Optical article and method of making

Details Optical article and method of making Optical article and method of making

2007-04-16

2009-10-20

Truong, Bao Q (Department: 2875)

Illumination

Light modifier

C362S331000, C359S599000, C428S001300, C428S847400, C428S847700

Reexamination Certificate

active

07604381

ABSTRACT:
Disclosed herein is an optical article having a top layer with a structured surface that collimates light, a core layer secured to the top layer opposite the structured surface, and a bottom layer secured to the core layer opposite the top layer. Either the top layer or the core layer includes a first extrudable polymer having a flexural modulus of greater than 2.5 GPa, and the other layer includes a second extrudable polymer having a flexural modulus of 2.5 GPa or less, an impact strength of greater than about 40 J/m, and tensile elongation at break of greater than about 5%. The bottom layer includes a third extrudable polymer. The bottom layer of the optical article may be structured to diffuse light. One or two optical articles may be secured to an optical film such as a polarizer film. Methods and display devices are also disclosed herein.

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