Quartz windows (λ/2) These Quartz Windows are in (Vitreosil or equivalent) and usable down in the UV. They have excellent chemical and radiation resistance, and are usable up to 1050°C. For deep UV applications UV Grade Fused Silica is also available, which is listed both coated and with a multiplayer AR-coating for 248-400nm.
Knight Optical > Windows > Quartz Window (Lambda/2) Only UK and EU customers are charged VAT at 17.5%, customers outside the EU and EU customers based outside the UK who have a valid EU VAT number will not be charged VAT Bulk Discounts! Where (B) appears next to a price below, bulk prices are available, click the (B) button to view! PDF Part No. Material Diameter (mm) Thickness (mm) Price Qty Buy WHQ1500 Quartz 15 3 £8.85 WHQ1600 Quartz 16 1.5 £8.85 WHQ2500 Quartz 25 3 £13.60 WHQ4000 Quartz 40 3 £21.50 Knight Optical > Windows > Quartz Window (Lambda/2)
Specification   Material: Quartz Glass (Vitreosil or equivalent) Material Data: (see materials section) Diameter Tolerance: +0.0 / -0.20 mm Length / width Tolerance: +0.0/-0.20 mm Thickness Tolernace: ±0.1mm Surface Quality: <40:20 Flatness: >λ/2 over 90% of diameter Parallelism <30 arcsec
Specific requirements We can manufacture Quartz windows to any size at short notice, so if your requirements are not listed please contact us by telephone / fax or email: stockrequirement@knightoptical.co.uk Options available   · Mounting (circles up to 50mm dia.)   · Other coatings   · Edging to smaller diameters See also UV-fused silica windows (λ/2) Sapphire windows (2.5 λ)