Custom Aspheric Lens Design & Manufacturing

Avantier is a leading manufacturer of high-precision custom and stock aspheric lenses, engineered to deliver diffraction-limited performance for the world’s most demanding optical systems. From rapid prototyping to high-volume production, we provide the expertise needed to reduce spherical aberration and minimize system weight.

Strategic Applications

Our aspheric optics are integrated into advanced systems across critical industries:

Medical & Life Sciences: Endoscopes, high-resolution DNA sequencing, and laser surgery tools.
Aerospace & Defense: SWIR/LWIR thermal imaging and satellite reconnaissance.
Automotive & LiDAR: Autonomous vehicle sensors and heads-up displays (HUD).

Industrial Metrology: 3D scanning and semiconductor inspection.

Why Choose Aspheric Lenses?

Traditional spherical lenses often suffer from marginal ray deviation, leading to blurred images. Aspheric lenses feature a complex, non-spherical surface profile that:

Eliminates Spherical Aberration: Directs all incoming light to a single, precise focal point.
Reduces Part Count: A single asphere can often replace multiple spherical elements, resulting in lighter, more compact assemblies.

Enhances Edge Clarity: Provides superior image quality across the entire field of view, even at high numerical apertures (NA).

Our Manufacturing Capabilities (5mm – 200mm)

Avantier utilizes state-of-the-art optical fabrication technology to meet sub-micron tolerances. Our in-house production ensures every lens meets your exact prescription.

Diameter	5 – 200mm
Diameter Tolerance	+0/-0.100mm – +0/-0.010mm
Asphere Figure Error (P – V)	3μm – smaller than 0.06μm
Vertex Radius (Asphere)	±0.5% – ±0.05%
Sag	25mm max
Typical Slope Error	1μm – 0.15μm per 1mm window
Centering (Beam Deviation)	3 arcmin – 0.5 arcmin
Center Thickness Tolerance	±0.100mm – ±0.010mm
Surface Quality (Scratch Dig)	80-50, 40-20,10-5
Aspheric Surface Metrology	Profilometry (2D & 3D) & Zygo Interferometry

Custom Engineering & Prototyping

We don’t just manufacture; we partner with your engineering team. Avantier provides comprehensive support from Zemax design optimization to final assembly.

Material Selection & Processes

We work with a vast catalog of substrates to suit your specific wavelength requirements:

Precision Glass Molding: Ideal for high-volume, cost-effective production of low-temperature glass.
CNC Grinding & Polishing: Best for medium volume and large diameter (up to 200mm) glass aspheres.
Diamond Turning (SPDT): Specialized for Infrared materials (Ge, Si, ZnSe) and plastics.
Magneto-Rheological Finishing (MRF): Used for achieving extreme surface accuracy and figure correction.

Stock Aspheric Lenses: Ready for Immediate Integration

For rapid prototyping and R&D, Avantier maintains a deep inventory of stock aspheres.

Laser-Grade Aspheres: Optimized for high-power beam shaping and focusing.
Infrared (IR) Aspheres: Germanium and Silicon substrates for thermal sensing.

Uncoated & Coated Options: Available with AR, V-Coat, or Broadband coatings.

Stock Aspheric Lenses

Avantier maintains a comprehensive inventory of stock aspheric lenses for rapid delivery. These lenses cover a broad range of focal lengths, diameters, and materials, including laser-grade and uncoated optics.

Stock – Aspheric Lenses

Part Number	Focal length (mm)	Back Focal length (mm)	Diameter (mm)	Thickness (mm)	Material	Price (USD)
AVTJF-0001	3.1	1.9	5.0	2.0	H-F4	Contact us
AVTJF-0002	3.7	2.4	5.0	2.0	H-K51	Contact us
AVTJF-0003	4.0	1.4	5.0	3.9	H-K51	Contact us
AVTJF-0004	5.6	3.3	8.0	4.0	H-ZK2	Contact us
AVTJF-0005	6.0	4.2	6.7	2.8	H-K51	Contact us
AVTJF-0006	6.5	3.2	10.0	5.0	H-K51	Contact us
AVTJF-0007	6.6	4.3	7.5	3.5	H-K51	Contact us
AVTJF-0008	7.4	4.8	8.5	4.0	H-K51	Contact us
AVTJF-0009	7.5	4.6	12.0	5.5	H-K51	Contact us
AVTJF-0010	7.6	4.0	13.0	6.3	H-K51	Contact us
AVTJF-0011	8.0	3.5	10.0	6.8	H-K51	Contact us
AVTJF-0012	8.0	3.7	12.7	7.5	H-K51	Contact us
AVTJF-0013	8.1	2.9	15.0	8.5	H-K51	Contact us
AVTJF-0014	8.3	5.6	16.0	7.0	H-K9L	Contact us
AVTJF-0015	8.5	8.0	12.0	5.6	H-K51	Contact us
AVTJF-0016	9.0	8.0	6.3	1.7	H-K51	Contact us
AVTJF-0017	10.0	4.9	12.5	7.7	H-K51	Contact us
AVTJF-0018	10.4	7.4	12.0	5.6	H-K51	Contact us
AVTJF-0019	10.5	7.2	12.0	6.0	H-K51	Contact us
AVTJF-0020	11.0	6.0	16.0	8.0	H-F4	Contact us
AVTJF-0021	11.1	5.0	19.9	10.9	H-K51	Contact us
AVTJF-0022	12.0	6.3	15.0	8.6	H-K51	Contact us
AVTJF-0023	12.4	9.5	12.0	4.5	H-K51	Contact us
AVTJF-0024	12.5	7.1	20.0	9.0	H-ZF2	Contact us
AVTJF-0025	13.5	8.6	18.0	7.4	H-K51	Contact us
AVTJF-0026	14.0	10.2	12.9	5.7	H-K9L	Contact us
AVTJF-0027	15.0	10.0	20.0	9.0	H-K51	Contact us
AVTJF-0028	15.3	14.6	24.0	9.0	H-F3	Contact us
AVTJF-0029	15.3	10.7	18.0	7.0	H-K9L	Contact us
AVTJF-0030	16.0	9.1	20.0	10.5	H-K51	Contact us
AVTJF-0031	16.0	7.3	25.4	14.0	H-K51	Contact us
AVTJF-0032	16.3	10.4	20.0	9.0	H-K9L	Contact us
AVTJF-0033	16.4	12.8	20.0	6.4	H-K51	Contact us
AVTJF-0034	16.7	9.5	24.9	11.0	H-K51	Contact us
AVTJF-0035	17.4	12.2	20.0	8.3	H-K51	Contact us
AVTJF-0036	18.0	11.2	24.0	10.4	H-K51	Contact us
AVTJF-0037	18.3	11.4	30.0	14.0	H-K51	Contact us
AVTJF-0038	19.0	15.7	12.0	5.0	H-K51	Contact us
AVTJF-0039	19.4	14.5	26.0	9.1	H-K51	Contact us
AVTJF-0040	19.7	12.9	24.0	10.4	H-K51	Contact us
AVTJF-0041	19.9	11.8	25.0	12.3	H-K51	Contact us
AVTJF-0042	21.6	11.0	34.9	19.0	H-K51	Contact us
AVTJF-0043	23.5	15.0	32.5	13.5	H-K51	Contact us
AVTJF-0044	24.0	14.7	30.0	14.1	H-K51	Contact us
AVTJF-0045	25.0	19.4	25.0	8.5	H-K51	Contact us
AVTJF-0046	25.6	16.7	30.0	13.5	H-K51	Contact us
AVTJF-0047	26.8	20.2	30.0	10.0	H-K51	Contact us
AVTJF-0048	28.5	18.6	40.0	15.0	H-K9L	Contact us
AVTJF-0049	29.4	20.3	35.0	13.9	H-K51	Contact us
AVTJF-0050	29.5	20.9	40.0	15.5	H-K9L	Contact us
AVTJF-0051	30.0	19.0	38.4	19.0	H-K51	Contact us
AVTJF-0052	32.0	17.0	50.8	25.0	H-K51	Contact us
AVTJF-0053	32.0	20.9	45.0	18.5	H-K51	Contact us
AVTJF-0054	32.0	20.3	40.0	11.8	H-K51	Contact us
AVTJF-0055	35.8	24.8	50.0	16.7	H-K51	Contact us
AVTJF-0056	39.8	25.6	60.0	26.0	H-K51	Contact us
AVTJF-0057	40.0	26.0	50.0	21.4	H-K51	Contact us
AVTJF-0058	49.2	29.5	75.0	30.0	H-K51	Contact us

Also available in volume pricing, please contact Avantier for details. Please note that prices are subject to fluctuation and may change without prior notice. For the most accurate and up-to-date pricing information, kindly contact our office. Additional shipping fees will be calculated and added to your total order.

Stock - Uncoated Aspheric Lenses

Part Number	Description	Dia. (mm)	EFL (mm)	NA	BFL (mm)	Substrate	Centering (arcmin)	CA (mm)	ET (mm)	CT (mm)	F/#	Shape of Back Surface	Wavelength Range (nm)	Price (USD)
AVTMF-0001	10mm Dia, 0.50 Numerical Aperture Uncoated	10.00 +0.0/-0.1	10.00 @ 587.6nm	0.50	7.48	L-BAL35	≤5	9.00	1.69	4.00 ±0.1	1.00	Plano	330 – 2400	$170.00
AVTMF-0002	10mm Dia, 0.67 Numerical Aperture Uncoated	10.00 +0.0/-0.1	7.50 @ 587.6nm	0.67	4.51	N-SF5	≤5	9.00	2.21	5.00 ±0.1	0.75	Plano	380 – 2500	$170.00
AVTMF-0003	12.5mm Dia, 0.50 Numerical Aperture Uncoated	12.50 +0.0/-0.1	12.50 @ 587.6nm	0.50	9.35	L-BAL35	≤5	11.25	2.11	5.00 ±0.1	1.00	Plano	330 – 2400	$190.00
AVTMF-0004	12.5mm Dia, 0.66 Numerical Aperture Uncoated	12.50 +0.0/-0.1	9.50 @ 587.6nm	0.66	6.51	N-SF5	≤5	11.25	1.60	5.00 ±0.1	0.76	Plano	380 – 2500	$190.00
AVTMF-0005	15mm Dia., 0.33 Numerical Aperture Uncoated	15.00 +0.0/-0.1	22.50 @ 587.6nm	0.33	19.98	L-BAL35	≤5	13.50	1.80	4.00 ±0.1	1.50	Plano	330 – 2400	$210.00
AVTMF-0006	15mm Dia., 0.40 Numerical Aperture Uncoated	15.00 +0.0/-0.1	18.75 @ 587.6nm	0.40	15.92	L-BAL35	≤5	13.50	1.82	4.50 ±0.1	1.25	Plano	330 – 2400	$210.00
AVTMF-0007	15mm Dia., 0.50 Numerical Aperture Uncoated	15.00 +0.0/-0.1	15.00 @ 587.6nm	0.50	11.54	L-BAL35	≤5	13.50	2.04	5.50 ±0.1	1.00	Plano	330 – 2400	$210.00
AVTMF-0008	15mm Dia., 0.66 Numerical Aperture Uncoated	15.00 +0.0/-0.1	11.25 @ 587.6nm	0.66	6.85	L-BAL35	≤5	13.50	1.94	7.00 ±0.1	0.75	Plano	330 – 2400	$210.00
AVTMF-0009	15mm Dia., 0.83 Numerical Aperture Uncoated	15.00 +0.0/-0.1	9.00 @ 587.6nm	0.83	4.81	N-SF5	≤5	13.50	1.35	7.00 ±0.1	0.60	Plano	380 – 2500	$320.00
AVTMF-0010	20mm Dia., 0.50 Numerical Aperture Uncoated	20.00 +0.0/-0.1	20.00 @ 587.6nm	0.50	15.19	L-BAL35	≤5	18.00	3.44	8.00 ±0.1	1.00	Convex, R2=200mm	330 – 2400	$230.00
AVTMF-0011	20mm Dia., 0.66 Numerical Aperture Uncoated	20.00 +0.0/-0.1	15.00 @ 587.6nm	0.66	9.16	L-BAL35	≤5	18.00	3.05	9.60 ±0.1	0.75	Convex, R2=200mm	330 – 2400	$230.00
AVTMF-0012	20mm Dia., 0.8 Numerical Aperture Uncoated	20.00 +0.0/-0.1	12.50 @ 587.6nm	0.80	7.12	N-SF5	≤5	18.00	1.91	9.00 ±0.1	0.63	Plano	380 – 2500	$340.00
AVTMF-0013	25mm Dia, 0.25 Numerical Aperture, Uncoated	25.00 +0.0/-0.1	50.00 @ 587.6nm	0.25	46.54	L-BAL35	≤5	22.50	2.80	5.50 ±0.1	2.00	Plano	330 – 2400	$250.00
AVTMF-0014	25mm Dia., 0.33 Numerical Aperture Uncoated	25.00 +0.0/-0.1	37.50 @ 587.6nm	0.33	33.72	L-BAL35	≤5	22.50	2.30	6.00 ±0.1	1.50	Plano	330 – 2400	$250.00
AVTMF-0015	25mm Dia., 0.40 Numerical Aperture Uncoated	25.00 +0.0/-0.1	31.25 @ 587.6nm	0.40	27.16	L-BAL35	≤5	22.50	2.04	6.50 ±0.1	1.25	Plano	330 – 2400	$250.00
AVTMF-0016	25mm Dia., 0.50 Numerical Aperture Uncoated	25.00 +0.0/-0.1	25.00 @ 587.6nm	0.50	20.28	L-BAL35	≤5	22.50	1.74	7.50 ±0.1	1.00	Plano	330 – 2400	$250.00
AVTMF-0017	25mm Dia., 0.66 Numerical Aperture Uncoated	25.00 +0.0/-0.1	18.75 @ 587.6nm	0.66	12.46	L-BAL35	≤5	22.50	1.63	10.00 ±0.1	0.75	Plano	330 – 2400	$250.00
AVTMF-0018	25mm Dia., 0.83 Numerical Aperture Uncoated	25.00 +0.0/-0.1	15.00 @ 587.6nm	0.83	8.42	N-SF5	≤5	22.50	1.64	11.00 ±0.1	0.60	Plano	380 – 2500	$375.00
AVTMF-0019	30mm Dia., 0.50 Numerical Aperture Uncoated	30.00 +0.0/-0.1	30.00 @ 587.6nm	0.50	22.99	L-BAL35	≤5	27.00	4.81	11.70 ±0.1	1.00	Convex, R2=300mm	330 – 2400	$300.00
AVTMF-0020	30mm Dia., 0.66 Numerical Aperture Uncoated	30.00 +0.0/-0.1	22.50 @ 587.6nm	0.66	13.73	L-BAL35	≤5	27.00	4.57	14.40 ±0.1	0.75	Convex, R2=300mm	330 – 2400	$300.00
AVTMF-0021	30mm Dia., 0.86 Numerical Aperture Uncoated	30.00 +0.0/-0.1	17.50 @ 587.6nm	0.86	9.43	N-SF5	≤5	27.00	1.78	13.50 ±0.1	0.58	Plano	380 – 2500	$430.00
AVTMF-0022	40mm Dia., 0.50 Numerical Aperture Uncoated	40.00 +0.0/-0.1	40.00 @ 587.6nm	0.50	30.68	L-BAL35	≤5	36.00	6.39	15.50 ±0.1	1.00	Convex R2=400mm	330 – 2400	$420.00
AVTMF-0023	40mm Dia., 0.66 Numerical Aperture Uncoated	40.00 +0.0/-0.1	30.00 @ 587.6nm	0.66	20.60	L-BAL35	≤5	36.00	2.56	15.50 ±0.1	0.75	Convex R2=400mm	330 – 2400	$420.00
AVTMF-0024	40mm Dia., 0.80 Numerical Aperture Uncoated	40.00 +0.0/-0.1	25.00 @ 587.6nm	0.80	15.73	N-SF5	≤5	36.00	1.49	15.50 ±0.1	0.63	Plano	380 – 2500	$540.00
AVTMF-0025	50mm Dia., 0.50 Numerical Aperture Uncoated	50.00 +0.0/-0.1	50.00 @ 587.6nm	0.50	38.33	L-BAL35	≤5	45.00	8.01	19.40 ±0.1	1.00	Convex, R=500mm	330 – 2400	$500.00
AVTMF-0026	50mm Dia., 0.66 Numerical Aperture Uncoated	50.00 +0.0/-0.1	37.50 @ 587.6nm	0.66	25.74	L-BAL35	≤5	45.00	3.23	19.40 ±0.1	0.75	Convex, R=500mm	330 – 2400	$500.00
AVTMF-0027	50mm Dia., 0.83 Numerical Aperture Uncoated	50.00 +0.0/-0.1	30.00 @ 587.6nm	0.83	18.04	N-SF5	≤5	45.00	1.44	20.00 ±0.1	0.60	Plano	380 – 2500	$720.00
AVTMF-0028	75mm Dia., 0.33 Numerical Aperture Uncoated	75.00 +0.0/-0.1	112.50 @ 587.6nm	0.33	101.42	N-BK7	≤5	67.50	4.13	16.80 ±0.1	1.50	Plano	350 – 2200	$690.00
AVTMF-0029	75mm Dia., 0.50 Numerical Aperture Uncoated	75.00 +0.0/-0.1	75.00 @ 587.6nm	0.50	58.25	N-BK7	≤5	67.50	4.99	25.40 ±0.1	1.00	Plano	350 – 2200	$690.00
AVTMF-0030	75mm Dia., 0.63 Numerical Aperture Uncoated	75.00 +0.0/-0.1	60.00 @ 587.6nm	0.63	45.77	N-SF5	≤5	67.50	4.73	23.80 ±0.1	0.80	Plano	380 – 2500	$690.00
AVTMF-0031	100mm Dia., 0.33 Numerical Aperture Uncoated	100.00 +0.0/-0.1	150.00 @ 587.6nm	0.33	135.50	N-BK7	≤5	90.00	5.11	22.00 ±0.1	1.50	Plano	350 – 2200	$880.00
AVTMF-0032	100mm Dia., 0.50 Numerical Aperture Uncoated	100.00 +0.0/-0.1	100.00 @ 587.6nm	0.50	78.18	N-BK7	≤5	90.00	5.90	33.10 ±0.1	1.00	Plano	350 – 2200	$880.00
AVTMF-0033	100mm Dia., 0.63 Numerical Aperture Uncoated	100.00 +0.0/-0.1	80.00 @ 587.6nm	0.63	61.35	N-SF5	≤5	90.00	5.78	31.20 ±0.1	0.80	Plano	380 – 2500	$880.00
AVTMF-0034	150mm Dia., 0.33 Numerical Aperture Uncoated	150.00 +0.0/-0.1	225.00 @ 587.6nm	0.33	204.04	N-BK7	≤5	128.00	6.46	31.80 ±0.1	1.50	Plano	350 – 2200	$1,950.00
AVTMF-0035	150mm Dia., 0.50 Numerical Aperture Uncoated	150.00 +0.0/-0.1	150.00 @ 587.6nm	0.50	118.16	N-BK7	≤5	128.00	7.51	48.30 ±0.1	1.00	Plano	350 – 2200	$1,950.00
AVTMF-0036	150mm Dia., 0.63 Numerical Aperture Uncoated	150.00 +0.0/-0.1	120.00 @ 587.6nm	0.63	92.86	N-SF5	≤5	128.00	7.30	45.40 ±0.1	0.80	Plano	380 – 2500	$1,950.00
AVTMF-0037	200mm Dia., 0.33 Numerical Aperture Uncoated	200.00 +0/-0.1	300.00 @ 587.6nm	0.33	272.57	N-BK7	≤5	170.00	7.82	41.60 ±0.1	1.50	Plano	350 – 2200	$3,700.00

For AVTMF-0001 to AVTMF-0037, the Asphere Figure Error (RMS) is 1.2λ, and the Surface Quality is 60-40. Please note that prices are subject to fluctuation and may change without prior notice. For the most accurate and up-to-date pricing information, kindly contact our office. Additional shipping fees will be calculated and added to your total order.

Stock - High Precision Laser Grade Aspheric Lenses

Part Number	Description	Compatible Brands	Dia. (mm)	EFL (mm)	NA	BFL (mm)	Substrate	Centering (arcmin)	CA (mm)	ET (mm)	CT (mm)	F/#	Shape of Back Surface	Unit Price (USD)	Price (USD) *5-9 pcs
AVTGF-0001	25.4mm Dia x 50.8mm FL, 355nm V-Coat	Edmund Optics (39-556)	25.40 +0.00/-0.05	50.80 @ 355nm	0.25	45.39	Fused Silica (Corning 7980)	<1	21.40	4.54	7.98	2	Plano	$730.00	$720.00
AVTGF-0002	25.4mm Dia x 50.8mm FL, 532nm V-Coat	Edmund Optics (39-558)	25.40 +0.00/-0.05	50.80 @ 532nm	0.25	45.36	Fused Silica (Corning 7980)	<1	21.40	4.40	7.90	2	Plano	$825.00	$800.00
AVTGF-0003	25.4mm Dia x 50.8mm FL, 1064nm V-Coat	Edmund Optics (39-560)	25.40 +0.00/-0.05	50.80 @ 1064nm	0.25	45.03	Fused Silica (Corning 7980)	<1	21.40	4.70	8.40	2	Plano	$825.00	$800.00
AVTGF-0004	50.8mm Dia x 101.6mm FL, 355nm V-Coat	Edmund Optics (39-563)	50.80 +0.00/-0.05	101.60 @ 355nm	0.25	97.96	Fused Silica (Corning 7980)	<1	46.80	4.11	10.98	2	Plano	$950.00	$925.00
AVTGF-0005	50.8mm Dia x 101.6mm FL, 532nm V-Coat	Edmund Optics (39-565)	50.80 +0.00/-0.05	101.60 @ 532nm	0.25	93.95	Fused Silica (Corning 7980)	<1	46.80	4.10	11.20	2	Plano	$1,125.00	$1,100.00
AVTGF-0006	50.8mm Dia x 101.6mm FL, 1064nm V-Coat	Edmund Optics (39-567)	50.80 +0.00/-0.05	101.60 @ 1064nm	0.25	94.70	Fused Silica (Corning 7980)	<1	46.80	2.69	10.00	2	Plano	$1,125.00	$1,100.00

Also available in volume pricing, please contact Avantier for details. Please note that prices are subject to fluctuation and may change without prior notice. For the most accurate and up-to-date pricing information, kindly contact our office. Additional shipping fees will be calculated and added to your total order.

Stock – Germanium Aspheric Lenses

Part Number	Description	Dia. (mm)	EFL (mm)	NA	BFL (mm)	Asphere Figure Error(RMS)	Centering (arcmin)	CA (mm)	ET (mm)	CT (mm)	F/#	Radius R2 (mm)	Shape of Back Surface	Price (USD)
AVTZF-0001	12.5mm Dia x 9.5mm FL Uncoated, Ge Aspheric Lens	12.50 +0.00/-0.10	9.50 @ 8000nm	0.65	8.25	λ/6	≤5	11.25	4.36	5.00 ±0.10	0.76	Infinite	Plano	$550.00
AVTZF-0002	12.5mm Dia x 12.5mm FL Uncoated, Ge Aspheric Lens	12.50 +0.00/-0.10	12.50 @ 8000nm	0.50	11.75	λ/6	≤5	11.25	2.50	3.00 ±0.10	1.00	Infinite	Plano	$490.00
AVTZF-0003	12.5mm Dia x 25mm FL Uncoated, Ge Aspheric Lens	12.50 +0.00/-0.10	25.00 @ 8000nm	0.25	24.25	λ/6	≤5	11.25	2.74	3.00 ±0.10	2.00	Infinite	Plano	$490.00
AVTZF-0004	12.5mm Dia x 37.5mm FL Uncoated, Ge Aspheric Lens	12.50 +0.00/-0.10	37.50 @ 8000nm	0.16	36.75	λ/6	≤5	11.25	2.83	3.00 ±0.10	3.00	Infinite	Plano	$590.00
AVTZF-0005	25mm Dia x 12.5mm FL Uncoated, Ge Aspheric Lens	25.00 +0.0/-0.1	12.50 @ 4000nm	1.00	11.61	λ/6	≤5	22.50	2.50	4.24 ±0.10	0.50	435.187	Convex	$970.00
AVTZF-0006	25mm Dia x 15mm FL Uncoated, Ge Aspheric Lens	25.00 +0.0/-0.1	15.00 @ 4000nm	0.83	14.00	λ/6	≤5	22.50	2.47	4.00 ±0.10	0.60	Infinite	Plano	$900.00
AVTZF-0007	25mm Dia x 20mm FL Uncoated, Ge Aspheric Lens	25.00 +0.0/-0.1	20.00 @ 4000nm	0.63	19.08	λ/6	≤5	22.50	2.50	3.70 ±0.10	0.79	Infinite	Plano	$820.00
AVTZF-0008	25mm Dia x 25mm FL Uncoated, Ge Aspheric Lens	25.00 +0.0/-0.1	25.00 @ 4000nm	0.50	22.51	λ/6	≤5	22.50	2.32	3.45 ±0.10	1.00	37.8	Concave	$775.00
AVTZF-0009	25mm Dia x 30mm FL Uncoated, Ge Aspheric Lens	25.00 +0.0/-0.1	30.00 @ 4000nm	0.42	27.52	λ/6	≤5	22.50	2.29	3.25 ±0.10	1.19	40	Concave	$775.00
AVTZF-0010	25mm Dia x 40mm FL Uncoated, Ge Aspheric Lens	25.00 +0.0/-0.1	40.00 @ 4000nm	0.31	37.89	λ/6	≤5	22.50	2.38	3.10 ±0.10	1.61	65.6	Concave	$775.00
AVTZF-0011	25mm Dia x 50mm FL Uncoated, Ge Aspheric Lens	25.00 +0.0/-0.1	50.00 @ 4000nm	0.25	48.44	λ/6	≤5	22.50	2.45	3.00 ±0.10	2.00	142.9	Concave	$775.00
AVTZF-0012	25mm Dia x 75mm FL Uncoated, Ge Aspheric Lens	25.00 +0.0/-0.1	75.00 @ 4000nm	0.17	72.30	λ/6	≤5	22.50	2.39	2.80 ±0.10	2.94	78	Concave	$775.00
AVTZF-0013	50mm Dia x 25mm FL Uncoated, Ge Aspheric Lens	50.00 +0.0/-0.1	25.00 @ 4000nm	1.00	20.64	λ/6	≤5	45.00	2.50	7.75 ±0.10	0.50	49.34	Concave	$1,550.00
AVTZF-0014	50mm Dia x 50mm FL Uncoated, Ge Aspheric Lens	50.00 +0.0/-0.1	50.00 @ 4000nm	0.50	45.92	λ/6	≤5	45.00	2.52	5.10 ±0.10	1.00	62.38	Concave	$1,550.00

Please note that prices are subject to fluctuation and may change without prior notice. For the most accurate and up-to-date pricing information, kindly contact our office. Additional shipping fees will be calculated and added to your total order.

Real-World Applications & Case Studies

Our engineering team doesn’t just manufacture lenses; we solve complex optical challenges. Explore our recent work in high-precision aspheric integration:

Infrared Lens Design for Scientific Research: Optimized for Design for Manufacturing (DFM), we developed high-performance IR aspheres that maintain thermal stability and precision in sensitive laboratory environments.
Cold Atom Trapping & Imaging: We designed a custom objective lens system capable of trapping and imaging single atoms, requiring extreme numerical aperture (NA) and diffraction-limited performance.
Reverse Engineering of Complex Objectives: Leveraging our metrology suite, we successfully reverse-engineered and improved upon existing objective and projection lens designs to enhance throughput and reduce aberrations.

Technical Resource: Performance Comparison

When designing a system, choosing the right lens geometry is critical for MTF (Modulation Transfer Function) performance.

Spherical vs. Aspheric Spot Size (25mm f/1 Lens)

Object Angle (°)	Spherical Spot Size (μm)	Aspheric Spot Size (μm)
0.0	710.01	71.43
0.5	710.96	3.91
1.0	713.84	8.11

Optical Advantages of Aspheric Lenses

Spherical Aberration Correction – Aspheric lenses are expertly engineered to direct all incoming light rays to a single focal point, eliminating spherical aberration. This enhances image sharpness, minimizes blur, and ensures optimal focus across the field—making them ideal for high-precision imaging systems, laser collimation, and optical instrumentation.

Aspheric vs. High-Index and Pancake Lenses – While high-index lenses use material properties to improve light bending, aspheric lenses optimize surface geometry for superior aberration correction. Compared to compact pancake lenses, aspheric lenses deliver significantly better edge-to-edge image clarity and reduced distortion.

Advanced Surface Geometry & Freeform Capabilities – Avantier supports both rotationally symmetric and freeform aspheric designs. These profiles feature curvature that varies with radial distance from the optical axis, offering greater flexibility in correcting complex aberrations. Key surface profile metrics include:

Qbfs – RMS slope departure from a best-fit sphere
Qcon – Sag departure from a base conic

Structure of an Aspheric Lens

Aspheric lenses are optical elements with a radially varying curvature, allowing them to correct aberrations more effectively than spherical lenses. Unlike traditional lenses with uniform curvature, aspheric surfaces are designed to bring light to a sharper, more precise focus.

These lenses are widely used in:

Automotive sensors
LED optics
Medical imaging
High-resolution cameras
Laser systems

The surface of a rotationally symmetric asphere is mathematically defined using a sag equation:

Where:

Z: sag of surface parallel to the optical axis
s: radial distance from the optical axis
C: curvature, inverse of radius
k: conic constant
A4, A6, …: 4th, 6th, … order aspheric coefficients

When all coefficients are zero, the surface is a standard conic shape—elliptical, parabolic, or hyperbolic, depending on the value of k.

Spherical vs. Aspheric Performance Comparison

As shown in the chart below, a 25 mm f/1 spherical lens produces significantly larger spot sizes compared to an equivalent aspheric lens:

Object Angle (°)	Spherical Spot Size (μm)	Aspheric Spot Size (μm)
0.0	710.01	71.43
0.5	710.96	3.91
1.0	713.84	8.11

MTF Comparison: All Spherical vs. Aspheric Triplet Design

This table compares the Modulation Transfer Function (MTF) performance of two triplet lenses—one with only spherical surfaces, and the other with a single aspheric surface:

Object Angle (°)	All Spherical (Tangential/Sagittal)	With Aspheric (Tangential/Sagittal)
0.0	13.3 / 13.3	61.9 / 61.9
7.0	14.9 / 14.9	31.1 / 40.9
10.0	17.3 / 14.8	36.3 / 41.5

Avantier measures and controls all critical aspects of surface accuracy:

Form Error – Large-scale deviations, RMS or peak-to-valley
Waviness – Mid-frequency undulations (slope error)
Surface Roughness – High-frequency texture, relevant for scatter & laser performance
Radius Error – Curvature deviation corrected by focus tuning

Manufacturing Methods at Avantier

Method	Benefits
Precision Glass Molding	Cost-efficient for high-volume production
Precision Polishing & MRF	High-precision shaping for low-to-medium volume applications
SPDT Diamond Turning	Excellent for plastics, metals, mold creation & freeforms
Polymer Molding/Injection	Lightweight, low-cost optics for AR/VR, illumination, and consumer

How to Select the Right Aspheric Lens for Your Application

Key Considerations

- UV, VIS, IR compatibility
- Coating options (AR, IR, broadband)
- Mechanical integration (CAD, full prescription)
- Budget and production scale

Application-Based Lens Guide

Application	Recommended Lens Type	Key Features
High-NA Imaging	Precision Polished Aspheres	Diffraction-limited performance, glass/plastic options
Laser & Volume Systems	Precision Molded Aspheres	Ideal for laser collimation, barcode, data reading
Broadband Color Correction	Color-Corrected Aspheric Lenses	Chromatic + spherical correction, hybrid designs
Thermal / IR Imaging	Infrared Aspheric Lenses	Ge/ZnSe/ZnS optics for MWIR, LWIR, thermal sensing

Frequently Asked Questions

How does Avantier verify the surface accuracy of custom aspheres?

Q: How does Avantier verify the surface accuracy of custom aspheres?

A: We use advanced metrology, including non-contact 3D profilometry and laser interferometry. This ensures that the sag profile matches your design coefficients (Qbfs, Qcon) with nanometer precision.

What is the typical lead time for custom aspheric prototypes?

Q: How have advances in manufacturing made aspheric lenses more versatile and cost-effective?

A: Depending on material availability and complexity, typical lead times for custom prototypes range from 3 to 6 weeks. We also offer expedited “Fast-Track” services for urgent projects.

Can you replace my existing multi-lens assembly with a single asphere?

Q: Can you replace my existing multi-lens assembly with a single asphere?

A: In many cases, yes. Our optical engineers can perform a “Lens Count Reduction” analysis to simplify your design, reduce weight, and lower assembly costs without sacrificing optical performance.