公开(公告)号：US10852632B2

公开(公告)日：2020-12-01

申请号：US15989897

申请日：2018-05-25

Applicant: AGC Inc.

Inventor： Yukihiro Tao ,  Kenta Sekikawa ,  Yuriko Kaida

IPC: G03B21/62 ,  G02B5/02 ,  H04N5/74 ,  G02B5/08

Abstract: A transparent screen sheet that displays images projected from a front side of the transparent screen sheet and/or a rear side of the transparent screen sheet to a user on the front side, and causes the user on the front side to view a rear background behind the rear side. The transparent screen sheet includes an image display layer configured to display the images; and a resin film that holds the image display layer. A difference between a maximum value and a minimum value of retardations of the resin film measured by irradiating a main surface of the resin film with a light with a wavelength of 460 nm in a direction orthogonal to the main surface, within a region on the main surface that overlaps with the image display layer, is one fourth of the wavelength of the light or less.

公开(公告)号：US11054559B2

公开(公告)日：2021-07-06

申请号：US16002540

申请日：2018-06-07

Applicant: AGC Inc.

Inventor： Yasushi Kawamoto ,  Yukihiro Tao ,  Yoko Mitsui ,  Yuko Tachibana ,  Kenta Sekikawa

IPC: C03C17/36 ,  G02B5/26 ,  G03B21/62 ,  G03B21/60

Abstract: A reflective transparent screen (1) capable of displaying an image light projected from a projector as an image to an observer who is on the same side as the projector, is provided with two transparent substrates and a metal thin film (23) sandwiched therebetween, wherein the color tone of the image light reflected from the metal thin film (23) or the image visibility is improved by adjusting the metallic composition of the metal thin film (23).

公开(公告)号：US12222532B2

公开(公告)日：2025-02-11

申请号：US18674386

申请日：2024-05-24

Applicant: AGC Inc.

Inventor： Kenta Sekikawa ,  Hiromichi Nagayama ,  So Ishido

IPC: G02B5/30 ,  G02B3/00

Abstract: An optical element includes a three-dimensional structure having a curved surface; and a retardation plate bent along the curved surface. The retardation plate includes a transparent substrate and a liquid crystal layer formed over the transparent substrate. The retardation plate has a slow axis and a fast axis. A glass-transition temperature, Tgne, in a slow axis direction of the retardation plate is higher than a glass-transition temperature, Tgno, in a fast axis direction of the retardation plate.

公开(公告)号：US12032193B2

公开(公告)日：2024-07-09

申请号：US18162909

申请日：2023-02-01

Applicant: AGC Inc.

Inventor： Kenta Sekikawa ,  Hiromichi Nagayama ,  So Ishido

IPC: G02B5/30 ,  G02B3/00

CPC classification number: G02B5/3091 ,  G02B3/0018 ,  G02B5/3016 ,  G02B5/3041

Abstract: An optical element includes a three-dimensional structure having a curved surface; and a retardation plate bent along the curved surface. The retardation plate includes a transparent substrate and a liquid crystal layer formed over the transparent substrate. The retardation plate has a slow axis and a fast axis. A glass-transition temperature, Tgne, in a slow axis direction of the retardation plate is higher than a glass-transition temperature, Tgno, in a fast axis direction of the retardation plate.

公开(公告)号：US10732329B2

公开(公告)日：2020-08-04

申请号：US15937118

申请日：2018-03-27

Applicant: AGC Inc.

Inventor： Yuko Tachibana ,  Yukihiro Tao ,  Kenta Sekikawa

IPC: G02B5/02 ,  G03B21/14 ,  G03B21/60 ,  G02B27/01

Abstract: To provide an image projecting structure having a wide viewing angle and whereby the visibility of a projected image is high. The image projecting structure comprises a first transparent layer having irregularities formed on its surface, a reflective film formed on the surface on which the irregularities are formed, of the first transparent layer, and a second transparent layer formed on the reflective film, wherein the transmittance of visible light is from 5 to 95%; the value obtained by dividing the haze by the diffuse reflectance of visible light is at least 0.1 and at most 1; the vertical difference Sk in the core section defined by ISO 25178, of the surface on which the irregularities are formed, is at least 0.1 μm; and the value obtained by dividing the shortest autocorrelation length Sal by the vertical difference Sk in the core section is at least 1.2 and at most 190.