US 11,867,978 B2
Method and device for determining parameters for spectacle fitting
Tobias Breuninger, Herbrechtingen (DE); Holger Wegendt, Mögglingen (DE); Oliver Schwarz, Ellwangen (DE); and Jeremias Gromotka, Aalen (DE)
Assigned to Carl Zeiss Vision International GmbH, Aalen (DE); and Carl Zeiss AG, Oberkochen (DE)
Filed by Carl Zeiss Vision International GmbH, Aalen (DE); and Carl Zeiss AG, Oberkochen (DE)
Filed on Feb. 9, 2021, as Appl. No. 17/171,043.
Application 17/171,043 is a division of application No. 16/151,068, filed on Oct. 3, 2018, granted, now 11,126,016.
Application 16/151,068 is a continuation of application No. PCT/EP2017/057880, filed on Apr. 3, 2017.
Claims priority of application No. 10 2016 106 121.2 (DE), filed on Apr. 4, 2016.
Prior Publication US 2021/0165250 A1, Jun. 3, 2021
Int. Cl. G02C 13/00 (2006.01)
CPC G02C 13/005 (2013.01) 7 Claims
OG exemplary drawing
 
1. A method for determining parameters for spectacle fitting, comprising:
detecting depth information in relation to a user's head with a depth information detection unit;
determining parameters for spectacle fitting based on the depth information,
wherein the depth information detection unit is a light field camera, a time-of-flight sensor, or a camera-based infrared depth sensor,
wherein an infrared pattern is generated by a projection system and, with a scene thus illuminated being recorded by an infrared camera, a depth of objects in the scene is averaged, or wherein the depth information detection unit operates based on infrared radiation or based on patterns in a visible light range, or wherein the depth information detection unit measures a distance by optical triangulation;
repeating detecting the depth information a number of times;
averaging over a plurality of detected items of depth information; and
rejecting the plurality of detected items of depth information, which satisfy predetermined criteria.