公开(公告)号：US20210026231A1

公开(公告)日：2021-01-28

申请号：US17040122

申请日：2018-12-03

Applicant: Appotronics Corporation Limited

Inventor： LIN WANG ,  FEI HU ,  YI LI

IPC: G03B21/60 ,  G02B3/00 ,  G02B5/00 ,  G02B5/04 ,  G02B5/02

Abstract: A curved screen (B) comprises the following layers sequentially arranged from inside to outside: a black light-absorbing layer (100), a microstructure array layer (200), and a transparent matrix layer (300). The microstructure array layer (200) consists of a plurality of microstructure units. The microstructure unit is a V-shaped recess (210) consisting of two intersecting inclined surfaces. The microstructure array layer (200) is rotationally symmetrical with respect to a center line of the curved screen (B). Angles of the V-shaped recesses (210) in respective longitudinal cross sections of the curved screen (B) are uniquely determined according to incident angles of light rays from a projector. Also disclosed are a method of arranging microstructures in the curved screen (B) and a projection system comprising the curved screen (B). The curved screen (B) has a higher contrast, improved brightness uniformity and an enlarged field of view.

公开(公告)号：US20210191249A1

公开(公告)日：2021-06-24

申请号：US17040123

申请日：2018-12-03

Applicant: Appotronics Corporation Limited

Inventor： LIN WANG ,  FEI HU ,  WEI SUN ,  YI LI

IPC: G03B21/602

Abstract: A screen comprises the following layers sequentially stacked from an incident side of projected light rays: a micro-lens layer, a transparent matrix layer, a total internal reflection layer, and a light-absorbing layer. The light-absorbing layer absorbs light passing through the micro-lens layer, the transparent matrix layer and the total internal reflection layer. The micro-lens layer comprises a plurality of micro-lens units. The total internal reflection layer comprises a plurality of microstructure units. The microstructure unit has a lower first flat surface and an upper second flat surface. The first flat surface intersects the second flat surface The micro-lens units and the microstructure units are at least partially arranged in an alternating manner. The projected light rays converged toward the first flat surface exit after being totally reflected by the first flat surface and the second flat surface sequentially.

公开(公告)号：US20220026794A1

公开(公告)日：2022-01-27

申请号：US17471426

申请日：2021-09-10

Applicant: Appotronics Corporation Limited

Inventor： LIN WANG ,  FEI HU ,  WEI SUN ,  YI LI

IPC: G03B21/602 ,  G02B5/02

Abstract: A screen comprises the following layers sequentially stacked from an incident side of projected light rays: a micro-lens layer, a transparent matrix layer, a total internal reflection layer, and a light-absorbing layer. The light-absorbing layer absorbs light passing through the micro-lens layer, the transparent matrix layer, and the total internal reflection layer. The micro-lens layer comprises a plurality of micro-lens units. The total internal reflection layer comprises a plurality of microstructure units. The microstructure unit has a lower first flat surface and an upper second flat surface. The first flat surface intersects the second flat surface. The plurality of microstructure units forms a serrated structure. The micro-lens units and the microstructure units are at least partially arranged in an alternating manner. The projected light rays converged toward the first flat surface exit after being totally internally reflected by the first flat surface and the second flat surface sequentially.

公开(公告)号：US20210223675A1

公开(公告)日：2021-07-22

申请号：US15733857

申请日：2019-01-05

Applicant: Appotronics Corporation Limited

Inventor： LIN WANG ,  WEI SUN ,  FEI HU

IPC: G03B21/602

Abstract: Provided is a projection screen, comprising a substrate (10), a total reflection layer (20), and a light absorbing layer (30) for absorbing light rays, which are sequentially arranged from a light incident side, wherein the total reflection layer (20) is provided with a plurality of trapezoidal micro-structures extending in the vertical direction of the projection screen, and the plurality of trapezoidal micro-structures is periodically arranged in the horizontal direction of the projection screen. The projection screen has the characteristics of simple structure, easy processing, low cost and high contrast.