Optical sheet and light emitting apparatus

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United States of America Patent

PATENT NO 9203054
APP PUB NO 20150171373A1
SERIAL NO

14560702

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Abstract

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An optical sheet includes a light scattering layer that scatters at least a part of light incident thereon by diffraction and that includes first and second areas. Each first area is a projection. Each second area is a recess. Each of at least the projections or the recesses has a tapered shape. When a center wavelength of the light incident on the light scattering layer is λ and a refractive index of a layer that is in contact with the light scattering layer at a light emission side is n, spatial frequency components of a pattern formed by the first and second areas have a maximum peak at a spatial frequency in a range of 0.068/(λ×n) or more and 2.8/(λ×n) or less.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD1-61 SHIROMI 2-CHOME CHUO-KU OSAKA-SHI OSAKA 540-6207

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hashiya, Akira Osaka, JP 45 229
Hirasawa, Taku Kyoto, JP 62 523
Inada, Yasuhisa Osaka, JP 98 312
Nakamura, Yoshitaka Osaka, JP 215 1637

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