optical Component:Diaphragms Speculum lens, Sphere lens, Brewster Window, Plane Waveplate, Plane Mirror, Plano Filter, Plane Windows, Attenuance Filter, Plane Attenuator, Curved Surface Mirror, Clindrical lens, Prisms, Ellipsoidal Mirror, Spherical lens, Infared ( IR ) Filter, Axicon lens, Aspherical lens, Aspherical Metal lenses, Aspherical Mirror, Spherical Mirror, Ir lenses, Extender / TeLeconverter lenses, Field lenses, Terahertz lenses, Beam Expander, Shot Wave Infrared ( Swir )lenses, Uv lenses, TeLecentric Field lenses, Prime Athermalized lens, Continuous Zoom lens.