https://www.linkedin.com/in/paul-tolley-7449316/
U.S. Patent Lens Elements from Single Point Diamond Turned Thermoplastic resins Patent issuer and number us 7,413,689 B2 Patent description A methodology of producing High Recfractive Diamond turned (HRDT) optics from poly etherimide and polyethersulfone materials.
http://rbj.net/2008/12/12/syntec-optics-gm-tapped-for-ceo-of-infotonics-center/
http://rbj.net/2008/10/01/syntec-enhances-manufacturing-capacity/
https://www.send2press.com/wire/2008-09-0930-002/
https://www.syntecoptics.com/downloads/article2003oct.pdf
http://www.rrpc-y.org/news/Nov_07NL.htm