Axial displacements 1 Compression molding 1 Deformation 1 Elastomers 1 Factor analysis 1 Fixed-factor Fresnel lens 1 Grey relational analysis 1 Injection molding 1 Injection-compression moldings 1 Optical axial displacement 1 Optical instrument lenses 1 Optical path difference 1 Optical refraction 1 Optical- 1 Optimisations 1 Plastic products 1 Solid modelling 1 Taguchi method 1 Taguchi methods 1 Taguchi's methods 1 grey relational analysis 1 injection-compression molding 1 optical axial displacement 1 optical path difference 1