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6709790 Method and apparatus for generating periodic structures in substrates by synthetic wavelength holograph exposure  
A substrate surface 10 having a photo-sensitive material surface thereon is simultaneously exposed to four plane waves of light at angles of incidence θ, −θ, φ and −φ subtending from the...
5930011 Holographic Multicolor optical elements for use in liquid crystal displays and methods of making the elements  
The present invention relates to holographic multicolor optical elements for use as multicolor filters in liquid crystal displays and methods of making the elements. The elements can be used as...
5672448 Multi-exposure system for hologram  
A hologram forming system for forming holograms on multiple exposures is provided. In this system, a holographic recording medium is exposed to light beams at least twice at incident angles...
Matches 1 - 3 out of 3