Optical combiner including polarization-selective elements and switchable half-wave plates for pupil steering
US11619815B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2020 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Jan 12, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/292
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical assembly includes a beam steering device and a holographic optical element. The beam steering device is switchable between different states including a first state and a second state. The beam steering device includes a first polarization-selective optical element and a first tunable optical retarder optically coupled with the first polarization-selective optical element. The holographic optical element is positioned relative to the beam steering device for receiving light from the beam steering device and projecting a first light pattern while the beam steering device is in the first state and a second light pattern distinct from the first light pattern while the beam steering device is in the second state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.