Precision Polished Aspheric Lenses

Our uncoated precision polished aspheric lenses are computer-optimized to achieve diffraction limited optical performance over high numerical apertures without requiring multiple elements. This may be used to reduce weight, complexity and cost for optical systems.

Uncoated L-BAL 35 (589/611) substrates
Computer optimized to provide diffraction limited performance
Low f-numbers for optimal light gathering and focusing
Reduces spherical aberrations

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Description	Compatibility	Price
KPA10 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 22.5 mm EFL, Uncoated	UNIVERSAL	$354
KPA11 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 18.75 mm EFL, Uncoated	UNIVERSAL	$354
KPA12 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 15.0 mm EFL, Uncoated	UNIVERSAL	$366
KPA13 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Plano-Convex, L-BAL35, 15.00 mm, 11.25 mm EFL, Uncoated	UNIVERSAL	$374
KPA14 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Bi-Convex, L-BAL35, 20 mm, 20.0 mm EFL, Uncoated	UNIVERSAL	$397
KPA15 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Bi-Convex, L-BAL35, 20 mm, 15.0 mm EFL, Uncoated	UNIVERSAL	$419
KPA16 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 37.5 mm EFL, Uncoated	UNIVERSAL	$403
KPA17 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 31.25 mm EFL, Uncoated	UNIVERSAL	$405
KPA18 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 25.0 mm EFL, Uncoated	UNIVERSAL	$425
KPA19 Uncoated Precision Polished Aspheric LensesPolished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 18.75 mm EFL, Uncoated	UNIVERSAL	$442

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Mounting Options

We offer a full range of optical lens mounts to meet various experimental requirements. Below lists the recommended mounts for spherical lenses of standard sizes. Please see our Lens Mount Guide for additional information.

Note: besides the diameter, please check the Edge Thickness (T_e) specification of the lens and the lens mount to ensure compatibility before purchasing.

Lens Diameter	A-Line™ Lens Mounts	LT Series Lens Tubes	LP Series Lens Positioners	Optics Cage Plus Series
76.2 mm	(M-) LH-3A	N/A	N/A	N/A
50.8 mm	(M-) LH-2A LH-2N	LT20-05 LT20-10 LT20-20 LT20-30	LP-2A LP-2A-XY LP-2A-XYZ	N/A
38.1 mm	(M-) LH-1.5A	LT20 lens tube with LH-2R1.5 adapter	LP-2 lens positioner with LPLH-1.5T adapter	N/A
25.4 mm	(M-) LH-1A LH-1N LH-1XY LH-1TZ-A LH-1TZ	LT10-05 LT10-10 LT10-20 LT10-30	LP-1A LP-1A-XY LP-1A-XYZ	OC1-LH1-S OC1-LH1 OC1-LH1-TZ OC1-LH1-XY OC1-LH1-XYA OC1-LH1-XYC OC1-LH1-XYZ
12.7 mm	(M-) LH-0.5A LH-05N	LT05-05 LT05-10	LP-05A LP-05A-XY LP-05A-XYZ	N/A
6.35 mm	LH-05DB with LH-50R25 adapter	LT05 lens tube with LH-50R25 adapter	LP-05 lens positioner with LPLH-25T adapter	N/A

For non-standard sizes not listed above, check out our variable size lens mounts.

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.

Efficiently Focus or Collect Light

Our Precision Aspheric Lenses have diffraction limited performance on axis, and are available in a range of high numerical apertures. They are ideal for applications such as coupling light into and out of optical fibers, efficiently collecting output from optical sources, or focusing beams onto small high speed detectors.