Multilayer polarizer having a continuous and disperse phase
First Claim
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1. A polarizer, comprising:
- a plurality of layers arranged in a repeating sequence of at least a first and second layer type;
wherein said first layer type comprises a polyester continuous phase and a disperse phase, randomly distributed throughout said continuous phase, and wherein said continuous and disperse phases comprise diverse thermoplastic polymers.
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Abstract
An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film.
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Citations
41 Claims
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1. A polarizer, comprising:
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a plurality of layers arranged in a repeating sequence of at least a first and second layer type; wherein said first layer type comprises a polyester continuous phase and a disperse phase, randomly distributed throughout said continuous phase, and wherein said continuous and disperse phases comprise diverse thermoplastic polymers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A polarizer, comprising:
a plurality of layers arranged in a repeating sequence of at least a first and second layer type; wherein said first layer type comprises a continuous phase, a disperse phase, and a compatibilizer, and wherein said continuous and disperse phases comprise diverse thermoplastic polymers. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A polarizer, comprising:
a plurality of layers arranged in a repeating sequence of at least a first and second layer type; wherein said first layer type comprises a continuous phase and a disperse phase, wherein said continuous and disperse phases comprise diverse thermoplastic polymers, wherein said disperse phase comprises a plurality of particles, and wherein each of said particles have an essentially elliptical cross-section. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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38. In combination with a mirror, a polarizer, comprising:
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a continuous phase; and a disperse phase, disposed within said continuous phase; wherein said continuous and disperse phases comprise diverse thermoplastic polymers. - View Dependent Claims (39, 40, 41)
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Specification