| 发明名称 |
OPTICAL SHEET AND LIGHT EMITTING APPARATUS |
| 摘要 |
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. |
| 申请公布号 |
US2015171373(A1) |
申请公布日期 |
2015.06.18 |
| 申请号 |
US201414560702 |
申请日期 |
2014.12.04 |
| 申请人 |
Panasonic Intellectual Property Management Co., Ltd. |
发明人 |
HIRASAWA TAKU;INADA YASUHISA;HASHIYA AKIRA;NAKAMURA YOSHITAKA |
| 分类号 |
H01L51/52;G02B5/02 |
主分类号 |
H01L51/52 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical sheet comprising:
a light scattering layer that scatters at least a part of light incident on the light scattering layer by diffraction and that includes first areas and areas, wherein each of the first areas is a projection and each of the second areas is a recess, wherein each of at least the projections or the recesses has a tapered shape, and wherein, 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 areas and the 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. |
| 地址 |
Osaka JP |
