Meniscus cylindrical lenses These ophthalmic meniscus lenses provide a wide range of longer focal lengths at low cost. The 60mm lenses have moulded edges whilst the 25mm are edged and centred. Each lens has one spherical and one toroidal surface, giving zero power in one cross-section and positive or negative power in the orthogonal section. The overall effect is that a conventional cylindrical lens.
Knight Optical > Lenses > Cylindrical lenses - Meniscus Type > Circular-negative type > 25 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) Back focal length (mm) Back vertex power (diopter) Length (mm) Width (mm) Price Qty Buy LMD20025 201 200 5 50 45 £29.99 LMD25025 252 250 4 50 50 £25.89 LMD40025 403 400 2.5 50 50 £25.89 LMD50025 503 500 2 50 50 £24.79 LMD66725 671 667 1.5 50 45 £24.79 LMD100025 1007 100 1 45 40 £24.79 LMD133325 1342 1333 0.75 22 40 £24.79 LMD200025 2013 2000 0.5 50 50 £24.79 LMD400025 4026 4000 0.25 50 45 £24.79 Knight Optical > Lenses > Cylindrical lenses - Meniscus Type > Circular-negative type > 25 diameter (mm)
Specification   Material: B270  Material Data: (see materials section)  Back vertex power: (=1/Back FL) ± 0.06D (< 4D) ± 0.12D (> 4D)  Diameter: +0.0 / -0.25mm (25mm) ± 1mm (60mm)  Surface Quality: 60-40
Specific requirements We can manufacture Meniscus Cylindrical Lenses 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 (25mm only)   · AR Coating   · Stock lenses can be edged to smaller diameters

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