High efficiency optical devices

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428480, 428483, 428522, 428523, 428910, 359577, 359580, 359586, 359587, B32B 702, B32B 2708, B32B 2730, B32B 2736

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06080467&

ABSTRACT:
Optical devices such as light pipes which incorporate multilayer optical films in which the refractive indices of two adjacent layers in the thickness direction are substantially matched or are small relative to the difference in refractive indices of said two adjacent layers in an given in-plane direction which is at least 0.05.

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