Optical devices employing beam folding with polarizing...

Details Optical devices employing beam folding with polarizing... Optical devices employing beam folding with polarizing...

2005-08-09

2005-08-09

Juba, Jr., John (Department: 2872)

Optical: systems and elements

Polarization without modulation

Depolarization

C359S485050, C359S900000, C353S020000

Reexamination Certificate

active

06927912

ABSTRACT:
A beam folder increases optical length with polarizing beam splitters and reflectors that repolarize a beam by retarding it. An incident beam encounters the beam splitters multiple times, and are both passed and rejected by the same splitters. The splitters and repolarizing reflectors can be shaped to perform optical functions in a smaller volume. Valves and controls can varyl the beam intensity and combine multiple beams. Applications include projection, imaging, collimating, mixing, and balancing.

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