Contents Optical Part Design » TIR LensPrint page TIR Lens The TIR (Total Internal Reflection) Lens allows you to create a lens that collimates rays from a punctual source. This section contains the following topics:TIR Lens OverviewThe Total Internal Reflection (TIR) lens is a cone shaped optical component designed to collimate light.Understanding the Parameters of a TIR LensThis page describes the parameters to set when creating a TIR Lens.Creating a TIR LensThis page shows how to create a Total Internal Reflection lens. « Manufacturing ParametersTIR Lens Overview »