公开(公告)号：US20190072784A1

公开(公告)日：2019-03-07

申请号：US16123302

申请日：2018-09-06

Applicant: Novartis AG

Inventor： Steffen Paulekuhn ,  Susanne Fechner ,  Sarah Unterkofler ,  Daniel Kessler ,  EVGENI SCHUMM ,  Matthias Schwab

IPC: G02C7/04 ,  H04N5/232 ,  H04N5/225 ,  H04N5/357 ,  G06T7/50 ,  G01M11/02

CPC classification number: G02C7/04 ,  G01M11/02 ,  G01M11/0221 ,  G01M11/0257 ,  G01N21/958 ,  G01N2021/9583 ,  G06T7/50 ,  H04N5/2254 ,  H04N5/23212 ,  H04N5/357

Abstract: A method for determining the orientation of a contact lens (1) on a lens support (3) comprises the steps of: providing a contact lens (1) having a lens center (2) and a sagittal height (h), providing a lens support (3), arranging the contact lens (1) on the lens support (3), providing a camera system (40) having a depth of field (4) of less than the sagittal height (h), illuminating the contact lens (1) arranged on the lens support (3) with a light beam, focusing the camera system (40) to a set focus corresponding to the expected position of the lens center (2) of the properly oriented contact lens (1) arranged on the lens support (3) with the lens center (2) of the properly oriented contact lens (1) on the lens support (3) being within the depth of field (4) of the focused camera system (40), producing an image (10) of the contact lens (1), scanning the image (10) of the contact lens (1) in at least one image portion (S) of a predetermined size; determining the image defocus of the at least one image portion (S), determining the orientation of the contact lens (1) from the image (10) of the contact lens (1) by comparing the determined image defocus with a predetermined threshold (T).

公开(公告)号：US10048164B2

公开(公告)日：2018-08-14

申请号：US14038071

申请日：2013-09-26

Applicant: Novartis AG

Inventor： Roger Biel ,  Matthias Schwab

IPC: G01B11/06 ,  G01M11/02

Abstract: A method for automated in-line determination of the center thickness of an ophthalmic lens including providing an inspection cuvette (2) having an optically transparent bottom (21) and a concave inner surface (210) and containing the lens immersed in a liquid, providing an interferometer having a light source and a focusing probe (30) focusing light coming from the light source to a set position (310) of the lens. Focusing probe (30) also directs light reflected at the boundary between the back surface of the lens and the liquid as well as light reflected at the boundary between the front surface of the lens and the liquid or at the boundary between the front surface of the lens and the concave inner surface (210) to a detector of the interferometer. The center thickness of the lens is determined using the light reflected at the respective boundary at the back surface and at the front surface of the lens.

公开(公告)号：US10830666B2

公开(公告)日：2020-11-10

申请号：US15797257

申请日：2017-10-30

Applicant: Novartis AG

Inventor： Sarah Unterkofler ,  Susanne Fechner ,  Marcus Heift ,  Matthias Schwab

IPC: G01M11/08 ,  G01N21/95 ,  G01M11/02

Abstract: A method for determining the inversion state of a soft contact lens (1), comprising imaging a soft contact lens having a convex surface (2, 3) and a concave surface (3, 2), a lens center and a lens edge (5) surrounding said soft contact lens (1), the method comprising using an optical coherence tomography system to obtain at least one sectional image of at least a part of the contact lens (1) comprising the lens edge (5), determining a cross-sectional edge geometry of the contact lens (1) extending from the lens edge (5) towards the lens center of the contact lens in the sectional image, the cross-sectional edge geometry corresponding to the convex and concave surface boundaries of the contact lens (1) in the sectional image, selecting a parameter defining the cross-sectional edge geometry of the contact lens (1) imaged and comparing the parameter defining the cross-sectional edge geometry of the contact lens (1) with a predetermined parameter defining a cross-sectional edge geometry of a non-inverted contact lens to determine whether said contact lens (1) is inverted.

公开(公告)号：US20190072499A1

公开(公告)日：2019-03-07

申请号：US16123273

申请日：2018-09-06

Applicant: Novartis AG

Inventor： Sarah Unterkofler ,  Matthias Schwab

IPC: G01N21/958 ,  H04N5/225 ,  G06T7/557 ,  G06T7/00 ,  H04N5/265

Abstract: A contact lens inspection system, in particular for soft contact lenses, comprises a light source (40) for illuminating a contact lens to be inspected; a plenoptic camera (1) for producing an electronic plenoptic image; a processing unit (103) adapted for electronically processing the electronic plenoptic image of the contact lens and configured for refocusing the image.

公开(公告)号：US10591747B2

公开(公告)日：2020-03-17

申请号：US16123302

申请日：2018-09-06

Applicant: Novartis AG

Inventor： Steffen Paulekuhn ,  Susanne Fechner ,  Sarah Unterkofler ,  Daniel Kessler ,  Evgeni Schumm ,  Matthias Schwab

IPC: G01M11/02 ,  G02C7/04 ,  H04N5/232 ,  H04N5/357 ,  G06T7/50 ,  H04N5/225 ,  G01N21/958

Abstract: Disclosed is an inspection and system method and system for determining the orientation of a contact lens on a lens support, particularly in an automated contact lens manufacturing line.

公开(公告)号：US20180120199A1

公开(公告)日：2018-05-03

申请号：US15797257

申请日：2017-10-30

Applicant: Novartis AG

Inventor： Sarah Unterkofler ,  Susanne Fechner ,  Marcus Heift ,  Matthias Schwab

IPC: G01M11/02

Abstract: A method for determining the inversion state of a soft contact lens (1), comprising imaging a soft contact lens having a convex surface (2, 3) and a concave surface (3, 2), a lens center and a lens edge (5) surrounding said soft contact lens (1), the method comprising using an optical coherence tomography system to obtain at least one sectional image of at least a part of the contact lens (1) comprising the lens edge (5), determining a cross-sectional edge geometry of the contact lens (1) extending from the lens edge (5) towards the lens center of the contact lens in the sectional image, the cross-sectional edge geometry corresponding to the convex and concave surface boundaries of the contact lens (1) in the sectional image, selecting a parameter defining the cross-sectional edge geometry of the contact lens (1) imaged and comparing the parameter defining the cross-sectional edge geometry of the contact lens (1) with a predetermined parameter defining a cross-sectional edge geometry of a non-inverted contact lens to determine whether said contact lens (1) is inverted.

公开(公告)号：US20140091016A1

公开(公告)日：2014-04-03

申请号：US14038071

申请日：2013-09-26

Applicant: Novartis AG

Inventor： Roger Biel ,  Matthias Schwab

IPC: G01M11/02

CPC classification number: G01M11/0271 ,  G01B11/0675 ,  Y10T29/54

Abstract: A method for automated in-line determination of the center thickness of an ophthalmic lens including providing an inspection cuvette (2) having an optically transparent bottom (21) and a concave inner surface (210) and containing the lens immersed in a liquid, providing an interferometer having a light source and a focusing probe (30) focusing light coming from the light source to a set position (310) of the lens. Focusing probe (30) also directs light reflected at the boundary between the back surface of the lens and the liquid as well as light reflected at the boundary between the front surface of the lens and the liquid or at the boundary between the front surface of the lens and the concave inner surface (210) to a detector of the interferometer. The center thickness of the lens is determined using the light reflected at the respective boundary at the back surface and at the front surface of the lens.

Abstract translation: 一种用于自动化在线确定眼镜片的中心厚度的方法，包括提供具有光学透明底部（21）和凹入内表面（210）的检查试管（2）并且包含浸没在液体中的透镜，提供 具有光源的干涉仪和将来自光源的光聚焦到透镜的设定位置（310）的聚焦探针（30）。 聚焦探针（30）还引导在透镜的后表面和液体之间的边界处反射的光以及在透镜的前表面与液体之间的边界处或在透镜的前表面之间的边界处反射的光 透镜和凹面内表面（210）连接到干涉仪的检测器。 透镜的中心厚度使用在透镜的背面和透镜的前表面处的各边界处反射的光来确定。