HIGH CONTRAST PROJECTION SCREEN WITH STRAY LIGHT REJECTION

A multi-layer projection screen includes a transparent substrate having first and second sides, a stray light rejection layer, and a lens array. The stray light rejection layer is disposed across the first side of the transparent substrate. The stray light rejection layer includes an array of pillar...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Norton Adam E, Kazmierski Andrei S, Bierhuizen Serge J
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A multi-layer projection screen includes a transparent substrate having first and second sides, a stray light rejection layer, and a lens array. The stray light rejection layer is disposed across the first side of the transparent substrate. The stray light rejection layer includes an array of pillar structures, wherein each pillar structure of the array of pillar structures includes an entrance aperture, an exit aperture, a substantially transparent pathway extending from the entrance aperture to the exit aperture, and an opaque side wall surrounding the transparent pathway. The lens array is disposed across the second side of the transparent substrate and optically aligned to the array of pillar structures. The stray light rejection layer blocks display light received from the lens array having an oblique trajectory that is greater than a threshold angle from a normal of the second side of the transparent substrate.