Abstract: A process, phoropter, and an optometry system, the process being for correction of the shift of the optical power of an active lens in a phoropter due to a temperature change over time, the active lens including a container filled with a liquid and having a deformable curvature membrane under the action of an actuator controlled by an optical power control command, the shift being that the active lens provides an actual optical power that is different from the expected optical power corresponding to the optical power control command. A temperature sensor is arranged in and/or on the phoropter to measure the temperature in the phoropter.

Abstract: A method for evaluating the visual acuity of a person using a mobile device having at least a front camera and a screen, the method including a user positioning step during which the user of a mobile device positions himself in front of a mirror at a predefined distance d/2, a mobile device positioning step during which the mobile device is positioned with the front camera of the mobile device facing the mirror, a distance measuring step during which a distance d between the front camera of the mobile device and a virtual image of the mobile device in the mirror is measured, a displaying step during which the screen of the mobile device displays optotypes, and an evaluation step during which the visual acuity of the user is evaluated.

Abstract: The invention relates to a method for determining an ophthalmic lens intended to be worn by an individual, said ophthalmic lens being adapted to provide to the individual a vision correction at at least one given vision gaze direction, said vision correction being based on wearer data including prescription data of the individual, wherein the method comprises the steps of: determining a parameter pertaining to the accommodative dynamics of an eye of the individual, determining said ophthalmic lens based on said wearer data and on the parameter pertaining to the accommodative dynamics of an eye of the individual. The invention also relates to a device for determining the parameter pertaining to the accommodative dynamics of an eye of an individual in the method according to the invention.

Abstract: Disclosed is an apparatus for measuring subjective ocular refraction including a display device configured to display a least one optotype and a refractive optical system arranged between an eye of a viewer and the display device, the refractive optical system having an optical power that can be varied according to a determined minimum step. The display device further includes a unit for varying optical power designed to generate a variation in the spherical and/or cylindrical optical power, such that the display device and the refractive optical system form a first image of the optotype with a first total optical power and, respectively, a second image of the optotype with a second total optical power, the variation in optical power between the first total optical power and the second total optical power being less than the determined minimum step.

Abstract: A method for measuring a distance separating a camera from a reference object including a predetermined number of corners arranged in a pattern and at least two reference points separated by a reference length. The method includes acquiring an image including the reference object with the camera, detecting corners in the image, attributing a class to each corner, based on an orientation of the corner, detecting the reference object in the image based on the corners and attributed classes, placing the reference points in the image based on the corners of the reference object and measuring an imaged length separating the reference points, and comparing the reference length to the imaged length and obtaining the distance separating the camera from the reference object.

Abstract: A method and associated instrument in which an optical system is switched from a first to a second refractive power states, to provide a first, and then a second refraction correction to an eye of a subject, the switching being carried on without interrupting a light beam coming from a target object and transmitted by the optical system to the eye of the subject. The switching is carried on in order to circumvent an intermediate refraction correction that is in between said first and second refraction corrections, or with a speed higher than a given limit.

Abstract: A process, phoropter, and an optometry system, the process being for correction of the shift of the optical power of an active lens in a phoropter due to a temperature change over time, the active lens including a container filled with a liquid and having a deformable curvature membrane under the action of an actuator controlled by an optical power control command, the shift being that the active lens provides an actual optical power that is different from the expected optical power corresponding to the optical power control command. A temperature sensor is arranged in and/or on the phoropter to measure the temperature in the phoropter.

Abstract: This invention concerns a heat treatment device intended to be associated with an intermodal container (3) loaded with logs, comprising a pressurized water steam supply line (1). Said heat treatment device is particular in that it comprises at least one, preferably two, substantially rectilinear tube (2), provided with a plurality of openings distributed over its length and circumference, said at least one tube (2) being intended to be introduced from the rear into said intermodal container (3) loaded with logs, and to be supplied by said pressurized water steam. This invention also concerns a method that can be implemented by means of a device depending on the invention.

Abstract: Disclosed is an apparatus for measuring subjective ocular refraction including a display device configured to display a least one optotype and a refractive optical system arranged between an eye of a viewer and the display device, the refractive optical system having an optical power that can be varied according to a determined minimum step. The display device further includes a unit for varying optical power designed to generate a variation in the spherical and/or cylindrical optical power, such that the display device and the refractive optical system form a first image of the optotype with a first total optical power and, respectively, a second image of the optotype with a second total optical power, the variation in optical power between the first total optical power and the second total optical power being less than the determined minimum step.

Abstract: Intake arrangement for an internal combustion engine for the intake of a liquid medium from a container, having a strainer, via which liquid medium can be taken in from the container, and at least one suction pipe which opens with a first end into the strainer and via which the liquid medium can be delivered towards a suction pump, which interacts with the respective suction pipe. The suction pipe is mounted at a second end that faces away from the strainer such that it can be pivoted about an axis such that the suction pipe follows a movement of the liquid within the container.

Abstract: Intake arrangement for an internal combustion engine for the intake of a liquid medium from a container, having a strainer, via which liquid medium can be taken in from the container, and having at least one suction pipe which opens with a first end into the strainer and via which the liquid medium can be delivered towards a suction pump, which interacts with the respective suction pipe. The suction pipe is mounted at a second end that faces away from the strainer such that it can be pivoted about an axis such that the suction pipe follows a movement of the liquid within the container.

Abstract: The invention relates to a method for measuring the geometric morphometric parameters of a person wearing glasses (21), said method implementing an independent computing device (1, 10) comprising a screen, a target (8, 18), a compact image acquisition system (7, 17) which is provided with a means of determining the inclination thereof, said system (7, 17) being connected to said screen, and a computer for controlling the image acquisition system (7, 17) and processing the images obtained. The main feature of a measuring method according to the invention is that it comprises a step in which the person observes the target (8, 18) placed in a position known to the image acquisition system (7, 17), by rolling his or her head in an upward direction while keeping his or her eyes fixed on the target (8, 18).

Abstract: The invention relates to a method for measuring the geometric morphometric parameters of a person wearing glasses (21), said method implementing an independent computing device (1, 10) comprising a screen, a target (8, 18), a compact image acquisition system (7, 17) which is provided with a means of determining the inclination thereof, said system (7, 17) being connected to said screen, and a computer for controlling the image acquisition system (7, 17) and processing the images obtained. The main feature of a measuring method according to the invention is that it comprises a step in which the person observes the target (8, 18) placed in a position known to the image acquisition system (7, 17), by rolling his or her head in an upward direction while keeping his or her eyes fixed on the target (8, 18).

Abstract: A method of measuring morpho-geometrical parameters of a person wearing eyeglasses includes causing the person to observe a point situated in front at infinity while holding the head naturally on a direction (24) that is substantially horizontal, acquiring a first image of the position of the frame (21) in this first posture, causing the person to observe the target (8, 18) placed in a known position relative to the image acquisition system, by adopting a position that is natural and comfortable and that involves at least a tilting movement of the head; acquiring a second image of the position of the frame (21) in this second posture, determining the positions of the eyes (27) from one of the two images, computer processing of the two images obtained in order to determine the morpho-geometrical parameters of the person, and delivering the results of the measurements.

Abstract: A method of shaping an ophthalmic lens to have a desired outline with a machining device including a blocking support for the ophthalmic lens and at least one first machining tool, the method includes: obtaining an inner cutting limit for the first machining tool; defining an initial blocking position for the ophthalmic lens and its desired outline; calculating whether at least a portion of the desired outline presents a non-zero intersection with the inner cutting limit; defining as the final blocking position either the unchanged initial blocking position if the calculated intersection is zero, or else a blocking position that is modified relative to the initial blocking position so that the desired outline as repositioned using the modified blocking position does not present an intersection with the inner cutting limit associated with the first tool; and blocking and shaping the ophthalmic lens with the desired outline.

Abstract: A device and process for determining the dominant eye of a patient (10), wherein the device includes a target (120), a camera (110) for acquiring an image of the patient's face, and a mask (200) to be positioned in front of the patient's face. The mask includes; a closure face (210) suitable for hiding the target from the patient while enabling the camera to see the patient's face, and a viewing window (220) for the patient to view the target and which is located through the closure face in order to enable the patient to view the target with only one of his two eyes.

Abstract: A method of measuring morpho-geometrical parameters of a person wearing eyeglasses includes causing the person to observe a point situated in front at infinity while holding the head naturally on a direction (24) that is substantially horizontal, acquiring a first image of the position of the frame (21) in this first posture, causing the person to observe the target (8, 18) placed in a known position relative to the image acquisition system, by adopting a position that is natural and comfortable and that involves at least a tilting movement of the head; acquiring a second image of the position of the frame (21) in this second posture, determining the positions of the eyes (27) from one of the two images, computer processing of the two images obtained in order to determine the morpho-geometrical parameters of the person, and delivering the results of the measurements.

Abstract: The device includes: bearing element (55) for the lens (100); element (53) for acquiring a global image (90) of the drill hole (110) of the lens (100) in a lighting direction (D51, A52), or image acquisition direction (A53); element (54) for processing the image when the lens is carried by the carrier element (55). The processing element (54) designed for determining, from the global image of the drill hole (110) the position of center (C1) of the opening of the drill hole (110) that gives onto one of the faces (98) of the lens (100) and/or the transverse dimension of the opening of the drill hole (110) that corresponds to the desired transverse dimension (D).

Abstract: Method of determining the position of a target drill hole to be drilled in a target corrective lens having an expected target outline after shaping, the position being determined from a reference lens having a reference outline and at least one reference drill hole, the method includes: acquiring an image and at least one characteristic of the curvature of the reference lens; determining, in the acquisition plane, the reference distance in projection between the projection of a reference anchor point of the associated reference lens and the reference lens and the projection of a reference drilling point of the reference drill hole calculating the three-dimensional reference distance between the reference anchor point and the reference drilling point as a function of the characteristic of the curvature of the reference lens (100) and of the determined reference distance; and determining the position of the target drilling point for the target drill hole of the target corrective lens as a function of the calcul