US 12,248,155 B2
Waveguide combiner assemblies for augmented reality or virtual reality displays
Stephen John Rogers, Didcot (GB)
Assigned to Snap Inc., Santa Monica, CA (US)
Appl. No. 18/729,835
Filed by Snap Inc., Santa Monica, CA (US)
PCT Filed Jan. 6, 2023, PCT No. PCT/EP2023/050233
§ 371(c)(1), (2) Date Jul. 17, 2024,
PCT Pub. No. WO2023/138922, PCT Pub. Date Jul. 27, 2023.
Claims priority of application No. 22152685 (EP), filed on Jan. 21, 2022.
Prior Publication US 2025/0013058 A1, Jan. 9, 2025
Int. Cl. G02B 27/01 (2006.01)
CPC G02B 27/0176 (2013.01) [G02B 2027/0154 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A waveguide combiner assembly for an augmented reality or virtual reality display, comprising:
a waveguide combiner, having front and rear surfaces which are each substantially parallel to a waveguide plane, a direction normal to the waveguide plane being a waveguide axis, a distance between the front and rear surfaces along the waveguide axis being a thickness of the waveguide combiner;
a chassis including a support arm for supporting the waveguide combiner, the support arm defining a cavity between front and rear walls of the support arm which are spaced along a first direction by a distance greater than the thickness of the waveguide combiner, the waveguide axis and the first direction defining an offset angle between them which may be zero or non-zero, an edge portion of the waveguide combiner extending into the cavity; and
at least one actively adjustable mounting structure configured to hold a respective point of the edge portion of the waveguide combiner at a selected position relative to the support arm, thereby enabling adjustment of the offset angle.