Profile: Harold Johnson Optical Labs, Inc. is a manufacturer of spherical and cylindrical lenses, domes, prisms, mirrors, and multi-element assemblies in optical laboratories. Our product line includes spherical & cylindrical optics, prisms, plano optics and assemblies. Our spherical optics feature size ranging from 2 mm to 457 mm, with a lens diameter to +/-0.025 mm. We also provide achromatic doublets, mirrors, achromatic triplets, relay, eyepieces and singlets.