Optical: systems and elements – Projection screen – With reflector or additional screen
Reexamination Certificate
2008-01-29
2008-01-29
Lee, Diane I. (Department: 2851)
Optical: systems and elements
Projection screen
With reflector or additional screen
C359S455000, C359S459000
Reexamination Certificate
active
11179162
ABSTRACT:
Projection screens include a substrate, a reflective layer on the substrate and a refractive layer on the substrate. The reflective layer includes reflective microstructures of about 5 μm to about 500 μm in size, and arranged in a first pattern to reflect light at a first spatial frequency. The refractive layer includes refractive microstructures of about 5 μm to about 500 μm in size, and arranged in a second pattern that is different from the first pattern, to refract light at a second spatial frequency that is different than the first spatial frequency. Related fabrication methods also are described.
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Bright View Technologies Inc.
Cruz Magda
Lee Diane I.
LandOfFree
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