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Negative Achromatic Lens
It is achromatic lens having a negative focal length. By setting the concave one bonding two lenses wavelength dispersion of the refractive index is different, can be smaller than the spherical single lens and spherical aberration and chromatic aberration.
It is optimized focal length shift is small in the visible light range, the aberration is minimized.
It can be the beam expander of Galileo type in combination with achromatic lens with a focal length of the positive.
| Model | Diameter φD(mm) | Focal length f(mm) | Center thickness tc(mm) | Edge thickness te(mm) | Back focal length fb(mm) | Centration(′) | VS | Unit Price | Date | Cart | |||||||||||||
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DL-25-50NM |
25 | -49.94 | 6.7 | 9.3 | -53.09 | < 3 |
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Negative Achromatic Lens /DL-25-50NM
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DL-25-100NM |
25 | -99.94 | 4.6 | 5.9 | -102.32 | < 3 |
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Negative Achromatic Lens /DL-25-100NM
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