Illumination system for a display using cholesteric liquid cryst

Details Illumination system for a display using cholesteric liquid cryst Illumination system for a display using cholesteric liquid cryst

1994-01-25

1996-07-30

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Having optical element between object and recording medium

359 40, 359 48, 359 63, 359 65, G02F 113, G02F 11335

Patent

active

055417450

ABSTRACT:
A display system for direct viewing or projection includes a source of polarized light, an analyzer for reflecting or transmitting light as a function of the wavelength and polarization characteristic of incident light, and a display receiving light from said analyzer, the display being operable selectively to change a polarization characteristic of incident light, and light from the display being directed to the analyzer for reflection or transmission thereby. A method of display includes providing a source of polarized light, analyzing polarized light by selectively reflecting or transmitting light as a function of the wavelength and polarization characteristic of incident light, and creating a desired light pattern from light received from said analyzing step by selectively changing a polarization characteristic of incident light, and selectively transmitting light according to such pattern.

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