Optical: systems and elements – Diffusing of incident light
Reexamination Certificate
2011-07-05
2011-07-05
Ward, John A (Department: 2885)
Optical: systems and elements
Diffusing of incident light
C359S619000, C349S064000
Reexamination Certificate
active
07974011
ABSTRACT:
A dual prism sheet includes a base film, upper prisms formed on an upper surface of the base film and lower prisms formed on a lower surface of the base film. A cross-section of the upper and lower prisms is formed as an isosceles triangular shape having a base and a vertex angle, and a phase of the upper prisms is delayed between about 0 and about 0.5 times of a prism pitch with respect to a phase of the lower prisms.
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Hwang In-Sun
Kim Heu-Gon
Kim Hyoung-Joo
Shim Sung-Kyu
Shin Taek-Sun
Cantor & Colburn LLP
Samsung Electronics Co,. Ltd.
Ward John A
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