Beam angle sensor in virtual/augmented reality system
US10359634B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2018 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Jul 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0125
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A virtual image generation system for use by an end user comprises a projection subsystem configured for generating a collimated light beam, and a display configured emitting light rays in response to the collimated light beam to display a pixel of an image frame to the end user. The pixel has a location encoded with angles of the emitted light rays. The virtual image generation system further comprises a sensing assembly configured for sensing at least one parameter indicative of at least one of the emitted light ray angles, and a control subsystem configured for generating image data defining a location of the pixel, and controlling an angle of the light beam relative to the display based on the defined location of the pixel and the sensed parameter(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.