Transparent screen, transparent screen assembly, manufacturing method of transparent screen, and manufacturing method of transparent screen assembly
US-2018188643-A1 · Jul 5, 2018 · US
Transparent screen sheet, transparent screen, and image display system
US2018275505A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018275505-A1 |
| Application number | US-201815989897-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 25, 2018 |
| Priority date | Dec 1, 2015 |
| Publication date | Sep 27, 2018 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
What is claimed is: 1 . 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 of the transparent screen sheet, and causes the user on the front side of the transparent screen sheet to view a rear background behind the rear side of the transparent screen sheet, the transparent screen sheet comprising: an image display layer configured to display the images; and a resin film that holds the image display layer, wherein 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 of the resin film that overlaps with the image display layer, is less than or equal to one fourth of the wavelength of the light. 2 . The transparent screen sheet according to claim 1 , wherein at any position in the region on the main surface of the resin film that overlaps with the image display layer, the retardation of the resin film is one-fourth of the wavelength of the light or less. 3 . The transparent screen sheet according to claim 1 , wherein at a desired position in the region on the main surface of the resin film that overlaps with the image display layer, the retardation of the resin film is one-eighth of the wavelength of the light or less. 4 . The transparent screen sheet according to claim 1 , wherein at a desired position in the region on the main surface of the resin film that overlaps with the image display layer, the retardation of the resin film is one-sixteenth of the wavelength of the light or less. 5 . The transparent screen sheet according to claim 1 , wherein the resin film is arranged on both sides of the image display layer, the image display layer being interposed between the resin films. 6 . The transparent screen sheet according to claim 1 , wherein the image display layer includes a light transmission diffusion reflection layer configured to diffuse and reflect to the front side a light of the images projected from the front side, to display the images to the user on the front side. 7 . The transparent screen sheet according to claim 1 , wherein the image display layer includes a light transmission scattering layer configured to scatter a light of the images projected from the rear side to the front side, to display the images to the user on the front side. 8 . The transparent screen sheet according to claim 7 , wherein the resin film contains cycloolefin polymer, or cycloolefin copolymer. 9 . A transparent screen comprising: the transparent screen sheet according to claim 1 ; and a transparent plate that holds the transparent screen sheet. 10 . An image display system comprising: the transparent screen according to claim 9 ; and a projector configured to project images onto the transparent screen, wherein a light of the images projected from the projector is a polarized light.
Assignees
Inventors
Classifications
- G03B21/62Primary
Translucent screens · CPC title
used in reflection · CPC title
Projection arrangements for image reproduction, e.g. using eidophor · CPC title
used in transmission · CPC title
Mirrors {(vehicle mirrors involving special optical features B60R1/08)} · CPC title
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Frequently asked questions
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- What does patent US2018275505A1 cover?
- 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 …
- Who is the assignee on this patent?
- Asahi Glass Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G03B21/62. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Sep 27 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).