Liquid crystal cells – elements and systems – Liquid crystal optical element – Beam dividing switch formed from liquid crystal cell
Reexamination Certificate
2006-01-31
2006-01-31
Nguyen, Dung T. (Department: 2871)
Liquid crystal cells, elements and systems
Liquid crystal optical element
Beam dividing switch formed from liquid crystal cell
C349S061000, C349S117000, C349S176000, C349S197000
Reexamination Certificate
active
06992749
ABSTRACT:
Provided herein is a logic tree for steering electromagnetic energy. The logic tree includes a plurality of stages. The first stage includes a branch for directing energy to a similar branch in each succeeding stage. Each stages contains 2n−1branches, where n is the stage number. In particular embodiments, each branch includes an active element for directing electromagnetic energy into one of a first and a second paths, and a passive element disposed in the second path.
REFERENCES:
patent: 3566172 (1971-02-01), Taylor et al.
patent: 5459591 (1995-10-01), Faris
Duong Tai
Nguyen Dung T.
Reveo Inc.
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