US 12,455,404 B2
Multi-focal optics for wearable heads-up displays
Brian Watson Cranton, Kitchener (CA); Darren Edward Ihmels, Stratford (CA); Ian Andrews, Kitchener (CA); and Lloyd Frederick Holland, Kitchener (CA)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Filed by GOOGLE LLC, Mountain View, CA (US)
Filed on Mar. 18, 2021, as Appl. No. 17/205,410.
Claims priority of provisional application 62/991,133, filed on Mar. 18, 2020.
Prior Publication US 2022/0268970 A1, Aug. 25, 2022
Int. Cl. G02B 3/10 (2006.01); G02B 3/00 (2006.01); G02B 27/01 (2006.01)
CPC G02B 3/10 (2013.01) [G02B 3/0081 (2013.01); G02B 27/0172 (2013.01); G02B 2003/0093 (2013.01); G02B 2027/011 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0178 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A wearable display device comprising:
a light engine configured to output a display light;
a lens including a first region having a first optical power, a second region having a second optical power different from the first optical power, and a first transition region between the first region and the second region, wherein an optical power of the first transition region transitions between the first optical power and the second optical power; and
an optical redirector positioned and oriented to receive the display light from the light engine and redirect display light towards a target area through a region of the lens outside of the first transition region such that the display light does not pass through the first transition region.