Twin image screen

• US 20060152802A1
• Filed: 01/10/2006
• Published: 07/13/2006
• Est. Priority Date: 01/13/2005
• Status: Abandoned Application

• Current Assignee: Prodisc Technology
• Original Assignee: Prodisc Technology
• Inventors: Ko, Kuang-Lung, Tsai, Yaw-Huei, Tzeng, Ya-Cheng
• Application Number:
  US11/328,165
• Publication Number:
  US 20060152802A1
• Time in Patent Office: Days
• US Class Current: 359/452
• CPC Class Codes: G03B 21/62 Translucent screens

Abstract

A twin image screen includes a transparent substrate, a first diffuser and a second diffuser. In this case, the first diffuser is disposed at one side of the transparent substrate. The second diffuser is disposed at another side of the transparent substrate.

Claims

1. A twin image screen, comprising:

a transparent substrate;

a first diffuser disposed at one side of the transparent substrate; and

a second diffuser disposed at another side of the transparent substrate.

2. The twin image screen of claim 1, wherein the transparent substrate is made of polyethylene terephthalate (PET).

3. The twin image screen of claim 2, wherein the transparent substrate is flexible and has a thickness ranged from 100 μ

m to 200 μ

m.

4. The twin image screen of claim 1, wherein the transparent substrate is made of acrylic resin and has a thickness more than 200 μ

m.

5. The twin image screen of claim 1, wherein the first diffuser is composed of a first diffuser powder and a first resin, and the particle size of the first diffuser powder are ranged approximately from 0.5 to 20 μ

m.

6. The twin image screen of claim 5, wherein the first resin is made of styrene-methyl methacrylate (MS).

7. The twin image screen of claim 5, wherein the first diffuser powder has a refraction index ranged from 1.4 to 1.7.

8. The twin image screen of claim 1, wherein the first diffuser powder is made of polycarbonate, polyacrylate, polystyrene, or their mixtures.

9. The twin image screen of claim 1, wherein the second diffuser is composed of a second diffuser powder and a second resin, and the particle size of the second diffuser powder are ranged approximately from 0.5 to 20 μ

m.

10. The conference assistance unit of claim 9, wherein the second resin is made of styrene-methyl methacrylate (MS).

11. The twin image screen of claim 9, wherein the second diffuser powder has a refraction index ranged from 1.4 to 1.7.

12. The twin image screen of claim 9, wherein the second diffuser powder is made of polycarbonate, polyacrylate, polystyrene, or their mixtures.

13. The twin image screen of claim 9, wherein the first diffuser and the second diffuser powder are different.

14. The twin image screen of claim 1, wherein the first diffuser has a pressure sensitive adhesive.

15. The twin image screen of claim 1, further comprising:

a fixing board bonded with the side of the first diffuser opposite to the transparent substrate.

16. The twin image screen of claim 15, wherein the fixing board is made of acrylic or glass.

17. The twin image screen of claim 1, wherein the first diffuser has a dye to enhance color saturation.

18. The twin image screen of claim 1, wherein the second diffuser has a dye to enhance color saturation.