Multiple laser light source sets for scanning display systems
AssigneeGoogle Inc.
InventorDaniel Adema
Life of this patent
Estimating the term…
Abstract
An optical engine of a display system includes first and second sets of laser light sources, which may be independently controllable, with laser light from each set of laser light sources being respectively combined to form first and second elliptical laser light beams. The first and second elliptical laser light beams may propagate along parallel or angularly separated optical paths prior to incidence at a scan mirror of an optical scanner of the system. In some embodiments, the first and second elliptical laser light beams are incident on separate regions of the reflective surface of the scan mirror. In some embodiments, the first and second elliptical laser light beams are incident on partially overlapping regions of the reflective surface of the scan mirror.
Claims18
A display system comprising:
- an optical engine comprising:
- a first set of laser light sources;
- and
- a second set of laser light sources;
- a beam combiner configured to combine a plurality of laser light beams output by the first set of laser light sources and the second set of laser light sources and to output a first elliptical laser light beam corresponding to the first set of laser light sources and a second elliptical laser light beam corresponding to the second set of laser light sources, wherein the first elliptical laser light beam propagates along a first optical path and the second elliptical laser light beam propagates along a second optical path that is different from the first optical path;
- and
- a scan mirror, wherein the first elliptical laser light beam and the second elliptical laser light beam are both directed onto the scan mirror.
A method, comprising:
- combining a plurality of laser light beams output by a first set of laser light sources and a second set of laser light sources;
- outputting a first elliptical laser light beam corresponding to the first set of laser light sources and a second elliptical laser light beam corresponding to the second set of laser light sources, wherein the first elliptical laser light beam propagates along a first optical path and the second elliptical laser light beam propagates along a second optical path that is different from the first optical path;
- and
- directing the first elliptical laser light beam and the second elliptical laser light beam onto a scan mirror.
A wearable heads-up display system comprising:
- a beam combiner configured to:
- combine a plurality of laser light beams output by a first set of one or more laser light sources and a second set of one or more laser light sources;
- output a first elliptical laser light beam corresponding to the first set of one or more laser light sources and a second elliptical laser light beam corresponding to the second set of one or more laser light sources, wherein the first elliptical laser light beam propagates along a first optical path and the second elliptical laser light beam propagates along a second optical path that is different from the first optical path;
- and
- direct the first elliptical laser light beam and the second elliptical laser light beam onto a first region and a second region of a scan mirror.
Dependencies are inferred from the claim text.