Edmund Optics (EO) has expanded its selection of Techspec MgF2 coated achromatic lenses. Consisting of two optical components cemented together to form an achromatic doublet, these high performance lenses include fast achromatic lenses and micro achromats. The versatile lenses are computer-optimised to correct for on-axis spherical and chromatic aberrations and offer a wide range of optical solutions for polychromatic illumination and imaging needs.
Techspec fast achromatic lenses are designed to produce a small focused spot size and superior images without decreasing the clear aperture and offer improved chromatic focal shift. Featuring F/1 designs, these lenses have been optimally designed to minimise chromatic and spherical aberration for excellent focused spots at short working distances. Fast achromatic lenses are available with a single layer MgF2 coating in diameters ranging from 9mm to 25mm. Other designs and coating options are also available. EO's fast achromatic lenses are ideal for many laser focusing applications.
Techspec micro achromats are available in diameters ranging from 1mm to 5mm in focal lengths from 1.5mm to 20mm. These lenses are available with a single layer MgF2 coating or a broadband multi-layer coating for the visible spectrum. Micro achromatic lenses are ideal for space constrained imaging applications such as borescopes and medical imaging. Achromatic doublets are much better than simple lenses for multi-colour imaging as the two elements composing the doublet lens are paired together for their ability to correct the colour separation inherent in glass. This is an excellent, cost-effective measure to eliminate chromatic aberrations, making them the ideal choice for a variety of optical applications.