Plane Mirrors Mirrors are used to fold or bend the optical path in a system. Before selecting a mirror the application must be considered, thermal and mechanical stability as well as flatness   are important in selection.  We supply a range of mirrors covering a range from UV-Visible-IR applications and surface specifications. These Plane Mirrors are offered in two grades either as General-purpose Grade or with guaranteed flatness of 1 λ over 25mm. General-purpose Grade Mirrors are generally on float glass substrates have a wide variety of usages. 1.1mm thick mirrors are useful for their low inertia in scanning systems whilst 3mm and 6mm thick mirrors have better flatness and are useful for camera, microscope or projector systems and illumination and sensing applications. Plane 1 λ over 25mm Mirrors are available in a wide range of sizes at very reasonable prices, made possible by bulk preparation of the material.

Knight Optical > Mirrors > Plane mirrors > General-purpose grade All-dielectric 99% (Visible applications) This is the section containing All-dielectric 99% (Visible applications). Aluminium/MgF² (UV applications) This is the section containing Aluminium/MgF² (UV applications). Enhanced aluminium (Visible applications) This is the section containing Enhanced aluminium (Visible applications). Ion-plated silver (Visible & IR applications) This is the section containing Ion-plated silver (Visible & IR applications). All-dielectric 98% (IR applications) This is the section containing All-dielectric 98% (IR applications). Protected gold (IR applications) This is the section containing Protected gold (IR applications). 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 Knight Optical > Mirrors > Plane mirrors > General-purpose grade

Specification for general-purpose grade Material: Soda lime float glass Material data: (see materials section) Diameter: +0/-0.25 mm Length/width: ±0.2mm Thickness: ±0.25mm Surface quality: <60:40 Flatness (typical):     1.1mmthk 1λ over 10mm dia.   3/6mmthk 2λ over 25mm dia. Parallelism: <1 arcmin Coating: UV aliminum / Al+MgF² / UV use (see MU01 coating spec) Enhanced aluminium / Visible use (see MV01 coating spec) Protected aluminium / Visible use (see MV02 coating spec) All-dielectric 99% / Visible use (see MV006 coating spec) Ion-plated silver / Visible&IR use (see MV03 coating spec) All-dielectric 98% / IR use (see MI06 coating spec) Protected gold / IR use (see MI01 coating spec)

Note Squares & Rectangles have clean cut and chamfered edges. Diameters have fine ground and chamfered edges Specific requirements We can manufacture Plane Mirrors 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)   · Cutting down or edged to special sizes   · Other sizes available at short notice See also Plane mirrors 1λ over 25mm, Precision plane mirrors