FIG. 01.01
Lenses · Type 10 / 11
Negative Achromatic Lenses
A diverging lens corrected for colour.
- Part
- Negative Achromatic Lens
- Family
- Lenses
- Fig.
- 01.10
- Coating
- In-house
- Quality
- ISO 9001
- Made in
- Roorkee
Description
A negative achromatic lens combines two elements made from glasses with different dispersion, with an overall negative focal length. It diverges light while correcting chromatic and spherical aberration. Typical uses are beam expanders and extending the focal length of an imaging system without adding colour fringing.
Specify yours.
Start from a catalogue part or from your own drawing, in the material, coating and tolerance grade you need.
AMaterial
- Optical glass (BK7-class crown, flint)
- Fused silica / fused quartz
- Sapphire
- CaF₂
- BaF₂
- MgF₂
- Silicon (Si)
- Germanium (Ge)
- Zinc sulphide (ZnS)
- Zinc selenide (ZnSe)
- Nd:YAG crystal
- Other UV and IR materials
BCoatingIn-house
- ARAnti-reflection
- Al · AgMetallic mirror
- HRDielectric mirror
- Filter
- Beam-splitter
- Polarizing
CTolerance grade
| Parameter | Commercial | Precision |
|---|---|---|
| Thickness | ±0.1 mm | ±0.01 mm |
| Radius | 1% | 0.5% |
| Refractive index | 0.001 | 0.0001 |
| Abbe (V-number) | 1% | 0.1% |
| Centration | 3 arc-min | 30 arc-sec |
| Tilt / wedge | 1 arc-min | 10 arc-sec |
| Surface irregularity | 1 fringe | λ/4 (0.25 fringe) |
| Surface quality (scratch-dig) | 60-40 | 10-5 |
DMade to your drawing
Send your drawing.
A drawing or a short spec is enough. We quote to it.
- Dimensions and tolerances
- Material and coating
- Surface quality
- Quantity
More lenses.
FIG. 01.02
Double-Convex Lenses
FIG. 01.03
Plano-Concave Lenses
FIG. 01.04
Double-Concave Lenses
FIG. 01.05
Positive Meniscus Lenses
FIG. 01.06
Negative Meniscus Lenses
FIG. 01.07
Plano-Convex Cylindrical Lenses
FIG. 01.08
Plano-Concave Cylindrical Lenses
FIG. 01.09
Positive Achromatic Lenses
FIG. 01.11
Cylindrical Achromatic Lenses
Quote for negative achromatic lenses.
Tell us the size, material, coating and quantity, or send a drawing. We reply with a quote.