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US 12,001,042 B2Granted
Optical body including multilayer optical film and thin adhesive layer
Assignee3M Innovative Properties Company
InventorsKarissa L. Eckert, Michelle L Toy, Adam D. Haag, Matthew B. Johnson, Albert I. Everaerts, Quinn D. Sanford
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Abstract
Optical bodies are described. In particular, optical bodies having a birefringent multilayer optical film and a continuous adhesive layer with a thickness less than 20 micrometers are described. Optical bodies described herein exhibit reduced occurrence and severity of a non-uniformity defect known as “orange peel.”
Claims6
An optical body, comprising:
- a birefringent multilayer optical film;
- a continuous adhesive layer disposed on a first major surface of the birefringent multilayer optical film;
- and
- a glass or plastic substrate layer attached to the multilayer optical film via the continuous adhesive layer;
- wherein the continuous adhesive layer has a thickness less than 20 micrometers;
- and
- wherein the optical body, measured through the glass or plastic substrate layer with an interferometer, has a peak-to-valley surface roughness of less than 50 nm.
4 more elements
Dependencies are inferred from the claim text.