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Within medicine the use of polarized light was first introduced back in the70’s - Within medicine the use of polarised light was first introduced back in the70’s; since then it has come leaps and bounds. How it has been used to help with imaging skin pathologies, when the skin is illuminated by linearly polarised light it causes backscattering of the superficial layers of the skin where cancer often arises. This superficial backscattered light can be distinguished from the diffused reflected light when using a detector. Polarised Beam-Splitter Cubes, Sheet Linear Polarisers, and Sheet Circular Polarisers are often used within detection devices for this type of skin pathology imaging. Knight Optical hold a large inventory of Polarisers for use within Skin Cancer Detection devices. •We stock large sheets up to 1270x480mm in some cases; we can cut these into special shapes at short notice. •Mounting options are also available. •Special Glass laminating to CAB polarisers •Special AR coatings. Read PDF for more information Material::N-BK7 or Equivalent Diameter Tolerance::+0.0/-0.25mm Length/Width Tolerance::±0.5mm (<100mm) ±1mm (100-400mm), nominal (>400mm) Axis direction: :±2° Material::N-BK7 or Equivalent; UV Grade Fused Silica Dimension Tolerances: :+0, -0.02mm Flatness::<λ/4 over CA Surface quality::<40/20 Scratch/Dig Angles::+/-1 arcmin Coatings::Visible and NIR Coating options available; P-Polarisation Transmission >90% S-Polarisation Reflectio