US 12,092,831 B2
Eyepieces for use in wearable display systems
Dianmin Lin, Los Altos, CA (US); and Pierre St. Hilaire, Belmont, CA (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Nov. 20, 2023, as Appl. No. 18/514,500.
Application 18/514,500 is a continuation of application No. 18/077,030, filed on Dec. 7, 2022, granted, now 11,899,216.
Application 18/077,030 is a continuation of application No. 17/082,729, filed on Oct. 28, 2020, granted, now 11,543,664, issued on Jan. 3, 2023.
Claims priority of provisional application 62/928,798, filed on Oct. 31, 2019.
Prior Publication US 2024/0085705 A1, Mar. 14, 2024
Int. Cl. G02B 27/01 (2006.01); F21V 8/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/0036 (2013.01); G02B 6/0076 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0178 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining a waveguide comprising a first surface and a second surface opposite the first surface,
wherein in a first region of the waveguide, the second surface defines a plurality of first grating structures configured to diffract light according to a first diffraction pattern,
wherein in a second region of the waveguide different from the first region, the second surface defines a plurality of second grating structures configured to diffract light according to a second diffraction pattern different from the first diffraction pattern,
wherein in a third region of the waveguide different from the first and second regions, the second surface defines a plurality of third grating structures configured to diffract light according to a third diffraction pattern different from the first and second diffraction patterns; and
wherein the second region of the waveguide at least partially encloses the third region of the waveguide;
directing light into the first region of the waveguide;
transmitting at least some of the light from the first region to the second region of the waveguide;
transmitting at least some of the light from the second region to the third region of the waveguide; and
outputting at least some of the light from the third region of the waveguide.