US 12,461,364 B2
Multi-depth exit pupil expander
Eric C. Browy, Meridian, ID (US); and Derek Michael Geiger, Miami, FL (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by MAGIC LEAP, INC., Plantation, FL (US)
Filed on Apr. 19, 2023, as Appl. No. 18/303,473.
Application 18/303,473 is a continuation of application No. 17/588,783, filed on Jan. 31, 2022, granted, now 11,662,575.
Application 17/588,783 is a continuation of application No. 16/678,634, filed on Nov. 8, 2019, granted, now 11,269,180, issued on Mar. 8, 2022.
Claims priority of provisional application 62/759,970, filed on Nov. 12, 2018.
Prior Publication US 2023/0258928 A1, Aug. 17, 2023
Int. Cl. G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02B 27/28 (2006.01); G02B 27/42 (2006.01); G06F 3/01 (2006.01)
CPC G02B 27/0081 (2013.01) [G02B 27/0172 (2013.01); G02B 27/286 (2013.01); G02B 27/288 (2013.01); G02B 27/4205 (2013.01); G06F 3/013 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An eyepiece for a head-mounted display device, the eyepiece comprising:
a first progressive optical lens comprising:
a first region having a first optical power, and
a second region having a second optical power different from the first optical power, and
a second progressive optical lens comprising:
a third region having a third optical power, and
a fourth region having a fourth optical power,
wherein the third optical power is an inverse of the first optical power and the fourth optical power is an inverse of the second optical power, and
wherein the eyepiece is configured, during operation of the head-mounted display device, to:
receive light from a light projector,
direct at least a first portion of the light to a user's eye through the first region of the first progressive optical lens to present a first virtual image to the user at a first focal distance, such that the first virtual image is overlaid with the user's environment, and
direct at least a second portion of the light to the user's eye through the second region of the first progressive optical lens to present a second virtual image to the user at a second focal distance different from the first focal distance, such that the second virtual image is overlaid with the user's environment.