Abstract: The disclosure relates to an optical article comprising an optical lens shell having an internal surface, a support element mounting said shell, disposed in a fixed position, and movably mounting a moveable element between a first position and a second position. The optical article further comprises a sealed cavity, placed between the moveable element and the internal surface of the shell. The optical article is switchable between a first configuration, in which the moveable element is passively held against the shell and a second configuration, in which the cavity is filled with a predetermined amount of a fluid altering the propagation of visible light and the moveable element is released from the shell by the pressure exerted by the fluid in the cavity. The disclosure also comprises a corresponding method for controlling said optical article.

Abstract: The disclosure relates to an optical article which comprises a hollow chamber and a separator separating the hollow chamber into a first subspace and a second subspace. The separator comprises an aperture. The optical article comprises a deformable membrane, attached, in the second subspace, along a closed line surrounding the aperture. The optical article is switchable, by deformation of the membrane, between at least three states (ST1, ST2, ST3). Each state corresponds to a different optical function. The disclosure also comprises a corresponding method for switching said optical article between at least two of the three states.

Abstract: Disclosed is a method wherein the following steps are performed: a) the subject is placed in a natural posture, in which at least one of the gaze directions of the subject points to a visual target, b) an image capture apparatus is placed between the head of the subject and the visual target, c) the relative posture of the image capture apparatus and head of the subject is adjusted in order for the pupil of the image capture apparatus to be positioned close to the gaze direction of at least one of the eyes of the subject, d) an image of the head of the subject is captured, and e) the at least one geometrico-morphological parameter is deduced from this image.

Abstract: Disclosed is a binocular optoelectronic device wearable by a user for measuring a light sensitivity threshold of the user, including: a diffuser configured to face eyes of the user; at least one light source for emitting light toward the diffuser. The diffuser includes predetermined parameters allowing to provide a quasi-homogeneous light diffusion to at least one eye of the user from light emitted by the at least one light source.

Abstract: The disclosure relates to an optical article comprising an optical lens shell having an internal surface, a support element mounting said shell, disposed in a fixed position, and movably mounting a moveable element between a first position and a second position. The optical article further comprises a sealed cavity, placed between the moveable element and the internal surface of the shell. The optical article is switchable between a first configuration, in which the moveable element is passively held against the shell and a second configuration, in which the cavity is filled with a predetermined amount of a fluid altering the propagation of visible light and the moveable element is released from the shell by the pressure exerted by the fluid in the cavity. The disclosure also comprises a corresponding method for controlling said optical article.

Abstract: Disclosed is a method wherein the following steps are performed: a) the subject is placed in a natural posture, in which at least one of the gaze directions of the subject points to a visual target, b) an image capture apparatus is placed between the head of the subject and the visual target, c) the relative posture of the image capture apparatus and head of the subject is adjusted in order for the pupil of the image capture apparatus to be positioned close to the gaze direction of at least one of the eyes of the subject, d) an image of the head of the subject is captured, and e) the at least one geometrico-morphological parameter is deduced from this image.

Abstract: The disclosure relates to an optical article which comprises a hollow chamber and a separator separating the hollow chamber into a first subspace and a second subspace. The separator comprises an aperture. The optical article comprises a deformable membrane, attached, in the second subspace, along a closed line surrounding the aperture. The optical article is switchable, by deformation of the membrane, between at least three states (ST1, ST2, ST3). Each state corresponds to a different optical function. The disclosure also comprises a corresponding method for switching said optical article between at least two of the three states.

Abstract: Disclosed is a binocular optoelectronic device wearable by a user for measuring a light sensitivity threshold of the user, including: a diffuser configured to face eyes of the user; at least one light source for emitting light toward the diffuser. The diffuser includes predetermined parameters allowing to provide a quasi-homogeneous light diffusion to at least one eye of the user from light emitted by the at least one light source.

Abstract: A method is implemented by a computer for modifying a non-dioptric parameter of an optical system including a first and a second surface. The method includes a modifying step during which the first surface and second surface are modified so as to obtain a modified optical system such that the dioptric function of the modified optical system is substantially the same as the dioptric function of the optical system.

Abstract: Method for optimizing an optical lens equipment for a wearer Method for optimizing an optical lens equipment for a wearer, the method comprising:—an eye tracking device providing step, during which a spectacle frame mounted eye tracking device is provided to the wearer, —a wearer parameter monitoring step, during which at least one parameter relating to the eyes of the wearer is monitored using the eye tracking device and—an optimization step during which the optical lens equipment is optimized based at least partly on the base of the monitoring of the at least one parameter during the wearer parameter monitoring step.

Abstract: The invention concerns a method for determining a light filter for a spectacle lens for improving or maintaining the visual comfort of an individual wearing spectacles, comprising the steps: a) collecting data relating to the needs or uses of the individual; b1) selecting a test filter on the basis of a predefined criterion; b2) selecting, as a function of the collected data, a luminous scene comprising an image determined as a function of the needs or uses, and a light source generating a visual discomfort for the individual not equipped with a filter; c) placing of the individual by presenting him with the luminous scene through the test filter; d) evaluating said criterion; e) comparing the result with a predetermined threshold; f) determining the suitable light filter as a function of the result. The invention also concerns a display device and a virtual reality helmet designed for said method.

Abstract: The invention provides a method for determining a geometrical parameter of an eye of a subject, such as for determining the position of a center of rotation of the subject's eye, such as for the purpose of personalizing the optical design of corrective ophthalmic lenses, wherein at least two images of the eye are captured with an image capture device while the subject looks in two different gaze directions, and on each image, the pupil and/or the iris of the eye are identified so that a geometrical parameter may be determined for determining a position of a center of rotation of the eye without requiring use of a reference accessory.

Abstract: The invention relates to a device for determining the position of a characterizing point of an eye of a wearer provided with a spectacle frame (400), including: at least one image sensor apparatus (120); and positioning element for positioning the image sensor device relative to the spectacle frame (400), such that, when the spectacle frame is arranged in a useful position on the head of the wearer, the image sensor apparatus is capable of capturing an image of the eye of the wearer; and element for determining the position of a characterizing point of the eye from the at least one image of the eye of the wearer captured by the image sensor apparatus. The invention also relates to a method for determining the position of a characterizing point of an eye of a wearer, a device and a method for determining the direction of the gaze and a method for determining associated areas of wear of an ophthalmic lens.

Abstract: Method for determining an ophthalmic lens which comprises an aspherical continuous layer and an aspherical Fresnel layer. The aspherical continuous layer is supported by one of the faces of the lens, the same holds for the aspherical Fresnel layer.

Abstract: A method is implemented by a computer for modifying a non-dioptric parameter of an optical system including a first and a second surface. The method includes a modifying step during which the first surface and second surface are modified so as to obtain a modified optical system such that the dioptric function of the modified optical system is substantially the same as the dioptric function of the optical system.

Abstract: Disclosed is a method for determining a geometrical parameter of an eye of a subject, including the following steps: a) capturing at least two images of the eye while the subject looks in two different gaze directions thanks to an image capture device; b) identifying, on each image, the image of the pupil and/or the iris of the eye and determining a geometrical feature of the image of the pupil and/or the iris linked to the shape of this image of the pupil and/or iris; c) determining the geometrical parameter of the eye as a function of the geometrical features of the image of the pupil and/or iris determined for each image of the plurality of images.

Abstract: The invention relates to a device for determining the position of a characterizing point of an eye of a wearer provided with a spectacle frame (400), including: at least one image sensor apparatus (120); and positioning element for positioning the image sensor device relative to the spectacle frame (400), such that, when the spectacle frame is arranged in a useful position on the head of the wearer, the image sensor apparatus is capable of capturing an image of the eye of the wearer; and element for determining the position of a characterizing point of the eye from the at least one image of the eye of the wearer captured by the image sensor apparatus. The invention also relates to a method for determining the position of a characterizing point of an eye of a wearer, a device and a method for determining the direction of the gaze and a method for determining associated areas of wear of an ophthalmic lens.

Abstract: Method for optimizing an optical lens equipment for a wearer Method for optimizing an optical lens equipment for a wearer, the method comprising:—an eye tracking device providing step, during which a spectacle frame mounted eye tracking device is provided to the wearer, —a wearer parameter monitoring step, during which at least one parameter relating to the eyes of the wearer is monitored using the eye tracking device and—an optimization step during which the optical lens equipment is optimized based at least partly on the base of the monitoring of the at least one parameter during the wearer parameter monitoring step.

Abstract: Method for determining an ophthalmic lens which comprises an aspherical continuous layer and an aspherical Fresnel layer. The aspherical continuous layer is supported by one of the faces of the lens, the same holds for the aspherical Fresnel layer.

Abstract: A progressive addition lens for a wearer, the optical lens having an addition lower by at least 0.5 diopter to the prescribed addition value of the wearer, wherein for a pupil diameter of 4 mm the modulation transfer function is greater or equal to 0.