Glass Inspection

Glass for windows is produced in a giant crucible and flows in a continuous strip until it cools sufficiently to be cut into large sheets.

To test the quality of the glass, the sheet is scanned with a light spot prior to cutting

An array of photomultiplier modules collects the light and detects any bubbles or flaws in the glass, allowing each sheet to be graded.

Examples of Analogue Modules


Effective cathode dia. mm

Cathode type

Spectral response range nm

Amplifier bandwidth MHz

Outline drawing

Data Sheet




300 to 850





300 to 850


* can be used for pulse counting, analogue detection or photon counting

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