Scratch-resistant light directing films

Details Scratch-resistant light directing films Scratch-resistant light directing films

Filed on

2006-11-28

Date issued

2006-11-28

Examiner

Kim, Ellen E. (Department: 2874)

Patent Class

Optical waveguides

SubClass

Noncyclindrical or nonplanar shaped waveguide

Other Related Categories

C353S033000

Type

Reexamination Certificate

Status

active

Patent number

07142767

Description

ABSTRACT:
A scratch-resistant light directing film has a structured surface with first and second prism elements. The first prism elements are taller than the second prism elements and have blunt tips. The second prism elements are shorter and have sharp tips. The resulting film is scratch-resistant without substantially sacrificing gains in on-axis light.

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