FIELD: physics.
SUBSTANCE: optical film has a moth-eye relief structure, having multiple protrusions which include multiple slanting protrusions that are inclined relative the primary surface of the film in essentially the same direction when viewing the primary surface of the film from above. The slanting protrusions lie on the periphery of the optical film and are inclined into the film when viewing the primary surface of the optical film from above. The method of making the film includes a step of applying a physical force to the moth-eye structure so as to slant said multiple protrusions. Said step includes a polishing sub-step which involves polishing the moth-eye structure in a predetermined direction.
EFFECT: providing directivity of optical properties of the optical film.
19 cl, 26 dwg
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