Programmable deposition of thin films of a user-defined profile with nanometer scale accuracy
US-2016318066-A1 · Nov 3, 2016 · US
Post-formable multilayer optical films and methods of forming
US9588270B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9588270-B2 |
| Application number | US-201213344770-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 6, 2012 |
| Priority date | Jan 13, 1998 |
| Publication date | Mar 7, 2017 |
| Grant date | Mar 7, 2017 |
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Abstract
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Articles including post-formed multilayer optical films with layers of at least one strain-induced birefringent material, methods of manufacturing such articles by post-forming multilayer optical films, and multilayer optical films that are particularly well-suited to post-forming operations are disclosed. The articles, methods and multilayer optical films of the present invention allow for post-forming of multilayer optical films including strain-induced index of refraction differentials while retaining the desired optical properties of the multilayer optical films.
First claim
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What is claimed is: 1. An article comprising a multilayer optical film comprising an optical stack comprising a plurality of layers, the layers comprising at least one birefringent polymer and at least one different polymer, wherein the optical stack comprises a strain-induced index of refraction differential along a first in-plane axis and substantially the entire optical stack reflects at least about 85% of light of desired wavelengths that is polarized along the first in-plane axis, and further wherein the thickness of the optical stack varies by at least about 10% or more; and wherein the birefringent polymer is a polyester. 2. The article of claim 1 , wherein the thickness of the optical stack varies by at least about 20% or more. 3. The article of claim 1 , wherein substantially the entire optical stack reflects at least about 90% of light of desired wavelengths that is polarized along the first in-plane axis. 4. The article of claim 1 , wherein the optical stack further comprises a strain-induced index of refraction differential along a second in-plane axis that is perpendicular to the first in-plane axis. 5. The article of claim 1 , wherein the optical stack further comprises a first major surface, the first major surface comprising at least one depressed area formed thereon. 6. The article of claim 1 , further comprising a rigid substrate attached to the multilayer optical film.
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Classifications
including variation in thickness · CPC title
in the form of a thin sheet or foil, e.g. Polaroid · CPC title
Security printing {(securities B42D25/29)} · CPC title
Product with molecular orientation · CPC title
Of addition polymer from unsaturated monomers · CPC title
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- What does patent US9588270B2 cover?
- Articles including post-formed multilayer optical films with layers of at least one strain-induced birefringent material, methods of manufacturing such articles by post-forming multilayer optical films, and multilayer optical films that are particularly well-suited to post-forming operations are disclosed. The articles, methods and multilayer optical films of the present invention allow for pos…
- Who is the assignee on this patent?
- Merrill William W, Jonza James M, Benson Jr Olester, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification G02B5/287. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 07 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).