The opinion in support of the decision being entered today was not written
for publication and is not binding precedent of the Board.
Paper No. 23
UNITED STATES PATENT AND TRADEMARK OFFICE
____________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
____________
Ex parte HUGO J. CORNELISSEN and
ADRIANUS J.S.M. DE VAAN
____________
Appeal No. 2001-1116
Application No. 09/070,222
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ON BRIEF
____________
Before HAIRSTON, KRASS, and JERRY SMITH, Administrative Patent Judges.
HAIRSTON, Administrative Patent Judge.
DECISION ON APPEAL
This is an appeal from the final rejection of claims 1 through 5.
The disclosed invention relates to an image projection system wherein a quarter-wave plate
is located between each reflecting image display panel and a polarizing beam splitter.
Claim 1 is the only independent claim on appeal, and it reads as follows:
1. An image projection system comprising an illumination system with a light source for
supplying an illumination beam, a modulation system with at least one reflecting image display
panel for modulating this light beam in conformity with image information to be projected, the
display panel having a layer of liquid crystalline material and having pixels with reflective portions,
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