Transparent screen, transparent screen assembly, manufacturing method of transparent screen, and manufacturing method of transparent screen assembly

Patent metadata

Field	Value
Publication number	US-2018188643-A1
Application number	US-201815905880-A
Country	US
Kind code	A1
Filing date	Feb 27, 2018
Priority date	Sep 3, 2015
Publication date	Jul 5, 2018
Grant date	—

Abstract

A transparent screen includes a plurality of transparent plates arranged in a front-rear direction; and a screen main body, interposed between the transparent plates, configured to display video images projected from a front side or a rear side of the transparent screen to a user on the front side, and enable a rear background to be visually recognized by the user. In a cross section orthogonal to a part of an outer edge of the transparent screen, the transparent screen has a curved shape, and a length of a center line in a plate thickness direction of the transparent plate on an external side of the screen main body in a curvature radius direction of the curved shape is greater than a length of a center line of the transparent plate on an internal side of the screen main body.

First claim

What is claimed is:

1 . A transparent screen comprising:
a plurality of transparent plates arranged in a front-rear direction; and a screen main body, interposed between the plurality of transparent plates, configured to display video images projected from a front side of the transparent screen or from a rear side of the transparent screen to a user on the front side, and configured to enable a rear background to be visually recognized by the user, wherein in a cross section orthogonal to a part of an outer edge of the transparent screen, the transparent screen has a curved shape, and wherein in the cross section, a length of a center line in a plate thickness direction of the transparent plate on an external side of the screen main body in a curvature radius direction of the curved shape is greater than a length of a center line in a plate thickness direction of the transparent plate on an internal side of the screen main body in the curvature radius direction.

2 . The transparent screen according to claim 1 ,
wherein in the cross section, a difference in extent between end surfaces of the plurality of transparent plates, in which the screen main body is interposed, is 5 mm or less.

3 . The transparent screen according to claim 1 ,
wherein in the cross section, a difference in extent between end surfaces of the plurality of transparent plates, in which the screen main body is interposed, is 2 mm or less.

4 . The transparent screen according to claim 1 ,
wherein in a cross section orthogonal to another part of the outer edge of the transparent screen, the transparent screen has a flat shape.

5 . The transparent screen according to claim 1 ,
wherein each of the plurality of transparent plates, in which the screen main body is interposed, is a glass plate.

6 . The transparent screen according to claim 5 ,
wherein at least one of the plurality of glass plates, in which the screen main body is interposed, is a strengthened glass.

7 . The transparent screen according to claim 1 ,
wherein the screen main body is configured to display the video images projected from the front side to the user on the front side, and includes an irregular layer having an irregular pattern on a surface, a reflection film, formed along the irregular pattern on the surface of the irregular layer, configured to reflect a part of light incident from the front side to the front side, and configured to transmit a part of light incident from the rear side to the front side, and a covering layer covering the irregular pattern of the reflection film.

8 . The transparent screen according to claim 1 ,
wherein the screen main body is configured to display the video images projected from the rear side to the user on the front side, and includes a light scattering layer including a transparent resin and a light scattering material.

9 . A transparent screen assembly comprising:
the plurality of transparent screens according to claim 1 ; and a holding member configured to hold successively the plurality of transparent screens.

10 . A manufacturing method of a transparent screen including a plurality of transparent plates arranged in a front-rear direction; and a screen main body, interposed between the plurality of transparent plates, configured to display video images projected from a front side of the transparent screen or from a rear side of the transparent screen to a user on the front side, and configured to enable a rear background to be visually recognized by the user, the method comprising:
bending a plurality of transparent flat plates having different sizes of main surfaces in curved shapes on heating, to prepare the plurality of transparent plates, in which the screen main body is interposed; and laminating the plurality of transparent plates, interposing the screen main body between the plurality of transparent plates, wherein in a cross section orthogonal to a part of an outer edge of the transparent screen, the transparent screen has a curved shape, and wherein in the cross section, a length of a center line in a plate thickness direction of the transparent plate on an external side of the screen main body in a curvature radius direction of the curved shape is greater than a length of a center line in a plate thickness direction of the transparent plate on an internal side of the screen main body in the curvature radius direction.

11 . The manufacturing method of the transparent screen according to claim 10 ,
wherein the screen main body is configured to display the video images projected from the front side to the user on the front side, and includes an irregular layer having an irregular pattern on a surface, a reflection film, formed along the irregular pattern on the surface of the irregular layer, configured to reflect a part of light incident from the front side to the front side, and configured to transmit a part of light incident from the rear side to the front side, and a covering layer covering the irregular pattern of the reflection film.

12 . The manufacturing method of the transparent screen according to claim 10 ,
wherein the screen main body is configured to display the video images projected from the rear side to the user on the front side, and includes a light scattering layer including a transparent resin and a light scattering material.

13 . A manufacturing method of a transparent screen assembly comprising:
manufacturing the plurality of transparent screens by the manufacturing method according to claim 10 ; and connecting the plurality of transparent screens successively.

Assignees

• Asahi Glass Co Ltd

Inventors

• Shiraishi Ryuichi
• Kaida Yuriko
• Iguchi Yoshinori
• Tao Yukihiro

Classifications

• G02B5/02

  Diffusing elements; Afocal elements · CPC title

• G03B21/62 Primary

  Translucent screens · CPC title

• G02B5/08

  Mirrors {(vehicle mirrors involving special optical features B60R1/08)} · CPC title

• G02B2207/123

  Optical louvre elements, e.g. for directional light blocking · CPC title

• G02B5/09

  Multifaceted or polygonal mirrors {, e.g. polygonal scanning mirrors; Fresnel mirrors} · CPC title