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Title:
SPECTACLE LENS HAVING A DIFFRACTION STRUCTURE FOR LIGHT
Document Type and Number:
WIPO Patent Application WO/2019/138089
Kind Code:
A1
Abstract:
The invention relates to a spectacle lens (16, 18) which has a body (36). The body (36) has at least one diffraction structure (38, 40) which extends into the body (36) on a body surface (42, 44). The diffraction structure (38) is formed by a spatial modulation of the refractive index n(x, y) which is dependent on the location (54, 56) in the body surface (42, 44). The spatial modulation of the refractive index n(x, y) in the body (36) is constant. The continuity of the spatial modulation of the refractive index n(x, y) in the body (36) preferably consists of a contiguous region B of the body surface (42), for the diameter (D) of which, defined as the supremum of the metric distance d(x,y) of two arbitrary points (x, y) in the region of the body surface (42), wherein D ≔ sup{d(x, y): x, y ∈ B}, is D ≥ 1mm, preferably D ≥ 10mm, particularly preferably D ≥ 20mm. The diffraction structure converts a spherical light wave, which originates from a point (14, 14 ') on an object surface (28), into a light wave which represents the point (14, 14') on the object surface (28) on an image point (15, 15 ') arranged in an image surface (28') which is optically conjugate to the object surface (28).

Inventors:
TRAPP, Jannik, Michael (Fischergasse 4, Jena, 07743, DE)
JABBOUR, Toufic (Jahnstrasse 39, Aalen, 73431, DE)
DECKER, Manuel (Sickingenstrasse 11, Jena, 07743, DE)
SINGER, Wolfgang (Egerlandstrasse 45, Aalen, 73431, DE)
Application Number:
EP2019/050730
Publication Date:
July 18, 2019
Filing Date:
January 13, 2019
Export Citation:
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Assignee:
CARL ZEISS AG (Carl-Zeiss-Strasse 22, Oberkochen, 73447, DE)
International Classes:
G02C7/06; G02B5/18
Domestic Patent References:
WO2015177370A12015-11-26
WO1999034248A11999-07-08
WO2014064163A12014-05-01
Foreign References:
DE102014209792A12015-11-26
US6091521A2000-07-18
US20130050640A12013-02-28
US20100053711A12010-03-04
US4210391A1980-07-01
Other References:
BERGMANN SCHÄFER: "Lehrbuch der Experimentalphysik", vol. 3, 2004, VERLAG WALTER DE GRUYTER, pages: 437,438
Attorney, Agent or Firm:
GAUSS, Nikolai et al. (Pfiz / Gauss Patentanwälte, Tübinger Str. 26, Stuttgart, 70178, DE)
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