Methods, systems, and products for image displays
Methods, systems, and products illuminate display devices. An image is injected into a waveguide. The image propagates at total internal reflectance within the waveguide. A frustrator withdraws a frustrated image from the waveguide, and the frustrated image may be displayed to a viewer.
1. A display device, comprising:
a waveguide;
a projector for injecting an image into the waveguide, the image reflecting at total internal reflectance within the waveguide; and
a frustrator applied to a surface of the waveguide, the frustrator for withdrawing the image through the surface of the waveguide;
wherein the image is visible to a viewer through the surface of the waveguide.
2. The display device of claim 1 , further comprising a battery providing electrical power to the projector.
3. The display device of claim 1 , wherein the frustrator is a coating applied to the surface of the waveguide.
4. The display device of claim 1 , wherein the frustrator is a film applied to the surface of the waveguide.
5. The display device of claim 1 , further comprising a reflective material applied to the surface of the waveguide to reflect the image.
6. The display device of claim 1 , further comprising a magnifier that magnifies the image withdrawn by the frustrator.
7. The apparatus of claim 1 , further comprising a diffuser that diffuses the image withdrawn by the frustrator.
8. A method, comprising:
injecting, by a projector, an image into a waveguide;
reflecting, within the waveguide, the image at total internal reflectance;
applying a frustrator to a surface of the waveguide; and
withdrawing a frustrated image through the surface of the waveguide;
wherein the frustrated image is visible to a viewer through the surface of the waveguide.
9. The method of claim 8 , further comprising providing a battery for electrical power to the projector.
10. The method of claim 8 , further comprising withdrawing the frustrated image using a coating applied to the surface of the waveguide.
11. The method of claim 8 , further comprising withdrawing the frustrated image using a film applied to the surface of the waveguide.
12. The method of claim 8 , further comprising reflecting the image back into the waveguide.
13. The method of claim 8 , further comprising injecting the image into the waveguide using a second projector.
14. The method of claim 8 , further comprising injecting a different image into the waveguide using a second projector.
15. A display device, comprising:
a waveguide;
a projector for injecting an image at an angle into the waveguide, the image reflecting at total internal reflectance within the waveguide;
a frustrator applied to a surface of the waveguide, the frustrator for withdrawing a frustrated image through the surface of the waveguide; and
a magnifier for magnifying the frustrated image withdrawn by the frustrator.
16. The display device of claim 15 , further comprising a battery providing electrical power to the projector.
17. The display device of claim 15 , wherein the frustrator is a coating applied to the surface of the waveguide.
18. The display device of claim 15 , wherein the frustrator is a film applied to the surface of the waveguide.
19. The display device of claim 15 , further comprising a reflective material applied to the surface of the waveguide to reflect the image.
20. The display device of claim 15 , further comprising another projector for injecting the image into the waveguide.