Compositions – Liquid crystal compositions
Reexamination Certificate
2007-02-13
2007-02-13
Wu, Shean C. (Department: 1756)
Compositions
Liquid crystal compositions
C252S299100, C252S299500, C349S086000, C349S088000, C349S092000
Reexamination Certificate
active
11332247
ABSTRACT:
The process described herein offers the optimizing of performance parameters of holograms, such as reducing scattering effects in a polymer-dispersed liquid crystal optical element. In the process, an interfacial tension agent is added to a polymer-dispersed liquid crystal material. The polymer-dispersed liquid crystal material has at least one acrylic acid monomer, at least one type of liquid crystal material, a photoinitiator dye, and a co-initiator. The polymer-dispersed liquid crystal material is subjected to a polymerization. The interfacial tension agent reduces the size of liquid crystal droplets formed within the polymer-dispersed liquid crystal optical element during polymerization.
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Brandelik Donna M.
Natarajan Lalgudi V.
Pogue Robert T.
Shepherd Christina K.
Sutherland Richard L.
Kilpatrick & Stockton LLP
Science Applications International Corporation
Wu Shean C.
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