Optical: systems and elements – Polarization without modulation – By relatively adjustable superimposed or in series polarizers
Patent
1998-02-20
1999-05-04
Epps, Georgia
Optical: systems and elements
Polarization without modulation
By relatively adjustable superimposed or in series polarizers
359487, 359488, 359497, 359500, 349 96, 353 20, G02B 530, G02F 11335, G03B 2128, G03B 2114
Patent
active
059009764
ABSTRACT:
A virtual image display system includes a reflective mode spatial light modulator, a light source for illuminating the spatial light modulator, and an optics arrangement for directing a predetermined portion of the light from the light source into the spatial light modulator and for directing certain portions of the light reflected from the spatial light modulator to a desired viewing area. The optics arrangement includes an overall polarizing beam splitter. The polarizing beam splitter has three layers of materials. The first layer is a layer of polarizing beam splitting material configured to reflect light of a first polarization and transmit light of a second polarization. The second layer is another layer of polarizing beam splitting material. The third layer is a layer of material positioned between the first and second layers of polarizing beam splitting materials. The first, second, and third layers of materials act together to form the overall polarizing beam splitter.
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Clark Noel A.
Handschy Mark A.
Beyer Jay
Burke Margaret
Displaytech, Inc.
Epps Georgia
Shear Stephen
LandOfFree
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