Glass aspheric condenser lenses - Fire-polished grade Aspheric lenses reduce aberrations and therefore perform better when used for low f-number, high efficiency illumination applications. These aspheric lenses are thermally toughened to withstand high temperatures and are therefore usually used to collimate light from a lamp or similar source such as in projection and other illumination applications. Aspheric lenses have large apertures that allow efficient collection. The aspheric surface moulded and fire-polished steep curved, the second surface that faces the source, is ground and polished. These aspheric lenses are uncoated.
Knight Optical > Lenses > Glass aspheric condenser -Fire-polished 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 Part No. Focal length (mm) Material Diameter (mm) Back focal length (mm) Centre thickness (mm) Form Price Qty Buy LAF0607 5.9 B270 6.8 4 2.8 Planoconvex type   £10.00 LAF0810 7.8 B270 9.9 5.1 4.1 Planoconvex type   £10.00 LAF1012 10.5 B270 12 7.6 5.2 Biconvex type   £10.00 LAF1413 14 B270 12.97 10.2 5.7 Planoconvex type   £9.00 LAF1516 15 B270 16 11.1 6 Planoconvex type   £9.00 LAF1625 16.5 B270 24.8 10.5 9.2 Planoconvex type   £10.75 LAF1827 18.5 B270 27.4 9.2 14.2 Planoconvex type   £12.50 LAF3540 34.9 B270 39.8 20.6 19.5 Meniscus type   £14.95 LAF3950 39 B270 50 26.2 19.5 Planoconvex type   £16.75 LAF5573 55 B270 73 34.3 31.5 Planoconvex type   £32.00 Knight Optical > Lenses > Glass aspheric condenser -Fire-polished grade
Specification   Material: B270 Material Data: (see materials section) Diameter: ± 0.2 Focal Length: Nominal Surface Quality: <80-50 scratch/dig (see quality section)
Specific requirements We can source Glass Aspheric Condenser lenses to most sizes 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 Options available   · Mounting (some lenses only)   · AR coating (single-layer only)   · Stock lenses can be edged to smaller diameters See also Lamphouses: Tungsten-halogen Lamphouses & LED Lamphouses