1. The Holographic Pancake Window TM
2. Image-forming apparatus;LaRussa;US Patent 3,940,203,1976
3. Collimation device of small size;Lacroix;French Patent 2,690,534,1993
4. Wide FOV Head Mounted Display using Hybrid Optics;Huxford,2004
5. Recent advances in multilayer polymeric interference reflector products