WO2018185264A1 - Measurement support device for spectacle frame - Google Patents

Measurement support device for spectacle frame Download PDF

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Publication number
WO2018185264A1
WO2018185264A1 PCT/EP2018/058821 EP2018058821W WO2018185264A1 WO 2018185264 A1 WO2018185264 A1 WO 2018185264A1 EP 2018058821 W EP2018058821 W EP 2018058821W WO 2018185264 A1 WO2018185264 A1 WO 2018185264A1
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WO
WIPO (PCT)
Prior art keywords
support device
measurement support
spectacle frame
reference member
lens
Prior art date
Application number
PCT/EP2018/058821
Other languages
French (fr)
Inventor
Michael Krasnik
Kenneth Krasnik
Original Assignee
Smart Done Solutions Aps
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smart Done Solutions Aps filed Critical Smart Done Solutions Aps
Publication of WO2018185264A1 publication Critical patent/WO2018185264A1/en

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Classifications

    • 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
    • G02C13/005—Measuring geometric parameters required to locate ophtalmic lenses in spectacles frames

Definitions

  • the present disclosure relates to a measurement support device for a spectacle frame.
  • the measurement support device is capable of simplifying and adding preciseness to the process of adjustment of progressive lenses with respect to a spectacle frame.
  • the disclosure further relates to the use of the measurement support device in such a process.
  • Spectacle adjustment usually involves measurement of positions of the pupils or pupillary distance of the wearer.
  • progressive lenses which have several different portions adapted for different vision modes (far-vision, near-vision (for e.g. reading) and optionally additional vision modes) it is important to measure pupil points correctly.
  • Basic and known methods for measuring the pupillary distance may involve the step of marking eye point positions directly on the lenses.
  • Progressive lenses typically have a lower portion in which the lenses are adapted for near-vision.
  • One basic method for defining a near-vision reading area for progressive lenses is to apply standard distances in relation to the far-vision positions of the pupils and the distances to the spectacle frame. These methods lack preciseness and do not take into account differences between individuals.
  • More recently methods and systems have been developed, which are capable of taking into account the positions of the pupils for an individual for several different vision modes in relation to the spectacle frame.
  • the existing systems typically involve photographing the eyes of the wearer wearing spectacles so that the pupil positions can be calculated in relation to the spectacle frame in use for different vision modes.
  • calibration rigs are attached to the spectacle frame to provide visual indications which can be used as reference points in the images of the eyes.
  • the rig since optimal fitting requires a high level of precision, the rig must be correctly positioned.
  • the existing systems are typically complex and difficult to mount, and even more difficult to calibrate such that they are mounted in an exact position in relation to the spectacle frame. If the rig is not correctly mounted there is a risk the measurements and fitting of the spectacles will not be correct. Summary of invention
  • the present disclosure relates to a device for supporting measurement of positions of eye points.
  • One aspect of the presently discloses device relates to improving the accurateness in relation to the aforementioned issue of placing the visual indicators in relation to the spectacle frame.
  • a measurement support device for supporting measurement of positions of eye points of a subject with respect to a spectacle frame having two lens-holding rings is disclosed, the measurement support device comprising:
  • the reference member (1 ) to the spectacle frame (2) such that the reference member (5) extends longitudinally along the spectacle frame (2), wherein the reference member (5) is longitudinally slidable along the spectacle frame in a mounted position;
  • the measurement support device (1 ) is adapted to force the reception element (8) into a centered position in relation to the two lens- holding rings (3) when the reception element (8) receives the protrusion portion (10) slidingly transversally.
  • the presently disclosed device offers precise centering of the measurement support device in relation to the spectacle frame and that it very easy to operate for the user.
  • the reference member In a centering process, the reference member is first mounted onto the spectacle frame. In the mounted position, the reference member can still slide along the spectacle frame.
  • the centering member which may be a separate funnel-shaped piece between the two lens-holding rings, is transversally inserted into the reception channel of the reference member, the shape of its lower portion
  • the lens-holding rings typically have a symmetric and inclined inner contour towards the nose of the wearer.
  • the presently disclosed measurement support device makes use of this shape such that when the protrusion portion is moved upwards (i.e. inserted into the reception element), it will automatically center itself between the lens-holding rings due to the shape of the lens-holding rings and the shape of the funnel-shaped position support element. Since the reference member is also longitudinally slidable along the spectacle frame, it will follow the centering movement and also center in relation to the two lens-holding rings as the centering member is slid upwards into the reception element of the reference member.
  • the centering member can be arranged between the two lens-holding rings in a centered position, as shown in for example fig. 1 , while at the same time being rigidly attached to the reference member in a predefined attachment position. In this position it is ensured that the measurement support device is positioned centered in relation to the two lens-holding rings.
  • a further advantage of the device is that it may be used with a wide range of spectacle frames since the centering member is preferably adapted to be slidingly transversally inserted into the reference member. Since the reference member and centering member may slide or move in relation to each other, they fit different sizes and shapes of spectacle frames.
  • the centering member comprises an attachment part, which may be for example a protrusion that can be inserted into a corresponding receiving hole or sliding channel of the reference member, and a position support element, which is adapted to abut the two lens-holding rings when the centering member is inserted into the sliding channel such that the centering member is not movable in the longitudinal direction (x- direction) of the spectacle frame. If the position support element has a narrower upper part and increasingly wider towards the lower part it will reach a position in which it abuts the two lens-holding rings in a centered position between the two lens-holding rings.
  • the present disclosure further relates to the use of the measurement support device for measurement of positions of eye points and/or pupillary distance of a subject, and to adjustment of spectacles, in particular to adjustment of progressive lenses with respect to a spectacle frame.
  • Fig. 1 shows an embodiment of the measurement support device in a mounted and centered position on a spectacle frame
  • Fig. 2 shows the measurement support device of fig. 1 from the backside.
  • Fig. 3 shows the measurement support device of figs. 1 -2 from an upper view.
  • Fig. 4 shows an embodiment of the measurement support device in a partly mounted configuration (reference member mounted on a spectacle frame but centering member not mounted)
  • Fig. 5 shows the measurement support device in an unmounted configuration.
  • Fig. 6 shows an example of use of the measurement support device.
  • the present disclosure relates to a measurement support device for supporting measurement of positions of eye points of a subject with respect to a spectacle frame having two lens-holding rings is disclosed.
  • the measurement support device may comprise:
  • a reference member comprising:
  • the reference member preferably comprises at least one visual reference, such as a ruler.
  • the measurement support device may further comprise a centering member.
  • the measurement support device is configured such that engagement of the reception element and the centering member centers the reception element in relation to the two lens-holding rings.
  • the centering member may be adapted to be slidingly transversally inserted into the reception element such that the reception element is arranged in a fixed centered position longitudinally in relation to the two lens-holding rings. Longitudinally in relation to the two lens-holding rings is to be understood as a horizontal or left-right direction when the spectacles have a normal wearing position as in for example fig. 1 . Longitudinally along the spectacle frame has the same orientation as longitudinally along the two lens-holding rings.
  • Lens-holding rings may refer to the parts of the spectacle frame holding the two lenses for the two eyes of the wearer, i.e. the normal construction of a spectacle frame.
  • the two lens-holding rings are connected by a bridge element and typically there is some space between the two lens-holding rings for the wearer's nose.
  • the lens-holding rings may come in a range of shapes. The invention is not limited to any particular shape of the lens-holding rings.
  • the above combination of elements ensures that the measurement support device is both centered and fixed, preferably rigidly connected by means of e.g. at least one clip, in relation to the two lens-holding rings. This may typically be difficult to achieve with the existing devices which may have for example indications for positioning the reference member/rig but cannot ensure a centered position.
  • the measurement support device may have at least two separate parts, which may be detachable from each other: the reference member and the centering member. Operation of the measurement support device may include two configurations. In a first configuration the device is not centered. In this configuration the parts do not have to be attached but can be two loose, separate parts. Alternatively they could be connected but not arranged for centering the device in relation to the two lens-holding rings of the spectacle frame in the first configuration.
  • the reference member and the centering member may be rigidly attached to each other, wherein the centering member is arranged between the two lens-holding rings of the spectacle frame.
  • the centering member abuts the inner sides of the two lens-holding rings of the spectacle frame.
  • Inner sides of the two lens- holding rings refer to the sides towards an imagined centered vertical axis of the spectacle frame between the two lens-holding rings.
  • the centering member may preferably abut the inner side of the two lens-holding rings in the region between the two lens-holding rings corresponding to the space for the nose of the wearer.
  • the presently disclosed measurement support device may use the space intended for the nose of the wearer for centering before the spectacle frame is placed on the wearer.
  • the reference member is attached to the spectacle frame such that it can still be pushed in a horizontal direction.
  • the centering member is inserted the reference member is adjusted to a central position between the two lens- holding rings. If the centering member is then removed, the clips for attaching the reference member to the spectacle frame are the sufficiently strong for maintaining the reference member in a fixed place when the user wears the spectacles for
  • the reception element of the reference member is adapted to receive the centering member slidingly, transversally in relation to the two lens-holding rings. If the centering member is received slidingly, transversally in relation to the two lens-holding rings, as shown in e.g. fig. 5 - the protruding protrusion portion 10 can be slidingly inserted into the reception element 8 - the measurement support device can be used with different sizes and shapes of spectacle frames.
  • the attachment element is inserted until it abuts the inner side of the two lens-holding rings, where the centering member is in a centered position in relation to the two lens-holding rings.
  • the centering member is not movable in the longitudinal direction of the spectacle frame.
  • the reference member may be adapted to be mounted on the upper side of the spectacle frame, for example by means of clips.
  • the reference member when correctly positioned, can assist an optician or an automatic tool such as a camera and a system for image processing during operation involving measurements of areas, positions and distances of parts of the eyes.
  • the reference member may comprise an elongate element adapted to be mounted on the upper side of the spectacle frame, preferably extending in the longitudinal direction along the spectacle frame. Reception element, centering member, position support element
  • the reference member may comprise a reception element for receiving a centering member.
  • the reception part is preferably arranged such that the centering member can be slidingly inserted.
  • the reception element therefore comprises a sliding channel, preferably a hollow sliding channel, extending in a transversal direction of the reference member, i.e. a vertical or y direction with reference to fig. 1 .
  • the centering may thereby comprise a corresponding protrusion such as a pin which fits the channel of the reception element.
  • the two parts can only slide in one direction in relation to each other in order to avoid inaccurate placement.
  • the protrusion and sliding element may be shaped such that during insertion the pin and sliding element only move in the sliding direction in relation to each other.
  • the protrusion and sliding element may be shaped such that sideways movement of the protrusion and sliding element in relation to each other is prevented.
  • the connection between the two parts is not limited to the reception element having a receiving channel and the centering element having a pin. Vice versa or any suitable means for slidable attachment are also possible.
  • the sliding channel (and thus the corresponding protrusion) is substantially flat.
  • the protrusion portion of the centering member may be adapted to be attached to the reference member in a fixed centered position longitudinally in relation to the two lens-holding rings. In the configuration of fig. 1 the protrusion portion in the form of a protrusion element is inserted in the sliding channel of the reception element.
  • One aspect of the invention relation to the measurement being accurately centered in relation to the two lens-holding rings of the spectacle frame and preferably that the design can be used with a range of shapes of spectacle frames.
  • Spectacle frames typically have a space between the lens-holding rings for the nose of the wearer. This space typically is narrower in the upper end and wider in the lower end.
  • the inventors have realized that the space can be used for centering a measurement assisting device.
  • the centering member is therefore adapted inserted from a lower side of the spectacle frame through a space between the two lens-holding rings of the spectacle frame. Lower is to be construed as when the spectacle frame is positioned as in fig. 1 .
  • the centering member of the measurement support device may comprise a position support portion adapted to abut the two lens-holding rings when the centering member is in an inserted position such that the centering member is not movable in the longitudinal direction of the spectacle frame.
  • the measurement support device of fig. 1 comprises a position support portion, which is the lower portion of the centering member.
  • the protrusion portion may thereby constitute an upper portion of the centering member and the position support element a lower portion of the centering member. In the position in fig. 1 the position support portion has been inserted into the reception element into a position where it abuts two abutment points on the inner side of the two lens-holding rings.
  • the position support element may have a symmetric shape along an imagined y axis.
  • the symmetry in this regard only concerns symmetry in the x-y plane.
  • the position support element 1 1 of the centering member has a symmetric shape, in this case a substantially triangular and funnel-shaped.
  • the position support element is therefore funnel-shaped.
  • the position support element is is symmetric and/or substantially triangular.
  • the purpose of the reference member is to provide visual indications to for example a system using a camera to take pictures of the spectacle frame worn by a user.
  • the reference member may thereby provide references in relation to the spectacle frame so that for example areas of progressive lenses can be calculated or extracted in relation to eye points of the wearer and the spectacle frame.
  • the reference member therefore needs to be precisely positioned in relation to the spectacle frame.
  • the reference member may comprise an elongate horizontal element which may be mounted on the spectacle frame.
  • the at least one visual reference is arranged for indicating a position of the reference member in relation to the eye points of the subject. In this configuration the measurement support device is attached to the spectacle frame, which is worn by a user in a fixed position corresponding to an actual use position of the spectacles.
  • the reference member may comprise a first ruler for indicating distances in the horizontal/longitudinal direction of the spectacle frame.
  • a first ruler for indicating distances in the horizontal/longitudinal direction of the spectacle frame An example of such a ruler (6) can be seen in fig. 1 .
  • the reference member may further comprise at least one second ruler for indicating distances in the vertical direction of the spectacle frame.
  • An example of such a ruler (13) can be seen in fig. 1 .
  • the vertical ruler can be used to provide visual references and/or measurements in the y direction of an imagined x-y coordinate system.
  • the at least one second ruler is preferably placed on at least one further vertical element (12) of the reference member.
  • the reference member further comprises at least one vertical element having a second ruler for indicating distances in the vertical direction of the spectacle frame.
  • the measurement support device can be attached and released to the spectacle frame.
  • any suitable means for attachment may be used.
  • mounting elements such as clips for maintaining the reference member in a fixed position in relation to the spectacle frame may be used.
  • Such clip may be arranged for clipping the reference member around the upper side of the spectacle frame.
  • the measurement support device is made of a light and rigid material.
  • the measurement support device may be made of a light material, selected from the group of plastics, such as polycarbonate (PC) or polymethylmethacrylate (PMMA), or aluminum.
  • Intended areas of use of the presently disclosed measurement support device includes fitting of progressive lenses.
  • Progressive lenses need to be properly adjusted.
  • a common problem with progressive lenses is that they are not properly fitted and do not match up with the wearer's pupils in one or several positions.
  • One aspect of the present disclosure relates to the use of the measurement support device for measuring positions of eye points and/or pupillary distance of a subject.
  • a natural use posture possibly several different posture such a default posture and a reading posture
  • specific eye points can be measured and specific areas for the lenses can be calculated/extracted accordingly. Since the measurement support device is precisely centered, the areas are extracted accurately.
  • fig. 6 wherein the pupils of the wearer are indicated in relation to horizontal and vertical rulers. These indications may be referred to as the sweet spots, which is the physiologically most suitable reading point for the wearer of the glasses.
  • the reference member in this view has been centered using a centering member (removed, thus not shown in fig. 6).
  • a corridor for reading is extracted.
  • the use of the measurement support device involves measuring of positions of eye points and/or pupillary distance of a subject.
  • the wearer may be asked to take a normal posture of the body and/or head and read from for example a tablet device, which is held in a normal reading position.
  • the same tablet device may be used simultaneously for obtaining a picture of the eyes, spectacles and measurement support device to obtain images that may be used for fitting of the spectacles for the specific user.
  • the measurement support device may be used for adjustment of spectacles, and/or in particular for adjustment of progressive lenses with respect to a spectacle frame.
  • the measurement support device may thereby be part of a measuring and/or adjustment system comprising a camera, such as a camera connected or integrated in a computer, tablet or mobile phone, and means for performing image processing and extraction of areas, positions and distances of parts of the eyes.
  • a camera such as a camera connected or integrated in a computer, tablet or mobile phone
  • Fig. 1 shows an embodiment of the measurement support device (1 ) in a mounted and centered position on a spectacle frame (2) having two lens-holding rings (3).
  • the measurement support device (1 ) has a reference member (5) which is mounted along the upper edge of the spectacle frame (2).
  • the measurement support device (1 ) further comprises a centering member (9) which comprises an attachment element in the form of a protrusion (10) and a funnel-shaped position support element (1 1 ).
  • fig. 1 represents an inserted, centered position wherein the position support element (1 1 ) abuts the inner sides of the two lens-holding rings in two abutment points (4).
  • the reference member has one horizontally arranged ruler (6) for each eye and one vertically arranged ruler (13) for each eye.
  • the vertically arranged rulers (13) are placed on vertical arms (12) extending transversally from the horizontal body (5) of the reference member.
  • the reference member (5) further comprises a reception element (8) in the form of a sliding channel (8) in which the protrusion (10) of the centering member (9) is inserted.
  • the reference member (5) comprises a grip (14) in the form of a cut-out which the user could hold when mounting the device.
  • the grip could be any visual or otherwise physical indication for guiding the user to a suitable holding position.
  • the centering member (9) has a similar indication (15).
  • Fig. 2 shows the measurement support device (1 ) of fig. 1 from the backside. From this view it can be seen how the measurement support device (1 ), in particular the reference member (5) is attached to the spectacular frame (2) by means of a pair of clips (7).
  • Fig. 3 shows the measurement support device (1 ) of figs. 1 -2 from an upper view.
  • a view of the protrusion (10) of the centering element (9) inserted into a sliding channel (8) of the reference member (5) is disclosed.
  • Fig. 4 shows an embodiment of the measurement support device (1 ) in a partly mounted configuration.
  • the reference member (5) is mounted on the spectacle frame (2) but the centering member (9) is not mounted on the reference member (5).
  • Fig. 5 shows the measurement support device (1 ) in an unmounted configuration without spectacles.
  • Fig. 6 shows an example of use of the measurement support device (1 ) being used for fitting of progressive glasses.
  • the pupils of the wearer are indicated as pupil indications (16) in relation to horizontal (6) and vertical (13) rulers.
  • the reference member (5) in this view has been centered using a centering member (9) (removed, thus not shown in fig. 6).
  • a corridor (17) for reading can be extracted.
  • a reference member comprising:
  • the measurement support device is configured such that engagement of the reception element and the centering member centers the reception element in relation to the two lens-holding rings.
  • the reference member (1 ) to the spectacle frame (2) such that the reference member (5) extends longitudinally along the spectacle frame (2), wherein the reference member (5) is longitudinally slidable along the spectacle frame in a mounted position;
  • the measurement support device (1 ) is adapted to force the reception element (8) into a centered position in relation to the two lens- holding rings (3) when the reception element (8) receives the protrusion portion (10) slidingly transversally.
  • the reception element comprises a sliding channel, preferably a hollow sliding channel, extending in a transversal direction of the reference member, for receiving the protrusion portion (10).
  • the centering member comprises a position support portion adapted to center itself and the reception element between the two lens-holding rings when the protrusion portion is inserted slidingly transversally into the reception element.
  • the position support element is funnel-shaped.
  • the measurement support device wherein the symmetric and funnel-shaped position support element of the centering member is longitudinally centered between the two lens-holding rings when the protrusion portion is inserted slidingly transversally into the reception element.
  • the reference member further comprising at least one visual reference, such as a ruler.
  • the centering member is adapted to be slidingly transversally inserted into the reception element in relation to the longitudinally extending spectacle frame such that the reception element is arranged in a fixed centered position longitudinally in relation to the two lens-holding rings.
  • the measurement support device is configured such that engagement of the reception element and the centering member centers the spectacle frame in the reference member.
  • the reception element is adapted to receive the centering member slidingly, transversally in relation to the two lens-holding rings.
  • the centering member abuts the two lens-holding rings in an inserted position such that the centering member is not movable in the longitudinal direction of the spectacle frame.
  • the reception element comprises a sliding channel, preferably a hollow sliding channel, extending in a transversal direction of the reference member.
  • the measurement support device wherein the sliding channel is substantially flat.
  • the centering member comprises an attachment element adapted to be attached to the reference member in a fixed centered position longitudinally in relation to the two lens-holding rings.
  • the centering member comprises a protrusion element adapted to be inserted into the sliding channel of the reception element.
  • the protrusion and sliding element are shaped such that during insertion the pin and sliding element only move in the sliding direction in relation to each other.
  • the measurement support device according to any of claims 15-16, wherein the protrusion and sliding element are shaped such that sideways movement of the protrusion and sliding element in relation to each other is prevented.
  • the measurement support device according to any of claims 15-17, wherein the protrusion and sliding element are substantially flat.
  • the centering member is adapted inserted from a lower side of the spectacle frame through a space between the two lens-holding rings of the spectacle frame.
  • the centering member comprises a position support portion adapted to abut the two lens-holding rings when the centering member is in an inserted position such that the centering member is not movable in the longitudinal direction of the spectacle frame.
  • the reference member is adapted to be mounted on the upper side of the spectacle frame.
  • the reference member comprises a first ruler for indicating distances in the horizontal/longitudinal direction of the spectacle frame.
  • the reference member further comprising at least one vertical element having a second ruler for indicating distances in the vertical direction of the spectacle frame.
  • At least one mounting element is at least one clip for maintaining the reference member in a fixed position in relation to the spectacle frame.
  • the measurement support device according to claim 31 wherein the clip is arranged for clipped around the upper side of the spectacle frame.
  • said measurement support device being made of a light material, selected from the group of plastics, such as polycarbonate (PC) or polymethylmethacrylate (PMMA), or aluminium.

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  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

The present disclosure relates to a measurement support device (1) for supporting measurement of positions of eye points of a subject with respect to a spectacle frame (2) having two lens-holding rings (3), the measurement support device (1) comprising: a centering member (9) comprising a protrusion portion (10); a reference member (5) comprising: at least one mounting element (7) for mounting the reference member (1) to the spectacle frame (2) such that the reference member (5) extends longitudinally along the spectacle frame (2), wherein the reference member (5) is longitudinally slidable along the spectacle frame in a mounted position; a reception element (8) for receiving the protrusion portion (10) slidingly transversally; wherein the measurement support device (1) is adapted to force the reception element (8) into a centered position in relation to the two lens-holding rings (3) when the reception element (8) receives the protrusion portion (10) slidingly transversally.

Description

Measurement support device for spectacle frame
The present disclosure relates to a measurement support device for a spectacle frame. The measurement support device is capable of simplifying and adding preciseness to the process of adjustment of progressive lenses with respect to a spectacle frame. The disclosure further relates to the use of the measurement support device in such a process.
Background of invention
Spectacle adjustment usually involves measurement of positions of the pupils or pupillary distance of the wearer. In particular for progressive lenses, which have several different portions adapted for different vision modes (far-vision, near-vision (for e.g. reading) and optionally additional vision modes) it is important to measure pupil points correctly. Basic and known methods for measuring the pupillary distance may involve the step of marking eye point positions directly on the lenses. Progressive lenses typically have a lower portion in which the lenses are adapted for near-vision. One basic method for defining a near-vision reading area for progressive lenses is to apply standard distances in relation to the far-vision positions of the pupils and the distances to the spectacle frame. These methods lack preciseness and do not take into account differences between individuals.
More recently methods and systems have been developed, which are capable of taking into account the positions of the pupils for an individual for several different vision modes in relation to the spectacle frame. The existing systems typically involve photographing the eyes of the wearer wearing spectacles so that the pupil positions can be calculated in relation to the spectacle frame in use for different vision modes. In some systems calibration rigs are attached to the spectacle frame to provide visual indications which can be used as reference points in the images of the eyes. However, since optimal fitting requires a high level of precision, the rig must be correctly positioned. The existing systems are typically complex and difficult to mount, and even more difficult to calibrate such that they are mounted in an exact position in relation to the spectacle frame. If the rig is not correctly mounted there is a risk the measurements and fitting of the spectacles will not be correct. Summary of invention
The present disclosure relates to a device for supporting measurement of positions of eye points. One aspect of the presently discloses device relates to improving the accurateness in relation to the aforementioned issue of placing the visual indicators in relation to the spectacle frame. In a first embodiment a measurement support device for supporting measurement of positions of eye points of a subject with respect to a spectacle frame having two lens-holding rings is disclosed, the measurement support device comprising:
- a centering member (9) comprising a protrusion portion (10);
- a reference member (5) comprising:
• at least one mounting element (7) for mounting the reference
member (1 ) to the spectacle frame (2) such that the reference member (5) extends longitudinally along the spectacle frame (2), wherein the reference member (5) is longitudinally slidable along the spectacle frame in a mounted position;
• a reception element (8) for receiving the protrusion portion (10) slidingly transversally;
wherein the measurement support device (1 ) is adapted to force the reception element (8) into a centered position in relation to the two lens- holding rings (3) when the reception element (8) receives the protrusion portion (10) slidingly transversally.
Advantages of the presently disclosed device include that it offers precise centering of the measurement support device in relation to the spectacle frame and that it very easy to operate for the user. In a centering process, the reference member is first mounted onto the spectacle frame. In the mounted position, the reference member can still slide along the spectacle frame. When the centering member, which may be a separate funnel-shaped piece between the two lens-holding rings, is transversally inserted into the reception channel of the reference member, the shape of its lower portion
(triangular/funnel-shaped etc.) will center the centering member between the lens- holding rings. The lens-holding rings typically have a symmetric and inclined inner contour towards the nose of the wearer. The presently disclosed measurement support device makes use of this shape such that when the protrusion portion is moved upwards (i.e. inserted into the reception element), it will automatically center itself between the lens-holding rings due to the shape of the lens-holding rings and the shape of the funnel-shaped position support element. Since the reference member is also longitudinally slidable along the spectacle frame, it will follow the centering movement and also center in relation to the two lens-holding rings as the centering member is slid upwards into the reception element of the reference member.
One advantage of such a device is that the centering member can be arranged between the two lens-holding rings in a centered position, as shown in for example fig. 1 , while at the same time being rigidly attached to the reference member in a predefined attachment position. In this position it is ensured that the measurement support device is positioned centered in relation to the two lens-holding rings.
A further advantage of the device is that it may be used with a wide range of spectacle frames since the centering member is preferably adapted to be slidingly transversally inserted into the reference member. Since the reference member and centering member may slide or move in relation to each other, they fit different sizes and shapes of spectacle frames.
Preferably the centering member comprises an attachment part, which may be for example a protrusion that can be inserted into a corresponding receiving hole or sliding channel of the reference member, and a position support element, which is adapted to abut the two lens-holding rings when the centering member is inserted into the sliding channel such that the centering member is not movable in the longitudinal direction (x- direction) of the spectacle frame. If the position support element has a narrower upper part and increasingly wider towards the lower part it will reach a position in which it abuts the two lens-holding rings in a centered position between the two lens-holding rings.
The present disclosure further relates to the use of the measurement support device for measurement of positions of eye points and/or pupillary distance of a subject, and to adjustment of spectacles, in particular to adjustment of progressive lenses with respect to a spectacle frame.
These and other aspects of the invention are set forth in the following detailed description if the invention. Description of drawings
Fig. 1 shows an embodiment of the measurement support device in a mounted and centered position on a spectacle frame
Fig. 2 shows the measurement support device of fig. 1 from the backside.
Fig. 3 shows the measurement support device of figs. 1 -2 from an upper view.
Fig. 4 shows an embodiment of the measurement support device in a partly mounted configuration (reference member mounted on a spectacle frame but centering member not mounted)
Fig. 5 shows the measurement support device in an unmounted configuration.
Fig. 6 shows an example of use of the measurement support device.
Detailed description of the invention
The present disclosure relates to a measurement support device for supporting measurement of positions of eye points of a subject with respect to a spectacle frame having two lens-holding rings is disclosed. The measurement support device may comprise:
a reference member comprising:
• at least one mounting element for attaching the reference member to the spectacle frame such that the reference member extends longitudinally along the spectacle frame;
· a reception element for receiving a centering member.
The reference member preferably comprises at least one visual reference, such as a ruler. The measurement support device may further comprise a centering member. Preferably the measurement support device is configured such that engagement of the reception element and the centering member centers the reception element in relation to the two lens-holding rings. The centering member may be adapted to be slidingly transversally inserted into the reception element such that the reception element is arranged in a fixed centered position longitudinally in relation to the two lens-holding rings. Longitudinally in relation to the two lens-holding rings is to be understood as a horizontal or left-right direction when the spectacles have a normal wearing position as in for example fig. 1 . Longitudinally along the spectacle frame has the same orientation as longitudinally along the two lens-holding rings. Alternatively this could be expressed as an x direction or a direction along an imagined horizontal axis of e.g. fig. 1 . The centering member being adapted to be slidingly transversally inserted into the reception element in relation to the longitudinally extending spectacle frame thus corresponds to a vertical direction in the x-y plane or a y direction in fig. 1 . Lens-holding rings may refer to the parts of the spectacle frame holding the two lenses for the two eyes of the wearer, i.e. the normal construction of a spectacle frame.
Typically the two lens-holding rings are connected by a bridge element and typically there is some space between the two lens-holding rings for the wearer's nose. The lens-holding rings may come in a range of shapes. The invention is not limited to any particular shape of the lens-holding rings.
The above combination of elements ensures that the measurement support device is both centered and fixed, preferably rigidly connected by means of e.g. at least one clip, in relation to the two lens-holding rings. This may typically be difficult to achieve with the existing devices which may have for example indications for positioning the reference member/rig but cannot ensure a centered position. The measurement support device may have at least two separate parts, which may be detachable from each other: the reference member and the centering member. Operation of the measurement support device may include two configurations. In a first configuration the device is not centered. In this configuration the parts do not have to be attached but can be two loose, separate parts. Alternatively they could be connected but not arranged for centering the device in relation to the two lens-holding rings of the spectacle frame in the first configuration. In a second configuration the reference member and the centering member may be rigidly attached to each other, wherein the centering member is arranged between the two lens-holding rings of the spectacle frame. Preferably, in the second configuration the centering member abuts the inner sides of the two lens-holding rings of the spectacle frame. Inner sides of the two lens- holding rings refer to the sides towards an imagined centered vertical axis of the spectacle frame between the two lens-holding rings. By abutting the inner side of the two lens-holding rings in the second configuration the centering member is locked in the longitudinal direction of the spectacle frame, as shown in for example fig.1 . The centering member may preferably abut the inner side of the two lens-holding rings in the region between the two lens-holding rings corresponding to the space for the nose of the wearer. The presently disclosed measurement support device may use the space intended for the nose of the wearer for centering before the spectacle frame is placed on the wearer. In such a process the reference member is attached to the spectacle frame such that it can still be pushed in a horizontal direction. When the centering member is inserted the reference member is adjusted to a central position between the two lens- holding rings. If the centering member is then removed, the clips for attaching the reference member to the spectacle frame are the sufficiently strong for maintaining the reference member in a fixed place when the user wears the spectacles for
measurement.
Preferably, the reception element of the reference member is adapted to receive the centering member slidingly, transversally in relation to the two lens-holding rings. If the centering member is received slidingly, transversally in relation to the two lens-holding rings, as shown in e.g. fig. 5 - the protruding protrusion portion 10 can be slidingly inserted into the reception element 8 - the measurement support device can be used with different sizes and shapes of spectacle frames. The attachment element is inserted until it abuts the inner side of the two lens-holding rings, where the centering member is in a centered position in relation to the two lens-holding rings. Thus, preferably when the centering member abuts the two lens-holding rings in an inserted position the centering member is not movable in the longitudinal direction of the spectacle frame.
The reference member may be adapted to be mounted on the upper side of the spectacle frame, for example by means of clips. The reference member, when correctly positioned, can assist an optician or an automatic tool such as a camera and a system for image processing during operation involving measurements of areas, positions and distances of parts of the eyes. The reference member may comprise an elongate element adapted to be mounted on the upper side of the spectacle frame, preferably extending in the longitudinal direction along the spectacle frame. Reception element, centering member, position support element
The reference member may comprise a reception element for receiving a centering member. The reception part is preferably arranged such that the centering member can be slidingly inserted. In one embodiment the reception element therefore comprises a sliding channel, preferably a hollow sliding channel, extending in a transversal direction of the reference member, i.e. a vertical or y direction with reference to fig. 1 . The centering may thereby comprise a corresponding protrusion such as a pin which fits the channel of the reception element. Preferably the two parts can only slide in one direction in relation to each other in order to avoid inaccurate placement. For example the protrusion and sliding element may be shaped such that during insertion the pin and sliding element only move in the sliding direction in relation to each other. In such an embodiment the protrusion and sliding element may be shaped such that sideways movement of the protrusion and sliding element in relation to each other is prevented. The connection between the two parts is not limited to the reception element having a receiving channel and the centering element having a pin. Vice versa or any suitable means for slidable attachment are also possible. In one embodiment, the sliding channel (and thus the corresponding protrusion) is substantially flat. The protrusion portion of the centering member may be adapted to be attached to the reference member in a fixed centered position longitudinally in relation to the two lens-holding rings. In the configuration of fig. 1 the protrusion portion in the form of a protrusion element is inserted in the sliding channel of the reception element.
One aspect of the invention relation to the measurement being accurately centered in relation to the two lens-holding rings of the spectacle frame and preferably that the design can be used with a range of shapes of spectacle frames. Spectacle frames typically have a space between the lens-holding rings for the nose of the wearer. This space typically is narrower in the upper end and wider in the lower end. The inventors have realized that the space can be used for centering a measurement assisting device. In one embodiment of the measurement support device the centering member is therefore adapted inserted from a lower side of the spectacle frame through a space between the two lens-holding rings of the spectacle frame. Lower is to be construed as when the spectacle frame is positioned as in fig. 1 .
The centering member of the measurement support device may comprise a position support portion adapted to abut the two lens-holding rings when the centering member is in an inserted position such that the centering member is not movable in the longitudinal direction of the spectacle frame. The measurement support device of fig. 1 comprises a position support portion, which is the lower portion of the centering member. The protrusion portion may thereby constitute an upper portion of the centering member and the position support element a lower portion of the centering member. In the position in fig. 1 the position support portion has been inserted into the reception element into a position where it abuts two abutment points on the inner side of the two lens-holding rings. In order to ensure that the position is centered in the longitudinal direction of the spectacle frame the position support element may have a symmetric shape along an imagined y axis. The symmetry in this regard only concerns symmetry in the x-y plane. In the example of fig. 1 the position support element 1 1 of the centering member has a symmetric shape, in this case a substantially triangular and funnel-shaped. In one embodiment of the presently disclosed measurement device the position support element is therefore funnel-shaped. In a further embodiment the position support element is is symmetric and/or substantially triangular.
Further details (rulers, clips etc.)
The purpose of the reference member is to provide visual indications to for example a system using a camera to take pictures of the spectacle frame worn by a user. The reference member may thereby provide references in relation to the spectacle frame so that for example areas of progressive lenses can be calculated or extracted in relation to eye points of the wearer and the spectacle frame. The reference member therefore needs to be precisely positioned in relation to the spectacle frame. The reference member may comprise an elongate horizontal element which may be mounted on the spectacle frame. In one embodiment of the measurement support device the at least one visual reference is arranged for indicating a position of the reference member in relation to the eye points of the subject. In this configuration the measurement support device is attached to the spectacle frame, which is worn by a user in a fixed position corresponding to an actual use position of the spectacles.
The reference member may comprise a first ruler for indicating distances in the horizontal/longitudinal direction of the spectacle frame. An example of such a ruler (6) can be seen in fig. 1 . Preferably there is one ruler for the left eye and one ruler for the right eye.
The reference member may further comprise at least one second ruler for indicating distances in the vertical direction of the spectacle frame. An example of such a ruler (13) can be seen in fig. 1 . The vertical ruler can be used to provide visual references and/or measurements in the y direction of an imagined x-y coordinate system. The at least one second ruler is preferably placed on at least one further vertical element (12) of the reference member. Hence, in one embodiment the reference member further comprises at least one vertical element having a second ruler for indicating distances in the vertical direction of the spectacle frame. Preferably the measurement support device can be attached and released to the spectacle frame. For this purpose any suitable means for attachment may be used. In particular mounting elements such as clips for maintaining the reference member in a fixed position in relation to the spectacle frame may be used. Such clip may be arranged for clipping the reference member around the upper side of the spectacle frame.
Preferably the measurement support device is made of a light and rigid material. For example the measurement support device may be made of a light material, selected from the group of plastics, such as polycarbonate (PC) or polymethylmethacrylate (PMMA), or aluminum.
Use
Intended areas of use of the presently disclosed measurement support device includes fitting of progressive lenses. Progressive lenses need to be properly adjusted. A common problem with progressive lenses is that they are not properly fitted and do not match up with the wearer's pupils in one or several positions.
One aspect of the present disclosure relates to the use of the measurement support device for measuring positions of eye points and/or pupillary distance of a subject. By requesting the wearer to take a natural use posture, possibly several different posture such a default posture and a reading posture, specific eye points can be measured and specific areas for the lenses can be calculated/extracted accordingly. Since the measurement support device is precisely centered, the areas are extracted accurately. One example of such use can be seen in fig. 6, wherein the pupils of the wearer are indicated in relation to horizontal and vertical rulers. These indications may be referred to as the sweet spots, which is the physiologically most suitable reading point for the wearer of the glasses. The reference member in this view has been centered using a centering member (removed, thus not shown in fig. 6). In this example a corridor for reading is extracted. In one embodiment the use of the measurement support device involves measuring of positions of eye points and/or pupillary distance of a subject. The wearer may be asked to take a normal posture of the body and/or head and read from for example a tablet device, which is held in a normal reading position. The same tablet device may be used simultaneously for obtaining a picture of the eyes, spectacles and measurement support device to obtain images that may be used for fitting of the spectacles for the specific user.
The measurement support device may be used for adjustment of spectacles, and/or in particular for adjustment of progressive lenses with respect to a spectacle frame. The measurement support device may thereby be part of a measuring and/or adjustment system comprising a camera, such as a camera connected or integrated in a computer, tablet or mobile phone, and means for performing image processing and extraction of areas, positions and distances of parts of the eyes. Detailed description of drawings
The invention will in the following be described in greater detail with reference to the accompanying drawings. The drawings are exemplary and are intended to illustrate some of the features of the presently disclosed measurement support device, and are not to be construed as limiting to the presently disclosed invention.
Fig. 1 shows an embodiment of the measurement support device (1 ) in a mounted and centered position on a spectacle frame (2) having two lens-holding rings (3). The measurement support device (1 ) has a reference member (5) which is mounted along the upper edge of the spectacle frame (2). The measurement support device (1 ) further comprises a centering member (9) which comprises an attachment element in the form of a protrusion (10) and a funnel-shaped position support element (1 1 ). The
configuration of fig. 1 represents an inserted, centered position wherein the position support element (1 1 ) abuts the inner sides of the two lens-holding rings in two abutment points (4). In the embodiment of fig. 1 the reference member has one horizontally arranged ruler (6) for each eye and one vertically arranged ruler (13) for each eye. The vertically arranged rulers (13) are placed on vertical arms (12) extending transversally from the horizontal body (5) of the reference member. The reference member (5) further comprises a reception element (8) in the form of a sliding channel (8) in which the protrusion (10) of the centering member (9) is inserted. The reference member (5) comprises a grip (14) in the form of a cut-out which the user could hold when mounting the device. The grip could be any visual or otherwise physical indication for guiding the user to a suitable holding position. The centering member (9) has a similar indication (15). Fig. 2 shows the measurement support device (1 ) of fig. 1 from the backside. From this view it can be seen how the measurement support device (1 ), in particular the reference member (5) is attached to the spectacular frame (2) by means of a pair of clips (7).
Fig. 3 shows the measurement support device (1 ) of figs. 1 -2 from an upper view. In particular a view of the protrusion (10) of the centering element (9) inserted into a sliding channel (8) of the reference member (5) is disclosed. Fig. 4 shows an embodiment of the measurement support device (1 ) in a partly mounted configuration. The reference member (5) is mounted on the spectacle frame (2) but the centering member (9) is not mounted on the reference member (5).
Preferably it is still possible to move the reference member (5) in the horizontal direction in this configuration in order to adjust it by inserting the centering member (9).
Fig. 5 shows the measurement support device (1 ) in an unmounted configuration without spectacles.
Fig. 6 shows an example of use of the measurement support device (1 ) being used for fitting of progressive glasses. The pupils of the wearer are indicated as pupil indications (16) in relation to horizontal (6) and vertical (13) rulers. The reference member (5) in this view has been centered using a centering member (9) (removed, thus not shown in fig. 6). In this example a corridor (17) for reading can be extracted.
Further details of the invention
1 . A measurement support device for supporting measurement of positions of eye points of a subject with respect to a spectacle frame having two lens-holding rings, the measurement support device comprising:
- a centering member;
a reference member comprising:
• at least one mounting element for attaching the reference member to the spectacle frame such that the reference member extends longitudinally along the spectacle frame; • a reception element for receiving the centering member in engagement;
wherein the measurement support device is configured such that engagement of the reception element and the centering member centers the reception element in relation to the two lens-holding rings.
A measurement support device (1 ) for supporting measurement of positions of eye points of a subject with respect to a spectacle frame (2) having two lens- holding rings (3), the measurement support device (1 ) comprising:
- a centering member (9) comprising a protrusion portion (10);
- a reference member (5) comprising:
• at least one mounting element (7) for mounting the reference
member (1 ) to the spectacle frame (2) such that the reference member (5) extends longitudinally along the spectacle frame (2), wherein the reference member (5) is longitudinally slidable along the spectacle frame in a mounted position;
• a reception element (8) for receiving the protrusion portion (10) slidingly transversally;
wherein the measurement support device (1 ) is adapted to force the reception element (8) into a centered position in relation to the two lens- holding rings (3) when the reception element (8) receives the protrusion portion (10) slidingly transversally.
The measurement support device according to any of the preceding items, wherein the reception element comprises a sliding channel, preferably a hollow sliding channel, extending in a transversal direction of the reference member, for receiving the protrusion portion (10).
The measurement support device according to any of the preceding items, wherein the centering member comprises a position support portion adapted to center itself and the reception element between the two lens-holding rings when the protrusion portion is inserted slidingly transversally into the reception element. The measurement support device according to item 3, wherein the position support element is funnel-shaped.
The measurement support device according to item 4, wherein the position support element is symmetric.
The measurement support device according to item 5, wherein the symmetric and funnel-shaped position support element of the centering member is longitudinally centered between the two lens-holding rings when the protrusion portion is inserted slidingly transversally into the reception element.
The measurement support device according to any of the preceding claims, the reference member further comprising at least one visual reference, such as a ruler.
The measurement support device according to any of the preceding claims, wherein the centering member is adapted to be slidingly transversally inserted into the reception element in relation to the longitudinally extending spectacle frame such that the reception element is arranged in a fixed centered position longitudinally in relation to the two lens-holding rings.
The measurement support device according to any of the preceding claims, wherein the measurement support device is configured such that engagement of the reception element and the centering member centers the spectacle frame in the reference member. The measurement support device according to any of the preceding claims, wherein the reception element is adapted to receive the centering member slidingly, transversally in relation to the two lens-holding rings. The measurement support device according to any of the preceding claims, wherein the centering member abuts the two lens-holding rings in an inserted position such that the centering member is not movable in the longitudinal direction of the spectacle frame. The measurement support device according to any of the preceding claims, wherein the reception element comprises a sliding channel, preferably a hollow sliding channel, extending in a transversal direction of the reference member. The measurement support device according to claim 12, wherein the sliding channel is substantially flat. The measurement support device according to any of the preceding claims, wherein the centering member comprises an attachment element adapted to be attached to the reference member in a fixed centered position longitudinally in relation to the two lens-holding rings. The measurement support device according to any of claims 12-13, wherein the centering member comprises a protrusion element adapted to be inserted into the sliding channel of the reception element. The measurement support device according to claim 15, wherein the protrusion and sliding element are shaped such that during insertion the pin and sliding element only move in the sliding direction in relation to each other. The measurement support device according to any of claims 15-16, wherein the protrusion and sliding element are shaped such that sideways movement of the protrusion and sliding element in relation to each other is prevented. The measurement support device according to any of claims 15-17, wherein the protrusion and sliding element are substantially flat. The measurement support device according to any of the preceding claims, wherein the centering member is adapted inserted from a lower side of the spectacle frame through a space between the two lens-holding rings of the spectacle frame. The measurement support device according to any of the preceding claims, wherein the centering member comprises a position support portion adapted to abut the two lens-holding rings when the centering member is in an inserted position such that the centering member is not movable in the longitudinal direction of the spectacle frame.
21 . The measurement support device according to any of claims 14-18 and claim 20, wherein the attachment element is an upper portion and the position support element is a lower portion of the centering member.
22. The measurement support device according to any of claims 20-21 , wherein the position support element is funnel-shaped.
23. The measurement support device according to any of claims 20-22, wherein the position support element is symmetric.
24. The measurement support device according to any of claims 20-23, wherein the position support element is substantially triangular.
25. The measurement support device according to any of the preceding claims, wherein the reference member and the centering member are two separate parts in a first configuration, and rigidly attached to each other in a second configuration wherein the centering member is arranged between the two lens- holding rings of the spectacle frame.
26. The measurement support device according to any of the preceding claims, wherein the reference member comprises an elongate horizontal element.
27. The measurement support device according to any of the preceding claims, wherein the reference member is adapted to be mounted on the upper side of the spectacle frame. 28. The measurement support device according to any of the preceding claims, wherein the reference member comprises a first ruler for indicating distances in the horizontal/longitudinal direction of the spectacle frame.
29. The measurement support device according to any of the preceding claims, the reference member further comprising at least one vertical element having a second ruler for indicating distances in the vertical direction of the spectacle frame.
30. The measurement support device according to any of the preceding claims, wherein the at least one visual reference is arranged for indicating a position of the reference member in relation to the eye points of the subject.
31 . The measurement support device according to any of the preceding claims, wherein at least one mounting element is at least one clip for maintaining the reference member in a fixed position in relation to the spectacle frame.
32. The measurement support device according to claim 31 , wherein the clip is arranged for clipped around the upper side of the spectacle frame. 33. The measurement support device according to any of the preceding claims, said measurement support device being made of a light material, selected from the group of plastics, such as polycarbonate (PC) or polymethylmethacrylate (PMMA), or aluminium.
34. Use of the measurement support device according to any of the preceding claims for measuring of positions of eye points and/or pupillary distance of subject.
35. The use according to claim 34 for adjustment of spectacles.
36. The use according to any of claims 34-35 for adjustment of progressive lenses with respect to a spectacle frame.

Claims

Claims
1 . A measurement support device (1 ) for supporting measurement of positions of eye points of a subject with respect to a spectacle frame (2) having two lens- holding rings (3), the measurement support device (1 ) comprising:
- a centering member (9) comprising a protrusion portion (10);
- a reference member (5) comprising:
• at least one mounting element (7) for mounting the reference
member (1 ) to the spectacle frame (2) such that the reference member (5) extends longitudinally along the spectacle frame (2), wherein the reference member (5) is longitudinally slidable along th spectacle frame in a mounted position;
• a reception element (8) for receiving the protrusion portion (10) slidingly transversally;
wherein the measurement support device (1 ) is adapted to force the reception element (8) into a centered position in relation to the two lens- holding rings (3) when the reception element (8) receives the protrusion portion (10) slidingly transversally.
The measurement support device according to any of the preceding claims, wherein the reception element comprises a sliding channel, preferably a hollow sliding channel, extending in a transversal direction of the reference member, for receiving the protrusion portion (10).
The measurement support device according to any of the preceding claims, wherein the centering member comprises a position support portion adapted to center itself and the reception element between the two lens-holding rings when the protrusion portion is inserted slidingly transversally into the reception element.
The measurement support device according to claim 3, wherein the position support element is funnel-shaped.
The measurement support device according to claim 4, wherein the position support element is symmetric. The measurement support device according to claim 5, wherein the symmetric and funnel-shaped position support element of the centering member is longitudinally centered between the two lens-holding rings when the protrusion portion is inserted slidingly transversally into the reception element.
The measurement support device according to any of the preceding claims, the reference member further comprising at least one visual reference, such as a ruler.
The measurement support device according to any of the preceding claims, wherein the centering member is adapted to be slidingly transversally inserted into the reception element in relation to the longitudinally extending spectacle frame such that the reception element is arranged in a fixed centered position longitudinally in relation to the two lens-holding rings.
9. The measurement support device according to any of the preceding claims, wherein the measurement support device is configured such that engagement of the reception element and the centering member centers the spectacle frame in relation to the reference member.
10. The measurement support device according to any of the preceding claims, wherein the centering member abuts the two lens-holding rings in an inserted position such that the centering member is not movable in the longitudinal direction of the spectacle frame.
1 1 . The measurement support device according to any of the preceding claims, wherein the centering member comprises a position support portion adapted to abut the two lens-holding rings when the centering member is in an inserted position such that the centering member is not movable in the longitudinal direction of the spectacle frame.
12. The measurement support device according to claim 1 1 , wherein the protrusion portion is an upper portion and the position support element is a lower portion of the centering member.
13. The measurement support device according to any of the preceding claims, wherein the reference member comprises a first ruler for indicating distances in the horizontal/longitudinal direction of the spectacle frame.
14. The measurement support device according to any of the preceding claims, the reference member further comprising at least one vertical element having a second ruler for indicating distances in the vertical direction of the spectacle frame, and wherein the at least one visual reference is arranged for indicating a position of the reference member in relation to the eye points of the subject.
15. The measurement support device according to any of the preceding claims, wherein at least one mounting element is at least one clip for maintaining the reference member in a fixed position in relation to the spectacle frame. 16. Use of the measurement support device according to any of the preceding claims for measuring of positions of eye points and/or pupillary distance of a subject.
PCT/EP2018/058821 2017-04-07 2018-04-06 Measurement support device for spectacle frame WO2018185264A1 (en)

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CN112120903A (en) * 2019-12-31 2020-12-25 未来穿戴技术有限公司 Main part and have its eye massage appearance

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US20160327814A1 (en) * 2013-12-30 2016-11-10 Essilor International (Compagnie Generale D'optiqu Apparatus, accessory, and method for determining the diameter of a lens to be mounted onto a glasses frame, or for controlling the mounting of a glasses lens onto a glasses frame

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GB725874A (en) * 1953-05-20 1955-03-09 Austin Benjamin Belgard Improved ophthalmic measuring device
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US4575946A (en) * 1983-09-03 1986-03-18 Bommarito Paul F Ophthalmic guide for multi-focal spectacles
JPH0898810A (en) * 1994-09-30 1996-04-16 Hoya Corp Eyepoint measuring tool
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