Display system utilizing ambient light and a dedicated light source
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 11, 2003
Grant Date -
N/A
app pub date -
Oct 19, 2000
filing date -
Oct 29, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display system generally comprising a display device operable to display an image and configured for illumination by ambient light or light emitted by a dedicated light source and a light directing system. The light directing system is operable to direct one of the ambient light and the light emitted by the light source towards the display device. The light directing system comprises at least one holographic optical element which is switchable between an active state wherein light incident on the element is diffracted and a passive state wherein light incident on the element is transmitted without substantial alteration.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully