Optics for reducing one dimension of a folded optical path
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United States of America Patent
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Jun 27, 2000
Grant Date -
N/A
app pub date -
Feb 18, 1998
filing date -
Feb 18, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical system that folds a light path multiple times with all the folded paths being coplanar. The light is first polarized. Then, the polarized light is reflected multiple times through a quarter-wave plate, finally being phase shifted to the proper polarization state to enable transmission out of the system. One optical element transmits light that is at one planar polarity and reflects light at the orthogonal planar polarity. Another optical element transmits light that is at one circular polarity and reflects light at the orthogonal circular polarity.
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