Specifications

  • Lens Type
    Achromatic Doublet
  • Lens Shape
    Plano-Convex
  • Antireflection Coating
    430-700 nm
  • Coating Type
    Visible Multilayer
  • Coating Code
    AR.14
  • Damage Threshold
    1.0 J/cm2 @ 1064 nm, 10 ns , 10 Hz
  • Transmission
    T>97%
  • Surface Quality
    40-20 scratch-dig
  • Surface Accuracy, Irregularity
    λ/4
  • Surface Accuracy, Power
    1.5 λ
  • Orientation
    Steepest convex surface should face the infinite conjugate
  • Design Wavelengths
    486.1, 546.1, 656.3 nm
  • Centration
    ≤3 arc min
  • Diameter Tolerance
    +0/-0.1 mm
  • Focal Length Tolerance
    ±2.0%

Features

Achromatic Lenses

An Achromat, or Achromatic lens, is usually made up of multiple optical elements, which can be air-spaced or cemented together. These typically alternate a positive lens of low index material, such as crown glass, and a negative lens of high index material, such as flint glass. The elements are selected and optimized so that dispersion in the positive element is corrected by the negative element, resulting in minimized chromatic aberration at two well-separated wavelengths. Achromats offer a nearly constant focal length across the visible spectrum, providing superior off-axis performance. Doublet lenses offer users many more design options than singlet lenses, which allows for superior performance in visual imaging and laser beam manipulation applications. Our lenses are computer designed, minimizing aberrations and providing a smaller focused spot size. They are offered with multi-layer or single-layer AR coatings. Standard diameters and focal lengths may be interchanged with our singlet lenses. Further, achromats are available in a wide variety of configurations, including positive, negative, triplet, and aspherized. These lenses are produced as doublets or triplets (three elements). The collimated beam should enter or depart from the surface (R1 in drawing) with higher curvature (smaller radius) for optimized performance.

AR.14 Broadband Visible Antireflection Coating

Our AR.14 broadband multilayer antireflection coating markedly improves the transmission efficiency of these lenses by reducing surface reflections over a 430-700 nm wavelength range. This visible AR coating performs effectively for multiple visible wavelengths and tunable lasers eliminating the need for several sets of optics.

Superior Performance in Monochromatic Applications

Achromats are superior to singlet lenses for monochromatic applications at any visible wavelength. Negative achromatic lenses are used primarily to extend focal lengths, which is often combined with positive achromatic mirror systems and imaging lenses. Generally a diffraction limited spot may be achieved when using a monochromatic source such as laser.

IR Performance

Visible achromats are still usable in the IR, although they are not optimized. An achromat will not be diffraction limited at 1064 nm but performance will still be superior to a singlet lens. At 1064 nm, the focal length of a typical achromat increases by approximately 0.75%. Choosing these optics for image relay or optical processing applications will be more desirable than single element lenses.

Design Wavelengths

Newport's visible achromatic doublet lenses are design around the following visible wavelengths 486.1, 546.1, and 656.3 nm.

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 (Te) specification of the lens and the lens mount to ensure compatibility before purchasing. 

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		 optics-cage-plus-S
Optics Cage Plus Series
76.2 mm (M-

Model: M-LH-3A

Fixed Lens Mount, 3.0 in. (76.2 mm) Diameter, M4 Thread, A-LINE

$69.00
Product Series Overview
A-Line Fixed Lens Mounts
) LH-3A

Model: LH-3A

Fixed Lens Mount, 3.0 in. (76.2 mm), 8-32 Thread, A-LINE

$69.00
Product Series Overview
A-Line Fixed Lens Mounts
N/A N/A N/A
50.8 mm (M-

Model: M-LH-2A

Fixed Lens Mount, Ø2.0 in. (50.8 mm), M4 Thread, A-LINE

$36.00
Product Series Overview
A-Line Fixed Lens Mounts
) LH-2A

Model: LH-2A

Fixed Lens Mount, 2.0 in. (50.8 mm), 8-32 Thread, A-LINE

$36.00
Product Series Overview
A-Line Fixed Lens Mounts

LH-2N

Model: LH-2N

Lens Mount, Insertable, 50.8 mm Diameter, A-LINE

$42.00
Product Series Overview
A-Line™ Insertable Fixed Lens Mounts
LT20-05

Model: LT20-05

Lens Tube, 2 inch LT Series, 1/2 inch length

$36.00
Product Series Overview
Lens Tubes

LT20-10

Model: LT20-10

Lens Tube, 2 inch LT Series, 1 inch length

$39.00
Product Series Overview
Lens Tubes

LT20-20

Model: LT20-20

Lens Tube, 2 inch LT Series, 2 inch length

$42.00
Product Series Overview
Lens Tubes

LT20-30

Model: LT20-30

Lens Tube, 2 inch dia. LT Series, 3 inch length

$47.00
Product Series Overview
Lens Tubes
LP-2A

Model: LP-2A

Precision Lens Positioner, 2.0 in., 100 TPI XYθXθY, 80 TPI Z

$1,088.00
Product Series Overview
Precision Multi-Axis Lens Positioners

LP-2A-XY

Model: LP-2A-XY

Precision Lens Positioner, 2.0 in. Diameter, 100 TPI XY

$702.00
Product Series Overview
Precision Multi-Axis Lens Positioners

LP-2A-XYZ

Model: LP-2A-XYZ

Precision Lens Positioner, 2.0 in., 100 TPI XY, 80 TPI Z

$785.00
Product Series Overview
Precision Multi-Axis Lens Positioners
N/A
38.1 mm (M-

Model: M-LH-1.5A

Fixed Lens Mount, 1.5 in. (38.1 mm) Diameter, M4 Thread, A-LINE

$34.00
Product Series Overview
A-Line Fixed Lens Mounts
) LH-1.5A

Model: LH-1.5A

Fixed Lens Mount, 1.5 in. (38.1 mm) Diameter, 8-32 Thread, A-LINE

$34.00
Product Series Overview
A-Line Fixed Lens Mounts
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.

Resources

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