Meniscus laser lenses A high-index meniscus laser lens can be added to a focusing lens to increase its power and relative aperture with very little extra spherical aberration or coma. Those listed here are designed to be used with another lens of the same focal length (with collimated input) such as the High-index planoconvex laser lenses or the doublets the power and numerical aperture of the lens are then doubled. High-index meniscus laser lenses are available with and without AR coating.
Knight Optical > Lenses > Meniscus lenses - Laser Type > 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! PDF Part No. Focal length (mm) Material Diameter (mm) Back focal length (mm) Centre thickness (mm) Edge thickness (mm) Radius of curvature (mm) Price Qty Buy LML1004 10 SF11 4 8.3 1.2 1 316/4.40 £22.49 LML1606 16 SF11 6.3 13.3 1.9 1.5 5.05/7.04 £22.49 LML2510 25 SF11 10 22.2 2.1 1.5 8.25/12.63 £22.49 LML4016 40 SF11 16 36.6 2.6 1.5 13.6/21.97 £22.49 Knight Optical > Lenses > Meniscus lenses - Laser Type > Uncoated
Specification   Material: SF11 (See spherical aberration calculation section)  Material Data: (see materials section)  Diameter: +0.0 / -0.10mm  Centring Accuracy: < 0.05mm (F.L 25mm) < 1.5mrad (F.L > 25mm)  Centre Thickness: ± 0.15mm Focal Length (@587nm): ± 2% (>10mm)  Figure (sphericity): λ/4  Surface Quality: <40-20 scratch/dig (see quality section)
Specific requirements We can manufacture Meniscus Laser Lenses to any size or focal length at short notice, so if your requirements are not listed please contact us by telephone/ fax or email: stockrequirement@knightoptical.co.uk Coating Meniscus Laser Lenses are coated on both faces with (***ASK**** ROB**) (see coatings section) Options available   · Mounting (all items)   · Special AR coating (see coatings section)   · Stock lenses can be edged to smaller diameters See also Crown-glass meniscus lenses: Crown-glass meniscus lenses