Fresnel lens sheet and rear projection screen including the...

Details Fresnel lens sheet and rear projection screen including the... Fresnel lens sheet and rear projection screen including the...

2006-01-24

2006-01-24

Koval, Melissa J (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S460000, C359S742000

Reexamination Certificate

active

06989929

ABSTRACT:
A Fresnel lens sheet includes: a sheet-shaped base; multiple first prisms with substantially triangular cross-sections formed on a light-source-side surface of the base; and multiple second prisms with substantially triangular cross-sections formed on a viewing-side surface of the base. Rear projection screens including such Fresnel lens sheets are also provided.

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