DAP type liquid crystal device with cholesteric liquid crystal b

Data carrier having an optically variable element and methods fo

Data carrier having an optically variable element and...

Data carrier having an optically variable element and...

Data carrier with an optically variable element

Data read/write device for holographic WORM and method thereof

Data system for storing holographic media

Decorative film, carton, and method of making

Deflector system which produces dual, oppositely directed scanni

Deformed helix ferroelectric liquid crystal display device and m

Deposited multi-layer device with a plastic substrate having an

Deposition of photosensitive media for digital hologram...

Device and method for recording an interference pattern in a...

Device and method for reducing the observability of a defective

Device comprising a color filter and top coat

Device exhibiting photo-induced dichroism for adaptive...

Device for concentrating optical radiation

Device for forming images on a large surface and simulator equip

Device for holding liquid crystal display panel

Device for improving the contrast of a liquid crystal screen and