US 11,988,854 B2
Wide field-of-view holographic skew mirrors
Mark R. Ayres, Longmont, CO (US); Adam Urness, Longmont, CO (US); Kenneth E. Anderson, Longmont, CO (US); and Friso Schlottau, Lyons, CO (US)
Assigned to Akonia Holographics LLC, Longmont, CO (US)
Appl. No. 16/089,965
Filed by Akonia Holographies LLC, Longmont, CO (US)
PCT Filed Mar. 1, 2017, PCT No. PCT/US2017/020087
§ 371(c)(1), (2) Date Sep. 28, 2018,
PCT Pub. No. WO2017/176389, PCT Pub. Date Oct. 12, 2017.
Application 16/089,965 is a continuation in part of application No. PCT/US2016/048499, filed on Aug. 24, 2016.
Application PCT/US2016/048499 is a continuation in part of application No. 15/174,938, filed on Jun. 6, 2016, granted, now 10,180,520.
Claims priority of provisional application 62/435,676, filed on Dec. 16, 2016.
Claims priority of provisional application 62/407,994, filed on Oct. 13, 2016.
Claims priority of provisional application 62/318,917, filed on Apr. 6, 2016.
Claims priority of provisional application 62/209,290, filed on Aug. 24, 2015.
Prior Publication US 2019/0179063 A1, Jun. 13, 2019
Int. Cl. G02B 5/32 (2006.01); G02B 5/18 (2006.01); G02B 26/08 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); G03H 1/04 (2006.01); G03H 1/28 (2006.01)
CPC G02B 5/1861 (2013.01) [G02B 5/32 (2013.01); G02B 26/0891 (2013.01); G02B 27/0081 (2013.01); G02B 27/0172 (2013.01); G03H 1/0404 (2013.01); G03H 1/28 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0174 (2013.01); G03H 2001/0439 (2013.01); G03H 2001/0482 (2013.01); G03H 2222/13 (2013.01); G03H 2222/34 (2013.01); G03H 2223/18 (2013.01); G03H 2250/00 (2013.01); G03H 2260/12 (2013.01)] 38 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a layer of medium; and
diffractive gratings in the layer of medium, wherein:
the diffractive gratings are configured to reflect incident light as reflected light, the incident light and the reflected light form an angle bisected by a reflective axis;
the reflective axis varies by less than 1 degree where the incident light is incident upon the layer of medium at a range of internal angles of incidence spanning at least 15 degrees; and
the reflective axis is offset from a surface normal of the layer of medium.