Freeform projected display
US10663731B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2017 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Oct 31, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A freeform projection display includes an optical emitter configured to output one or more wavelengths of light and an optical diffuser optically coupled to receive and disperse the one or more wavelengths of light from the optical emitter, wherein the optical diffuser has at least one radius of curvature. The freeform projection display further includes a refractive lens optically coupled to receive the one or more wavelengths of light from the optical diffuser and to project the one or more wavelengths of light. The freeform projection display further may include a light modulator disposed between the optical emitter and the optical diffuser, wherein the light modulator oscillates to project the image on the optical diffuser. An illuminated area of the optical diffuser is dimensioned so that the image produced by the light modulator fills an aperture of the refractive lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.