WO2016207412A1 - Vermessen von individuellen daten einer brille - Google Patents
Vermessen von individuellen daten einer brille Download PDFInfo
- Publication number
- WO2016207412A1 WO2016207412A1 PCT/EP2016/064764 EP2016064764W WO2016207412A1 WO 2016207412 A1 WO2016207412 A1 WO 2016207412A1 EP 2016064764 W EP2016064764 W EP 2016064764W WO 2016207412 A1 WO2016207412 A1 WO 2016207412A1
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- WIPO (PCT)
- Prior art keywords
- camera
- lens
- spectacles
- image
- spectacle
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0228—Testing optical properties by measuring refractive power
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C13/00—Assembling; Repairing; Cleaning
- G02C13/003—Measuring during assembly or fitting of spectacles
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/021—Lenses; Lens systems ; Methods of designing lenses with pattern for identification or with cosmetic or therapeutic effects
Definitions
- the invention relates to a device for measuring individual data of spectacles arranged in a measuring position with a left and / or a right spectacle lens.
- the invention also relates to a method for measuring individual data of spectacles arranged in a measuring position.
- a device and a method of the aforementioned type are known from DE 1 238 690 B1. There is described a lensmeter with a spectacle for measuring the vertex power of a lens, which is enclosed in the frame of a pair of glasses.
- WO 2005/121740 A1 discloses a device for testing a light-transparent or light-reflecting optical element with a lighting device and with a camera.
- the inspecting optical element is placed in the device between the illumination device and the camera.
- a multiplicity of patterns is then provided, which undergo a phase shift. From the phase-shifted patterns, a single image is then calculated, are derived from the optical data of the optical element.
- the lenses in the frame of glasses must be correctly positioned and aligned with the eyes of the wearer.
- the correct alignment and positioning is generally required for all lenses.
- Progressive lenses enable spectacle wearers to see clearly in different lent use situations, eg. B. at different distances, only by changing the direction of view without it requires a greater Ak- kommodations justifyges the eyes.
- Individual glasses and / or progressive lenses have one or more reference points, eg. For example, a remote reference point and a near reference point whose position, depending on the situation of use, must be adapted to the location of the pupils of the eyes of a spectacle wearer.
- the near reference point and the far reference point of progressive power lenses are also referred to as the near construction point and the long distance construction point.
- a definition of these points is given in chapters 5.13 and 5.14 of the standard EN ISO 13666: 1998, to which reference is hereby incorporated by reference and the content of which is incorporated in this application.
- Optimal vision with progressive lenses requires that the progressive lenses in a spectacle frame are positioned in front of the spectacle wearer in such a way that the position of the distance and the position of the near reference point with the perspectives of the spectacle wearer when looking into the distance and looking into the eyes Close in line.
- progressive lenses must be permanently provided with at least two markings. These at least two markings, according to the abovementioned standard, must be placed on a progressive lens at a distance of 34 mm and be arranged symmetrically to a vertical plane through the fitting point or prism reference point. These two markings define a local, body-own coordinate system for the spectacle lens.
- both the glass horizontal and reference points such.
- the far and near reference points the so-called fitting point defined in chapter 5.24 of the standard EN ISO 13 666: 1998, or the one in the chapter 14.2.12 of the EN ISO 13 666: 1998 standard, are reconstructed.
- the fitting point is a point on the front surface of a spectacle lens or spectacle lens semi-finished product which, according to the manufacturer, should serve as a reference point for the positioning of the spectacle lens in front of the eyes.
- an optician can determine the distance and near reference point, the fitting point and the prism reference point on the basis of the aforementioned markings or on the basis of figures imprinted on the spectacle lenses and referenced to the markings.
- the prism reference point is according to the standard EN ISO 13 666: 1998 the point indicated by a manufacturer on the front surface of a progressive lens or a semi-finished progressive lens in which the prismatic effects of the finished glass have to be determined.
- this invention particularly so-called lens wearer specific fitting data of glasses, ie data from the group refractive power of a spectacle lens glasses, refractive power distribution of a spectacle lens of the glasses, position of the near reference point and position of the distance reference point of a spectacle lens of the glasses in a coordinate system to the Glasses and thus indirectly to a wearer wearing glasses, is referenced.
- the invention also relates to the position of the at least two markings on a progressive lens according to the standardization standard DIN EN ISO 8980-2: 2004 in a coordinate system which is referenced to the spectacles in which the progressive lens is arranged.
- the object of the invention is to enable the checking of the individual data of a pair of spectacles with eyeglass lenses enclosed therein.
- the device according to the invention for measuring individual data of spectacles arranged in a measuring position with a left and / or a right spectacle lens contains a display for displaying a test structure.
- the device has an image capture device for detecting the test structure with an imaging beam path that passes through the left lens and / or the right lens of the glasses.
- the computer unit contains a computer program which, from the image of the test structure and a known spatial position of the display relative to the image capture device and preferably a known spatial position of the spectacles relative to the image capture device, acquires a refractive power distribution for at least a portion of the left spectacle lens and / or. or the right spectacle lens.
- a device according to the invention for measuring individual data of a pair of spectacles preferably contains a system which defines a known spatial position of the spectacles relative to the image acquisition device for a pair of glasses arranged in the measurement position.
- This system may be in a receptacle of the device for placing the glasses in the measuring position be educated.
- a device according to the invention for measuring individual data of a pair of spectacles may have a device for determining the spatial position of a spectacle arranged in the measurement position relative to the image capture device.
- the device may for example be a holder, for example at least one strap of the spectacles, which fixes the spectacles in a defined spatial position within the device according to the invention.
- the method according to the invention for measuring individual data of a spectacle arranged in a measuring position provides that a test structure is provided, and the test structure is then imaged with an imaging beam path which passes through a left and / or right spectacle lens of the spectacles arranged in the measuring position.
- the refractive power distribution of the left lens and / or the right lens is then determined from the coordinates of the test structure and the captured image of the test structure and preferably from the position of the left lens and / or the right lens relative to the test structure or the image of the test structure, e.g. , B. with a computer program by means of image analysis.
- test structure is preferably two-dimensional, but a test structure in the method according to the invention can also be three-dimensional.
- a three-dimensional test structure e.g.
- the computer program determines the refractive power distribution in a coordinate system referenced to a coordinate system of the spectacles.
- a coordinate system of the spectacles is understood to mean a coordinate system that is stationary relative to the spectacles.
- the computer program of the computer unit it is also possible for the computer program of the computer unit to determine the refractive power distribution in a coordinate system referenced to a coordinate system of the left and / or right spectacle lens.
- the device can also be designed as an image capture device for detecting a portion of the spectacle frame defining a coordinate system of the spectacles of a spectacle arranged in a measurement position.
- An idea of the invention is in particular that the image capture device detects the test structure in an image plane conjugated to the left lens and / or in an image plane conjugate to the right lens.
- the image capture device preferably comprises at least one camera, particularly preferably at least two cameras and very particularly preferably at least three cameras.
- the image capture device can also have a first camera with a first image plane and a second camera with a second image plane, wherein the left lens of a spectacle arranged in a measurement position can be imaged in the first image plane and / or the right spectacle lens of a spectacle arranged in a measurement position the second image plane is mapped.
- the first camera has a camera optic with an optical axis, which the left lens of a arranged in a measuring position glasses interspersed with a left lens
- the second camera has a camera optics with an optical axis, which passes through the right lens of a arranged in a measuring position glasses with a right lens, wherein the optical axis of the camera optics of the first Camera is parallel to the optical axis of the camera optics of the second camera.
- the first camera has a camera optics with an optical axis, which passes through the left lens of a arranged in the measuring position glasses with a left lens
- the second camera has a camera optics with an optical axis, the right lens arranged in a measuring position glasses penetrated with a right lens, wherein the optical axis of the camera optics of the first camera with the optical axis of the camera optics of the second camera includes a stereo angle ⁇ .
- the first camera of the image capture device has a camera optic with an optical axis which passes through the left lens of the glasses arranged in the measurement position and the third camera of the image capture device has a camera optic with an optical axis which right lens of the arranged in the measuring position glasses interspersed, wherein the optical axis of the camera optics of the first camera with the optical axis of the camera optics of the third camera includes a stereo angle a 'and wherein the second camera with the optical axis of the camera optics with the optical axes of the camera optics each include a stereo angle ß.
- the device can also have an illumination device for the provision of illumination light with an illumination beam path which passes through the left lens of a spectacle arranged in a measurement position with a left spectacle lens in the optical axis of the camera optics of the first camera and the right spectacle lens in one Measuring position arranged glasses interspersed with a right lens in the optical axis of the camera optics of the second camera.
- the image capturing device has a camera with an image plane, wherein the left spectacle lens of a spectacle arranged in a measurement position can be imaged in the image plane and / or the right spectacle lens of a spectacle arranged in a measurement position can be imaged in the image plane ,
- the device in this case contains an adjustable reflector, which in a first setting, the illumination light passing through the left lens and / or the right lens of a arranged in a measuring position glasses at least partially through the left lens and / or the right lens reflects back; and in a second setting different from the first setting releases the imaging beam path for detecting the test structure displayed on the display with the image capture device.
- This reflector can z. B. on a preferably motor-driven rotatable disc may be arranged, which has at least one light-transmissive sector.
- the invention also extends to a system for checking individual data of glazed spectacles with a device given above. Such a system comprises an apparatus as mentioned above. In order to check individual data, individual data of spectacles are measured in the system and the measured data are compared with a desired value of the corresponding data.
- the invention also extends to and a computer program product with a computer program for providing a test structure and / or for acquiring an image of the test structure with an imaging beam path which passes through a left and / or right lens of the spectacles arranged in the measurement position, and / or for determining the refractive power distribution of a left-hand lens and / or a right-hand lens of spectacles with a computer unit.
- a device for determining the UV absorption behavior of a right and / or left spectacle lens of the spectacles in a system for checking individual data.
- a camera recorded data on a situation-dependent pupil position in a fixed to the glasses of a spectacle wearer coordinate system with the determined in a device above individual data, in particular spectacle carrier specific relationship to make a statement about whether the left and / or right lens in the glasses is correctly inserted and there has a proper fit.
- the device for measuring individual data comprises a pair of glasses arranged in a measuring position with a left lens and / or a right lens, at least
- an illumination device for generating UV light optionally an illumination device for generating UV light
- a reflector optionally a reflector, which comprises at least one visible light, preferably illumination light, transmissive region, and at least one region, on which light, preferably illumination light, is reflected back,
- an image capture device for detecting the, preferably stationary, test structure comprising at least one camera, preferably at least two cameras,
- the device for measuring individual data comprises a spectacle arranged in a measuring position with a left lens and / or a right spectacle lens, at least
- a display for displaying a preferably stationary, preferably two-dimensional, test structure
- a reflector which is suitable for light, preferably visible light, particularly preferably illuminating light, permeable and non-transparent comprises permeable regions, wherein the reflector is preferably arranged between the display and spectacles to be measured and is preferably rotatable,
- an image capture device for detecting the, preferably stationary, preferably two-dimensional, test structure comprising at least two cameras
- a computer unit having a computer program which, from the image of the preferably rigid test structure and a known spatial position of the display relative to the image capture device, acquires at least the power distribution for at least a portion of the left lens and / or the right lens Spectacle lens and optionally determines the spatial position of permanent markers in the left lens and / or right lens.
- the device for measuring individual data of a spectacle arranged in a measuring position comprises at least one spectacle lens and / or a right spectacle lens
- a display for displaying a, preferably stationary, preferably two-dimensional test structure
- Spectacle lens these systems preferably being on the support for the spectacles,
- an image capture device for acquiring the, preferably stationary, preferably two-dimensional, test structure, comprising at least one camera, preferably at least two cameras, and d) a computer unit with a computer program which, from the image captured by the image capture device, preferably - fixed, preferably two-dimensional, test structure and a known spatial position of the display relative to the image capture device and optionally a known spatial position of the glasses relative to the image capture device determines at least the refractive power distribution for at least a portion of the left lens and / or the right lens.
- FIG. 1 shows a first device for measuring individual data of a pair of glasses with an image capture device having a first and a second camera;
- FIG. 2 shows a partial view of the device from FIG. 1 as a section
- FIG. 3 shows a lens of a progressive lens with markings which define a local coordinate system
- 4 shows glasses with a measuring bracket for determining the pupil position in an observer
- 5 shows an embodiment of a reflector disk in a device for measuring individual data of a pair of spectacles
- FIG. 6a and 6b show alternative embodiments for a reflector disk in a device for measuring individual data of a pair of spectacles;
- FIG. 7 shows a second device for measuring individual data of spectacles;
- FIG. 6a and 6b show alternative embodiments for a reflector disk in a device for measuring individual data of a pair of spectacles;
- FIG. 7 shows a second device for measuring individual data of spectacles;
- FIG. 6a and 6b show alternative embodiments for a reflector disk in a device for measuring individual data of a pair of spectacles;
- FIG. 7 shows a second device for measuring individual data of spectacles;
- FIG. 8 shows a third device for measuring individual data of a pair of glasses with an image capture device which contains only one camera;
- FIG. 9 shows a fourth device for measuring individual data of a pair of spectacles with an image capture device which has a first, a second camera and a third camera;
- Fig. 1 1 is a partial view of the device of Figure 9 as a section.
- FIG. 12 shows a flowchart about the measurement of individual data of a pair of spectacles with a device according to the invention.
- the apparatus 10 shown in FIG. 1 is used for measuring individual data of a pair of spectacles 14.
- the apparatus 10 has a receptacle 12 for placing a pair of spectacles 14 to be measured with a left and right spectacle lens 16, 18 in a measuring position on a system 15 for the glasses 14.
- the system 15 for the glasses 14 has a system 20 for the left lens 16 and a system 22 for the right lens 18. In the measuring position, the left lens 16 is applied to a system 20 and the right lens 18 to a system 22.
- the measuring position of a seat 12 arranged in the glasses 14 is clearly defined.
- a modified embodiment of the device 10 and a system 15 may be provided which has one or more facilities, where a arranged in the receptacle 12 glasses 14 with the frame or a frame part or a lens edge and a left 16 or right lens 18 rests.
- a system 15 can also be provided on which a frameless spectacle with a spectacle lens edge of at least one spectacle lens of the spectacles 14 rests.
- the device 10 there is a planar display 24 for displaying a two-dimensional test structure 25.
- the device 10 contains an image capture device 26.
- the image capture device 26 has a first camera 28 and a second camera 30.
- the first camera 28 and the second camera 30 each have a camera optics 32, 34 which are suitable for detecting the test structure 25 displayed by the display 24 in an image plane 36, 38 with an image sensor 40, 42 in the first and the second Camera 28, 30 is designed.
- the camera optics 32 of the first camera 28 in this case has an optical axis 44, which passes through the left-hand spectacle lens 16 of a spectacle 14 arranged in the measuring position in the receptacle of the device 10.
- the camera optics 34 of the second camera 30 have an optical axis 46 which extends through the right-hand lens 18 of a pair of spectacles 14 arranged in the measurement position in the receptacle of the device 10.
- a system 15 on which the glasses 14 rests with its frame or on the one to be measured in the device 10 glasses 14 on their cameras 28, 30 side facing is applied.
- the optical axes of the first camera 28 and the second camera 30 are parallel to each other.
- the apparatus 20 for the left-hand spectacle lens 16 and the apparatus 22 for the right-hand spectacle lens 18 in the apparatus 10 are located at or near a reference surface 50, 52 passing through the spectacle lens 16 and the spectacle lens 18, respectively, to the image plane 36, 38 of the first and second camera 28, 30 is approximately conjugate.
- D. h. The image plane 36 of the camera 28 is sharply imaged by means of the camera lens 32 in the reference surface 50 and the image plane 38 of the camera 30 by means of the camera optics 34 in the reference surface 52nd
- the system 20 and the system 22 are arranged in the device 10 so that the markings formed as a rule permanent engravings according to the standardization standard DIN EN ISO 8980-2: 2004 on the left and right lenses 16, 18 of the glasses 14 in the conjugate Layers 50 and 52 or close to these levels.
- the depth of field of the camera optics 32, 34 of the first camera 28 and the second camera 30 in the device 10 is adapted to the position of the display 24 such that a pattern displayed therewith in the image planes 36, 38 of the first camera 28 or the second camera 30 is still resolved. That is, a distribution of brightness caused by the pattern displayed on the display 24 in the image planes 36, 38 of the first camera 28 and the second camera 30, respectively, can be mathematically reversibly unambiguously reflected in the brightness distribution of the image displayed on the display 24 - ters be transferred.
- the pattern displayed on the display 24 may be e.g. B. may be a dot pattern, with the first and second cameras 28, 30 respectively enabling the center of the dots in the pattern to be determined. It should also be noted that instead of a dot pattern on the display 24 in principle, line patterns can be displayed, on the basis of which then preferably using deflektometric evaluation techniques optionally not only absolutely, but also phase-shifting the optical effect of the left and right lenses 16, 18 a in the device 10 arranged glasses 14 is determined.
- the image capturing device 26 in the device 10 is thus designed to record the left and right spectacle lenses 16, 18 of the spectacles 14 by means of the image sensors 40, 42 in the cameras 28, 30 and to display the image displayed on the display 24 Test structure 25 with an imaging beam path, which is guided by the left and the right spectacle lens 16, 18.
- the camera optics 32, 34 are focused in the device 10 on the spectacle lenses 16, 18 resting on the abutment 20, 22 in the receptacle 12. However, the camera optics 32, 34 thereby ensure a depth of field which ensures the sharp detection of the test structure 25 with an imaging beam path penetrating the lenses 16, 18 in the image planes 36, 38 of the image sensors 40, 42.
- the device 10 includes a lighting device 54 for providing illumination light with an illumination beam path 56, 58, the left and right lenses 16, 18 of the glasses 14 to be measured in the optical axis 44, 46 of the camera lens 32 of the first camera 28 and Camera optics 34 of the second camera 30 passes through.
- the illumination device 54 has light sources 57, 59 for generating illumination light for this purpose.
- first beam splitter 60 which is positioned between the camera optics 32 of the first camera 28 and the left spectacle lens 16 of a pair of spectacles 14 arranged in the measurement position, and has a second beam splitter 62 which extends between the camera optics 34 of the second camera 30 and the right lens 18 of an arranged in the measuring position glasses 14 is located.
- a rotatably mounted reflector disk which acts as an adjustable reflector 76.
- the reflector disk has sectors 77 that illuminate the illumination light of the illumination device 54 through the left and right spectacle lenses 16, 18, respectively back to the first camera 28 and to the second camera 30 in the image capture device 26.
- the sectors 79 of the reflector disk are permeable to the light of the illumination device 54.
- the reflector disk can be moved about a rotation axis 80 by means of a motor drive 78.
- the device 10 also has a further illumination device 81 with light sources 83 for generating UV light.
- the illumination device 81 is designed for the provision of UV light with a radiation path which passes through the left and right spectacle lenses 16, 18 of a spectacle 14 arranged in the receptacle 12 of the device 10 in the measurement position.
- the illumination device 81 serves to determine the UV absorption behavior of the spectacle lenses 16, 18 of a spectacle arranged in the receptacle 12 of the device 10 by means of the image sensors 40, 42 of the cameras 28, 30.
- the latter has a computer unit 82.
- the computer unit 82 contains a computer program which comprises the image of the spectacles 14 and the test structure 25 and the relative position of the display 24 and image capture device 26 and the relative position of the image capture device 26 and the attachment 20 for the left spectacle lens 16 as well as the image acquisition device 26 the relative position of image capture device 26 and the system 22 for the right lens 18 a referenced to a coordinate system 85 of the glasses 14 refractive power distribution for at least a portion of the left lens 16 and at least a portion of the right lens 18 in a fixed to the device 10 coordinate system 84th certainly.
- FIG. 2 is a partial view of the device 10 in the form of a schematic section along the line II - II of Fig. 1 and serves to explain how the computer program in the computer unit 82, the refractive power distribution for the left lens 16 and the right lens 18 determined in the device 10.
- the computer program in the computer unit 82 contains an algorithm which calculates the local distortion of the test structure 25 from the difference image of the image captured by the camera 28 if no spectacles are arranged in the receptacle 12 of the device 10 from FIG. 1 and if there is one Glasses 14 is located. From the calculated distortion, deflection angles for the light rays reflecting the test structure 25 are then determined.
- the computer program determines the local deflection angle .alpha Light rays ray_r, which pass from the individual points P gr id of the test structure 25 displayed on the display 24 through a spectacle lens 16, 18 in the camera 28 and 30, respectively.
- the reference surfaces 50, 52 are each used here as virtual break levels.
- the computer program in the computer unit 82 evaluates the distortion of the image of the test structure 25 displayed on the display 24 in the image plane 38 of the camera 30.
- the computer program calculates the center of gravity of each point P ca m in the image plane 36, 38 a camera 28, 30. From these points P ca m determined, the computer program then focus the light beams in the form of vectorial ren ray_in. The centroid beams ray_in intersects the computer program with the plane of the display 24. In this way, the calculates Computer program in the Ebne of the display 24 a plurality of virtual observation points P V irtueii the test structure 25th
- the storage ⁇ P gr d - P virtueii of a point Pgrid displayed on the display 24 from the corresponding virtual observation point Pvirtueii describes the displacement of the point Pgrid caused by the optical action of the spectacle lens 16 or 18.
- the computer program determines from the known relative position of the systems 20, 22 in the device 10 with respect to the display 24 and the image planes 36, 38 of the camera 28 and 30, respectively Place Ppmfiing, where a light beam emanating from the display 24 passes through a corresponding spectacle lens 16, 18.
- each local beam deflections of the light rays can be determined with the computer program in the computer unit 82 then, which pass through the lenses 16, 18, arranged in the device 10 glasses fourteenth From this, the computer program then determines the crushing force distribution, which corresponds to one of the spectacle lens 16 and the spectacle lens 18 caused local beam deflections of these light rays.
- the refractive power distribution of the left spectacle lens 16 and / or the right spectacle lens 18 becomes relative to the coordinates of the test structure 25 and the captured image of the test structure 25 and the position of the left spectacle lens 16 and / or the right spectacle lens 18 determined to the test structure 25 and the image of the test structure 25.
- the computer program also preferably takes into account parameters of the spectacle lenses 16, 18 of a spectacle 14 to be measured, which are specific to the spectacle lenses 16, 18, such as their edge parameters, the ratio of the radii, the center thickness, the edge thickness or even radii gradations. Such parameters may also include information about the center and edge thickness of a Contain spectacle lenses, which has a known diameter.
- a specific parameter for a spectacle lens 16, 18 can also be the edge density defined by way of the frame of spectacles into which a spectacle lens is inserted.
- a specific parameter for a spectacle lens 16, 18 can also be the curvature radii of an optically effective surface.
- the device 10 also makes it possible to use the camera pair formed by the first camera 28 and the second camera 30 to acquire stereometric data on the spectacle lenses 16, 18 arranged in the spectacles 14, on the one hand information about the form , z. B. the ratio of the radii of curvature of front and back or information about the glass thickness can be determined, and on the other hand information about the position of a spectacle lens 16, 18 in a pair of spectacles 14 and / or the refractive index of the material of the spectacle lens.
- FIG. 3 shows a spectacle lens 16 of progressive spectacles with markings 86, 88 in accordance with the standardization specification DIN EN ISO 8980-2: 2004, which define the local spectacle lens coordinate system 90.
- the position of the near reference point 92 and the far reference point 93 are indicated on the spectacle lens 16.
- the information provided on an unrendered spectacle lens by the manufacturer is removed by an optometrist as far as possible before the glass is inserted into a spectacle frame. This has the consequence that z. B. the location of the near and far reference point 92, 93rd a spectacle lens 16 can be determined after insertion into the socket of a pair of glasses 14 only with relatively high effort.
- the markers 86, 88 defining the local lens coordinate system 90 are permanent markers and act as phase objects for the light, which are difficult to see with the naked eye.
- FIG. 4 shows an observer 94 with spectacles 14 and a measuring bracket 96 fixed thereto, which serves to adjust the fitting parameters for the left and right spectacle lenses 16, 18 in the form of the pupil distance and the required position of the near reference point 92 and the distance reference point 93 in FIG a fixed to the glasses 14 coordinate system 85 to determine.
- fitting parameters can, for. B. by the observer 94 with a camera (not shown) in a viewing direction in the vicinity and a line of sight into the distance and the position of the pupils is then determined by means of image processing in the fixed to the glasses 14 coordinate system 85 ,
- the device 10 shown in FIG. 1 is designed to detect the position of the markings 86, 88 and thereby reference the spectacle lens coordinate system 90 defined by these markings 86, 88 to the coordinate system of the spectacles 14.
- FIG. 5 shows an embodiment of the rotatable reflector disk usable in the device of FIG. 1.
- the reflector disk has markings 100 which extend in an arcuate manner in the sections of the light-reflecting sectors 77.
- the position of these markers 100 is detected with a light barrier 102, which is connected to the computer unit 82 and which acts as a rotation sensor.
- This rotation sensor is used for synchronizing the image acquisition by means of the cameras 28, 30 in the image capture device 26 due to trigger signals, which indicate the rotational position of the reflector disc.
- phase object of the markings 86, 88 on the spectacle lenses 16, 18 is that the light is scattered more strongly there than in the remaining areas of the spectacle lenses 16, 18.
- these can then be detected by means of the first and the second camera 28, 30 as dark structures on a light background.
- a test structure 25 displayed on the display 24 can be detected by means of the cameras 28, 30.
- the computer unit 82 By evaluating the images of the cameras 28, 30 as a function of the rotational position of the reflector disk by means of the computer unit 82 can be in the Ko- Ordinatensystem 84 of the device 10, the distribution of the refractive power for the left and right lenses 16, 18 of a receptacle 12 arranged in the Bille 14 are determined. In addition, it is thus possible, by means of the device 10, to reference the spectacle lens coordinate system 90 for the left and right spectacle lenses 16, 18 of the spectacles 14 to the coordinate system 84 of the apparatus 10 and to the coordinate system 85 of the spectacles 14.
- the cameras 28, 30 have adjustable camera optics 32, 34 which focus alternately on the display 24 and the left and right spectacle lenses 16, 18 of the spectacles 14 by means of an autofocus system and depending on the rotational position of the reflector disc become. This measure ensures sharp imaging of the test structure 25 displayed on the display 24 and of the markings 86, 88 on a pair of left and right spectacle lenses 16, 18 of the spectacles 14.
- FIGS. 6a and 6b show alternative embodiments of an adjustable reflector 76 ', 76 "with a reflector disk for a device 10, with which individual data of a pair of spectacles 14 can be measured
- the cameras 28, 30 have the Image capture device 26 'to each other inclined optical axes 44, 46 which form an acute angle ⁇ .
- the image capture device 26' can here on the image planes of the image sensors 40, 42 of the cameras 28, 30 overlapping portions of the lenses 16, 18 in the on If the eyeglasses arranged on the device 1 10 were to be detected, the eyelets described with reference to FIG detections 86, 88 on a spectacle lens 16, 18, a strip pattern is displayed on the display 24, which has a varying spatial phase and which extends in different directions. From the captured by the cameras 28, 30 image of these stripe pattern is then such. For example, in US 8,081, 840 B2 described in particular in Sp. 5, Z.
- phase amplitude image calculated in the computer unit 82, a deflektometrisches phase amplitude image .
- This calculated phase amplitude image has a contrast that is so large that the data set of these calculated phase amplitude images contains, in particular, the information of the position of the markers.
- Fig. 8 shows a third device 210 for measuring individual data of a pair of spectacles 14.
- the components of the device 1 10 correspond to the components of the device 10 described above, these are identified by the same numbers as reference numerals.
- the device 210 has an image capture device 26 ", in which there is only a camera 28 with a camera optics 32 having an optical axis 44, which is arranged in the receptacle 12 of the device 210 glasses 14 between the first lens 16 and the second lens 18 interspersed.
- FIG. 9 shows a fourth device 310 for measuring individual data of spectacles 14.
- the components of the device 310 correspond to the components of the device 10 described above, these are indicated by the same numbers as reference numerals.
- the device 310 has a receptacle 12 for arranging a pair of spectacles 14 to be measured with a pair of left and right spectacle lenses 16, 18 in a measuring position for the spectacles 14.
- a planar display 24 for displaying a two-dimensional test structure 25.
- the device 310 has an image capture device 26 "'in which there are three cameras 28, 28' and 28".
- the camera optics 32, 32 ', 32 have mutually inclined optical axes 46, 46' and 46".
- the camera optics 32, 32 ', 32 "in the device 310 each have focal planes which are the reference surfaces 50, 52 passing through the right and / or the left spectacle lenses 16, 18 of the spectacles 14 cut or on the left or right lens 16, 18 of the glasses 14 and abut the reference surfaces 50, 52.
- the depth of field of the camera optics 32, 32 ', 32 "in the device 310 is adapted to the position of the display 24 such that a pattern displayed thereby in the image planes 36, 36', and 36" is still resolved. That is, a brightness distribution caused by the pattern displayed on the display 24 in the image planes 36, 36 ', and 36 "of the first, second, and third cameras 28, 28', and 28" may be mathematically reversibly uniquely determined the brightness distribution of the displayed on the display 24 pattern are transferred.
- the image field 128 of the first camera 28, the image field 128 'of the second camera 28' and the image field 128 "of the third camera 28" can be seen with a spectacle 14 arranged in the device 310 for measuring.
- the image fields 128, 128 'and 128 "of the cameras 28, 28' and 28" overlap and cover the lenses 16, 18 of a arranged in the receptacle 12 of the device 310 glasses 14 completely and ensure that one on a lens 16, 18 Marking 86, 88 formed as a permanent marking lies in the overlapping image fields 128, 128 'or 128', 128 "of at least two cameras 28, 28 'on the one hand and 28' and 28" on the other hand.
- Computer unit 82 in device 310 is a device for determining the spatial position of spectacles 14 arranged in receptacle 12 relative to image acquisition device 26 '".
- the computer program in the computer unit 82 in the device 310 likewise contains an algorithm which calculates the local distortion of the test structure 25 from the differential image of the image captured by the camera 28 if no spectacles are arranged in the receptacle 12 of the device 310 from FIG and if there is a pair of glasses 14. From the calculated distortion, deflection angles for the light rays reflecting the test structure 25 are then determined.
- the Reference surfaces 50, 52 are used as virtual breaking planes, which in the present case are curved.
- the computer program determines local deflection angles a, a' and a" of the light beams ray_r1, ray_r2 and ray_r3, which are indicated by the individual points P gric i of the display 24 Test structure 25 through a lens 16, 18 in the camera 28, 28 'and 28 "reach.
- This deflektometric evaluation method thus utilizes the fact that the spatial coordinates x, y, z of each point P gr id indicated on the display 24 are known.
- the computer program in the computer unit 82 calculates, as described with reference to the devices 10, 110 and 210 described above, focused light beams in the form of vectors ray_in1, ray_in2 and ray_in3.
- the focused light beams ray_in1, ray_in2 and ray_in3 intersect the computer program with the plane of the display 24.
- the computer program in the plane of the display 24 calculates a multiplicity of virtual observation points P V irtueii of the test structure 25.
- the storage ⁇ P gr d - P virtueii of a point Pgnd displayed on the display 24 from the corresponding virtual observation point Pvirtueii describes the displacement of the point P gr id caused by the optical action of the spectacle lens 16 or 18.
- the computer program determines from the known relative position of the left and right spectacle lenses 16, 18 in the device 310 with respect to the display 24 and the image planes 36, 36 ', 36 ". of the cameras 28, 28 ', 28 "then the location Ppmfiing, at which a light beam emanating from the display 24 passes through a corresponding spectacle lens 16, 18. From the three points ppmfiing, pvirtueii and pgnd are using the computer program in the Computer unit 82 on each of the local beam deflections in turn determined for the light rays, which enforce the lenses 16, 18 arranged in the device 310 spectacles 14. From this, the computer program then determines the refractive power distribution which corresponds to one of the local beam deflections of these light beams caused by the spectacle lens 16 or the spectacle lens 18.
- the refractive power distribution of the left-hand spectacle lens 16 and / or the right-hand spectacle lens 18 is again from the coordinates of the test structure 25 and the acquired image of the test structure 25 and optionally from the position of the left spectacle lens 16 and / or the right spectacle lens 18 relative to the test structure 25 and the image of the test structure 25, respectively.
- the measurement accuracy for determining the refractive power distribution of left and right spectacle lenses 16, 18 in spectacles 14 can be further increased, in which not only three, but four, five, six, or even more cameras with camera optics have inclined optical axes, are used in a device for measuring individual data of glasses.
- the devices 10, 10, 210 and 310 described above can be used in a system for checking individual data of glazed spectacles to determine whether the centering of a spectacle lens in the frame of a pair of spectacles with those determined during refraction and adaptation spectacle-specific fitting parameters with regard to pupillary distance R / L and height of the pupils.
- a system can, for. B. include a device for evaluating the arrangement of a right and / or left lens of the spectacles, taking into account a measured refractive power distribution in a stationary coordinate system to the glasses.
- Such a system may also include a device for the have a spatially resolved refractive power of the right and / or left lens of the glasses with nominal values.
- the flowchart 150 shown in FIG. 12 is illustrative of how, in such a system, the refractive power distribution and the detection of the spatial location of permanent engravings on spectacle lenses 16, 18 are measured by measuring a pair of spectacles disposed in the apparatus 10, 10, 210, and 310 14 can be combined with data about a situation-dependent pupil position of the eyes of a spectacle wearer and with the information of desired data on a lens design in such a system.
- Such a system makes it possible to check whether the axis position of the glasses in the spectacle frame is correct.
- Such a system also makes it possible to find out whether the measured values agree with the ordered values.
- Such a system also makes it possible to make a statement as to whether a spectacle lens has been correctly and stress-free incorporated into the frame of a pair of spectacles. With such a system, it can be recognized whether an impact distribution measured therein corresponds to the expected distribution of effect over the surface, whether the pupil position matches the refractive power distribution of the spectacle lens and whether the refractive power distribution of the spectacle lens is matched to the viewing direction-dependent or situation-dependent pupil position.
- the invention relates to a device 10, 10, 210, 310 and a method for measuring individual data of a spectacle 14 arranged in a measuring position with a left and / or a right spectacle lens 16, 18.
- the device 10 1, 10, 210, 310 has a display 24 for displaying a test structure 25.
- the device 10, 1 10, 210, 310 contains an image acquisition device 26 for detecting the test structure 25 with an imaging beam path comprising the left lens 16 and / or the right lens 18 of the lens 14 interspersed.
- the device 10, 1 10, 210, 310 has a computer unit 82 with a computer program, which consists of the image of the test structure 25 acquired with the image acquisition device 26, 26 ', 26 ", 26"' and a known spatial position of the display 24 relative to the image capture device 26, 26 ', 26 ", 26”' and preferably a known spatial position of the spectacles 14 relative to the image capture device 26, 26 ', 26 ", 26”' a refractive power distribution for at least a portion of the left lens 16 and / or of the right spectacle lens 18.
- the spectacles 14 are arranged in a measuring position. According to the invention, a test structure 25 is then provided.
- the image of the test structure 25 is then detected with an imaging beam path which passes through a left and / or right spectacle lens 16, 18 of the spectacles 14 arranged in the measurement position.
- the refractive power distribution of the left spectacle lens 16 and / or the right spectacle lens 18 is then determined from the coordinates of the test structure 25 and the detected image of the test structure 25.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
- Eyeglasses (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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EP16731931.8A EP3314230B1 (de) | 2015-06-25 | 2016-06-24 | Vermessen von individuellen daten einer brille |
KR1020177037089A KR102013514B1 (ko) | 2015-06-25 | 2016-06-24 | 안경의 개별 데이터의 측정 장치 및 방법 |
CN201680037138.6A CN107810400B (zh) | 2015-06-25 | 2016-06-24 | 用于测量眼镜的个人数据的设备和方法及相关系统 |
CA2989262A CA2989262C (en) | 2015-06-25 | 2016-06-24 | Measuring individual data of spectacles |
BR112017027996-7A BR112017027996B1 (pt) | 2015-06-25 | 2016-06-24 | Medição de dados individuais de óculos |
JP2017566359A JP6368872B1 (ja) | 2015-06-25 | 2016-06-24 | 眼鏡の個別データ測定 |
IL256328A IL256328B (en) | 2015-06-25 | 2017-12-14 | Measuring an individual's glasses data |
US15/852,899 US10520390B2 (en) | 2015-06-25 | 2017-12-22 | Measuring individual data of spectacles |
US16/687,856 US11408798B2 (en) | 2015-06-25 | 2019-11-19 | Measuring individual data of spectacles |
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Application Number | Priority Date | Filing Date | Title |
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DE102015211879.7A DE102015211879B4 (de) | 2015-06-25 | 2015-06-25 | Vermessen von individuellen Daten einer Brille |
DE102015211879.7 | 2015-06-25 |
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US15/852,899 Continuation-In-Part US10520390B2 (en) | 2015-06-25 | 2017-12-22 | Measuring individual data of spectacles |
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US (2) | US10520390B2 (de) |
EP (1) | EP3314230B1 (de) |
JP (1) | JP6368872B1 (de) |
KR (1) | KR102013514B1 (de) |
CN (1) | CN107810400B (de) |
BR (1) | BR112017027996B1 (de) |
CA (1) | CA2989262C (de) |
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HK (1) | HK1252453A1 (de) |
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- 2016-06-24 KR KR1020177037089A patent/KR102013514B1/ko active IP Right Grant
- 2016-06-24 JP JP2017566359A patent/JP6368872B1/ja active Active
- 2016-06-24 CN CN201680037138.6A patent/CN107810400B/zh active Active
- 2016-06-24 BR BR112017027996-7A patent/BR112017027996B1/pt active IP Right Grant
- 2016-06-24 WO PCT/EP2016/064764 patent/WO2016207412A1/de active Application Filing
- 2016-06-24 EP EP16731931.8A patent/EP3314230B1/de active Active
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Also Published As
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EP3314230A1 (de) | 2018-05-02 |
US20200088603A1 (en) | 2020-03-19 |
US11408798B2 (en) | 2022-08-09 |
CN107810400A (zh) | 2018-03-16 |
CN107810400B (zh) | 2021-08-06 |
CA2989262C (en) | 2020-12-08 |
CA2989262A1 (en) | 2016-12-29 |
EP3314230B1 (de) | 2019-02-20 |
JP6368872B1 (ja) | 2018-08-01 |
JP2018524584A (ja) | 2018-08-30 |
KR102013514B1 (ko) | 2019-08-22 |
KR20180019123A (ko) | 2018-02-23 |
US10520390B2 (en) | 2019-12-31 |
BR112017027996A2 (pt) | 2018-08-28 |
HK1252453A1 (zh) | 2019-05-24 |
DE102015211879B4 (de) | 2018-10-18 |
IL256328A (en) | 2018-01-31 |
IL256328B (en) | 2021-05-31 |
DE102015211879A1 (de) | 2016-12-29 |
BR112017027996B1 (pt) | 2023-02-28 |
US20180120198A1 (en) | 2018-05-03 |
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