Precision Polished Aspheric Lenses

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Overview

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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Products

Compare	Model	Compatibility	rankScore	Lens Shape	Diameter	Effective Focal Length (EFL)	F/#	Availability	Price	Brand
KPA10 Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 22.5 mm EFL, Uncoated $354 In Stock	KPA10 Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 22.5 mm EFL, Uncoated	UNIVERSAL	1.0	Plano-Convex Aspheric	15.0 mm	22.5 mm	1.5	In Stock	$354	Newport
KPA11 Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 18.75 mm EFL, Uncoated $354 In Stock	KPA11 Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 18.75 mm EFL, Uncoated	UNIVERSAL	1.0	Plano-Convex Aspheric	15.0 mm	18.8 mm	1.3	In Stock	$354	Newport
KPA12 Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 15.0 mm EFL, Uncoated $366 In Stock	KPA12 Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 15.0 mm EFL, Uncoated	UNIVERSAL	1.0	Plano-Convex Aspheric	15.0 mm	15.0 mm	1	In Stock	$366	Newport
KPA13 Polished Aspheric Lens, Plano-Convex, L-BAL35, 15.00 mm, 11.25 mm EFL, Uncoated $374 In Stock	KPA13 Polished Aspheric Lens, Plano-Convex, L-BAL35, 15.00 mm, 11.25 mm EFL, Uncoated	UNIVERSAL	1.0	Plano-Convex Aspheric	15.0 mm	11.3 mm	0.8	In Stock	$374	Newport
KPA14 Polished Aspheric Lens, Bi-Convex, L-BAL35, 20 mm, 20.0 mm EFL, Uncoated $397 In Stock	KPA14 Polished Aspheric Lens, Bi-Convex, L-BAL35, 20 mm, 20.0 mm EFL, Uncoated	UNIVERSAL	1.0	Bi-Convex Aspheric	20.0 mm	20.0 mm	1	In Stock	$397	Newport
KPA15 Polished Aspheric Lens, Bi-Convex, L-BAL35, 20 mm, 15.0 mm EFL, Uncoated $419 In Stock	KPA15 Polished Aspheric Lens, Bi-Convex, L-BAL35, 20 mm, 15.0 mm EFL, Uncoated	UNIVERSAL	1.0	Bi-Convex Aspheric	20.0 mm	15.0 mm	0.8	In Stock	$419	Newport
KPA16 Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 37.5 mm EFL, Uncoated $403 In Stock	KPA16 Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 37.5 mm EFL, Uncoated	UNIVERSAL	1.0	Plano-Convex Aspheric	25.0 mm	37.5 mm	1.5	In Stock	$403	Newport
KPA17 Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 31.25 mm EFL, Uncoated $405 In Stock	KPA17 Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 31.25 mm EFL, Uncoated	UNIVERSAL	1.0	Plano-Convex Aspheric	25.0 mm	31.3 mm	1.3	In Stock	$405	Newport
KPA18 Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 25.0 mm EFL, Uncoated $425 In Stock	KPA18 Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 25.0 mm EFL, Uncoated	UNIVERSAL	1.0	Plano-Convex Aspheric	25.0 mm	25.0 mm	1	In Stock	$425	Newport
KPA19 Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 18.75 mm EFL, Uncoated $442 In Stock	KPA19 Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 18.75 mm EFL, Uncoated	UNIVERSAL	1.0	Plano-Convex Aspheric	25.0 mm	18.8 mm	0.8	In Stock	$442	Newport
KPA20 Polished Aspheric Lens, Bi-Convex, L-BAL35, 30 mm, 30.0 mm EFL, Uncoated $516 In Stock	KPA20 Polished Aspheric Lens, Bi-Convex, L-BAL35, 30 mm, 30.0 mm EFL, Uncoated	UNIVERSAL	1.0	Bi-Convex Aspheric	30.0 mm	30.0 mm	1	In Stock	$516	Newport
KPA21 Polished Aspheric Lens, Bi-Convex, L-BAL35, 30 mm, 22.5 mm EFL, Uncoated $540 In Stock	KPA21 Polished Aspheric Lens, Bi-Convex, L-BAL35, 30 mm, 22.5 mm EFL, Uncoated	UNIVERSAL	1.0	Bi-Convex Aspheric	30.0 mm	22.5 mm	0.8	In Stock	$540	Newport
KPA22 Polished Aspheric Lens, Bi-Convex, L-BAL35, 40 mm, 40.0 mm EFL, Uncoated $653 In Stock	KPA22 Polished Aspheric Lens, Bi-Convex, L-BAL35, 40 mm, 40.0 mm EFL, Uncoated	UNIVERSAL	1.0	Bi-Convex Aspheric	40.0 mm	40.0 mm	1	In Stock	$653	Newport
KPA23 Polished Aspheric Lens, Bi-Convex, L-BAL35, 40 mm, 30.0 mm EFL, Uncoated $675 In Stock	KPA23 Polished Aspheric Lens, Bi-Convex, L-BAL35, 40 mm, 30.0 mm EFL, Uncoated	UNIVERSAL	1.0	Bi-Convex Aspheric	40.0 mm	30.0 mm	0.8	In Stock	$675	Newport
KPA24 Polished Aspheric Lens, Bi-Convex, L-BAL35, 50 mm, 50.0 mm EFL, Uncoated $787 In Stock	KPA24 Polished Aspheric Lens, Bi-Convex, L-BAL35, 50 mm, 50.0 mm EFL, Uncoated	UNIVERSAL	1.0	Bi-Convex Aspheric	50.0 mm	50.0 mm	1	In Stock	$787	Newport
KPA25 Polished Aspheric Lens, Bi-Convex, L-BAL35, 50 mm, 37.5 mm EFL, Uncoated $853 In Stock	KPA25 Polished Aspheric Lens, Bi-Convex, L-BAL35, 50 mm, 37.5 mm EFL, Uncoated	UNIVERSAL	1.0	Bi-Convex Aspheric	50.0 mm	37.5 mm	0.8	In Stock	$853	Newport

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Specifications

Lens Type

Precision Polished Aspheric Lens
Antireflection Coating

Uncoated
Lens Material

L-BAL 35 (589/611)
Surface Quality

60-40 scratch-dig

Surface Accuracy

0.75 µm RMS
Diameter Tolerance

+0.0/-0.1 mm
Center Thickness Tolerance

±0.1 mm
Clear Aperture

90% of central diameter

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.

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