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:
multiple projectors receiving an electrical power to output separate images;
a waveguide propagating the separate images output by the multiple projectors;
a frustrator withdrawing an optical combination of the separate images from a surface of the waveguide; and
a diffuser optically diffusing the optical combination of the separate images withdrawn from the surface of the waveguide.
2. The display device of claim 1 , wherein the separate images are injected into the waveguide to create total internal reflectance.
3. The display device of claim 1 , wherein the optical combination of the separate images propagates within the waveguide at total internal reflectance.
4. The display device of claim 1 , wherein the multiple projectors output the separate images into the waveguide at angles that create total internal reflectance.
5. The display device of claim 1 , further comprising a battery providing the electrical power.
6. The display device of claim 1 , wherein the frustrator is a coating applied to the surface of the waveguide.
7. The display device of claim 1 , wherein the frustrator is a film applied to the surface of the waveguide.
8. A method, comprising:
injecting, by multiple projectors, separate images into a waveguide;
reflecting, within the waveguide, the separate images at total internal reflectance;
applying a frustrator to the waveguide;
withdrawing an optical combination of the separate images through the frustrator; and
optically diffusing the optical combination of the separate images withdrawn through the frustrator;
wherein the optical combination of the separate images is visible to a viewer.
9. The method of claim 8 , further comprising receiving an electrical power provided by a battery.
10. The method of claim 8 , further comprising withdrawing the optical combination of the separate images using a coating applied to the waveguide.
11. The method of claim 8 , further comprising withdrawing the optical combination of the separate images using a film applied to the waveguide.
12. The method of claim 8 , further comprising magnifying the optical combination of the separate images.
13. The method of claim 8 , further comprising magnifying the optical combination of the separate images withdrawn through the frustrator.
14. The method of claim 8 , further comprising injecting each of the separate images into the waveguide to create total internal reflectance.
15. A display device, comprising:
a waveguide;
multiple projectors for injecting separate images into the waveguide at total internal reflectance;
a frustrator applied to the waveguide, the frustrator for withdrawing an optical combination of the separate images through the frustrator; and
a diffuser for diffusing the optical combination of the separate images.
16. The display device of claim 15 , further comprising a battery providing an electrical power to the multiple projectors.
17. The display device of claim 15 , wherein the frustrator is a coating applied to the waveguide.
18. The display device of claim 15 , wherein the frustrator is a film applied to a surface of the waveguide.
19. The display device of claim 15 , further comprising a magnifier for magnifying the optical combination of the separate images.
20. The display device of claim 15 , wherein the waveguide comprises a tapered cross-section to optically combine the separate images.