52.4: New, High Performance, Durable Polarizers for Projection Displays
Clark Pentico
Advanced Digital Optics, Inc., Westlake Village, California,
USA
Eric Gardner, Douglas Hansen, Ray Perkins
Moxtek, Orem, Utah, USA
ABSTRACT
Wire-grid polarizers are now available for broadband
visible
applications. This type of polarizer is very attractive
for
projection display applications because of its high
efficiency, high
contrast, and extreme temperature and flux tolerance.
However,
using wire-grid polarizers as drop-in replacements
in existing
architectures, significantly limits the possible
applications of this
new polarizer type. As with conventional polarizers,
wire-grid
polarizers come in a sheet format, but they reflect
one
polarization rather than absorb it. Therefore, care
must be taken
in the system design to control this reflected light.
Other
significant design issues will also be highlighted
in this paper.
Applied Digital Optics, Inc. and MOXTEK will discuss
design
issues concerning the use of ProFlux™ wire-grid polarizers
in the
illumination stages for projection, as well as other
suitable
applications. Conceptual designs will be presented.
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52.3: An Improved Polarizing Beamsplitter LCOS Projection Display Based
on Wire-Grid Polarizers
Stephen Arnold
Lightwave Enterprises Inc., West Henrietta, NY, USA
Eric Gardner, Douglas Hansen, Ray Perkins
MOXTEK, Inc., Orem, Utah, USA
ABSTRACT
MOXTEK has developed a new polarizer technology for the
visible spectrum based on the technology of nanometer-scale
wire-grids. They have named their technology ProFlux(tm)
Polarizers. These polarizers are extremely durable in
the LCOS
and transmissive light valve projector environment. They
also
offer very attractive optical performance characteristics
as beam
splitters in the imaging path, especially for an LCOS-type
system.
However, since they are plate beamsplitters, they are
not a direct
replacement for current cube beamsplitters. The proper
optical
system architecture based on the MOXTEK ProFlux(tm)
technology will exhibit significant improvements in image
contrast, contrast uniformity, brightness uniformity,
and color
uniformity. This paper compares performance of conventional
beamsplitter cubes with the ProFlux™ beamsplitter. It
suggests
optical architectures that favor the characteristics
of this new
beamsplitter while avoiding the problems characteristic
of a plate
beamsplitter. Test data on polarizers and example system
performance will be presented.
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P 18.3: Society for Information Display: The Display Applications and
Physics of the ProFlux™ Wire Grid Polarizer
Dr. Douglas Hansen, Dr. Eric Gardner, Dr. Raymond Perkins,
Michael Lines, Arthur Robbins
MOXTEK, Inc., Orem, Utah, USA
(801) 225- 0930
ABSTRACT
Each year the Society awards the Display of the Year
Award to
several leading edge display devices or technologies
that provide
innovative solutions to an information display need.
The
following paper provides a summary of a 2001 Display
of the
Year award recipient. The new polarization technology
described
here enables new solutions to difficult and fundamental
problems
in the display industry. It is applicable and valuable
in all types of
Liquid-Crystal (LC) displays or other applications of
polarization
in information display technology.
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A Comparison to Existing
Technologies
Dr. Eric Gardner
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7.1: An Image Quality Wire-Grid Polarizing Beam Splitter
Eric Gardner and Doug Hansen
MOXTEK, Inc., Orem, UT USA
ABSTRACT
MOXTEK1 introduces a flat ProFlux™ wire-grid polarizing
beam
splitter for use in projection systems where preservation
of image
quality is required upon reflection at the PBS. This
paper
discusses advantages obtainable when using the ProFlux™
flat
PBS in projection display architectures, and reasons
for these
advantages. Specifically, these advantages include high
system
contrast, simplified designs with various LCOS panels,
and
inherent high durability.
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An Image Quality Wire-Grid
Polarizing Beam Splitter
Dr. Eric Gardner & Dr. Douglas Hansen
SID 2003 (7-01)
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