Methods and system for creating focal planes using an alvarez lens
US10042097B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2016 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Feb 5, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0174
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise a lens assembly comprising two transmissive plates, a first of the two transmissive plates comprising a first surface sag based at least in part on a cubic function, and a DOE to direct image information to a user's eye; wherein the DOE is placed in between the two transmissive plates of the lens assembly, and wherein the DOE is encoded with the inverse of the cubic function corresponding to the surface sag of the first transmissive plate; such that a wavefront created by the encoded DOE is compensated by the wavefront created by the first transmissive plate, thereby collimating light rays associated with virtual content delivered to the DOE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.