Light emitting diode (LED) device and method of making same

Details Light emitting diode (LED) device and method of making same Light emitting diode (LED) device and method of making same

2005-09-02

2008-07-29

Lee, Diane I. (Department: 2851)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S222100, C359S263000, C359S317000, C359S318000, C362S612000, C362S555000

Reexamination Certificate

active

07405857

ABSTRACT:
A light managing screen may provide a rear projection screen, front projection screen or component thereof. The screen may comprise a polymeric composition including a first polymeric material, and a second polymeric material disposed as a plurality of elongated structures within the first polymeric material. Each elongated structure has a major axis and the major axes are substantially aligned. The first polymeric material has an index of refraction that differs by at least 0.01 from an index of refraction of the second polymeric material. In some instances, a pressure sensitive adhesive material is selected as the first polymeric material. The orientation of the elongated structures and the difference in indices of refraction results in the polymeric composition scattering light asymmetrically.

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