Fused silica right-angle Prisms (Precision grade) These Fused Silica Right Angle Prisms are typically used for turning a beam by 90º. Uncoated Right-angle Prisms give total internal reflection of up to 100%, up to a critical angle, corresponding to 2.5º externally for Fused Silica (@587nm) Right-angle Prisms can also be used as an internal or front surface mirror when the hypotenuse is mirror coated, however it is important that it is kept clean. These Fused Silica Right-angle Prisms are available in precision grade. Fused silica is useful for wavelengths down to 170nm and for high temperatures. The Protected ranges have the hypotenuse aluminised and black painted for protection (R=85% typically).

Knight Optical > Prisms > Right-angle prisms (UV fused silica) - Precision Uncoated This is the section containing Uncoated. 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! Knight Optical > Prisms > Right-angle prisms (UV fused silica) - Precision

Specification   Material: UV fused silica Material data: (see materials section) Dimensions: ±0.1mm (4mm) Angles: ±1 arcmin Surface quality: <40:20 Flatness: <λ/4 over 25mm (over inscribed eclipse) Coating:   Protected type: Protected aluminium / Visible use (see MV02 coating spec)

Specific requirements We can manufacture Right angle prisms 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 Stock Prisms can be machined to your required size at short notice, please ask for a quote: stockrequirement@knightoptical.co.uk See also Porro prisms (inverting prisms section)