Laser scan beam foveated display
US9986215B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2017 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Mar 23, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2354/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes one or more MEMS mirrors, a light source driver and a controller. The light source driver selectively drives one or more light emitting elements of a light source to thereby produce a light beam that is directed towards a same MEMS mirror. The controller controls rotation of the MEMS mirror(s) in a fast-axis direction and a slow-axis direction in order to raster scan an image using the light beam reflected from the MEMS mirror(s). In order to achieve a first line density in a first portion of the image being raster scanned and to achieve a second line density, that is less than the first line density, in a second portion of the image being raster scanned, the controller dynamically adjusts a speed at which one of the MEMS mirror(s) is rotated in the slow-axis direction. Related systems and methods are also disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.