Verfahren zur Herstellung einer Ophthalmischen Linse

Details

Veröffentlichungs-Nr.

EP4799800

Anmeldetag

28. Februar 2025

Veröffentlichung

2. September 2026

Rechtsraum

EP

IPC

B29D11/00, B29C64/112

Abstract

The invention relates to a method of manufacturing a spectacle lens (80), in which a plurality of stacked volume layers VLi, i = 1, 2, 3, ... is generated, each of which is produced from a specific volume layer starting material Mi, i = 1, 2, 3, ... which contains at least one reactive component. According to the invention, the volumetric layer starting material Mi of each volumetric layer VLi, i = 1, 2, 3, ... is subjected to free radical polymerization by means of UV radiation prior to application of the overlying volumetric layer VLi+1, i = 1, 2, 3, ... by means of UV radiation for radical polymerization of the at least one reactive component in the presence of a inhibitor present on a surface of the volume layer starting material Mi in such a way that a volume layer VSi and a surface layer OFSi complementary to the volume layer VSi are formed in the volume layer VLi with the volume layer starting material Mi, wherein in the volume layer VSi , i = 1, 2, 3, ... the cure level of the at least one reactive component assumes at least the value PVSi, i = 1, 2, 3, ... and wherein the following applies to the cure level POFSi, i = 1, 2, 3, ... in the surface layer OFSi: POFSi < PVSi. By applying a volume layer VLi+1, i = 1, 2, 3, ... on the volume layer VLi, i = 1, 2, 3, ... after treating the volume layer starting material Mi therein, the volume layer starting material Mi+1 of the volume layer VLi+1, i = 1, 2, 3, ... is at least partially mixed with the volume layer starting material Mi of the volume layer VLi, i = 1, 2, 3, ... in the surface layer OFSi, i = 1, 2, 3, .... In a transition zone TZi,i+1, i = 1, 2, 3, ... extending from the surface layer OFSi, i = 1, 2, 3, ... of the volume layer VLi, i = 1, 2, 3, ... into the volume layer VLi+1, the volume layer starting material Mi+1 of the volume layer VLi+1 is at least partially mixed with the volume layer starting material Mi of the volume layer VLi in the surface layer OFSi. The mixing is done in such a way that starting from the volume layer VSi the concentration CMi of the volume layer starting material Mi decreases continuously through the surface layer OFSi, i = 1, 2, 3, ... up into the transition zone TZi,i+1 down to a minimum and starting from the volume layer VSi+1 the concentration CMi+1 of the volume layer starting material Mi+1 decreases continuously through the transition zone TZi,i+1, i = 1, 2, 3, ... up into the surface layer OFSi, i = 1, 2, 3, ... down to a minimum.

Anmelder

Firma

Carl Zeiss Vision International GmbH

Land

🇩🇪 Deutschland

Fachgebiete