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Achromatic doublet lenses ("achromat") are designed to eliminate chromatic and spherical aberrations inherent in singlet lenses.  When used on-axis,  an achromatic lens focuses an parallel input beam to a perfect "point", limited only by the effects of diffraction. This performance can be achieved over a broadband of wavelength.   Achromatic lenses can be used to collimate and focus laser beams.  They can also be used for high-quality imaging on-axis.  However,  the off-axis performance is significantly worse than the on-axis performance.  If your application requires good optical performance off-axis as well as on-axis,  multi-element lenses such as our digital imaging lenses are recommended.

For some applications it is desirable to have a high-quality lens with a lower f/# (for example,  collimating a diode laser with large divergence angle).  This can be done by adding a matching aplanatic meniscus lens to a doublet lens.  An aplanatic meniscus lens will shorten the focal length of the doublet lens (thus, lowering the F-num) without introducing additional spherical aberrations.

The following is the listing of our standard achromatic lenses.  They are all designed to achieve a wave-front aberration <1/4 wavelength.  You can also use lens design wizards to design custom achromatic lenses. Achromatic elements have a Minimum Order Quantity (MOQ) ranging from 100 to 1,000 units.

General Specifications:

Parameter Value
Default unit mm
Material Cemented crown and flint glasses
Focal length tolerance +/-2%
Diameter tolerance +0, -0.15mm
Center thickness tolerance +/-0.25mm
Centration 3 arc min
Surface quality 40-20
Coating Single layer anti-reflection coating centered at 550nm

PN Description Diameter EFL BFL Tc Te Aplanatic Meniscus Volume Price
ACH003-009 Achromatic doublet lens, D=3, EFL=9 3 9 2.19 2.5 2.19   $34.10 (MOQ Range Applies) Request Volume Quote
ACH005-010 Achromatic doublet lens, D=5, EFL=10 5 10 8.56 2.76 2.22   $33.30 (MOQ Range Applies) Request Volume Quote
ACH005-015 Achromatic doublet lens, D=5, EFL=15 5 15 13.64 2.58 2.23   $33.30 (MOQ Range Applies) Request Volume Quote
ACH005-020 Achromatic doublet lens, D=5, EFL=20 5 20 18.6 2.64 2.37   $33.30 (MOQ Range Applies) Request Volume Quote
ACH003-012 Achromatic doublet lens, D=3, EFL=12 3 12 2.45 2.68 2.45   $34.10 (MOQ Range Applies) Request Volume Quote
ACH003-006 Achromatic doublet lens, D=3, EFL=6 3 6 2.67 3 2.67   $34.10 (MOQ Range Applies) Request Volume Quote
ACH006-025 Achromatic doublet lens, D=6.3, EFL=25 6.3 25 23.45 3.2 2.73 MNP006-048 $29.50 (MOQ Range Applies) Request Volume Quote
ACH006-030 Achromatic doublet lens, D=6.3, EFL=30 6.3 30 28.5 3.2 2.8   $29.50 (MOQ Range Applies) Request Volume Quote
ACH006-035 Achromatic doublet lens, D=6.3, EFL=35 6.3 35 33.59 3.2 2.86 MNP006-067 $29.50 (MOQ Range Applies) Request Volume Quote
ACH006-020 Achromatic doublet lens, D=6.3, EFL=20 6.3 20 18.23 3.6 3 MNP006-038 $29.50 (MOQ Range Applies) Request Volume Quote
ACH006-040 Achromatic doublet lens, D=6.3, EFL=40 6.3 40 38.46 3.3 3.01 MNP006-076 $29.50 (MOQ Range Applies) Request Volume Quote
ACH018-060 Achromatic doublet lens, D=18, EFL=60 18 60 57.57 5.2 3.73   $37.30 (MOQ Range Applies) Request Volume Quote
ACH008-016 Achromatic doublet lens, D=8, EFL=16 8 16 13.55 4.91 3.77   $30.10 (MOQ Range Applies) Request Volume Quote
ACH012-030 Achromatic doublet lens, D=12.5, EFL=30 12.5 30 27.19 5.33 3.88   $31.60 (MOQ Range Applies) Request Volume Quote
ACH012-040 Achromatic doublet lens, D=12.5, EFL=40 12.5 40 37.54 5.06 3.88 MNP012-075 $31.60 (MOQ Range Applies) Request Volume Quote
ACH012-045 Achromatic doublet lens, D=12.5, EFL=45 12.5 45 42.52 5 3.94 MNP012-085 $31.60 (MOQ Range Applies) Request Volume Quote
ACH005-007 Achromatic doublet lens, D=5, EFL=7.5 5 7.5 5.01 4.75 3.98   $33.30 (MOQ Range Applies) Request Volume Quote
ACH012-075 Achromatic doublet lens, D=12.5, EFL=75 12.5 75 72.35 4.6 4   $35 (MOQ Range Applies) Request Volume Quote
ACH012-050 Achromatic doublet lens, D=12.5, EFL=50 12.5 50 47.61 5 4.06 MNP012-094 $31.60 (MOQ Range Applies) Request Volume Quote
ACH012-025 Achromatic doublet lens, D=12, EFL=25 12 25 22.06 5.76 4.15   $31.40 (MOQ Range Applies) Request Volume Quote
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