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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
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
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
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
ACH012-060 Achromatic doublet lens, D=12.5, EFL=60 12.5 60 57.59 5 4.21   $35 (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
ACH014-021 Achromatic doublet lens, D=14, EFL=21 14 21 16.38 8.09 5.36   $35.60 (MOQ Range Applies) Request Volume Quote
ACH015-050 Achromatic doublet lens, D=15, EFL=50 15 50 46.17 6.5 5.12 MNP015-092 $36 (MOQ Range Applies) Request Volume Quote
ACH015-075 Achromatic doublet lens, D=15, EFL=75 15 75 70.71 7.5 6.59   $36 (MOQ Range Applies) Request Volume Quote
ACH017-031 Achromatic doublet lens, D=17.5, EFL=31 17.5 31 26.57 8.85 6.05   $37.30 (MOQ Range Applies) Request Volume Quote
ACH018-050 Achromatic doublet lens, D=18, EFL=50 18 50 46.88 5.96 4.22   $37.30 (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
ACH018-080 Achromatic doublet lens, D=18, EFL=80 18 80 76.52 7.5 6.27 MNP018-150 $37.30 (MOQ Range Applies) Request Volume Quote
ACH025-100 Achromatic doublet lens, D=25, EFL=100 25 100 95.92 8.5 6.61 MNP025-187 $42.90 (MOQ Range Applies) Request Volume Quote
ACH025-125 Achromatic doublet lens, D=25, EFL=125 25 125 120.89 8.4 6.9 MNP025-235 $42.90 (MOQ Range Applies) Request Volume Quote
ACH025-150 Achromatic doublet lens, D=25, EFL=150 25 150 146.1 7.9 6.6   $42.90 (MOQ Range Applies) Request Volume Quote
ACH025-175 Achromatic doublet lens, D=25, EFL=175 25 175 170.84 9 7.9 MNP025-332 $42.90 (MOQ Range Applies) Request Volume Quote
ACH025-200 Achromatic doublet lens, D=25, EFL=200 25 200 194.14 12.5 11.56 MNP025-377 $42.90 (MOQ Range Applies) Request Volume Quote
ACH025-075 Achromatic doublet lens, D=25, EFL=75 25 75 70.39 9.5 6.97 MNP025-140 $42.90 (MOQ Range Applies) Request Volume Quote
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