Ultra-high resolution scanning fiber display
One embodiment is directed to a compact system for scanning electromagnetic imaging radiation, comprising a first waveguide and a second waveguide, each of which is operatively coupled to at least one electromagnetic radiation source and configured such that output from the first and second waveguides is luminance modulated and scanned along one or more axes to form at least a portion of an image.
1. A system for scanning electromagnetic imaging radiation, comprising:
a drive electronics system configured to generate at least one pixel modulation signal and at least one drive signal;
at least one electromagnetic radiation source having an output of light and configured to modulate light from the output of the at least one electromagnetic radiation source based on the at least one pixel modulation signal;
a first optical fiber operatively coupled to the output of the at least one electromagnetic radiation source and configured such that an output from the first optical fiber is luminance modulated; and
a first scanning actuator operatively coupled to and configured to move the first optical fiber in a spiral pattern in response to the at least one drive signal to scan an output of the first optical fiber in a spiral scan pattern to form at least a portion of an image, wherein pixel luminance modulation promotes more even exposure.
2. The system of claim 1 , wherein the first optical fiber comprises an optical fiber.
3. The system of claim 1 , wherein the optical fiber comprises a cladding and at least one core.
4. The system of claim 3 , wherein the optical fiber comprises two or more cores occupying the same cladding.
5. The system of claim 1 , wherein the optical fiber is a single-mode optical fiber.
6. The system of claim 1 , wherein the optical fiber is a multi-mode optical fiber.
7. The system of claim 1 , wherein the optical fiber is a step-index optical fiber.
8. The system of claim 1 , wherein the optical fiber is a graded-index optical fiber.
9. The system of claim 1 , wherein the optical fiber is a photonic crystal optical fiber.
10. The system of claim 1 , wherein the at least one electromagnetic radiation source produces electromagnetic radiation having a wavelength in the ultraviolet to infrared range.
11. The system of claim 10 , wherein the at least one electromagnetic radiation source produces visible light electromagnetic radiation.
12. The system of claim 1 , wherein the at least one electromagnetic radiation source comprises a composite source configured to inject a plurality of wavelengths of radiation into the first optical fiber.
13. The system of claim 12 , wherein the composite source is configured to inject red, green, and blue visible light radiation wavelengths.
14. The system of claim 13 , further comprising a combiner to generate the composite source, wherein the composite source has a plurality of individual sources operatively coupled together with the combiner.
15. The system of claim 14 , wherein the combiner comprises a wavelength division multiplexer.
16. The system of claim 1 , wherein the at least one electromagnetic radiation source comprises a directly-modulatable emitter.
17. The system of claim 16 , wherein the directly-modulatable emitter is a diode laser.
18. The system of claim 17 , wherein the directly-modulatable emitter is a light-emitting diode.
19. The system of claim 1 , wherein the at least one electromagnetic radiation source comprises an emitter operatively coupled to a modulator.
20. The system of claim 19 , wherein the modulator is an interferometric modulator.
21. The system of claim 19 , wherein the modulator is a Mach-Zehnder interferometric modulator.
22. The system of claim 19 , wherein the modulator is an acousto-optical modulator.
23. The system of claim 19 , wherein the modulator is a shutter.
24. The system of claim 1 , further comprising:
a second optical fiber operatively coupled to the at least one electromagnetic radiation source and configured such that an output from the second optical fiber is luminance modulated; and
a second scanning actuator operatively coupled to and configured to move the second optical fiber in a spiral pattern in response to the at least one drive signal to scan an output of the second optical fiber in a spiral scan pattern to form at least a portion of the image.