Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2007-06-26
2007-06-26
Perkey, W. B. (Department: 2851)
Optics: image projectors
Polarizer or interference filter
C353S029000, C353S122000, C359S454000
Reexamination Certificate
active
10884843
ABSTRACT:
A projection system is provided. The projection system comprises a projector for producing a polarized light for projecting an image and a projection screen on which the image projected by the projector is visualized. The polarization plane of the polarized light and the polarization plane of the polarizing means are parallel. The polarizing means comprises a film formed by rodlike supramolecules including at least one polycyclic organic compound with conjugated π-systems, whereby the 40% viewing angle transmittance iso-line of the polarizing means of the screen has an aspect ratio of not less than 2.
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Nitto Denko Corporation
Perkey W. B.
Sever Andrew
Westerman, Hattori, Daniels & Adrian , LLP.
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