178772 ⎘
Writing means other than actinic light wave Mechanical means, e.g. diamond tool
Optically variable film, apparatus and method for making the same
#2Optically variable film, apparatus and method for making the same
#3Holographic projection real-time 3D display system and method
#4Hologram appearing package image
#5Structured diamond tool made by focused ion beam nanomachining
#6Optical device and methods of manufacture