Liquid crystal cells – elements and systems – Liquid crystal system – Heads-up display
Reexamination Certificate
2002-01-02
2004-01-06
Chowdhury, Tarifur R. (Department: 2871)
Liquid crystal cells, elements and systems
Liquid crystal system
Heads-up display
C349S015000, C349S008000, C359S462000
Reexamination Certificate
active
06674493
ABSTRACT:
BACKGROUND
This invention relates generally to head mounted displays that display an image that appears in front of the user.
Head mounted displays may utilize liquid crystal displays that are positioned close to the user's eyes to display a virtual image that appears to float in front of the user. The liquid crystal displays may be very small, and therefore relatively light, enabling a very portable display system. For example, the image may appear in front of the user allowing the user to move around while continuing to see the image. This may be useful in facilitating the completion of relatively complex tasks such as the assembly of products.
Of course, the lighter that the head mounted display can be made, the more the display generates an image without inconvenience to the user. The more the user's movements are obstructed by the weight of the display, the less likely users are to use these types of displays.
Conventionally, the head mounted display includes a liquid crystal display in front of each eye. Thus, stereoscopic or three dimensional images may be generated.
However, the added weight of the optics and the displays for each eye may increase the burden of the head mounted display on the user.
Therefore there is a need for better ways to provide head mounted displays with stereoscopic viewing.
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Chowdhury Tarifur R.
Intel Corporation
Trop Pruner & Hu P.C.
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