Positive imaging lenses
Achromatic lenses are computer optimized to correct for on-axis spherical and chromatic aberrations. They consist of two optical components of different refractive index cemented together to form an achromatic doublet. These lenses are useful in axial imaging applications where a small spot size is required and for broadband imaging covering the visible spectrum. They are supplied uncoated but many types of anti-reflection coating may be applied on request.
| Material: | Please call |
| Surface Flatness: | < λ / 4 @ 633 nm |
| Surface Quality: | <40/20 (both sides) |
| Centration Error: | <3 arcmin |
| Focal Length Tolerance: | < ± 1.0% |
| Diameter Tolerance: | < + 0.00 / – 0.20 mm |
| Thickness Tolerance: | < ± 0.25 mm |
| Clear Aperture: | >85% of diameter |
Achromatic (Doublet) Lens (PDA)
| Dimension | 0.25" dia, 0.5" dia, 0.75" dia, 1.0" dia |
|---|---|
| Effective Focal Length | 010 mm @ 633nm, 015 mm @ 633nm, 020 mm @ 633nm, 025 mm @ 633nm, 030 mm @ 633nm, 040 mm @ 633nm, 050 mm @ 633nm, 060 mm @ 633nm, 075 mm @ 633nm, 100 mm @ 633nm, 125 mm @ 633nm, 150 mm @ 633nm, 175 mm @ 633nm, 200 mm @ 633nm, 250 mm @ 633nm, 300 mm @ 633nm, 500 mm @ 633nm |
Bi-convex Lenses (BCX) 
