Structured optical film with interspersed pyramidal structures
First Claim
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1. An optical film, comprising:
- a substantially transparent body having a first surface defined by a substrate portion and a structured surface disposed over the substrate portion opposite to the first surface and comprising a plurality of smaller pyramidal structures and a plurality of larger pyramidal structures interspersed with the plurality of smaller pyramidal structures, each pyramidal structure having a base including at least two first sides disposed opposite to each other and at least two second sides disposed opposite to each other.
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Abstract
Optical films are disclosed that include a substantially transparent body having a first surface defined by a substrate portion and a structured surface disposed over the substrate portion opposite to the first surface. The structured surface includes a plurality of smaller pyramidal structures and a plurality of larger pyramidal structures interspersed with the plurality of smaller pyramidal structures. Each pyramidal structure has a base including at least two first sides disposed opposite to each other and at least two second sides disposed opposite to each other. Also disclosed are optical devices including such optical films.
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Citations
22 Claims
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1. An optical film, comprising:
a substantially transparent body having a first surface defined by a substrate portion and a structured surface disposed over the substrate portion opposite to the first surface and comprising a plurality of smaller pyramidal structures and a plurality of larger pyramidal structures interspersed with the plurality of smaller pyramidal structures, each pyramidal structure having a base including at least two first sides disposed opposite to each other and at least two second sides disposed opposite to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An optical film, comprising:
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a substantially transparent body having a first surface defined by a substrate portion and a structured surface disposed over the substrate portion opposite to the first surface and comprising a plurality of smaller pyramidal structures and a plurality of larger pyramidal structures interspersed with the plurality of smaller pyramidal structures, each pyramidal structure having a base including at least two first sides disposed opposite to each other and at least two second sides disposed opposite to each other, wherein in the plurality of the larger pyramidal structures, the first sides are longer than the second sides. - View Dependent Claims (14, 15, 17)
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16. The optical film according to claim 16, further including a substrate portion that comprises at least one of:
- a polarizer, a diffuser, a brightness enhancing film, and a turning film.
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18. An optical film, comprising:
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a substantially transparent body having a first surface defined by a substrate portion and a structured surface disposed over the substrate portion opposite to the first surface and comprising a plurality of pyramidal structures, each pyramidal structure having a peak and a base, the peak defined by a first pair of facets and the base including at least two first sides disposed opposite to each other defined by a second pair of facets and at least two second sides disposed opposite to each other, wherein the first pair of prism facets has a first included angle and the second pair of prism facets has a second included angle, and wherein the first included angle is different than the second included angle. - View Dependent Claims (19, 20, 21, 22)
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Specification