Holographic waveguide HUD with in-line pupil expansion and 2D FOV expansion
| Autor: | Colton M. Bigler, Pierre Alexandre Blanche, Micah S. Mann |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Diffraction business.industry Holography Physics::Optics Field of view Grating Diffraction efficiency 01 natural sciences Atomic and Molecular Physics and Optics law.invention 010309 optics Optics law 0103 physical sciences Electrical and Electronic Engineering business Engineering (miscellaneous) Waveguide Zemax Beam (structure) |
| Zdroj: | Applied optics. 58(34) |
| ISSN: | 1539-4522 |
| Popis: | A method of head-up display is presented that uses an in-line surface relief grating attached to a waveguide propagation head-up display to achieve a large field of view without the need for large-projection optics. Horizontal pupil expansion is achieved using an extraction hologram that is multiple times the size of the injection hologram and is recorded with modulated diffraction efficiency. Vertical pupil expansion is achieved by coupling the surface relief grating to the waveguide surface between the injection and extraction holograms. The grating replicates the beam along the propagation direction, which allows for a larger field of view at the extraction. Using this technique, both a Zemax OpticStudio computer model and a physical system demonstrator achieve a field of view of 16∘×14.25∘. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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