Matches 1 - 8 out of 8
Match Document Document Title
7094502 Methods for transferring holographic images into metal surfaces  
A method for impressing holographic images or holograms in the surface of metal objects such as aluminum cans, sheet metal or metal foil. The surfaces of metal shims and print rolls bearing...
6021106 Molding diffractive optical elements  
A method of fabricating a diffractive optical element includes the steps of: etching a negative of a desired multi-level diffraction pattern onto a molding surface of a quartz master element using...
6006415 Techniques for transferring holograms into metal surfaces  
A method for impressing holographic images or holograms in the surface of metal objects such as aluminum cans. The surfaces of metal shims and print rolls bearing holograms are hardened as by...
5932150 Replication of diffraction images in oriented films  
The present invention provides a method and apparatus for impressing a diffraction image into an oriented polymeric film wherein, after orientation of the film, the temperature of the film is...
5881444 Techniques for transferring holograms into metal surfaces  
A method for impressing holographic images or holograms in the surface of metal objects such as aluminum cans. The surfaces of metal shims and print rolls bearing holograms are hardened as by...
5825741 Optical disc player with molded diffractive optical elements  
A method of fabricating a diffractive optical element includes the steps of: etching a negative of a desired multi-level diffraction pattern onto a molding surface of a quartz master element using...
5728324 Molding diffractive optical elements  
A method of fabricating a diffractive optical element includes the steps of: etching a negative of a desired multi-level diffraction pattern onto a molding surface of a quartz master element using...
5538674 Method for reproducing holograms, kinoforms, diffractive optical elements and microstructures  
A method of molding a plastic element having a microstructure embedded therein includes the steps of providing a master having a microstructure therein; casting a liquid surface coating over said...
Matches 1 - 8 out of 8