Thorlabs' achromatic lenses cover the 240 - 410 nm, 400 - 700 nm, 650 - 1050 nm, 1050 - 1620 nm, 3 - 5 µm, and 8 - 12 µm wavelength ranges. Our achromatic lenses are offered mounted, unmounted, and in matched pairs. We offer achromatic doublets, cylindrical achromatic doublets, and air-spaced achromatic doublets, as well as achromatic triplets that allow for maximum aberration control.