Brightness enhancement film having curved prism units

Details Brightness enhancement film having curved prism units Brightness enhancement film having curved prism units

2004-07-02

2008-11-11

Amari, Alessandro (Department: 2872)

Illumination

Light modifier

Refractor

C362S337000, C362S620000

Reexamination Certificate

active

07448776

ABSTRACT:
A brightness enhancement film includes a substrate and a plurality of curved prism units. The curved prism units are extended in parallel and mounted to a surface of the substrate. Each of the curved prism units includes at least one meandering surface to provide with changes in curvature. Thus, the meandering surface of the curved prism unit is able to refract incident light in two dimensions with respect to the substrate that may enhance entire refractive efficiency in two dimensions.

REFERENCES:
patent: 5919551 (1999-07-01), Cobb et al.
patent: 6277471 (2001-08-01), Tang
patent: 6354709 (2002-03-01), Campbell et al.
patent: 6862141 (2005-03-01), Olczak
patent: 2001/0053075 (2001-12-01), Parker et al.
patent: 2003/0034445 (2003-02-01), Boyd et al.
patent: 2003/0035231 (2003-02-01), Epstein et al.
patent: WO 96/23649 (1996-08-01), None

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