High-definition sound-absorbing screen

• US 20080007652A1
• Filed: 05/14/2007
• Published: 01/10/2008
• Est. Priority Date: 07/06/2006
• Status: Active Grant

• Current Assignee: Hae-Yong Choi
• Original Assignee: Hae-Yong Choi
• Inventors: Choi, Hae-Yong
• Granted Patent: US 7,826,134 B2
• Time in Patent Office: Days
• US Class Current: 348/460
• CPC Class Codes: G03B 21/565 Screens allowing free passage of sound G03B21/58 - G03B21/62 take precedence
• CPC Class Codes: G03B 21/60 characterised by the nature of the surface

Abstract

Disclosed herein is a projection screen. The screen includes a soft thin elastic transmission sheet having an elongation rate of 50% or more and high transmissivity, the elastic transmission sheet constituting a front surface of the screen, and a thin image sheet for focusing an image projected from a projector, the image sheet constituting a rear surface of the screen. The image sheet may serve as a transmission sheet or a reflection sheet. The image sheet may be directly formed at the screen, or the image sheet may be a hard film attached to the rear of the elastic transmission sheet. A vibration plate is disposed at the outside of the image sheet. Consequently, incident image is transmitted or reflected without any interference with external light, and therefore, it is possible to increase the brightness of the screen by two to five times as compared to a conventional screen. Also, external acoustic sound is dispersed and focused on the elastic transmission sheet of the screen, and the acoustic sound is extinguished by the vibrate plate. Consequently, the screen according to the present invention has a sound absorbing function and a high-brightness image display function.

Claims

1. A high-definition sound-absorbing screen comprising:

a soft thin elastic transmission sheet having both elasticity and transmissivity, the elastic transmission sheet constituting a front surface of the screen; and

a thin image sheet, having a dispersion function, for focusing an image projected from a projector, the image sheet constituting a rear surface of the screen, whereby

a sound absorbing function and a high-definition image focusing function are simultaneously accomplished by a single thin structure of the screen.

2. The screen according to claim 1, wherein the elastic transmission sheet is made of a material having an elongation rate of 50% or more.

3. The screen according to claim 1, wherein the screen is provided at the elastic transmission sheet thereof with an embossed surface.

4. The screen according to claim 1, wherein the image sheet, having the dispersion function, includes a thin reflection film.

5. The screen according to claim 1, wherein the image sheet includes a thin transmission film.

6. The screen according to claim 1, wherein the screen is mounted to a frame.

7. The screen according to claim 1, wherein the screen is constructed in a structure in which the screen can be rolled and unrolled.

8. The screen according to claim 1, further comprising:

a vibration plate disposed at the outside of the image sheet such that the image sheet can be vibrated by acoustic sound.

9. The screen according to claim 8, wherein the vibration plate has a wire mounted therein.

10. The screen according to claim 6, further comprising:

springs arranged between the frame and the vibration plate.