公开(公告)号：US11609488B2

公开(公告)日：2023-03-21

申请号：US17560742

申请日：2021-12-23

Applicant: TOPPAN Inc.

Inventor： Kei Saito ,  Sohei Abe ,  Yuji Yano ,  Saori Matsuyama

IPC: G03B21/62 ,  G02F1/1334 ,  G02F1/1335 ,  G02F1/137

Abstract: A screen including a light control sheet which includes a front surface and a rear surface and has a transparent state and an opaque state, and a transparent reflective layer that faces the rear surface. The front surface is positioned such that light from a projection device is applied in the opaque state. The opaque state includes a state in which an average diffuse reflectance of visible light applied to the front surface is 10% or more and less than 20%.