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All our Optolite™ filter windows are subject to our detailed Quality Assurance procedure which involves 100% visual inspection of all lenses before dispatch. Each lens, when passed by inspection, is laminated with a protection film on both front and rear surfaces to give protection during transfer and from accidental damage during assembly.

All our Optolite™ filter windows are assessed for the following:
• Scratches
• Inclusions
• Dimensions (to specified tolerances)
• Mesh angle

All windows are inspected at a distance of approximately 450mm in front of a white and black background under fluorescent tube lighting.

The robust nature of the filter window combined with our Quality Assurance programme, reduces to an absolute minimum any wastage from damage and so saves on cost.

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