Liquid crystal cells – elements and systems – Liquid crystal system – Projector including liquid crystal cell
Reexamination Certificate
2005-05-03
2005-05-03
Chowdhury, Tarifur R. (Department: 2871)
Liquid crystal cells, elements and systems
Liquid crystal system
Projector including liquid crystal cell
C349S196000, C349S161000
Reexamination Certificate
active
06888582
ABSTRACT:
An optical shifter includes at least one liquid crystal cell and a birefringent element. The liquid crystal cell has a first surface to receive light thereon and a second surface to pass the light therethrough and selectively changes polarization states of the light according to a voltage applied thereto. The birefringent element receives the light that has gone out of the liquid crystal cell through the second surface thereof, and selectively shifts the optical path of the light depending on the polarization state of the light. The optical shifter controls the temperature of the liquid crystal cell by way of at least one heat transfer member, through which heat can be transferred to/from the first surface and/or the second surface of the liquid crystal cell.
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Yasuda et al., Asia Display (1995) Japan, pp. 79-82.
Shibatani Takashi
Tominaga Kanehiro
Birch Stewart Kolasch & Birch, LLP.
Chowdhury Tarifur R.
Qi Mike
Sharp Kabushiki Kaisha
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