Image display device and method of manufacturing a light conductor for such an image display device
AssigneeKoninklijke Philips Electronics N.V.
InventorsWouter Roest, Helmar Van Santen
Life of this patent
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Abstract
An image display device comprising a light modulation panel, a light conductor arranged opposite the light modulation panel and a light source connected to the light conductor. The light conductor comprises a serrated foil which reflects a light beam emitted by the light source and having a first direction of polarization, and transmits a light beam modulated by the light modulation panel and having a second direction of polarization.
Claims9
An image display device comprising a light modulation panel, a light conductor situated opposite the light modulation panel, and a light source coupled to the light conductor, characterized in that the light conductor comprises a serrated foil which is reflective to a light beam emitted by the light source and having a first direction of polarization, and transparent to a light beam modulated by the light modulation panel and having a second direction of polarization.
An image display device as claimed in any one of the preceding claims, characterized in that the serrated foil is connected on at least one side to a sawtooth-shaped, light-transmissive support.
An image display device as claimed in any one of the preceding claims, characterized in that the foil is provided with the sawtooth-shaped projections by means of pressing between two facing mold parts.
A method of manufacturing a light conductor suitable for an image display device as claimed in any one of the preceding claims, characterized in that a foil is positioned between two sawtooth-shaped mold parts, whereafter the mold parts are moved towards each other, thus providing the foil with sawtooth-shaped projections.
Dependencies are inferred from the claim text.