| 摘要 |
An optical film (20) comprises a first surface (24) defined by a first surface structure function modulated by a second surface structure function such that the first surface acts to diffuse light incident on the film, wherein the first surface structure function has a function of a micro-lens structure, and the second surface structure function has characteristics to provide the diffuse light. The optical film may be incorporated into a number of optical devices and structures. <IMAGE>
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