Radial collimators are used to change diverging light or radiation that expands from a single point of origin. This is achieved by positioning vertical absorbing blades in circular fashion at a predetermined radial distance to said point of origin.

This can be crucial for instruments e.g. in spectroscopes which may have their detector array placed in circular way surrounding the sample (which here acts as the geometrical point of origin). The space between each blade can be designed to optimally work with one or more sensors at the end of that collimation channel. Moreover, background scattering can also be reduced quite drastically by the divergence reducing effect of said blades.

PANApp has made first strides in 3D-printing boronated plastic radial collimators for use by sample environment group. It is to be noted that although there has been some success already this is still in the development phase and shall be refined in 2023 and onward.