Concave mirrors-Quality grade Concave Spherical Mirrors are used for focusing a beam of light in an optical system, therefore replacing a lens where a folded path is necessary. Compared to lenses, spherical mirrors have the advantages of perfect achromatism, considerably lower spherical aberration (see spherical aberration) and wide wavelength coverage.

Knight Optical > Mirrors > Concave mirrors-Quality grade > 40 diameter (mm) 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. Focal length (mm) Coating Radius of curvature (mm) Price Qty Buy MCQ2540 25 Ali/SiOx (visible R:80-90%) 50 £20.35 MCQ4040 40 Ali/SiOx (visible R:80-90%) 80 £20.35 MCQ5040 50 Ali/SiOx (visible R:80-90%) 100 £20.35 MCQ6540 65 Ali/SiOx (visible R:80-90%) 130 £20.35 MCQ7540 75 Ali/SiOx (visible R:80-90%) 150 £20.35 MCQ10040 100 Ali/SiOx (visible R:80-90%) 200 £20.35 MCQ15040 150 Ali/SiOx (visible R:80-90%) 300 £20.35 MCQ17540 175 Ali/SiOx (visible R:80-90%) 350 £20.35 Knight Optical > Mirrors > Concave mirrors-Quality grade > 40 diameter (mm)

Specification   Material: Float glass (White) Material data: (see materials section) Diameter: +0 / -0.2 mm Focal Length : ±2% Coating: Protected aluminium / Visible use (see MV02 coating spec)

Specific requirements We can manufacture these Concave 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 Alternative items available Mirror coatings (see coatings section) can easily be applied to lenses (see lens section) to form convex or concave mirrors.