Contents Optical Part Design » Optical Lens » Optical Lens Parameters » BeamPrint page Beam This section provides information on the beam types available when designing an optical lens. This section contains the following topics:RadiiThe Radii beam type allows you to create spherical facets that ideally diffuse light.PrismThe Prism or prismatic lens spreads and redirects light in a specific direction.PyramidThis lens type allows you to generate pyramid-shaped lenses.FreeformThe Freeform lens is shaped according to target points or directions.FluteFlutes are shaped by the geometrical angle between tangents of the support.Step PillowWith the Step Pillow beam type, elements are shaped by specifying the area where the light should be sent in.Reflex ReflectorThe Reflex reflector is a lens meant to reflect light. « TargetRadii »