Systems, devices, and methods for angle- and wavelength-multiplexed holographic optical elements
US10133075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2016 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | May 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Systems, devices, and methods for combined angle- and wavelength multiplexing in holographic optical elements (“HOE”) are described. An angle- and wavelength-multiplexed HOE includes multiple angle-multiplexed sets of wavelength-multiplexed holograms. Each set of wavelength-multiplexed holograms includes at least two holograms that are each responsive to a different wavelength of light. Each angle-multiplexed set of wavelength-multiplexed holograms includes a respective set of wavelength-multiplexed holograms that are all responsive to light that is incident thereon with and angle of incidence that is within a particular range. An example application is described in which an angle- and wavelength-multiplexed HOE is used as a holographic combiner in a wearable heads-up display, where angle-multiplexing provides multiple spatially-separated exit pupils in the eyebox of the display and wavelength-multiplexing provides multiple colors to each respective exit pupil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.