Liquid crystal cells – elements and systems – Liquid crystal system – Projector including liquid crystal cell
Reexamination Certificate
2005-04-27
2009-11-10
Caley, Michael H (Department: 2871)
Liquid crystal cells, elements and systems
Liquid crystal system
Projector including liquid crystal cell
C349S005000, C353S033000
Reexamination Certificate
active
07616266
ABSTRACT:
A liquid crystal projection system has a dichroic mirror, a reflecting prism, a first and a second polarizing component, a dichroic component, a modulating device, and a projection lens. The dichroic mirror splits a polarized light source into dual primary color lights and a single primary color light. The reflecting prism receives the single primary color light and reflects it. The first and second polarizing components polarize the dual primary color lights and the single primary color light, respectively. The dichroic component is disposed beside the first polarizing component, and splits the dual primary color lights. The modulating device is disposed beside the second polarizing component and the dichroic component, and modulates the dual and single primary color lights into the other polarization and then reflects them. The projection lens is disposed beside the first polarizing component, and project the output light beam to a screen.
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patent: 6827452 (2004-12-01), Tzong et al.
patent: 7044607 (2006-05-01), Ouchi et al.
patent: 2003/0030913 (2003-02-01), Park et al.
patent: 556041 (2003-10-01), None
patent: 556041 (2003-10-01), None
Hsiung Chien-Chih
Tzong Ruey-Yau
Caley Michael H
Cinetron Technology Inc.
Rosenberg , Klein & Lee
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