E.i. Dupont De Nemours and Company

Andrew M Weber

Aleksander Beresniewicz

Paul James Martin

Torence J Trout

William John Gambogi, Jr

Robert George Melega

Steven Robert Mackara

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 multicolor reflective or transmission filters The elements can have one, two, three or more holographic recording film layers Each layer comprises at least first and second pixel volumes containing holographic mirrors and preferably third pixel volumes containing a holographic mirror.

Holographic Multicolor optical elements for use in liquid crystal

Broad band reflection holograms and process for producing broad band reflection holograms in photosensitive elements comprising photopolymer photosensitive layers are disclosed. These holograms may be used to form very bright display holograms, ultraviolet, visible and infrared rejection filters, and holographic security devices, as well as may be used in a wide variety of other applications.

Broad band reflection holograms and a dry process for making same

The present invention relates to color tuned holographic multicolor optical elements for use as multicolor transmission filters in liquid crystal displays and methods of making the elements. The element comprises at least first and second pixel volumes containing holographic mirrors and preferably third pixel volumes containing holographic mirrors. Each set of pixel volumes passes a different color wavelength band and reflects other color wavelength bands.

Color tuned holographic optical elements and methods of making and using

Holographic films contain a copolymer binder having the following formula:

Recording films with a high refractive index modulation

Holographic films are disclosed that contain a binder having the following formula:

Recording medium with inproved adhesion to glass

Film speed of holographic photopolymer film containing polyvinyl acetate binder and an ethylenically unsaturated monomer is improved by including acrylic anhydride in the film.

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Wilmington, DE, United States of America

Andrew M Weber