Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2007-10-02
2007-10-02
Qi, Mike (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S005000, C349S084000
Reexamination Certificate
active
10496802
ABSTRACT:
The invention provides an image shifting device including at least one image shifting part for periodically shifting the position of an optical axis. The image shifting part includes a liquid crystal device10for switching a polarization direction of light between two orthogonal directions in accordance with High/Low level of an applied voltage, and a birefringent device11having different refractive indexes depending upon the polarization direction of the light. The liquid crystal device10and the birefringent device11are disposed to transmit light in this order. A liquid crystal layer included in the liquid crystal device10is made of a TN liquid crystal layer that satisfies a relationship formula of 0.25<d/p<1, wherein a natural pitch length is indicated by p and a cell gap is indicated by d, and is disposed to be twisted at 90° within the liquid crystal cell.
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Kume Yasuhiro
Kurihara Takashi
Nakanishi Hiroshi
Tamai Kazuhiko
Qi Mike
Sharp Kabushiki Kaisha
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