Optical: systems and elements – Projection screen – Unitary sheet comprising plural refracting areas
Reexamination Certificate
2011-01-11
2011-01-11
Mahoney, Christopher (Department: 2862)
Optical: systems and elements
Projection screen
Unitary sheet comprising plural refracting areas
C359S459000
Reexamination Certificate
active
07869126
ABSTRACT:
A screen includes a screen sheet including a lens array having a plurality of element lenses arranged in a two-dimensional plane on the front side of the screen, a plurality of reflection surfaces disposed on the backside of the lens array, the plurality of reflection surfaces inclined to the two-dimensional plane, and a plurality of scattering portions that scatter the light directed from the plurality of reflection surfaces toward the front side of the screen. At least one of the plurality of element lenses is a combined lens comprised of a set of two lens portions offset from each other obtained by relatively shifting optical axes of the lens portions, and the reflection surfaces correspond to the respective combined lenses.
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Mahoney Christopher
Oliff & Berridg,e PLC
Seiko Epson Corporation
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