Display devices
AssigneeThomson-CSF
InventorsGeorges Assouline, Michel Hareng, Michel Roncillat, Eugene Leiba
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Abstract
An improvement in electro-optical display devices utilizing polarized light is disclosed, in which the linearly polarized light emerging from the display device is picked up by a diffuser and reaches the observer eyes after passing through a linear polarizer. The contrast is thus enhanced and the display can be used in presence of strong ambient lighting. The contrast can be still further improved by arranging at either side of the diffuser two suitably oriented quarter-wave plates.
Claims6
A display device comprising means for producing a parallel beam of linearly polarized light, and successively positioned for receiving said light;
- electro-optical modulating means, first linear polarizer means having a first polarization direction, diffuser means and second linear polarizer means having a second polarization direction.
Dependencies are inferred from the claim text.