Generally , all air to air missile lenses are acrylic. If a mach 2 speed aircraft does not escape from the view of missile , I think it is good enough. I am not good with softwares but if you can manage to use a lens design software and create your weird one element lens , you can order it from 3D printing shops with using acrylic or epoxy.
Plastics are able to mass manufacture and require micro molds. Its a very tough problem and very expensive.
I found a easy way to create an acrylic lens , it is cutting with lasers or water jet to make multi element non spherical cylindrical lenses.
Its easy but designing is very difficult for me.
Last edited by Mustafa Umut Sarac; 05-13-2013 at 11:08 AM. Click to view previous post history.