Optical recognition device and optical recognition display...

Optical reflector and manufacturing method thereof

Optical security component

Optical sensor based on surface electromagnetic wave...

Optical structural element, method for the production of a layer

Optical substrate and antireflective film

Optical switching device

Optical system for eliminating ghost image in wide wavelength ba

Optical system with anti-reflection coating

Optical thin film for optical element

Optical-interference type reflective panel and method for...

Optical-thin-film material, process for its production, and...

Optically variable element comprising a sequence of...

Optically variable element with partial transparent element

Optically variable security devices

Overcoat method and apparatus for ZRO.sub.2 mirror stacks

Particle size variable reactor

PDP filter and manufacturing method thereof

Plastic film and image display unit

Plastic lens and method of forming an anti-reflecting layer on a