公开(公告)号：US10823636B2

公开(公告)日：2020-11-03

申请号：US16223719

申请日：2018-12-18

Applicant: Novartis AG

Inventor： Susanne Fechner ,  Roger Biel ,  Marcus Heift ,  Thomas Tonn

IPC: G01M11/02 ,  G01J9/00 ,  G01B9/02 ,  G01N21/45 ,  G01B11/24 ,  G01N21/958 ,  G02C7/04

Abstract: Method for determining the refractive index (n) of a material of a contact lens, in particular of a soft contact lens, the contact lens (1) having a first surface and a second surface defining a lens geometry there between, by measuring the wavefront issued by the contact lens (1) with a wavefront sensor (4), obtaining data of the geometry of at least one section of the contact lens (1) with an optical coherence tomography system (3) and communicating the geometry of the at least one section of the contact lens (1) from the optical coherence tomography system (3) to an analyzer, particularly a computer, and determining the refractive index (n) of the material of the contact lens from the geometry of the at least one section of the contact lens and from the wavefront issued by the contact lens (1).

公开(公告)号：US10175178B2

公开(公告)日：2019-01-08

申请号：US15653070

申请日：2017-07-18

Applicant: Novartis AG

Inventor： Thomas Tonn

IPC: G01B9/02 ,  G01M11/02 ,  G01N21/88 ,  G01N21/958

Abstract: A method for inspecting an ophthalmic lens, such as a contact lens, using Optical Coherence Tomography. The method includes illuminating a sample volume including the lens with a sample light beam which is provided from a light source having a power of at least 2 mW at a wavelength of 1040 nm to 1080 nm and which does not exceed 5 W. In carrying out the method an ophthalmic lens is inspected which has been manufactured such that it comprises scattering centers embedded in and/or on an anterior surface and in and/or on a posterior surface thereof, respectively, and/or distributed throughout a bulk material being delimited by the anterior surface and the posterior surface of the ophthalmic lens. An interference pattern resulting from a superposition of back-scattered light from the sample volume including the ophthalmic lens and a reference light beam provided from the light source may then be analyzed and evaluated.

公开(公告)号：US20170252989A1

公开(公告)日：2017-09-07

申请号：US15448682

申请日：2017-03-03

Applicant: Novartis AG

Inventor： Halina Heidrich ,  Thomas Tonn

IPC: B29D11/00 ,  G01N21/3554

CPC classification number: B29D11/00951 ,  B29C33/70 ,  B29C2033/705 ,  B29D11/00125 ,  B29D11/00259 ,  B29D11/00519 ,  G01N21/3554 ,  G01N25/56

Abstract: A method for determining residual moisture on and/or within a lens forming surface of a mold half includes the steps of carrying out an infrared inspection of at least a central portion of the lens forming surface of the mold half with the aid of an infrared camera, collecting measurement values resulting from the infrared inspection, which represent a degree of residual moisture on and/or within the lens forming surface, comparing the collected measurement values with a predefined threshold value representing a maximum tolerable residual moisture on and/or within a lens forming surface of a reference mold half, and, upon detection of an exceedance of the predefined threshold value representing the maximum tolerable residual moisture, preventing the inspected mold half from being used further.

公开(公告)号：US20150174840A1

公开(公告)日：2015-06-25

申请号：US14573513

申请日：2014-12-17

Applicant: Novartis AG

Inventor： Gabriela Cocora ,  Halina Heidrich ,  Lukas Lomb ,  Thomas Tonn ,  Fabian Kern

IPC: B29D11/00

CPC classification number: B29D11/00125 ,  B29D11/00038 ,  B29D11/0048 ,  B29K2909/08

Abstract: A method for avoiding the entrapment of air bubbles (5) in a lens forming material (4), in particular in a low viscosity lens forming material, in an ophthalmic lens manufacturing process using mold halves (2, 3) each having a lens forming surface (21, 31) comprises electrostatically charging (60) a lens forming surface (21, 31) of the mold half (2, 3) prior to the lens forming surface (21, 31) coming into contact with the lens forming material (4).

Abstract translation: 一种用于避免在透镜形成材料（4）中夹带气泡（5）的方法，特别是在低粘度透镜形成材料中，在使用半透镜（2,3）的眼镜透镜制造工艺中，每个都具有透镜成形 在透镜形成表面（21,31）与透镜形成材料（21,31）接触之前，表面（21,31）包括静电充电（60）模具半部（2,3）的透镜形成表面（21,31） 4）。

公开(公告)号：US10933566B2

公开(公告)日：2021-03-02

申请号：US16110290

申请日：2018-08-23

Applicant: Novartis AG

Inventor： Thomas Tonn

IPC: B29D11/00 ,  B29C33/70 ,  G01B11/06 ,  G01B11/14 ,  G01B11/24

Abstract: A method for determining whether or not a single use mold is acceptable, comprises providing a closed lens mold (1) comprising two lens mold halves, and having a first and a second optical lens molding surface forming a molding cavity (15) and defining a molding cavity thickness therebetween, providing at least one interferometer (3), each having at least one thickness measurement beam (31), providing a lens mold holder (2), positioning the lens mold (1) such that the thickness measurement beam (31) of the interferometer (3) impinges on the lens mold (1) for measurement of the distance between the two molding surfaces surrounding the molding cavity (15), measuring the thickness profile of the molding cavity (15) with the interferometer (3) on at least three positions of the molding cavity (15) of the lens mold (1), comparing the measured thickness profile with a predetermined thickness profile to determine whether or not the lens mold (1) is acceptable.

公开(公告)号：US20180024077A1

公开(公告)日：2018-01-25

申请号：US15653070

申请日：2017-07-18

Applicant: Novartis AG

Inventor： Thomas Tonn

IPC: G01N21/958 ,  G01N21/88 ,  G01B9/02

CPC classification number: G01N21/958 ,  G01B9/02091 ,  G01M11/02 ,  G01N21/8851 ,  G01N2021/9583

Abstract: A method for inspecting an ophthalmic lens, such as a contact lens, using Optical Coherence Tomography. The method includes illuminating a sample volume including the lens with a sample light beam which is provided from a light source having a power of at least 2 mW at a wavelength of 1040 nm to 1080 nm and which does not exceed 5 W. In carrying out the method an ophthalmic lens is inspected which has been manufactured such that it comprises scattering centers embedded in and/or on an anterior surface and in and/or on a posterior surface thereof, respectively, and/or distributed throughout a bulk material being delimited by the anterior surface and the posterior surface of the ophthalmic lens. An interference pattern resulting from a superposition of back-scattered light from the sample volume including the ophthalmic lens and a reference light beam provided from the light source may then be analyzed and evaluated.

公开(公告)号：US09863842B2

公开(公告)日：2018-01-09

申请号：US15245270

申请日：2016-08-24

Applicant: Novartis AG

Inventor： Thomas Tonn

IPC: G01B9/00 ,  G01M11/02 ,  G01M11/08 ,  G02B26/02 ,  G02C7/04

CPC classification number: G01M11/0285 ,  G01M11/08 ,  G02B26/023 ,  G02C7/04

Abstract: Contact lenses often comprise a coating containing water so as to enhance comfort when being worn on the eye. The present invention is useful to determine the water content of the coating of a contact lens. To determine the water content of the coating, the lens having the coating to be measured is arranged under water. The reflectivity of the surface of the lens is then determined with the aid of a Chromatic sensor system.

公开(公告)号：US20170089802A1

公开(公告)日：2017-03-30

申请号：US15245270

申请日：2016-08-24

Applicant: Novartis AG

Inventor： Thomas Tonn

IPC: G01M11/02 ,  G02B26/02 ,  G01M11/08 ,  G02C7/04

CPC classification number: G01M11/0285 ,  G01M11/08 ,  G02B26/023 ,  G02C7/04

Abstract: There is described a method for characterizing an ophthalmic lens, in particular a contact lens, having a front surface and a back surface, which method comprises the steps of: immersing the ophthalmic lens in a fluid selected from the group consisting of water, lacrimal fluid, tear-like fluid, and mixtures thereof, and with the aid of a chromatic sensor system: determining a transition from the fluid to the front surface or to the back surface of the ophthalmic lens to identify the location of the front surface or back surface of the ophthalmic lens, by illuminating at least one segment of the front surface or the back surface of the ophthalmic lens with incident white light; directing light reflected from the at least one segment of the front surface or of the back surface of the ophthalmic lens to a spectrometer; determining a dominant wavelength of the reflected light, which corresponds to the transition from the fluid to the at least one segment of the front surface or the back surface of the ophthalmic lens; at the determined dominant wavelength of the reflected light measuring a reflectivity value of the least one segment of the front surface or the back surface of the ophthalmic lens; optionally repeating the afore-mentioned procedure for further segments on the front surface or the back surface of the ophthalmic lens for measuring reflectivity values of the further segments; storing each measured reflectivity value, comparing each stored measured reflectivity value with a corresponding reference reflectivity value, in particular with a corresponding reference reflectivity value of a front surface or a back surface of a reference ophthalmic lens having known material properties, and from a difference between the respective stored measured reflectivity value of the ophthalmic lens and the corresponding reference reflectivity value determining the quality of the inspected surface of the ophthalmic lens.