Boots – shoes – and leggings
Patent
1997-05-09
2000-04-18
Grant, William
Boots, shoes, and leggings
345214, G05B 1900
Patent
active
060507179
ABSTRACT:
An optical visualizing apparatus for use in a head mounted display unit contains a liquid crystal shutter designed to allow a viewer to see both an image display and scenery outside of the image display at the same time. The apparatus contains a screen placed in front of the viewer's eyes, an optical visualizing unit to display an image on the screen, a mounting unit for supporting the optical visualizing unit in front of the viewer's face, and a control unit that can either suspend transmission of the image and allow clear sighting through the screen without the image or, if desired, simultaneous display of the image and sighting of scenery outside of the image. The control unit preferably controls a liquid crystal shutter that can adjust the amount of external light entering the display apparatus over two ranges, one range corresponding to the image area and the other range corresponding to the area surrounding the image area, so that the user can view a displayed image and external scenery clearly and simultaneously.
REFERENCES:
patent: 5579026 (1996-11-01), Tabata
patent: 5583674 (1996-12-01), Mosley
patent: 5841466 (1998-11-01), Mizoguchi, et al.
Koide Atsushi
Kosugi Ichiro
Ogihara Akira
Okoshi Yoshio
Sawachika Isao
Eissmann Peter W.
Grant William
Kananen Ronald P.
Sony Corporation
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