Front projection screen with lenticular front surface
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United States of America Patent
Stats
-
Sep 16, 1997
Issued Date -
N/A
app pub date -
Jul 21, 1995
filing date -
May 12, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A front projection screen is made up of a front portion and a rear portion, the front portion having a front surface lenticular lens array and light scattering particles forming a diffusion region between the front and rear surfaces, and the rear portion having a reflective surface spaced apart from the diffusion region. In use, an incoming ray of projected light traverses the diffusion region and the space between the diffusion region and the reflective surface, before being reflected back through these regions again. Thus, the ray traverses different portions of the diffusion region in different directions, increasing the likelihood that the ray will encounter at least one scattering particle, thus reducing the incidence of speckle. A stiffening layer of a glass plate with an anti-reflection coating is bonded to the front surface of the screen.
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Family
International Classification(s)
Cited Art Landscape
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