Spherical lens element DBT series

doubletoptical glassachromatic

Achromatic Lenses are used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Achromatic Lenses are ideal for a range of applications, including fluorescence microscopy, image relay, inspection, or spectroscopy. An Achromatic Lens, which is often designed by either cementing two elements together or mounting the two elements in a housing, creates smaller spot sizes than comparable singlet lenses. Specifications: Material Optical Glasses Design Wavelength 480, 546.1, 643.8nm Dimension Tolerance +0/-0.2mm Thickness Tolerance ±0.2mm Surface Quality 60/40 scratch and dig Power(fringe@633nm) 3 Irregularity(fringe@633nm) 0.5 Centration 90% Chamfer Protective <0.5mmx45deg Coating Single layer MgF2 coating @550nm