Compare Model Drawings, CAD & Specs Lens Shape Diameter Effective Focal Length (EFL) F/# Availability Price
Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 22.5 mm EFL, 650-1000 nm
$270
In Stock
Plano-Convex Aspheric 15.0 mm 22.5 mm 1.5
In Stock
Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 18.75 mm EFL, 650-1000 nm
$270
In Stock
Plano-Convex Aspheric 15.0 mm 18.8 mm 1.3
In Stock
Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 15.0 mm EFL, 650-1000 nm
$278
In Stock
Plano-Convex Aspheric 15.0 mm 15.0 mm 1
In Stock
Polished Aspheric Lens, Plano-Convex, L-BAL35, 15 mm, 11.25 mm EFL, 650-1000 nm
$292
4 Weeks
Plano-Convex Aspheric 15.0 mm 11.3 mm 0.8
4 Weeks
Polished Aspheric Lens, Bi-Convex, L-BAL35, 20 mm, 20.0 mm EFL, 650-1000 nm
$308
In Stock
Bi-Convex Aspheric 20.0 mm 20.0 mm 1
In Stock
Polished Aspheric Lens, Bi-Convex, L-BAL35, 20 mm, 15.0 mm EFL, 650-1000 nm
$322
In Stock
Bi-Convex Aspheric 20.0 mm 15.0 mm 0.8
In Stock
Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 37.5 mm EFL, 650-1000 nm
$308
In Stock
Plano-Convex Aspheric 25.0 mm 37.5 mm 1.5
In Stock
Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 31.25 mm EFL, 650-1000 nm
$308
In Stock
Plano-Convex Aspheric 25.0 mm 31.3 mm 1.3
In Stock
Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 25.0 mm EFL, 650-1000 nm
$322
In Stock
Plano-Convex Aspheric 25.0 mm 25.0 mm 1
In Stock
Polished Aspheric Lens, Plano-Convex, L-BAL35, 25 mm, 18.75 mm EFL, 650-1000 nm
$335
In Stock
Plano-Convex Aspheric 25.0 mm 18.8 mm 0.8
In Stock
Polished Aspheric Lens, Bi-Convex, L-BAL35, 30 mm, 30.0 mm EFL, 650-1000 nm
$408
In Stock
Bi-Convex Aspheric 30.0 mm 30.0 mm 1
In Stock
Polished Aspheric Lens, Bi-Convex, L-BAL35, 30 mm, 22.5 mm EFL, 650-1000 nm
$422
In Stock
Bi-Convex Aspheric 30.0 mm 22.5 mm 0.8
In Stock
Polished Aspheric Lens, Bi-Convex, L-BAL35, 40 mm, 40.0 mm EFL, 650-1000 nm
$520
In Stock
Bi-Convex Aspheric 40.0 mm 40.0 mm 1
In Stock
Polished Aspheric Lens, Bi-Convex, L-BAL35, 40 mm, 30.0 mm EFL, 650-1000 nm
$535
In Stock
Bi-Convex Aspheric 40.0 mm 30.0 mm 0.8
In Stock
Polished Aspheric Lens, Bi-Convex, L-BAL35, 50 mm, 50.0 mm EFL, 650-1000 nm
$618
In Stock
Bi-Convex Aspheric 50.0 mm 50.0 mm 1
In Stock
Polished Aspheric Lens, Bi-Convex, L-BAL35, 50 mm, 37.5 mm EFL, 650-1000 nm
$632
In Stock
Bi-Convex Aspheric 50.0 mm 37.5 mm 0.8
In Stock

Specifications

  • Lens Type
    Precision Polished Aspheric Lens
  • Antireflection Coating
    650-1000 nm
  • Coating Type
    NIR Multilayer
  • Coating Code
    AR.16
  • Damage Threshold
    7.5 J/cm2, 10 ns pulses, 10 Hz at 1064 nm
  • 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

Broadband Multilayer NIR Antireflection Coatings

Our broadband AR.16 antireflection coating improves the transmission efficiency of these lenses by reducing surface reflections over a 650-1000 nm wavelength range. The NIR AR multi-layer coating improves the performance over uncoated surfaces. It features a damage threshold of 7.5 J/cm‌2 for 10 ns pulses at 10 Hz and 1064 nm.

Advantages 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 an aspheric lens 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.

Superior Light Collection

Our Aspheric Condenser Lenses provide higher numerical apertures (NA), larger apertures and lower f# ratios, when compared to standard spherical lenses. They are ideally suited for illumination applications, such as light collection and condensing, projection and detection. Examples include coupling light into and out of optical fibers, efficiently collecting output from optical sources, or focusing beams onto small high-speed detectors.

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.

Lens Diameter LH-A-GRP
A-Line™ Lens Mounts
LT_Series_group_update
LT Series Lens Tubes
OM-multi_axis_lens_pos-S
LP Series Lens Positioners
76.2 mm (M-) LH-3A 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
38.1 mm (M-) LH-1.5A LT20 lens tube with LH-2R1.5 adapter LP-2 lens positioner with LPLH-1.5T adapter
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
12.7 mm (M-) LH-0.5A
LH-05N
LT05-05
LT05-10
LP-05A
LP-05A-XY
LP-05A-XYZ
6.35 mm LH-05DB with LH-50R25 adapter LT05 lens tube with LH-50R25 adapter LP-05 lens positioner with LPLH-25T adapter

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