Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-07-18
2006-07-18
Schechter, Andrew (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S086000, C349S088000, C349S092000, C349S093000, C349S094000, C349S200000
Reexamination Certificate
active
07079203
ABSTRACT:
Inhomogeneous concentrated polymer network with approximately 90° twisted nematic liquid crystal (TN-LC) is used for fabricating lens and prisms. For forming a positive lens, the approximately 90° TN-LC polymer network concentration can gradually decrease from the center to the side edges. For forming a negative lens, the approximately 90° TN-LC polymer network concentration can gradually increase from the center to the side edges. The lens can be created by ultra violet (UV) light exposure to patterned photo masks. The lens can be tuned by applying voltage above the threshold voltage to the polymer network. The inhomogeneous 90° TN-LC polymer network can also be used in Fresnel lens and prisms. Applications of the invention can be used for micro lens, array, optical communication, micro-optics, adaptive optics and beam steering.
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Huang Yuhua
Ren Hongwen
Wu Shin-Tson
Zhu Xinyu
Chien Lucy
Law Offices of Brian S. Steinberger , P.A.
Research Foundation of the University of Central Florida, Inc.
Schechter Andrew
Steinberger Brian S.
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