US 12,078,804 B2
Projection system with collimating scanning mirror
Charles David Melville, Camano Island, WA (US); Brian T. Schowengerdt, Seattle, WA (US); and Mathew D. Watson, Bellevue, WA (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Mar. 24, 2021, as Appl. No. 17/211,770.
Application 17/211,770 is a continuation of application No. PCT/US2019/053633, filed on Sep. 27, 2019.
Claims priority of provisional application 62/738,722, filed on Sep. 28, 2018.
Prior Publication US 2021/0278673 A1, Sep. 9, 2021
Int. Cl. G02B 27/01 (2006.01); F21V 8/00 (2006.01); G02B 26/08 (2006.01); G02B 26/10 (2006.01); G02B 27/30 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/0006 (2013.01); G02B 6/001 (2013.01); G02B 26/0833 (2013.01); G02B 26/101 (2013.01); G02B 27/30 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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 configured to refract light that reflects off the scanning mirror with non-zero optical power; and
a plurality of optical fibers, each optical fiber of the plurality of optical fibers having 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.