Image display system and electrically actuatable image combiner therefor
AssigneeReveo, Inc.
InventorsZhan He, Jaujeng Lin
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Abstract
The present invention is directed to an image display system for displaying an image in a user's line of sight including an image combiner that is electrically actuatable. The image display system generally includes an image projection device, and an electrically actuatable image combiner. The image combiner may be superposed with a transparent substrate such as a visor or a windshield.
Claims46
An image display system for displaying an image in a user's line of sight, said image display system comprising:
- an image projection device;
- and
- an image combiner being electrically actuatable between first and second states.
An image combiner for a heads up display comprising:
- at least one cholesteric liquid crystal layer;
- at least two optically transparent, electrically conductive substrates;
- and
- said image combiner being actuatable between first and second states.
A method for fabricating a heads up display system, said method comprising:
- providing an image projection device;
- providing an image combiner including at least one cholesteric liquid crystal layer, said image combiner being electrically actuatable between first and second states;
- providing a driving circuit;
- electrically connecting said image combiner with said driving circuit;
- and
- locating said image projection device for projecting images on said image combiner.
A method for positioning an image in a user's line of sight, said method comprising:
- positioning an image combiner including at least one cholesteric liquid crystal layer in the user's line of sight, said image combiner being electrically actuatable between first and second states;
- projecting an image to be combined with an image in user's line of sight on said image combiner;
- and
- selectively electrically actuating and deactuating said image combiner, wherein actuation of said image combiner from said first state to said second state substantially reduces the brightness of the projected image, and deactuation of said image combiner from said second state to said first state substantially increases the brightness of the projected image.
Dependencies are inferred from the claim text.