based on a modular concept using high-resolution cameras and high performance LED illumination units GlassInspect can be optimized for various applications and inspection tasks within the production process. Defect classification software modules, each specifically tailored to the various production steps, help glass manufacturers to improve quality at a higher yield.

GlassInspect is available either fully integrated into automated production lines or as stand-alone systems with loading and unloading capability for batch and prototype production.


Focus of Inspection


Surface Inspection of Bare Glass Substrates

Bubbles, Inclusions (Stones, Knots), Platinum, Tin, Cullets, Glass Chips, Protrusions (Tokki), Particles, Scratches, Surface Spots, Stains, Streaks (Brush Lines, Cords), Water Marks, Broken Corners, Edge Chips, Edge Cracks

Coated and Laminated Glass

Coating Voids, Missing Coating, Pinholes, Coating-Burns/Arcs, Coating Scratches, Coating Splashes (Metal Spots), Peelings
Inclusions in Lamination Layers, Bubbles, Pinholes and Scratches

Structured Solar Glass

Bubbles (closed and open), Inclusions, Structure Irregularities

Glass Edge

Broken Corners, Edge Chips, Edge Cracks

Glass Sheet Geometry

Dimension (Width and Length), Geometrical Form, Rectangularity of Sheet Corners, Parallelism of Panel Sides, Warpage


Sample Defect Images of GlassInspect for Sheet Glass


Bubble
Inclusion
Glass Chip
Glass Chip
Metal Inclusion
Metal Inclusion
Platinum
Scratch

System Highlights

  • Unmatched cycle time
  • Superior defect sensitivity
  • Wide range of panel sizes and types
  • Innovative glass handling technology

The combined contribution of the proprietary technologies of pattern compensation, measurement modules and modular system design maximizes the inspection performance of the GlassInspect system in order to best serve the needs of the glass sheet manufacturer.


Optional Measurement Channels

Thickness Measurement

  • White Light Spectrometer Modules
  • Laser Interferometer Modules

Warpage Measurement

  • High Precision Triangulation Sensors

Color Measurement

  • Spectrometer Modules
  • Single Sensor Modules