Advances in polymeric Cartesian polarizing beamsplitters and light engines employing them
2007
3M Polarization Beam Splitter (PBS) technology has been shown to be the most light efficient solution to the needs of
LCOS projection. It also provides very high contrast and extremely uniform dark states without the use of lead in the
glass prisms. We report on recent improvements in contrast performance, increased understanding of the effects of pupil
shape and size on contrast, effects of temperature on optical performance, and improved photostability. We also suggest
new light-engine architectures employing the 3M PBSs with associated light budget analyses.
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