Patent ID: 11940635
Assignee: LINTEC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A light diffusion control body comprising
at least two light diffusion control layers each having a regular internal structure, the regular internal structure comprising a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index,
the at least two light diffusion control layers are laminated to each other,
the at least two light diffusion control layers including a first light diffusion control layer and a second light diffusion control layer each having a minimum value of a haze value of 35% or more, the haze value being measured when one surface of each of the first light diffusion control layer and the second light diffusion control layer is irradiated sequentially with a light ray at an incident angle of −70° to 70° with respect to a normal direction of the surface being 0°,
a difference between a haze value of the first light diffusion control layer and a haze value of the second light diffusion control layer is 5 points or less, the haze value in the difference being measured when each light diffusion control layer is irradiated with light rays at an incident angle of 0°.