METHOD OF EVALUATING IMAGE BLUR OF OPTICAL FILM AND OPTICAL FILM WITH REDUCED IMAGE BLUR
First Claim
Patent Images
1. A method of evaluating an image blur of an optical film, the method comprising:
- displaying a test pattern by driving an organic light-emitting display apparatus comprising the optical film;
obtaining an image by capturing the test pattern using a digital camera;
obtaining a spatial luminance distribution from the image;
transforming the spatial luminance distribution into a sensation curve; and
estimating a blur width from the sensation curve,wherein the blur width is a distance between peaks having minimum negative values, from among a plurality of peaks of the sensation curve.
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Abstract
A method of evaluating an image blur of an optical film includes displaying a test pattern by driving an organic light-emitting display apparatus including the optical film, obtaining an image by capturing the test pattern using a digital camera, obtaining a spatial luminance distribution from the image, transforming the spatial luminance distribution into a sensation curve, and estimating a blur width from the sensation curve, where the blur width is a distance between peaks having negative minimum values, from among a plurality of peaks of the sensation curve.
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Citations
20 Claims
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1. A method of evaluating an image blur of an optical film, the method comprising:
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displaying a test pattern by driving an organic light-emitting display apparatus comprising the optical film; obtaining an image by capturing the test pattern using a digital camera; obtaining a spatial luminance distribution from the image; transforming the spatial luminance distribution into a sensation curve; and estimating a blur width from the sensation curve, wherein the blur width is a distance between peaks having minimum negative values, from among a plurality of peaks of the sensation curve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical film comprising:
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a high refractive index pattern layer comprising a material having a refractive index greater than about 1, wherein the first surface comprises a pattern corresponding to a plurality of grooves, each having a curved groove surface, is defined on a first surface of the high refractive index pattern layer, and each of the plurality of grooves has a depth greater than a width thereof; and a low refractive index pattern layer comprising a material having a refractive index less than the refractive index of the high refractive index pattern layer, wherein the low refractive index pattern layer comprises protrusions corresponding to the plurality of grooves, wherein the optical film satisfies the following condition; - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification