mpo100MPO100 tool for 3D lithography and 3D microprinting Heidelberg Instruments Mikrotechnik and Multiphoton Optics have introduced the MPO 100, multi-user tool for 3D lithography and 3DMPO 100. 3D LITHOGRAPHY AND 3D MICROPRINTING. MPO 100 The MPO 100 is a Two-Photon Polymerization (TPP) multi-user tool for 3D Lithography