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Updated: Aug 13, 2026
A Soft Tooling Process Chain for Injection Molding of a 3D Component with Micro Pillars
Published on: August 4, 2018
Study of the injection molding of a polarizing beam splitter
Edson Jose de Carvalho1, Edmundo da Silva Braga, Lucila H Cescato
1Departamento de Eletrônica e Microeletrônica-Faculdade de Engenharia Elétrica e de Computação-Universidade Estadual de Campinas, C.P. 6101, 13083-970 Campinas, Brasil.
Abstract:
We describe the replication of a relief grating that behaves like a polarizing beam splitter by injection molding. Measurements of the grating master, nickel shim, and replica, performed by atomic force microscopy, allow establishing a limit for the injection molding technique (currently used in CD fabrication) to aspect ratios of approximately 0.15. Although this limit strongly reduces the diffraction efficiency of the elements as well as their polarizing properties, extinction ratios of approximately 10:1 were measured for the replicas in a large range of wavelengths.
