Optics for reducing one dimension of a folded optical path

Details Optics for reducing one dimension of a folded optical path Optics for reducing one dimension of a folded optical path

1998-02-18

2000-06-27

Lee, John R

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

359497, 359500, 250225, G02B 530

Patent

active

060809809

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.

REFERENCES:
patent: 5610765 (1997-03-01), Colucci
patent: 5731886 (1998-03-01), Taber et al.
patent: 5751480 (1998-05-01), Kitagishi
patent: 5882774 (1999-03-01), Jonza et al.
patent: 5900976 (1999-05-01), Handschy et al.
patent: 5900977 (1999-05-01), Hikmet
patent: 5940149 (1999-08-01), Vanderwerf

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