US 10,890,769 B2
Augmented reality display having liquid crystal variable focus element and roll-to-roll method and apparatus for forming the same
Roy Matthew Patterson, Hutto, TX (US); Chulwoo Oh, Cedar Park, TX (US); Ravi Kumar Komanduri, Austin, TX (US); Charles Scott Carden, Austin, TX (US); Michael Nevin Miller, Austin, TX (US); Vikramjit Singh, Pflugerville, TX (US); and Shuqiang Yang, Austin, TX (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Oct. 25, 2018, as Appl. No. 16/171,111.
Claims priority of provisional application 62/577,678, filed on Oct. 26, 2017.
Prior Publication US 2019/0129178 A1, May 2, 2019
Int. Cl. G02B 27/01 (2006.01); G02F 1/29 (2006.01); F21V 8/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/0076 (2013.01); G02F 1/29 (2013.01); G02B 2027/0112 (2013.01); G02F 2001/294 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display device comprising:
a waveguide assembly comprising a waveguide configured to output light to display an image; and
an adaptive lens assembly having a major surface facing a major surface of the waveguide, the adaptive lens assembly comprising:
a waveplate lens; and
a switchable waveplate assembly comprising:
a first non-liquid crystal quarter-wave plate and a second non-liquid crystal quarter-wave plate defining a volume therebetween;
a cell wall extending from the first non-liquid crystal quarter-wave plate to the second non-liquid crystal quarter-wave plate and further defining the volume therebetween; and
a liquid crystal layer disposed in the volume between the first quarter-wave plate and the second quarter-wave plate, wherein liquid crystal molecules of the liquid crystal layer have selectively switchable orientations.
 
2. An adaptive lens assembly comprising:
a waveplate lens; and
a switchable waveplate assembly comprising:
a first non-liquid crystal quarter-wave plate and a second non-liquid crystal quarter-wave plate defining a volume therebetween;
a cell wall extending from the first non-liquid crystal quarter-wave plate to the second non-liquid crystal quarter-wave plate and further defining the volume therebetween; and
a liquid crystal layer disposed in the volume between the first quarter-wave plate and the second quarter-wave plate, wherein liquid crystal molecules of the liquid crystal layer have selectively switchable orientations.