Projection system with collimating scanning mirror
AssigneeMagic Leap, Inc.
InventorsCharles David Melville, Brian T. Schowengerdt, Mathew D. Watson
Life of this patent
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Abstract
A display assembly suitable for use with a virtual or augmented reality headset is described and includes the following: an input coupling grating; a scanning mirror configured to rotate about two or more different axes of rotation; an optical element; and optical fibers, each of which have a light emitting end disposed between the input coupling grating and the scanning mirror and oriented such that light emitted from the light emitting end is refracted through at least a portion of the optical element, reflected off the scanning mirror, refracted back through the optical element and into the input coupling grating. The scanning mirror can be built upon a MEMS type architecture.
Claims19
A display assembly, comprising:
- an input coupling grating;
- a scanning mirror configured to rotate about two or more different axes of rotation;
- an optical element comprising a channel;
- and
- a light emitting component with a light emitting end disposed in the channel between the input coupling grating and the scanning mirror, wherein light emitted from the light emitting end is reflected off the scanning mirror, refracted through the optical element, and into the input coupling grating.
A method of operating a display assembly having an input coupling grating, a scanning mirror, an optical element comprising a channel, and a light emitting component, the method comprising:
- rotating the scanning mirror about two or more different axes of rotation;
- emitting light from a light emitting end of the light emitting component, the light emitting end disposed in the channel between the input coupling grating and the scanning mirror;
- reflecting the light off the scanning mirror;
- refracting the light through the optical element;
- and
- inputting the light into the input coupling grating.
Dependencies are inferred from the claim text.