issue date：2016-3-31 15:35:44 visit frequency：5852
An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration. Achromatic lenses are corrected to bring two wavelengths (typically red and blue) into focus in the same plane.
The most common type of achromat is the achromatic doublet, which is composed of two individual lenses made from glasses with different amounts of dispersion. Typically, one element is a negative (concave) element made out of flint glass such as F2, which has relatively high dispersion, and the other is a positive (convex) element made of crown glass such as BK7, which has lower dispersion. The lens elements are mounted next to each other, often cemented together, and shaped so that the chromatic aberration of one is counterbalanced by that of the other.
Achromatic Lenses are used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Achromatic Lenses are ideal for a range of applications, including fluorescence microscopy, image relay, inspection, or spectroscopy. XF Photonics Co.,Ltd provide a large variety kinds of specifications according to clients’ request or Personalized customization for Achromatic Lenses. Our Achromatic Lenses are available in a range of coating or substrate options. Anti-reflection coatings range from the Ultraviolet (UV) to the Infrared (IR).
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General precision |
High precision |
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Material |
According to different designs |
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Diameter |
2 to 200mm or customize |
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Dimension tolerance |
+0.0,-0.2mm |
+0.0, -0.01mm |
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tc tolerance |
±0.2mm |
±0.02mm |
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Clear aperture |
>85% |
>95% |
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Surface quality |
60-40 |
20-10 |
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Flatness |
＜1.5λ@632.8nm |
＜λ/4 @632.8nm |
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Centration |
3 arc min |
30 arc sec |
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Coating |
Uncoated,AR,HR,PR Coating,etc |
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ROHS |
Compliant |
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The followings are available in stocks or customize per request specification:
Negative Acromatec Lenses
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Part No. |
f(mm) |
F(mm) |
R1(mm) |
R2=R3(mm) |
R4(mm) |
t c1(mm) |
t c2(mm) |
fb(mm) |
Lens A |
Lens B |
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ACL201 |
-25.0 |
12.7 |
-15.6 |
13.09 |
44.16 |
3.0 |
2.67 |
-27.5 |
N-BK7 |
F2 |
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ACL201 |
-40.0 |
12.7 |
-24.45 |
17.97 |
66.6 |
3.0 |
2.34 |
-42.5 |
N-BK7 |
F2 |
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ACL203 |
-50.0 |
25.4 |
-31.19 |
24.89 |
85.31 |
3.0 |
4.22 |
-53.3 |
N-BK7 |
F2 |
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Part No. |
f(mm) |
F(mm) |
R1(mm) |
R2=R3(mm) |
R4(mm) |
t c1(mm) |
t c1(mm) |
fb(mm) |
Lens A |
Lens B |
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ACL101 |
15.0 |
6.0 |
8.831 |
-6.546 |
-19.77 |
2.71 |
1 |
13.066 |
N-BK7 |
N-SF5 |
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ACL102 |
20.0 |
6.0 |
12.356 |
-8.511 |
-24.38 |
2.6 |
1 |
18.288 |
N-BK7 |
N-SF5 |
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ACL103 |
25.0 |
6.0 |
15.704 |
-10.666 |
-29.99 |
2.3 |
1 |
23.455 |
N-BK7 |
N-SF5 |
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ACL104 |
30.0 |
6.0 |
18.88 |
-12.942 |
-36.48 |
1.9 |
1 |
28.695 |
N-BK7 |
N-SF5 |
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ACL105 |
25.0 |
8.0 |
15.596 |
-10.814 |
-30.48 |
2.9 |
1 |
23.125 |
N-BK7 |
N-SF5 |
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ACL106 |
30.0 |
8.0 |
18.88 |
-12.882 |
-36.22 |
2.7 |
1 |
28.277 |
N-BK7 |
N-SF5 |
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ACL107 |
20.0 |
10.0 |
12.3 |
-9.02 |
-25.23 |
3.6 |
1 |
17.625 |
N-BK7 |
N-SF5 |
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ACL108 |
25.0 |
12.0 |
15.346 |
-11.35 |
-31.92 |
4.2 |
1.3 |
22.286 |
N-BK7 |
N-SF5 |
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ACL109 |
25.0 |
12.7 |
15.596 |
-11.402 |
-31.05 |
4.3 |
1.3 |
22.251 |
N-BK7 |
N-SF5 |
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ACL110 |
30.0 |
12.7 |
18.535 |
-13.49 |
-37.84 |
4 |
1.3 |
27.36 |
N-BK7 |
N-SF5 |
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ACL111 |
40.0 |
12.7 |
25.23 |
-17.539 |
-48.75 |
3.4 |
1.3 |
37.778 |
N-BK7 |
N-SF5 |
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ACL112 |
50.0 |
12.7 |
31.26 |
-21.93 |
-62.37 |
3.1 |
1.3 |
47.992 |
N-BK7 |
N-SF5 |
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ACL113 |
60.0 |
12.7 |
37.33 |
-26.42 |
-75.86 |
2.8 |
1.3 |
58.127 |
N-BK7 |
N-SF5 |
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ACL113 |
75.0 |
12.7 |
46.77 |
-32.96 |
-94.62 |
2.6 |
1.3 |
73.227 |
N-BK7 |
N-SF5 |
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ACL114 |
65.0 |
20.0 |
40.09 |
-29.58 |
-83.59 |
6.3 |
2 |
60.868 |
N-BK7 |
N-SF5 |
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ACL115 |
60.0 |
25.4 |
37.33 |
-27.16 |
-75.86 |
7 |
2 |
55.565 |
N-BK7 |
N-SF5 |
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ACL116 |
120.0 |
25.4 |
73.28 |
-54.33 |
-159.96 |
4.2 |
2 |
117.103 |
N-BK7 |
N-SF5 |
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