PROJECTION SCREEN CONFIGURED TO BE PROJECTED WITH MULTI-ANGLE IMAGES

• US 20190324363A1
• Filed: 11/05/2018
• Published: 10/24/2019
• Est. Priority Date: 04/20/2018
• Status: Active Grant

• Current Assignee: Elite Screens Material Ltd.
• Original Assignee: Elite Screens Material Ltd.
• Inventors: Ku, Chia-Chen, Hsu, Rong-Lin
• Granted Patent: US 10,606,163 B2
• Time in Patent Office: Days
• CPC Class Codes: G03B 21/10 Projectors with built-in or built-on screen
• CPC Class Codes: G03B 21/56 Projection screens
• CPC Class Codes: G03B 21/567 for colour projection G03B21/58, G03B21/60 take precedence
• CPC Class Codes: G03B 21/58 collapsible, e.g. foldable; of variable area
• CPC Class Codes: G03B 21/60 characterised by the nature of the surface
• CPC Class Codes: G03B 21/62 Translucent screens

Abstract

A projection screen configured to be projected with multi-angle images includes a base membrane and a coating layer. The base membrane includes a body layer and a plurality of toothed portions connected with the body layer. A profile of each of the toothed portions includes at least one first plane and at least one second plane, where the first plane and the second plane each has a reflection angle different from each other, for providing multi-angle images of projection. The coating layer includes a reflection layer and a light-absorbing layer, where the reflection layer is disposed on the profile of each of the toothed portions; whereas the light-absorbing layer is disposed on the reflection layer, such that, as viewed from a projection position, the coating layer is disposed behind the base membrane. Thereby, the projection screen not only can provide multi-angle images of projection under the circumstance of maintaining the capability of resisting ambient light, but also can prevent the coating layer from contact and abrasion by human behaviors when in use, and as such, the life of use can be prolonged.

Claims

1. A projection screen configured to be projected with multi-angle images, comprising:

a base membrane, including a body layer and a plurality of toothed portions connected with the body layer, wherein a profile of each of the toothed portions includes at least one first plane and at least one second plane, and wherein the first plane and the second plane each has a reflection angle different from each other; and

a coating layer including a reflection layer and a light-absorbing layer, wherein the reflection layer is disposed on each of the toothed portions, and the light-absorbing layer is disposed on the reflection layer, and

a diffusion layer on the profile of each of the toothed portions, the diffusion layer having a surface optical microstructure for diffusing light,

wherein, as viewed from a projection position, the coating layer is disposed behind the base membrane for preventing the coating layer from contact and abrasion by human behaviors when in use.

4. The projection screen configured to be projected with multi-angle images as claimed in claim 1, wherein the reflection layer comprises a high reflective material selected from the group consisting of aluminum, silver, chromium, nickel, and tin.

5. The projection screen configured to be projected with multi-angle images as claimed in claim 1, wherein the light-absorbing layer is formed by mixing resin with a black pigment.

6. The projection screen configured to be projected with multi-angle images as claimed in claim 1, wherein the projection position includes a first projection position for providing a reflection layer of the at least one first plane to be reflected to a user, and a second projection position for providing a reflection layer of the at least one second plane to be reflected to the user.

7. The projection screen configured to be projected with multi-angle images as claimed in claim 1, wherein the base membrane comprises a transparent plastic membrane.

8. The projection screen configured to be projected with multi-angle images as claimed in claim 1, wherein the first plane has a reflection angle within a range of about 15 degrees to about 25 degrees.

2. (canceled)

3. The projection screen configured to be projected with multi-angle images as claimed in claim 2, wherein the diffusion layer is formed through chemical wet etching or physical dry etching.