![]() To reduce the wavefront errors arising from the standard achromats the second surface of these aspherical achromats are fused with a molded polymer surface. The Aspherical achromatic lenses not only have superior color correction comparing to standard achromats, but also has very similar spherical aberration corrections to those of machined aspheres. However, the color and spherical aberration correction is only optimized over the wavelength regime of 400-700nm. These lenses can be used within the wavelength regime of 400-2000nm. This achromat is computer optimized to provide optimal color correction and the smallest RMS spot size close to the diffraction limit. The back surface has a molded aspheric polymer cap with a protective seal. The APAC12 Achromatic Aspherical Lens is a 425 to 675 nm antireflection coated (front surface), 0.49 inch (12.5 mm) diameter, N-LaK8 and N-SF57 achromatic doublet lens with an effective focal length of 14.0 mm.
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