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These fire-polished aspheric lenses are glass lenses manufactured by a simple moulding process and polished by heating just enough to melt the surface and allow surface tension to smooth out defects. Usually these lenses have a very large diameter compared with the focal length. Fire polished aspheric lenses have large apertures so are ideal for light collecting applicatons such as condenser lenses in LED based projectors.  The second face of the plano-convex type is optically polished for improved quality.

Knight Optical stock a full range of both thermally toughened aspheric lenses and un-toughened fire polished aspheric lenses. For higher quality applications we also sell uncoated and AR coated precision aspherics available to purchase directly from this site.

Please contact our technical sales team for availability of one-off or bulk pricing.

Material:

Diameter:
Centration:
Surface Quality:
Focal Length:

B270 or equivalent
Borosilicate or equivalent
± 0.25
<30 arcmin
<80-50 scratch/dig
Nominal

Mounting options.
Stock lenses can be edged to smaller diameters.
Antireflective coatings on fire-polished aspheric lenses are available to designed wavelength.

27 Items

Name Form Focal Length (mm) Back Focal Length (mm) Diameter (mm) Centre Thickness (mm) Material Toughened Price Buy
LAF0607 Planoconvex 5.9 4 6.8 2.8 B270 Untoughened
$18.00
LAF0807 Planoconvex 7.5 8 4 N-BK7 or equivalent Untoughened
$18.00
LAF1308 Biconvex 8.0 12.7 7.5 B270 Untoughened
$18.00
LAF1008 Planoconvex 8.0 9.8 5.8 B270 Untoughened
$18.00
LAF0811 Planoconvex 8 10 5.8 B270 Untoughened
$18.00
LAF1210 Planoconvex 10.5 12.0 5.8 B270 Untoughened
$18.00
LAF1215 Planoconvex 12.0 15.0 8.0 B270 Untoughened
$18.00
LAF1014 Biconvex 13.0 10.0 6.0 B270 Untoughened
$18.00
LAF1413 Planoconvex 14.0 12.9 5.7 B270 Toughened
$18.00
LAF1815 Planoconvex 15.0 18.0 8.2 B270 Untoughened
$18.00
LAF1516 Planoconvex 15.0 16.0 6.0 B270 Untoughened
$18.00
LAF2516 Planoconvex 16.0 25.4 14.0 B270 Untoughened
$20.09
LAF1625 Planoconvex 16.5 24.8 9.2 B270 Untoughened
$21.48
LAF2018 Planoconvex 18.1 20.0 8.0 B270 Untoughened
$18.00
LAF1827 Planoconvex 18.5 27.4 14.2 B270 Untoughened
$20.09
LAF2520 Planoconvex 20.1 25.0 12.0 B270 Untoughened
$20.09
LAF2126 Planoconvex 21 17.4 26.3 10 B270 Toughened
$20.09
LAF2125 Biconvex 21.0 25.0 10.5 B270 Untoughened
$21.48
LAF2525 Planoconvex 25.0 25.0 8.5 B270 Untoughened
$20.09
LAF3026 Planoconvex 26.0 30.0 11.9 B270 Untoughened
$23.56
LAF5132 Spherical Convex 32 50.8 25 B270 Untoughened
$41.63
LAF3245 Planoconvex 32.0 45.0 18.5 B270 Untoughened
$41.63
LAF4532 Planoconvex 32.1 45.0 18.5 B270 Untoughened
$41.63
LAF4050 Planoconvex 40.0 50.0 21.0 B270 Untoughened
$41.63
LAF4040 Planoconvex 40.0 40 12.5 B270 Untoughened
$34.68
LAF5050 Planoconvex 49.5 50.0 13.0 B270 Untoughened
$41.63
LAF6075 Planoconvex 60.0 75.0 30.0 B270 Toughened
$52.47

27 Items

1

Fire Polished Aspheric Lenses

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