Microsphere spaced waveguide display
US10108011B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 20, 2015 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Jun 10, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0196
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The technology provides a waveguide display including an optical waveguide comprising a plurality of separated parallel optical substrates. The substrates are joined by an adhesive configured to have suspended therein a plurality of hard microspheres. The adhesive may be a pressure sensitive adhesive designed to have suspended therein the microspheres. Microspheres may have diameters on the order of a few microns up to 100 microns. The waveguide may be constructed of first and second optical substrates, and a pressure sensitive adhesive including embedded microspheres joining and spacing the substrates apart from each other. Additional substrates may be provided. The technology also provides a method of manufacturing a waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.