Seamless holographic embossing substrate produced by laser...

Secure document, system for making same and system for...

Secure holographic images on paper

Secure holographic images on tissue

Security device

Security element and method for producing a security element

Security marking process and material provided with security...

Segmented image holographic disks

Seismic holography

Shift tolerant lens optimized for phase conjugating...

Special image reproducing and observing device

Stereoscopic display apparatus

Stereoscopic display apparatus and method

Stereoscopic display apparatus and method

Stereoscopic display method and apparatus

Stereoscopic display method of hologram and its forming...

Stereoscopic display method of horogram and its forming...

Surface relief grating image machining process and product

Surface relief hologram with a high efficiency during...

Switchable holographic gratings