Large condenser lenses - Quality grade These planoconvex condenser lenses are optically polished with moulded edges. Except for the B270 lens, all the condenser lenses are in low-expansion borosilicate glass and have excellent thermal shock resistance. Borosilicate material contains some striae and bubbles, but these are not normally an issue for condenser applications.
Knight Optical > Lenses > Condenser lenses - LARGE Quality grade 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) Centre thickness (mm) Edge thickness (mm) Price Qty Buy LSQ250114 250 BK7 114 18.2 5 £85.00 LSQ250150 250 BK7 150 30 6 £85.00 LSQ350150 350 BK7 150 24 8.5 £85.00 LSQ500150 500 BK7 150 17.5 6.5 £85.00 LSQ500250 500 BK7 250 30 8 £145.00 Knight Optical > Lenses > Condenser lenses - LARGE Quality grade
Specification   Material: Suprax, B270  Material Data: (see materials section)  Diameter:   Focal Length (@587nm): ± 5%  Refractive Index (nd): Suprax 1.483, B270 1.523  Surface Quality: <60-40 scratch/dig (see quality section)
Specific requirements We can manufacture Planoconvex Lens 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 Planoconvex lenses with suffix "AV2" are coated on both faces with (Extended broad band multilayer antireflective coating <0.5%@450-900nm (see coatings section) Options available   · Mounting (all items)   · Stock lenses can be edged to smaller diameters See also Smaller planovex lenses: Commercial convex lenses & Quality convex lenses Aspheric condensers: Glass aspheric condensers Fresnel lenses: Fresnel lenses

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