Holographic projection screen having a rear-facing fresnel lens
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United States of America Patent
Stats
-
Nov 21, 2000
Grant Date -
N/A
app pub date -
Sep 10, 1998
filing date -
Sep 10, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A screen for a projection-type video display apparatus. A linear-type Fresnel lens has a lens pattern on a first side for receiving light energy from a light source. A second side of the Fresnel lens is opposite the first side. The light energy exits the Fresnel lens from the second side. A hologram is affixed to the second side of the Fresnel lens for managing the dispersion of the light energy exiting from the second side of the Fresnel lens. The hologram is affixed to the Fresnel lens by any of various lamination processes.
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