Curved waveguide for slim head up displays
US11852817B2 · kind B2 · utility
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2References
20Claims
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Assignee
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Key dates
| Filing date | Jul 14, 2021 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Sep 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0181
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waveguide can include a first portion configured to confine an input beam within the structure of the waveguide, and a second portion configured to collimate the beam to be projected through a combiner, to produce an image in infinity. A method of constructing an optical system for a head-up-display can include shaping a first waveguide element such that a first portion of the waveguide is configured to confine an input beam within the structure of the waveguide, and a second portion is configured to collimate the input beam. The method can include coupling the waveguide to a combiner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.