Spectacle lens having a plurality of diffraction structures for light

US10025115B2 · kind B2 · utility

Assignees

• Carl Zeiss Vision International GmbH · DE
• Carl Zeiss AG · DE
• Carl Zeiss Jena GmbH · DE

Inventors

• Rainer Sessner · Roth, DE
• Joerg Petschulat · Jena, DE
• Katharina Rifai · Lörrach, DE
• Peter Klopfleisch · Jena, DE
• Matthias Burkhardt · Erlangen, DE
• Peter Pacher · Leoben, AT
• Timo Kratzer · Aalen, DE
• Herbert Krug · Ludwigshafen, DE

Key dates

• Filing date: Nov 22, 2016
• Grant date: Jul 17, 2018
• Expiry date: Mar 9, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C2202/22
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention is directed to a spectacle lens and includes a body which is transparent or at least partly transparent to light and has a phase object which guides the light incident at an angle of incidence α on a side facing away from an observer into a direction depending on the wavelength λ of the light and the angle of incidence α thereof. The phase object has a multiplicity of diffraction structures, which diffract monochromatic light at a wavelength of 380 nm≤λ≤800 nm with a diffraction efficiency of η≥70% into one and same order of diffraction |m|≥1 when the monochromatic light is incident at an angle of incidence α on the side of the lens facing away from the observer which lies within a diffraction-structure-specific angle interval 15° wide and dependent on the wavelength of the light.