US 11,668,933 B2
Color corrected back reflection in AR systems
Eitan Ronen, Rechovot (IL); and Elad Sharlin, Mishmar David (IL)
Assigned to Lumus Ltd., Ness Ziona (IL)
Appl. No. 17/758,612
Filed by Lumus Ltd., Ness Ziona (IL)
PCT Filed Nov. 9, 2021, PCT No. PCT/IL2021/051326
§ 371(c)(1), (2) Date Jul. 11, 2022,
PCT Pub. No. WO2022/097153, PCT Pub. Date May 12, 2022.
Claims priority of provisional application 63/111,148, filed on Nov. 9, 2020.
Prior Publication US 2023/0036588 A1, Feb. 2, 2023
Int. Cl. G02B 27/01 (2006.01)
CPC G02B 27/01 (2013.01) [G02B 27/017 (2013.01); G02B 27/0172 (2013.01); G02B 2027/0112 (2013.01); G02B 2027/0178 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method of moderating chromaticity of ambient light in an environment reflected back into the environment by a component comprised in a lens of glasses through which a user of the glasses views the environment, the method comprising:
determining a first set of tristimulus values that characterizes ambient light reflected by the component surface as a function of angle of reflection θ in a bounded span of angles of reflection;
determining a second set of tristimulus values for angles in the bounded span of angles so that light characterized by the second set of tristimulus values combined with light reflected by the component would be perceived substantially as white light; and
providing an optical coating that reflects ambient light from the environment so that the reflected light is substantially characterized by the second set of tristimulus values.