Brightness enhancement article

Details Brightness enhancement article Brightness enhancement article

2008-06-10

2008-06-10

Ward, John Anthony (Department: 2885)

Illumination

Light modifier

Refractor

C349S065000, C362S620000

Reexamination Certificate

active

07384173

ABSTRACT:
A brightness enhancement article for use in an optical system is disclosed. The brightness enhancement article has a structured surface including light directing protrusions. The light directing protrusions include a peak and a base, the peak having a rounded contour defined by a first pair of prism facets and the base defined by a second pair of prism facets. The first pair of prism facets has a first included angle and the second pair of prism facets has a second included angle, such that the first included angle is different than the second included angle.

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