Reflective cholesteric filter

Details Reflective cholesteric filter Reflective cholesteric filter

2005-06-14

2005-06-14

Parker, Kenneth (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S176000, C349S194000

Reexamination Certificate

active

06906764

ABSTRACT:
A polarized light extraction optical element is formed by a light-transmitting base material and a polarization separation layer laminated thereonto, this polarization separation layer being a liquid crystal layer made of a cholesteric liquid crystal. The thickness of the liquid crystal layer is smaller than the thickness that would be required to achieve a maximum reflectivity, so that part of one of the right and left circularly polarized light components is reflected with a reflectivity smaller than the maximum reflectivity.

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