US 11,899,216 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 Dec. 7, 2022, as Appl. No. 18/077,030.
Application 18/077,030 is a continuation of application No. 17/082,729, filed on Oct. 28, 2020, granted, now 11,543,664.
Claims priority of provisional application 62/928,798, filed on Oct. 31, 2019.
Prior Publication US 2023/0096804 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
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 2027/014 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0178 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus comprising:
an eyepiece comprising a waveguide positioned to receive light from a light projector and couple the light into the waveguide, the 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.