US 12,145,337 B2
Method for tinting or decoloring a lens, lens obtainable by the method for tinting or decoloring a lens, lens comprising a tint or decolorization, lens holder and tinting device for tinting a lens
Davide Terzi, Milan (IT); John Feng, Guangdong (CN); and Brolin Li, Guangzhou (CN)
Assigned to Carl Zeiss Vision International GmbH, Aalen (DE); and Carl Zeiss Vision Sunlens China Ltd., Guangdong (CN)
Filed by Carl Zeiss Vision International GmbH, Aalen (DE); and Carl Zeiss Vision Sunlens China Ltd., Guangdong (CN)
Filed on Sep. 28, 2023, as Appl. No. 18/477,211.
Application 18/477,211 is a continuation of application No. PCT/EP2022/058686, filed on Mar. 31, 2022.
Claims priority of application No. PCT/CN2021/084270 (WO), filed on Mar. 31, 2021.
Prior Publication US 2024/0017507 A1, Jan. 18, 2024
Int. Cl. B29D 11/00 (2006.01)
CPC B29D 11/00913 (2013.01) [B29D 11/00432 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A method for producing a lens having a tint gradient, the method comprising:
inserting a lens into a reception unit of a lens holder;
providing an immersion bath containing a fluid;
immersing the lens holder into the fluid; and
rotating the lens holder and the lens inserted into the reception unit around a rotation axis to a predetermined maximum rotation angle,
wherein the rotation axis is located outside the lens and generally perpendicular to a plane of the lens, and
wherein the rotation axis is a same rotation axis for the lens holder and the lens inserted into the reception unit.