Specifications:
| Type | Achromatic Doublet Lenses | Material | Customized |
| Clear Aperture | >90% | Focal Length Tolerance | ±2% |
| Coating | R<0.5%@400-700nm or Custom | Diameter Tolerance | +0.0/-0.1mm |
| Thickness Tolerance | ±0.2mm | Centering | 3 arcmin |
| Irregularity | λ/4@632.8nm | Surface Quality | 40/20 S/D |
| Chamfer | 0.2mm x 45 degree |
Achromatic Doublet Lenses, using a pair of different glasses , correcting chromatic aberration caused by the variation of focal length with wavelength, have better performance to minimize spherical aberration in comparison with single lenses, and are able to be applied in the whole visible light region. This kind of lenses is probably the most economical choice of achieving quality white light illumination and imaging.
Hangzhou Shalom EO provides custom achromatic doublet lenses according to customer’s request.
