Imaging system for a head-mounted display
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United States of America Patent
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Apr 11, 1995
Grant Date -
N/A
app pub date -
Sep 22, 1992
filing date -
Sep 22, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An imaging system (10) for a Head-Mounted Display (HMD) comprises a projection screen (22) integrally formed with a headgear structure of the HMD. An image source is projected onto the projection screen (22) as an intermediate image. An optical sub-system (24), such as a lens, re-images the intermediate image to form a virtual image as viewed by a user's eye (26). The present invention provides improved imaging while reducing the weight and manufacturing cost of the HMD. In accordance with another aspect of the present invention, an optical spatial filter (28) is utilized in an HMD imaging system to remove unwanted image artifacts, and increase the depth of focus of an intermediate projected image.
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Cited Art Landscape
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