Optical: systems and elements – Projection screen – Unitary sheet comprising plural refracting areas
Reexamination Certificate
2009-09-15
2011-11-01
LaBalle, Clayton E (Department: 2862)
Optical: systems and elements
Projection screen
Unitary sheet comprising plural refracting areas
C359S455000, C359S449000, C359S443000, C359S627000
Reexamination Certificate
active
08049961
ABSTRACT:
A lens unit and a projection screen made of the same are disclosed. The lens unit includes a micro lens having a light incident surface and a light emergent surface opposing to the light incident surface; a light absorbing layer formed on the light emergent surface of the micro lens and having a cavity formed therein; a scattering layer formed in the cavity of the light absorbing layer and including a transparent resin blended with scattering particles; and a reflective layer formed on the light absorbing layer and the scattering layer. The projection screen includes a plurality of the lens units, thereby achieving high contrast and high energy utilization efficiency of incident light with a large viewing angle.
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Chang You-Chia
Lin Ding-Zheng
Wen Chun-Hsiang
Wu Yaw-Ting
Yeh Jyi-Tyan
Butler Kevin
Industrial Technology Research Institute
LaBalle Clayton E
Muncy Geissler Olds & Lowe, PLLC
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