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Production of Polymer Lenses Using Injection Moulding

The precision of injection moulded high-class plastics products is the crucial factor. Especially the injection moulding of thick-walled polymer optics requires sophisticated measuring techniques for the control of the quality achieved and the analysis of the replication process. In particular the measuring range and the accuracy of the measuring instruments in combination with the sometimes large deviations between polymer geometry and ideal contour must be taken into account. The future target is the production of highly accurate polymer optics with an excellent process control. The paper discusses the use of an optical contact-free measuring technique for the analysis of injection moulded optical lenses.