Diffusion sheet, diffusion unit, illuminating unit, and display device
AssigneeSharp Kabushiki Kaisha
InventorTakahiro Yoshikawa
Life of this patent
Estimating the term…
Abstract
In a diffusion sheet (46), first reflection areas (AR1) with high reflectance and second reflection areas (AR2) with low reflectance are alternately arranged parallel to each other on a light receiving surface (46R), and third reflection areas (AR3) with high reflectance and fourth reflection areas (AR4) with low reflectance are alternately arranged parallel to each other on an light emitting surface (46F). In the diffusion sheet (46), the first reflection areas (AR1) and the fourth reflection areas (AR4) are opposed to each other, and the second reflection areas (AR2) and the third reflection areas (AR3) are opposed to each other.
Claims11
A diffusion member that receives light at a light receiving surface, refracts the light while the light is traveling therethrough, and emits the light from a light emitting surface thereof,
- wherein
- a first reflection area having high reflectance and a second reflection area having low reflectance are alternately arranged parallel to each other on the light receiving surface,
- a third reflection area having high reflectance and a fourth reflection area having low reflectance are alternately arranged parallel to each other on the light emitting surface,
- the first reflection area and the fourth reflection area are opposed to each other, and
- the second reflection area and the third reflection area are opposed to each other.
Dependencies are inferred from the claim text.