Compare Model Drawings, CAD & Specs Lens Shape Antireflection Coating Diameter1 Effective Focal Length (EFL) Numerical Aperture Availability Price
KGA080-A-MT
$154
KGA080-A-MT Bi-Convex Aspheric 350-700 nm 6.35 mm 3.89 mm 0.55 $154
KGA080-B-MT
$154
KGA080-B-MT Bi-Convex Aspheric 600-1050 nm 6.35 mm 3.89 mm 0.55 $154
KGA110-A-MT
$154
KGA110-A-MT Plano-Convex Aspheric 350-700 nm 7.2 mm 6.24 mm 0.4 $154
KGA110-B-MT
$154
KGA110-B-MT Plano-Convex Aspheric 600-1050 nm 7.2 mm 6.24 mm 0.4 $154
KGA220-A-MT
$139
KGA220-A-MT Plano-Convex Aspheric 350-700 nm 7.2 mm 11.0 mm 0.25 $139
KGA220-B-MT
$139
KGA220-B-MT Plano-Convex Aspheric 600-1050 nm 7.2 mm 11.0 mm 0.25 $139
KGA230-A-MT
$139
KGA230-A-MT Plano-Convex Aspheric 350-700 nm 6.35 mm 4.51 mm 0.55 $139
KGA230-B-MT
$139
KGA230-B-MT Plano-Convex Aspheric 600-1050 nm 6.35 mm 4.51 mm 0.55 $139
KGA240-A-MT
$139
KGA240-A-MT Plano-Convex Aspheric 350-700 nm 9.9 mm 8.0 mm 0.5 $139
KGA240-B-MT
$154
KGA240-B-MT Plano-Convex Aspheric 600-1050 nm 9.9 mm 8.0 mm 0.5 $154
KGA260-A-MT
$139
KGA260-A-MT Plano-Convex Aspheric 350-700 nm 6.5 mm 15.29 mm 0.16 $139
KGA260-B-MT
$139
KGA260-B-MT Plano-Convex Aspheric 600-1050 nm 6.5 mm 15.29 mm 0.16 $139
KGA280-A-MT
$139
KGA280-A-MT Plano-Convex Aspheric 350-700 nm 6.5 mm 18.4 mm 0.15 $139
KGA280-B-MT
$139
KGA280-B-MT Plano-Convex Aspheric 600-1050 nm 6.5 mm 18.4 mm 0.15 $139
KGA330-A-MT
$139
KGA330-A-MT Bi-Convex Aspheric 350-700 nm 6.35 mm 3.10 mm 0.68 $139
KGA330-B-MT
$139
KGA330-B-MT Bi-Convex Aspheric 600-1050 nm 6.35 mm 3.10 mm 0.68 $139
KGA340-A-MT
$139
KGA340-A-MT Bi-Convex Aspheric 350-700 nm 6.35 mm 4.03 mm 0.64 $139
KGA340-B-MT
$139
KGA340-B-MT Bi-Convex Aspheric 600-1050 nm 6.35 mm 4.03 mm 0.64 $139
KGA560-A-MT
$139
KGA560-A-MT Plano-Convex Aspheric 350-700 nm 6.35 mm 13.86 mm 0.18 $139
KGA560-B-MT
$139
KGA560-B-MT Plano-Convex Aspheric 600-1050 nm 6.35 mm 13.86 mm 0.18 $139
KGA671-A-MT
$232
KGA671-A-MT Plano-Convex Aspheric 350-700 nm 6.35 mm 4.00 mm 0.6 $232
KGA671-B-MT
$232
KGA671-B-MT Plano-Convex Aspheric 600-1050 nm 6.35 mm 4.00 mm 0.6 $232

Specifications

Features

Advantage of Aspheric Lenses

In applications that require large acceptance angles, such as light gathering for illumination, spherical lenses are unsuitable due to spherical aberration, or the effect of refractive power of a spherical surface becoming greater with increasing aperture. Aspheric lenses maintain constant focal length or very high NA, avoiding the need for multiple elements to correct spherical aberration. This simplifies system design by reducing weight and component count. It also results in less transmission loss, and less ghosting due to having fewer surfaces. The primary drawback of aspheric lenses is off-axis performance is poor. This is not a problem for coupling to and from optical fibers or collimating light sources, but aspheric lenses are not usable over a wide field of view.

Molded Glass Aspheric Construction

These Geltech lenses are made from Corning C0550 glass, which features low dispersion (Vd=50.40). Typical applications include fiber coupling, laser diodes, medical lasers, optical data storage, and barcode scanners. The lenses are available in both unmounted and mounted versions.

Stainless Steel Mounted Version

These mounted Geltech lenses feature a stainless steel 304 holder with a threaded exterior, M9x0.5 or M12x0.5. The numerical aperture is the same as the corresponding unmounted lens, but the working distance is slightly different. Aspherical Lens Adapters UPA1-AS9 and UPA1-AS12 are available to mount them into standard 1 in. optical mounts.

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