Polarization control system and projector incorporating...

Details Polarization control system and projector incorporating... Polarization control system and projector incorporating...

2011-03-29

2011-03-29

Lavarias, Arnel C (Department: 2872)

Optical: systems and elements

Polarization without modulation

By relatively adjustable superimposed or in series polarizers

C359S494010, C353S020000, C349S005000, C349S119000, C349S121000

Reexamination Certificate

active

07916392

ABSTRACT:
A phase compensation element is disposed between a reflective type display element and a polarizing beam splitter. Composed of a crystal structure retardation layer functioning as a quarter-wave plate and an inclined-axis retardation layer functioning as an O-plate, the phase compensation element is aligned substantially parallel to a reflective surface of the reflective type display element. The inclined-axis retardation layer is made of inorganic material obliquely deposited on the crystal structure retardation layer. The inclined-axis retardation layer has a principal refractive index axis inclined at between 0° and 45° to a surface normal of the crystal structure retardation layer, and has a thickness not to increase haze of the phase compensation element.

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Robinson et al., “Wide Field of View Compensation Scheme for Cube Polarizing Beam Splitters”, SID '03 Digest pp. 874, Society for Information Display.

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