US 12,235,452 B2
Angularly selective attenuation of light transmission artifacts in wearable displays
Kevin Messer, Mountain View, CA (US); Joshua Naaman Haddock, Sarasota, FL (US); Hui-Chuan Cheng, Cooper City, FL (US); Vaibhav Mathur, Playa Vista, CA (US); and Clinton Carlisle, Parkland, 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. 18/303,459.
Application 18/303,459 is a continuation of application No. 17/194,086, filed on Mar. 5, 2021, granted, now 11,662,586.
Claims priority of provisional application 62/986,478, filed on Mar. 6, 2020.
Prior Publication US 2023/0258940 A1, Aug. 17, 2023
Int. Cl. G02B 27/01 (2006.01); G02B 25/00 (2006.01); G02B 27/28 (2006.01); G02F 1/01 (2006.01); G02F 1/1335 (2006.01); G02F 1/13363 (2006.01); G02F 1/1337 (2006.01); G02F 1/1343 (2006.01); G02F 1/139 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 25/001 (2013.01); G02B 27/281 (2013.01); G02F 1/0136 (2013.01); G02F 1/133531 (2021.01); G02F 1/133631 (2021.01); G02F 1/133638 (2021.01); G02F 1/133749 (2021.01); G02F 1/133761 (2021.01); G02F 1/134309 (2013.01); G02F 1/1393 (2013.01); G02B 2027/011 (2013.01); G02B 2027/0178 (2013.01); G02F 2413/01 (2013.01); G02F 2413/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method, comprising:
displaying images to a user via an eyepiece stack of a wearable display system to augment the user's field of view of the user's environment;
attenuating transmission of ambient light from the user's environment through the eyepiece stack to the user while displaying the images, the attenuating comprising:
polarizing the ambient light incident on the eyepiece stack to provide polarized ambient light;
using a spatially-varying o-plate having a plurality of domains each having a principal optic axis oriented in a corresponding direction different from the direction of other domains, rotating a polarization state of the polarized ambient light by an amount related to the incident angle of the polarized ambient light and the domain at which the polarized ambient light is incident, the rotating providing polarization-rotated ambient light; and
absorbing at least a portion of the polarization-rotated ambient light to provide attenuated ambient light, an amount of absorption varying depending on an incident angle of the polarization-rotated polarized ambient light and the domain at which the corresponding polarized ambient light is incident; and
combining the attenuated ambient light with light forming the displayed images to provide the augmented field of view of the user's environment.