Negative Achromatic Lens 25mm Diameter -49.94 Focal Length
DL-25-50NM
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.
◦It can be the beam expander of Galileo type in combination with achromatic lens with a focal length of the positive.
| Name | Negative Achromatic Lens 25mm Diameter -49.94 Focal Length |
|---|---|
| Weight | 0.0050kgs |
| Standard Coatings Available | No |
| Guide |
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| Remark | - |
| Attention |
|
| Image Label | Negative Achromatic Lens 25mm Diameter -49.94 Focal Length |
| Diameter φD | 25mm |
| Focal length | −49.94mm |
| Material | N-BAF10, N-SF10 |
| Design wavelength | 486.1nm, 546.1nm, 656.3nm |
| Coating | Antireflection coating |
| Cement | Ultraviolet Hardened Adhesive |
| Laser Damage Threshold | 0.3J/cm2 |
| Surface Quality (Scratch-Dig) | 40-20 |
| Diameter φD | φ25mm |
| Focal length f | −49.94mm |
| Edge thickness te | 9.3ｍm |
| Center thickness tc | 6.7ｍm |
| Back focal length fb | −53.09ｍm |
| Centration | ＜3′ |
In stock
SKU
DL-25-50NM
€84.90
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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.
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