JP3855953B2 - Eyewear test aids - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spectacle wearing test aid, and in particular, for testing a wearer's line of sight in an intermediate range and a near range in order for the wearer to wear a progressive power lens comfortably, and to guide it to an appropriate position. The present invention relates to an eyeglass wear test aid.
[0002]
[Prior art]
The progressive power lens is a lens having two field parts having different refractive powers and a field part in which the refractive power changes progressively between them. Furthermore, a field of view having different refractive power can be obtained with one lens. For this reason, it is often used as a spectacle lens having a vision correction function such as presbyopia.
[0003]
FIG. 4 shows a general structure of a progressive power lens often used as a spectacle lens. The progressive power lens 100 is provided with a distance portion 101 which is a visual field portion for viewing objects at a long distance, and a visual field portion having a refractive power different from that of the distance portion 101 for viewing objects at a short distance. Is provided below as the near portion 102. The distance portion 101 and the near portion 102 are smoothly connected to each other by the intermediate portion 103 which is a visual field portion having a refractive power continuously changing in order to see an object at an intermediate distance between the long distance and the short distance. Yes.
[0004]
On the other hand, when wearing the progressive power lens 110 having the progressive power lens 100 as described above, it is very important to look at the field of view most suitable for the distance of the visual object. Otherwise, not only the visual acuity cannot be corrected, but it also causes image distortion and eye fatigue. In particular, for the visual field from the middle part (hereinafter also referred to as a progressive zone) to the near vision part, the wearer recognizes the near vision eye point (near vision center) 105 when prescribing and fitting glasses. The operator needs to test and guide the wearer's line of sight in the progressive power lens to the correct position so that it can be seen in the appropriate field of view.
[0005]
For these purposes, spectacle wearing test aids are conventionally used. This eyeglass wear test auxiliary tool is printed with a reference position mark for alignment with the hidden mark 106, which is the reference position of the lens, and the peripheral eye point portion is cut out and colored around it, and an adhesive is provided on the back surface. Transparent sheet. A reference position mark is attached to the hidden mark 106 of the spectacle lens 110 framed in the spectacle frame. The wearer can visually observe the near eye point 105 and train to get used to the position of the near eye point 105.
[0006]
2. Description of the Related Art Conventionally, a technique related to an auxiliary tool for framing a progressive-power lens has been devised as a technique that is different but similar to a spectacle wearing test. Patent Document 1 below discloses a frame assisting tool having a distance eye point hole and a near eye point hole. However, in recent years, the number of progressive power lenses has increased, and the length of the progressive zone has also varied. Therefore, in Patent Document 2 below, an identification mark indicating the distance from the distance portion is placed next to the near eyepoint hole. Corresponding to that by attaching. Further, Patent Document 3 below discloses a framing aid having a near eye point hole seal provided with positioning marks on both sides of the near eye point area and pasted in accordance with the positioning marks. These are frame assisting tools to the last, and are not suitable for glasses wearing test aids.
[0007]
[Patent Document 1]
Japanese Utility Model Publication No. 63-120225 [Patent Document 2]
Utility Model Registration No. 2503770 [Patent Document 3]
Utility Model Registration No. 2562256 [0008]
[Problems to be solved by the invention]
However, the position of the near eye point is determined by the amount of internalization taking into account the convergence of the eye toward the nose when viewing a nearby object, and the progressive zone length, which is the distance from the distance portion, and these values are There are considerable differences among individuals. In recent years, the manufacturing technology of progressive power lenses has advanced, and it has become possible to design and manufacture progressive power lenses according to the position of the near eye point of the wearer.
[0009]
Therefore, in the conventional spectacle wearing test auxiliary device in which the position of the near eye point is fixed, a huge number of the near eye point positions are required for the progressive power lens having such a design. And is not practical. Further, as disclosed in Patent Document 3 described above, there is a frame assisting tool that can respond to a change in the progressive band length, but there is no frame assisting tool that can respond to a change in the inset amount.
[0010]
The present invention has been made in view of the above circumstances, and provides an eyeglass-wearing test aid that can cope with a change in the position of a near eye point accompanying a change in the progressive zone length and the amount of inset. Objective.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a spectacle wearing test auxiliary tool according to claim 1 is characterized in that a reference position mark for aligning with a reference position of a progressive power lens, and a near portion from an intermediate portion of the progressive power lens Light transmission having a cut-out portion that pierces the region extending to the first area, a first in-position positioning mark having an in-center scale for displaying an in-position amount, and a first progressive zone length positioning mark having a progressive zone length scale for displaying a progressive zone length A test seal body, which is an adhesive sheet, a second inset positioning mark which is an inset index mark for alignment with the first inset positioning mark, and a progressive band length for alignment with the first progressive band length positioning mark The second progressive zone length positioning mark, which is an index mark, a near eye point hole indicating a near eye point, and an intermediate focus between distance and near eye above the near eye point hole An intermediate eyepoint hole showing a release, and an eye point seal a light transmitting sheet capable attached to the peripheral region of the cut-out portion of the test seal body.
[0012]
This eyeglass wear test auxiliary tool is made by aligning the reference position mark with a reference position such as a hidden mark provided on the spectacle lens and affixing the test seal body to the spectacle lens, and the second progressive band length positioning mark of the eye point seal Is positioned on the first progressive band length positioning mark of the test seal body, and when the second inward positioning mark is positioned on the first inward positioning mark and the eye point seal is pasted around the cut-out portion, The point hole can display near eyepoints specific to the wearer. The wearer can become familiar with the position of the near eye point by visually recognizing the near eye point hole.
[0013]
Therefore, this spectacle wearing test auxiliary tool can cope with changes in the progressive band length and the amount of inset, and can cope with changes in the positions of a number of near eyepoints in one type.
[0015]
Furthermore, by providing the intermediate eye point hole, it is possible to get used to the position of the intermediate focal length for distance and near. In addition, by positioning the eye mark seal alignment mark on the test seal body alignment mark and positioning the eye point seal progression band length index mark on the test seal body progress mark length scale, The near eye point hole can be arranged at an accurate position to display the near eye point as prescribed.
[0016]
According to a second aspect of the present invention, there is provided the spectacle wearing test auxiliary tool according to the first aspect, wherein the intermediate eye point hole is formed by a cutout portion communicating with an upper end edge.
[0017]
By making the middle eye point hole a notch communicating with the upper edge, the length of the middle eye point can be displayed and recognized.
[0018]
According to a third aspect of the present invention, there is provided a spectacle wearing test auxiliary tool according to the first or second aspect, wherein the eye point seal is provided with a dotted line-like hole capable of cutting an upper region.
[0019]
When the eye-point seal sticking position is on the top and the upper area of the eye-point seal enters the distance part due to the provision of a cut-out dotted hole, which obstructs the viewing of the distance part. The upper region of the eye point seal can be cut off from the cut line to ensure the visual recognition of the distance portion.
[0022]
The spectacle wearing test auxiliary tool according to claim 4 is the spectacle wearing test auxiliary tool according to any one of claims 1 to 3, wherein the test seal body and the eye point seal are attached to a single release sheet. Has been.
[0023]
When the test seal main body and the eye point seal are attached to a piece of release paper, the attachment to the spectacle lens can be performed quickly.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the spectacle wearing test aid of the present invention will be described, but the present invention is not limited to the following embodiments.
[0025]
FIG. 1 is a plan view showing an embodiment of a spectacle wearing test aid of the present invention. In this spectacle wearing test auxiliary tool, a pair of left and right is formed by cutting out various marks and cutouts printed on the rectangular light-transmitting adhesive sheet substrate 10. The pressure-sensitive adhesive sheet substrate 10 is adhered to a release paper (not shown). On the left side of the drawing is a spectacle wearing test aid (indicated as “R”) 1 for use in a progressive power lens for the right eye, and on the right side of the drawing for wearing a spectacle for use in a progressive power lens for the left eye. A test auxiliary tool (indicated as “L”) 1 is provided. The pair of left and right eyeglass wearing test aids 1 and 1 are formed in line symmetry. The nose is positioned between these glasses wearing test aids 1 and 1. Therefore, in this specification, the side from the center of FIG. 1 is the nose side, and the outside is the ear side.
[0026]
The spectacle wearing test auxiliary tool 1 includes two seals, a test seal body 2 and an eye point seal 3.
[0027]
In the vicinity of the upper end of the test seal main body 2, two standards displayed by circular lines surrounding the hidden mark for alignment with the two hidden marks 106 (see FIG. 4) that are the standard position of the progressive-power lens. A position mark 21 is provided. Although not shown, a cutout is provided along the inside of the circular line of the reference position mark 21. A horizontal reference line 22 passing through the centers of the two reference position marks 21 is provided. A vertical line is provided at the midpoint between the two reference position marks 21 so as to form a horizontal reference line 22 and a T shape, and the intersection of the T shape indicates a fitting point 23 of the spectacle lens. Below the fitting point 23, a rectangular cutout 24 that is long in the vertical direction is provided by cutting out a region extending from the intermediate portion of the progressive-power lens to the near portion. The cutout 24 has a size that can cover a change in position caused by individual differences in the near eye point. For example, the cutout 24 has a width of about 14 mm ± 4 mm, a length of about 23 mm ± 6 mm, and the position of the upper end. Is about 1 to 5 mm away from the horizontal reference line 22.
[0028]
On the side of the cutout portion 24 on the nose side, a first centering scale 25 is provided as a first centering positioning mark. In addition, a second internal scale 26 is provided below the cutout portion 24 as a first internal positioning mark. In the first and second inner scales 25 and 26, vertical lines are arranged, for example, every 1 mm, and a number indicating the amount of internal alignment is attached to each vertical line. The amount of inset is the amount by which the eyes approach the nose when looking at nearby objects. Generally, the distance between the viewpoints of the left and right eyes, the distance between the eyes and the spectacle lens, and the short distance It is calculated from the distance to the visual object. The position of the vertical line passing through the fitting point 23 is the position where the inward amount is zero.
[0029]
On the side of the cutout portion 24 on the ear side, a progressive belt length scale 27 is provided as a first progressive belt length positioning mark across the cutout portion 24. In the progressive zone length scale 27, horizontal lines are arranged, for example, every 2 mm, and the end reaches the side of the cutout portion 24 on the nose side. Each horizontal line is accompanied by a number indicating the distance from the horizontal reference line 22.
[0030]
A lens diameter scale 28 indicating the effective lens diameter is provided on the ear side of the progressive band length scale 27. The lens diameter scale 28 has a plurality of arc-shaped lines with different diameters centered on the fitting point 23, and a number indicating the distance from the center, for example, a number from 65 to 80 indicating the diameter of the lens fabric is shown for each line. Is displayed.
[0031]
The test seal body 2 includes the horizontal reference line 22, the reference position mark 21, the first inset scale 25, the second inset scale 26, the cutout portion 24, the progressive band length scale 27, and the lens diameter scale 28. A cutout 29 is formed on the surface. When the test seal main body 2 is peeled from the release paper, the inside of the cutout portion 24 and the circle of the reference position mark 21 remains on the release paper, and the test seal main body 2 is cut out.
[0032]
On the other hand, the eye point seal 3 is separate from the test seal body 2. A rounded quadrilateral cutout indicating the near eye point 105 is provided as the near eye point hole 31. The periphery of the near eye point hole 31 is bordered by colored printing to clearly show the near eye point hole 31. The shape of the near eye point hole 31 may be circular. The size is about 5 to 9 mm both vertically and horizontally so that a nearby object can be seen through the near eyepoint hole 31. Above the near eye point hole 31, a substantially U-shaped notch that communicates with the upper end edge indicating the intermediate eye point is provided as an intermediate eye point hole 32. The length of the intermediate eye point hole 32 is, for example, about 15 mm ± 5 mm, and the width is about 8 mm ± 3 mm. Colored prints with a length of about 3 mm are formed on opposite sides of the portion near the bottom of the U-shaped cutout to clearly indicate the position of the intermediate eye point. The shape of the intermediate eye point hole 32 is not limited to the substantially U-shaped cutout portion connected to the upper edge of the figure, and may be an independent cutout surrounded by the adhesive sheet base material 10. There is no limitation as long as an intermediate eye point such as an ellipse can be shown.
[0033]
A first inset index line 33 in the vertical direction is provided as a second inset positioning mark corresponding to the first inset scale 25 on the side of the nose side of the intermediate eye point hole 32. A second inward index line 34 in the vertical direction toward the center of the near eye point hole 31 is provided as a second inward positioning mark in a region below the lower edge of the near eye point hole 31. The second inset index line 34 corresponds to the second inset scale 26. Further, as the second progressive band length positioning mark in contact with the upper edge of the near eye point hole 31, a horizontal progressive band length index line 35 extends to both the nose side and the ear side of the near eye point hole 31. It is provided to extend long toward the ear side.
[0034]
A cutout 36 for separating the eye point seal 3 from the light transmissive sheet substrate 10 includes a first inset index line 33, a second inset index line 34, a near eye point hole 31, a progressive zone length index line 35, and an intermediate eye. An intermediate eye point hole forming portion 37 that is provided so as to include the point hole 32 and extends upward along both sides of the U-shaped intermediate eye point hole 32, and includes a first inset index line 33. The protrusion 38 is provided.
[0035]
In the middle eye point hole forming portion 37 above the eye point seal 3, a horizontal dotted line hole (perforation) across the middle eye point hole 32 is formed along the cut line 39 across the entire width of the upper part of the eye point seal 3. It is provided as. The upper region of the eye point seal 3 can be separated from the cut line 39 to reduce the vertical height. The position of the cut line 39 is about 8 mm ± 5 mm from the upper edge.
When the eye point seal 3 is peeled off from the release paper, the inside of the cutout forming the near eye point hole 31 remains on the release paper, and the near eye point hole 31 is formed in the eye point seal 3.
[0036]
The light-transmitting pressure-sensitive adhesive sheet base material 10 constituting the spectacle wearing test auxiliary tool 1 is flexible enough to be attached to a spectacle lens, is transparent, can be attached to the lens, and is easily and cleanly peeled off. It is preferable to have a tackiness that can be produced.
[0037]
A method of using the spectacle wearing test auxiliary tool 1 composed of the test seal body 2 and the eye point seal 3 will be described with reference to FIGS. In this description, an example in which a left eyeglass wearing test auxiliary tool (displayed as “L”) is used with respect to the progressive power lens for the left eye is shown.
[0038]
Two hidden marks 106 are formed as reference positions in the progressive-power lens 110 encased in the frame so as not to stand out. The printing showing the near eye point 105 and the far eye point 107 is often erased after the frame forming process and does not remain on the surface of the spectacle lens 110, but is indicated by a broken line for explanation.
[0039]
First, as shown in FIG. 2A, the test seal body 2 is peeled off from the release paper. When the test seal main body 2 is peeled from the release paper, the inside of the cutout portion 24 and the circle of the reference position mark 21 remains on the release paper, and the test seal main body 2 is cut out.
[0040]
Next, as shown in FIG. 2B, the two reference position marks 21 of the test seal body 2 are aligned with the two hidden marks 106 of the progressive addition lens 110, and the hidden mark is placed in the circle of the reference position mark 21. The test seal body 2 is affixed to the surface of the progressive-power lens 110 so that 106 is accommodated. As a result, the test seal body 2 is accurately positioned and fixed on the progressive addition lens 110.
[0041]
Next, as shown in FIG. 2B, the eye point seal 3 is peeled off from the release paper and separated. When the eye point seal 3 is peeled off from the release paper, the inside of the cutout forming the near eye point hole 31 remains on the release paper, and the near eye point hole 31 is formed in the eye point seal 3.
[0042]
Next, as shown in FIG. 2C, the first inset index line 33 is positioned on the first inset scale 25 according to the progressive zone length and the inset amount of the prescribed progressive addition lens 110, The second inset index line 34 is positioned on the second inset scale 26, and the progressive band length index line 35 is positioned on the progressive band length scale 27, and the eye point seal 3 is attached to the peripheral area of the cutout 24. Fix it. FIG. 2C shows a case where the progressive zone length is 12 mm and the infeed amount is 2.5 mm. The progressive zone length index line 35 is set to 12 lines of the progressive zone length scale 27 and the inward index line 33 is shown. , 34 are pasted in accordance with the intermediate positions between 2 and 3 of the inward scales 25 and 26. In this case, since the eye point seal 3 is affixed on the relatively upper side of the cutout portion 24, the second inset index line 34 is located above the second inset scale 26 and cannot be aligned. The inset index line 33 is aligned with the first inset scale 25. As a result, the near eye point hole 31 is accurately arranged at the position where the near eye point 105 as prescribed is displayed.
[0043]
As shown in FIG. 2 (c), when the upper part of the eye point seal 3 enters the distance portion and the visual recognition of the distance portion is affected, as shown in FIG. The upper region can be cut off from the cut line 39 to eliminate the influence on the distance portion.
[0044]
When the spectacle frame is small, the second internal scale 26 may protrude outside the frame. In that case, the amount of internal alignment is set by aligning the first internal alignment index line 33 with the first internal alignment scale 25.
[0045]
As shown in FIG. 3 (e), if the position where the eye point sticker 3 is attached is below the cutout portion 24, the second inset index line 34 can be aligned with the second inset scale 26.
[0046]
In the spectacle wearing test auxiliary tool 1 according to the present embodiment, the inward scales 25 and 26 are provided at two locations below and on the side of the cutout portion 24, and the internal alignment index lines 33 and 34 are at two locations below and on the side. Is provided. Because the change in the progressive zone length is large and there is a case where the inset index line cannot be adjusted by just one inset index line and the inset scale, the inset amount cannot be adjusted. By providing the inward index lines corresponding to 2 at two locations, the inset amount can be set for the entire region of the change in the progressive zone length.
[0047]
With the spectacle wearing test auxiliary tool 1 attached to the spectacle lens 110, the wearer wears spectacles, and the intermediate eye point hole 32 is used for an object at an intermediate distance, and the near eye point hole 31 is used for a short distance object. Testing whether the object is visible, suggesting the most appropriate field portion, testing the line of sight so that the object can be viewed in the appropriate field portion of the progressive power lens 110, and guiding to the correct position It becomes possible. As a result, the wearer can comfortably wear the progressive power glasses.
[0048]
The eyeglass wear test auxiliary tool 1 according to the present invention is used not only for checking and getting used to the eye position of the progressive addition lens after framed, but also by the purchaser when purchasing the progressive addition lens. The effective diameter of the lens necessary for the spectacle frame to be obtained can be known from the lens diameter scale 28. For example, in the case of the frame forming process shown in FIG. 2, since the portion with the largest lens diameter is about 68 mm, it can be seen that a lens fabric having an effective diameter of 70 mm may be used. As a result, it is possible to reduce the cost by eliminating waste of materials that are unnecessary for lens production.
[0049]
Thus, the spectacles wearing test auxiliary tool 1 of the present embodiment can cope with changes in the position of one kind of many near eyepoints. Therefore, it is not necessary to prepare many kinds of glasses wearing test aids, and the manufacturing cost can be reduced and complicated management can be omitted.
[0050]
In the above description, the first centering positioning marks of the test seal body 2 are the centering scales 25 and 26 for displaying the amount of centering, and the second centering positioning marks of the eye point seal 3 are the centering scales 25 and 26. In-position index lines 33 and 34 for alignment, the first progressive zone length positioning mark of the test seal main body 2 is a progressive zone length scale 27 for displaying the progressive zone length, and the second progressive zone of the eye point seal 3 The long positioning mark is described as the progressive zone length index line 35 that aligns with the progressive zone length scale 27. However, these scales are provided on the eye point seal 3, and these index lines are provided on the test seal body 2. You may make it provide.
[0051]
Further, although the near eye point hole 31 and the intermediate eye point hole 32 are separated from each other, they can be identified as one U-shaped cutout hole by printing. Further, the intermediate eye point hole 32 may not be provided.
[0052]
【The invention's effect】
The eyeglass wear test auxiliary tool of the present invention can cope with changes in the progressive band length and the amount of inset, and can cope with changes in the position of many types of near eyepoints, thereby reducing manufacturing costs. can do.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a test tool for wearing spectacles of the present invention.
FIGS. 2A to 2C are front views showing a method of using the spectacle wearing test aid of FIG.
FIGS. 3D and 3E are front views showing another method of using the spectacle wearing test aid of FIG.
FIG. 4 is a plan view illustrating the structure of a progressive power lens.
[Explanation of symbols]
1: Spectacle wearing test auxiliary tool 2: Test seal body 21: Reference position mark 22: Horizontal reference line 23: Fitting point 24: Cutout portion 25: First inner adjustment scale 26: Second inner adjustment scale 27: Progressive band length Scale 28: Lens diameter scale 3: Eye point seal 31: Near eye point hole 32: Intermediate eye point hole 33: First inset index line 34: Second inset index line 35: Progressive zone length index line 39: Cut line 10: Light transmissive adhesive sheet substrate 110: Progressive power lens 106: Reference position (hidden mark)
105: Near eye point

Claims (4)

A reference position mark for aligning with the reference position of the progressive-power lens, a cut-out portion that pierces an area from the intermediate portion to the near-use portion of the progressive-power lens, and an inward scale that displays an inward amount. A test seal body that is a light-transmitting sheet having a first inward positioning mark and a first progressive zone length positioning mark having a progressive zone length scale that displays the progressive zone length;
A second infeed positioning mark that is an inset index mark that aligns with the first inset positioning mark, and a second progressive zone length that is a progressive zone length index mark that aligns with the first progressive zone length positioning mark A positioning mark, a near eye point hole indicating a near eye point, and an intermediate eye point hole indicating an intermediate focal distance between distance and near, above the near eye point hole; An eyeglass wear test auxiliary tool, comprising: an eye-point seal that is a light-transmitting sheet that can be attached to a peripheral region of the cutout portion. The test aid for spectacles wearing test according to claim 1,
A test aid for spectacles wearing, characterized in that the intermediate eye point hole is formed by a cutout portion communicating with the upper edge. The auxiliary test equipment for spectacles wearing test according to claim 1 or 2,
A test tool for spectacles wearing test, wherein the eye point seal is provided with a dotted line-like hole capable of cutting the upper region. In the spectacles wearing test auxiliary tool according to any one of claims 1 to 3,
The auxiliary test tool for spectacles wearing, wherein the test seal main body and the eye point seal are adhered to one release paper.

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