US 12,326,564 B2
Convertible waveguide optical engine assembly for head-mounted device
Stephen Pombo, Campbell, CA (US); and Christopher Parkinson, Richland, WA (US)
Assigned to REALWEAR, INC., Vancouver, WA (US)
Filed by RealWear, Inc., Vancouver, WA (US)
Filed on Nov. 16, 2023, as Appl. No. 18/510,960.
Application 18/510,960 is a continuation of application No. 17/552,338, filed on Dec. 15, 2021, granted, now 11,852,822.
Application 17/552,338 is a continuation in part of application No. 17/538,712, filed on Nov. 30, 2021, granted, now 11,940,627.
Claims priority of provisional application 63/220,237, filed on Jul. 9, 2021.
Prior Publication US 2024/0085704 A1, Mar. 14, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/01 (2006.01); G02B 6/00 (2006.01); G02B 6/34 (2006.01); G02B 27/09 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 27/0176 (2013.01); G02B 6/00 (2013.01); G02B 6/34 (2013.01); G02B 27/0101 (2013.01); G02B 2027/0118 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0125 (2013.01); G02B 2027/014 (2013.01); G02B 27/017 (2013.01); G02B 2027/0178 (2013.01); G02B 27/0972 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A waveguide assembly comprising:
a projection assembly adapted to project a source image;
a waveguide having an input portion to receive the source image;
a base to which the projection assembly is secured and from which the waveguide extends and is partially secured; and
an adjustable transparency layer positioned adjacent to a surface of the waveguide, the adjustable transparency layer being adapted to switch between a transparent mode and one or more levels of opacity based on a provided level of external stimulus.