Achromatic Lenses
An achromatic doublet is a closely spaced cemented combination of positive and negative elements with differing refractive indexes. These elements are chosen so that chromatic aberration is cancelled at two distinct and well-separated wavelengths typically selected to fall in the red and blue portions of the spectrum
Achromatic Lenses
Specifications: |
 |
| Material |
BK7，SF2，SF6 etc. |
| Design Wavelength |
480nm, 546.1nm, 643.8nm |
| Design Index |
1.5183 ±0.0005 |
| Diameter Tolerance |
+0.0, -0.15mm |
| Paraxial Focal Length |
±2% |
| Centration Tolerance |
3 arc minutes |
| Clear Aperture |
>85% |
| Surface Figure |
λ/4 @ 632.8nm |
| Surface Quality |
60-40 Scratch and Dig |
| Bevel |
0.25 mm x 45° |
List of Product Tables
| Part No. |
Focal Length (mm) |
Diameter (mm) |
Material |
Description |
| XLA-001 |
4.5 |
3.0 |
BK7/SF2 |
Standard |
| XLA-002 |
24.4 |
6..22 |
BK7/SF2 |
Standard |
| XLA-003 |
16.0 |
8.0 |
BAK4/SF10 |
Standard |
| XLA-004 |
25.0 |
8.5 |
SK11/SF5 |
Standard |
| XLA-005 |
30.0 |
11.5 |
BK7/SF2 |
Standard |
| XLA-006 |
22.0 |
12.7 |
BK7/SF2 |
Standard |
| XLA-007 |
250.0 |
12.7 |
BK7/SF2 |
Standard |
| XLA-008 |
140.0 |
17.0 |
BK7/SF2 |
Standard |
| XLA-009 |
163.0 |
17.0 |
BK7/SF2 |
Standard |
| XLA-010 |
48.0 |
20.0 |
BK7-SF2 |
Standard |
| XLA-011 |
125.0 |
25.4 |
BK7/SF2 |
Standard |
| XLA-012 |
120.0 |
30.0 |
BK7/SF2 |
Standard |
| XLA-013 |
140.0 |
38.0 |
BK7/SF2 |
Standard |
| XLA-014 |
430.0 |
40.0 |
BK7/SF2 |
Standard |
| XLA-015 |
250.0 |
44.0 |
BK7/SF2 |
Standard |
| XLA-016 |
120.0 |
50.0 |
BK7/SF2 |
Standard |
| XLA-017 |
600.0 |
75.0 |
BK7/SF2 |
Standard |
| XLA-018 |
430.0 |
83.0 |
BK7/SF2 |
Standard |
| XLA-019 |
200.0 |
104.0 |
BK7/SF10 |
Standard |
| XLA-020 |
800.0 |
120.0 |
BK7/SF10 |
Standard |
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Lenses
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