THORLABS 355440-A ASPHERIC LENS 350 – 700 nm AR COATING MOLDED GLASS COLLIMATE
Aspheric lenses focus or collimate light without introducing spherical aberration into the transmitted wavefront. For monochromatic sources, spherical aberration often prevents a single spherical lens from achieving diffraction-limited performance when focusing or collimating light.
Edmund #87-124 (87124) – Molded Aspheric Lens, 0.40 NA, 6.24mm FL, Uncoated
Molded Aspheric Lens. LightPath® Geltech™ Molded Aspheric Lenses are used to eliminate spherical aberration and improve focusing. and collimating accuracy in a variety of laser applications. Low NA aspheric lenses are designed to maintain beam.