US 12,216,287 B2
Skew mirror auxiliary imaging
Mark R. Ayres, Boulder, CO (US); Adam Urness, Boulder, CO (US); Kenneth E. Anderson, Longmont, CO (US); and Friso Schlottau, Mead, CO (US)
Assigned to Akonia Holographics LLC, Longmont, CO (US)
Filed by Akonia Holographics LLC, Longmont, CO (US)
Filed on Nov. 30, 2023, as Appl. No. 18/524,075.
Application 18/524,075 is a continuation of application No. 16/604,131, granted, now 11,927,765, previously published as PCT/US2018/027748, filed on Apr. 16, 2018.
Claims priority of provisional application 62/486,344, filed on Apr. 17, 2017.
Prior Publication US 2024/0103290 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/01 (2006.01); G02B 5/32 (2006.01); G02B 6/42 (2006.01); G02B 27/28 (2006.01); G03H 1/02 (2006.01); G06F 3/01 (2006.01)
CPC G02B 27/0179 (2013.01) [G02B 5/32 (2013.01); G02B 6/4213 (2013.01); G02B 6/4215 (2013.01); G02B 27/0172 (2013.01); G02B 27/283 (2013.01); G03H 1/0248 (2013.01); G06F 3/013 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0187 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a light source configured to output first light at a first wavelength greater than 700 nm;
a display configured to output second light at a second wavelength less than 700 nm;
a waveguide having a first lateral surface and a second lateral surface opposite and parallel to the first lateral surface, the waveguide being configured to propagate the first light and the second light via total internal reflection between the first and second lateral surfaces;
a medium layer on the waveguide and extending parallel to the first and second lateral surfaces;
a first set of volume holograms in the medium layer and configured to reflect the first light about a first reflective axis offset from a surface normal of the medium layer; and
a second set of volume holograms superimposed with the first set of volume holograms in the medium layer, the second set of volume holograms being configured to reflect the second light about a second reflective axis offset from the surface normal of the medium layer.