FR3025711A1 - DEVICE FOR MEASURING THE PHYSIOLOGICAL CHARACTERISTICS OF THE EYE, FOR A PATIENT CARRYING GLASSES WITH SHINED GLASSES - Google Patents

Abstract

The present invention relates to a device for measuring the physiological characteristics of the eye for a patient wearing a pair of tinted glasses, comprising: - a gripping means adapted to capture the image of the patient's cornea, and - a source radiation capable of irradiating said cornea of said patient - a processing means capable of analyzing said image, said device being characterized in that said radiation source emits in the infrared and in that said input means is able to capture the radiation infrared.

Description

FIELD OF THE INVENTION The present invention relates to a device for measuring the physiological characteristics of the eye of a patient wearing a pair of glasses. BACKGROUND OF THE INVENTION with tinted lenses. The device according to the invention can in particular be used for all the measurements necessary for centering the glasses (pupillary distance, pupillary height, inclination and curve of the frame, pantoscopic angle, vision deviation of close to 10, segments, values "A, B , D "and glass / eye distance requested by the manufacturers). PRIOR ART In the field of eyewear, various methods and apparatus are known for determining the physiological parameters of a patient in relation to an eyeglass frame. Some of these devices make it possible to automatically record the measurements by means of a camera and to determine the appropriate resulting measurements by means of processing the images obtained. The measurements made then allow an optician to manufacture corrective lenses depending on the patient. The most advanced devices also make it possible to measure the physiological parameters of the eye with respect to a frame in the case of corrective lenses allowing distant vision and near vision. They also make it possible to measure, on the one hand, the distance between the front part of each of the patient's eyeballs and the inner face of each lens of the eyeglass. and on the other hand the good angular positioning of the glasses with respect to the vertical. These devices may be cited those described in FR19940005400 requests JP19970127614, JP19970127618, W01998JP02163, US19990423079, JP19970127620, JP19970127624, JP20060003061, US20020329694, JP20030338257, JP20020350434, DE20001007705, US20000584061, FR19840001451, FR19850000137, DE20001020697, DE20001033983, W02001EP04745, DE20015006898, DE20021016824, FR20010012156, FR20030011613, W02004FR02500, CA20042479064, DE200410045012, W02005EP09949, DE200510003699, W02006EP00695, EP20060706436, FR20060000876, W02007FR50721, FR20060006164, W02007FR51580, EP20070823536, FR20060008036, W020071B02598, EP20070804898, FR20070005475, FR20070006081, W02008FR00966, FR20080002554, FR20080002624, W02009FR00532, EP20090750010, FR20080053890, W02009FR51096, KR20090028480, W02010KR01975, FR20090002254, DE200910025215, W02010EP02821, FR20090005629, W02010FR00778, JP20100077507, FR20100057684, W02011FR52215, FR20100004042, KR20120074085, PT20120106430, W020131B51037 and US20130089552 don t the content is incorporated by reference. A disadvantage of the prior art is that these devices are not suitable for tinted lenses. Indeed, the measurement is based in part on the identification of the reflection of a light source on the surface of the cornea or on the detection of the center of the patient's eye. In the presence of tinted glasses, the image of the cornea is not accessible to the camera and measurement is impossible. The object of the invention is to overcome the disadvantages of the prior art and to propose a device making it possible to measure the physiological parameters of the eye of a wearer of tinted lenses. The object of the invention is also to propose a method comprising the use of said device. The invention also aims to propose a method for modifying the measuring devices of the prior art to adapt them to tinted glasses.

SUMMARY OF THE INVENTION Thus the present invention relates to a device for measuring the physiological characteristics of the eye for a patient wearing a pair of tinted glasses, comprising: a grasping means adapted to capture the image of the cornea of said patient, and processing means adapted to analyze said image, said device being remarkable in that said input means is able to capture infrared radiation. According to an advantageous embodiment of the invention, said device further comprises a radiation source capable of irradiating said cornea of said remarkable patient in that said radiation source emits infrared radiation. It has been observed that the infra-red illumination of the patient's cornea and the image pick-up via an input means capable of recording infrared radiation made it possible to obtain a corneal reflection that can be used for calculating the physiological parameters of the eye itself. in tinted glasses. Furthermore, it has been shown that the use of an input means capable of recording the infrared radiation makes it possible, even in the absence of a source of infrared radiation, to detect the center of the patient's eye. In the context of the present invention, the term "infrared radiation" refers to wavelength radiations comprised between 0.78 μm and 5 mm, preferentially to the wavelength rays. radiation between 0.78pm and 3pm and even more preferably between 780 nm and 900 nm. According to a preferred embodiment of the invention, said radiation source is able to irradiate for a duration of less than 1 ms. According to a preferred embodiment of the invention said input means is also able to capture visible light.

According to a preferred embodiment of the invention, said device further comprises a visible light source. According to a preferred embodiment of the invention, said device further comprises a second input means. According to a preferred embodiment of the invention said device is included in a column intended to rest on the ground. According to a preferred embodiment of the invention, said device is portable. According to a preferred embodiment of the invention said device comprises a positioning element which, during a measurement, is mechanically linked to the pair of spectacles, this positioning element comprising at least one marker, the gripping means being adapted to enter the position of the mark. According to a preferred embodiment of the invention said device comprises a displacement means for adjusting in height the gripping means.

According to a preferred embodiment of the invention, said input means comprises a camera. Said camera can be connected to the rest of the device by a wired or non-wired connection (e.g. wifi). ACP002-FR-13_SUITE NOTI F DI RREG.SO-ML 3025711 - 5 - According to a preferred embodiment of the invention said source of radiation is close to the input means. According to a preferred embodiment of the invention, said source of radiation is placed above or below the input means. The present invention also relates to a method for measuring the physiological characteristics of the eye for a patient wearing a pair of tinted glasses, which comprises the use of a device according to the invention. The present invention also relates to a method for measuring the physiological characteristics of the eye for a patient wearing a pair of tinted glasses, which comprises capturing an infrared image of said wearer. According to a preferred embodiment, the method according to the invention also comprises a step of irradiating the eye wearer's eye with infrared radiation during the capture of said image. According to a still more preferred embodiment, the method according to the invention comprises a step of processing the image captured by a processing means capable of calculating at least one physiological parameter of said eye.

The processing of said image can be performed immediately after shooting or after a certain period of time. It is thus possible to envisage the delayed processing of the images, for example at a daily rate. In the same way, it is conceivable to capture the images and to treat them at the same place via a device according to the invention. Alternatively, it is possible to consider geographically separating the shooting of the image processing. The present invention also relates to a method for modifying a device for measuring the physiological characteristics of the eye for a patient wearing a pair of spectacles, comprising a means of 5 capture able to capture the image of the cornea of said patient, a visible light source capable of illuminating said cornea of said patient and a processing means capable of analyzing image, mage, comprising a step of adding to said device 10 a source of radiation emitting in the infrared and an input means capable of capturing the infrared radiation. In this latter embodiment, the addition of an input means capable of capturing the infrared radiation may in particular be done by replacing the preliminary input means by a gripping means capable of capturing the infrared radiation and possibly the visible light. . In the same way, the addition of a source of radiation emitting in the infrared can in particular be done by replacing the visible light source with a source of radiation emitting in the infrared and possibly visible light. Brief Description of the Drawings FIG. 1 shows the face of a patient equipped with spectacles on which a positioner element has been placed. Figure 2 shows a schematic view of an embodiment of a device according to the invention.

Figures 3 and 4 show another embodiment of a device according to the invention. ACP002-FR-13_SUITE NOTI F Dl RREG.SO-ML 3025711 - 7 - Description of the Embodiments Hereinafter will be described by way of non-limiting example, an embodiment of the present invention, with reference to the drawings. attached.

FIG. 1 shows a patient wearing a pair of spectacles 1 on which a positioner element 2 is placed. The positioner element comprises a substantially horizontal bridge 3 whose ends are each provided with a first branch against which the front face a corrective lens 4 comes into abutment and a second arm resting on the rear face of the corrective lens 4. The positioner element comprises at least one mark 5. In the context of the present invention, the corrective lenses 4 are tinted. The device according to the invention 6 comprises an input means 7, for example a camera or a camera mounted on a column 8 forming a means of displacement adjustable in height. To determine the orientation of the marker 5 of the positioner element 2 during far vision, the device comprises a visual reference element for the patient. This visual reference element is for example placed just above or just below the gripping means 7. It could also be of the annular type encircling the lens of the gripping means 7. It is not necessarily close to the seizing means 7 but could, for example, be attached to a wall behind the gripping means 7. Advantageously, said visual reference element 30 merges with the radiation source capable of irradiating said cornea of said patient. It is thus possible to envisage a means capable of emitting visible light, serving as a visual reference, and also able to emit a short-term infrared radiation (of the type below). flash). Exposure to infrared radiation is advantageously limited to the duration of the image. The device 6 furthermore comprises an image processing means, advantageously in the form of software that will be able to calculate the various physiological parameters of the patient's eye. This calculation uses the markers 5 of the positioner element 2 as a reference. Since the distance between these different marks 5 is previously known, the image processing means can calculate the various parameters such as the pupillary distance, the pupil height, the pantoscopic angle, the near vision deviation and the glass distance. eye from the position of the reflection of the radiation source to the surface of the patient's cornea. The device 6 can accumulate several input means 7 capable of capturing the infrared radiation and / or the visible light as needed. This embodiment allows the device to treat indifferently transparent glasses carriers and tinted glass carriers. The device 6 according to the invention may also comprise a display means (e.g. an LCD) advantageously placed at the back of the column allowing the optician to view the shooting and the result of the calculations. This display means is preferably a touch screen that allows the user to interact with the device 6 according to the invention. The device 6 according to the invention may also comprise printing means and / or information storage means making it possible to store the captured images and the measured parameters. ACP002-FR-13_SUITE NOTI F Dl RREG._SO-ML 3025711 - 9 - As shown in Figure 2, the patient wearing tinted lenses 2 and the positioner element 3 will face the device 6 according to the invention. The grasping means 7 will be moved so as to be at the height of the patient's eyes. The patient will set the visual reference, then the device 6 will trigger infrared radiation and capture of the image of the patient's face. The optician will be able to control, thanks to the display means, the quality of the image captured, the presence of 10 corneal reflections and the marking of the various markers 5. If necessary, the position of the markers 5 and corneal reflections may be corrected by the optician via the touch screen. Once the input image has been validated, the optician will be able to trigger the phase of calculating the physiological parameters of the patient's eye, store them in memory and / or print them. Alternatively, the device 6 according to the invention can be portable (see FIG. 3 and 4) and can be in the form of a touch pad 9 or a smartphone, comprising an input means 7 and an infrared radiation source 10 placed on the front face (FIG. 3) and / or on the rear face (FIG. 4) of said touch pad 9.

This device 6 can be easily obtained by modifying the commercially available touch pads. This modification may notably consist in removing the infrared filter placed in front of the sensors of the gripping means 7 and in adding an additional radiation source 10. This radiation source 10 may advantageously be that described in patent application FR2993997 (modified to transmit in the second embodiment). 'infrared). It is also conceivable to couple the touch pads ACP002-FR-13_SUITE NOTI F DI RREG._SO-ML 3025711 - 10 - (including the smartphones) currently available with an external input means. This external input means can be connected to the rest of the device via a wired or non-wired connection (for example the wifi cameras).

Positioning on the front or rear facade of the input means and the radiation source depends on the desired use. An arrangement on the front panel allows manipulation by the patient who holds the device 6 in his hands.

A positioning on the back cover allows use by the optician who will stretch the device 6 towards the patient. ACP002-EN-13_SUITE NOTI F D9 RREG.SO-ML

Claims (15)

CLAIMS1 - Device for measuring the physiological characteristics of the eye for a patient wearing a pair of tinted glasses, comprising: - a gripping means adapted to capture the image of the cornea of said patient, and - a suitable treatment means analyzing said image, said device being characterized in that said input means is adapted to capture infrared radiation. 2 - Device according to the preceding claim characterized in that it further comprises a radiation source capable of irradiating said cornea of said remarkable patient in that said radiation source emits infrared radiation. 3 - Device according to one of the preceding claims characterized in that said infrared radiation has a wavelength between 780 nm and 900 nm. 4 - Device according to one of claims 1 to 3 characterized in that said radiation source is able to irradiate for a period of less than 1 ms. 25 5 - Device according to one of the preceding claims characterized in that said input means is also adapted to capture visible light. ACP002-EN-13_SUITE NOTI F Dl RREG.SO-ML 3025711 - 12 - 6 - Device according to one of the preceding claims characterized in that it further comprises a visible light source. 5 7 - Device according to one of the preceding claims characterized in that it further comprises a second input means. 8 - Device according to one of the preceding claims 10 characterized in that it is included in a column intended to rest on the ground. 9 - Device according to one of the preceding claims characterized in that it is portable. 10 - Device according to one of the preceding claims, characterized in that it comprises a positioner element which, during a measurement, is mechanically linked to the pair of glasses, this positioning element having at least one mark, the input means being adapted to grasp the position of said mark. 11 - Device according to one of the preceding claims, characterized in that it comprises a displacement means for adjusting the height of the gripping means. 12 - Device according to one of the preceding claims, characterized in that the input means comprises a camera. 30 ACP002-EN-13_SUITE NOTI F Dl RREG._SO-M1 3025711 - 13 - 13 - Device according to one of claims 1 to 12, characterized in that said radiation source is close to the input means. 5 14 - Device according to the preceding claim, characterized in that said radiation source is placed above or below the input means. A method for measuring the physiological characteristics of the eye for a patient wearing a pair of tinted glasses, characterized in that it comprises the use of a device according to one of the preceding claims. 16 - Method for modifying a device for measuring the physiological characteristics of the eye for a patient wearing a pair of spectacles, comprising an input means able to capture the image of the patient's cornea, a visible light source adapted to illuminate said cornea of said patient and processing means adapted to analyze said image, comprising a step of adding to said device a source of radiation emitting in the infrared and a gripping means adapted to capture infrared radiation. 17 - A method for measuring the physiological characteristics of the eye for a patient wearing a pair of tinted glasses, characterized in that it comprises the capture of an infrared image of said wearer. 18 - Method according to the preceding claim characterized in that it also comprises a step ACP002-FR-13_SUITE NOTIF Dl RREG.SO-ML 3025711 - 14 - consisting of irradiating the eye of the wearer glasses with infrared radiation during the seizure of said image. 19 - Method according to claim 17 or 18 5 characterized in that it comprises a step of processing the image captured by a processing means capable of calculating at least one physiological parameter of said eye. AOE002-W-13 _SUITE NOTI wireEc.sanu