US 12,228,802 B2
Apparatus and a method for customising an optical lens
Pavel Zakharov, Volketswil (CH); and Michael Mrochen, Zug (CH)
Assigned to Carl Zeiss Vision GmbH, Aalen (DE)
Appl. No. 17/053,894
Filed by VIVIOR AG, Zurich (CH)
PCT Filed Apr. 23, 2019, PCT No. PCT/EP2019/060274
§ 371(c)(1), (2) Date Nov. 9, 2020,
PCT Pub. No. WO2019/219334, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 18172663 (EP), filed on May 16, 2018.
Prior Publication US 2021/0247626 A1, Aug. 12, 2021
Int. Cl. G02C 7/02 (2006.01); A61B 3/00 (2006.01); A61F 2/16 (2006.01); G02C 7/04 (2006.01)
CPC G02C 7/027 (2013.01) [A61B 3/0025 (2013.01); A61F 2/16 (2013.01); G02C 7/025 (2013.01); G02C 7/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for customising an optical lens, the apparatus comprising:
an observation unit adapted to acquire occurrence distributions of visual activities of a user;
a processor adapted to acquire a personal distance profile based on the acquired occurrence distributions; and
an implementation unit adapted to customise the optical lens based on the acquired personal distance profile,
wherein each of the occurrence distributions relates to a specific visual activity of the visual activities,
wherein the personal distance profile includes or is at least one of a statistical distance profile and a preferred distance profile, and
wherein the statistical distance profile is defined as:

OG Complex Work Unit Math
wherein T is the total time of the visual activities, ta is a time spent on a visual activity a of the visual activities A, P is a viewing distance, an optical power or any distance-related parameter, ha (P) is an occurrence distribution for the visual activity, a is the visual activity, and A is the visual activities.