Display system with tunable lens distortion compensation
US10395349B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Sep 19, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/294
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device such as a head-mounted display or other display system may have a pair of adjustable focal length lenses. Control circuitry in the head-mounted display may adjust the adjustable focal length lenses so that the adjustable focal length lenses exhibit a series of different focal lengths. A graphics processor may generate undistorted image frames. The adjustable focal length lenses may exhibit a different amount of lens distortion at each focal length. To compensate for these different amounts of lens distortion, a distortion compensation circuit may predistort the undistorted image frames by an appropriate amount for each focal length. The distortion compensation circuit may include mapping and interpolation circuitry and look-up tables that store mapping and interpolation data for each of the focal lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.