Method of evaluating image blur of optical film and optical film with reduced image blur
US9590210B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Oct 14, 2014 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Oct 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/4209
- WIPO fieldOptics
- WIPO sectorInstruments
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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