公开(公告)号：US20210389658A1

公开(公告)日：2021-12-16

申请号：US17291261

申请日：2019-09-26

Applicant: APPOTRONICS CORPORATION LIMITED

Inventor： Wei SUN ,  Lin WANG ,  Zeda TANG ,  Fei HU ,  Yi LI

IPC: G03B21/60 ,  G02B5/02 ,  G02B5/00

Abstract: A projection screen and a projection system. The projection screen includes a reflection layer and a light absorption layer for absorbing light which are sequentially arranged from an incident side of projection light; the reflection layer comprises multiple microstructure units; each microstructure unit comprises a first plane and a second plane which are opposite to each other at an angle in a first direction as well as a third plane and a fourth plane which are opposite to each other at an angle in a second direction.