Augmented reality optical module
US11579446B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2020 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Apr 24, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/012
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided are an augmented reality optical module, including a first lens, a second lens, a third lens group, a first polarization modulation unit provided on a side of the third lens group and configured to modulate the light emitted by the image source into first circularly polarized light, an angle selection film provided on a first surface of one side of the first lens and configured to reflect light having an incidence angle greater than or equal to a first angle and transmit light having an incidence angle smaller than or equal to a second angle, and a second polarization modulation unit provided on the other side of the first lens and configured to modulate incident circularly polarized light into linearly polarized light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.