Optical laminate and image display device using same
AssigneeToppan Tomoegawa Optical Films Co., Ltd.
InventorsYuri NAGAI, Satoshi Kanata, Taira Kaneko, Takumi Saito
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AssigneeToppan Tomoegawa Optical Films Co., Ltd.
InventorsYuri NAGAI, Satoshi Kanata, Taira Kaneko, Takumi Saito
Estimating the term…
Provided are an optical laminate that is excellent in sparkle resistance and fingerprint removability, and an image display device using the same. The optical laminate has an uneven shape on a topmost surface, and satisfies a condition (1): 800≤A≤5,500, and a condition (2): 0<B≤100. Here, A and B are values calculated from a second image obtained by performing fast Fourier transform on a first image obtained from three-dimensional data of unevenness heights obtained by measuring the uneven shape through optical interferometry or in a contact manner. A is an average value of power spectrum intensities in a range of 50 cycles/mm≤f≤100 cycles/mm, and B is an average value of power spectrum intensities in a range of 200 cycles/mm≤f≤250 cycles/mm.
An optical laminate having an uneven shape on a topmost surface thereof, wherein
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