Helmet mounted display
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United States of America Patent
Stats
-
Aug 23, 1994
Grant Date -
N/A
app pub date -
May 4, 1992
filing date -
Sep 5, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A display, for example, for a visor attached to a helmet, the visor having a partially reflecting semi-transparent portion in the view of the wearer and an optical projector for projecting an image onto the semi-transparent portion for reflection therefrom. The semi-transparent portion has a relatively higher reflectivity in a central area thereof and a relatively lower reflectivity in an annular area outside the central area. In one aspect of the invention, the head mounted display includes a projector having a display source whereon an image is formed and an optical system for focusing the image at separate sagittal and tangential foci between the image-forming surface and the semi-transparent portion.
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