1. Dual gyro mechanically coupled image motion compensator having non-linear damping means;Richards,1973
2. Improvements In Or Relating To Deformable Non-Round Membrane Assemblies;Stevens,2015
3. Variable power fluid lens;Wallace,1964
4. Zoom lens system having variable power element;Goosey,2007
5. Methods and System for Creating Focal Planes using an Alvarez Lens;Tekolste,2016