EP4370969A1 - Vorsatzgläser für gleitsichtbrillen - Google Patents
Vorsatzgläser für gleitsichtbrillenInfo
- Publication number
- EP4370969A1 EP4370969A1 EP22733423.2A EP22733423A EP4370969A1 EP 4370969 A1 EP4370969 A1 EP 4370969A1 EP 22733423 A EP22733423 A EP 22733423A EP 4370969 A1 EP4370969 A1 EP 4370969A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lenses
- area
- areas
- progressive
- refractive power
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/08—Auxiliary lenses; Arrangements for varying focal length
- G02C7/086—Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C9/00—Attaching auxiliary optical parts
- G02C9/04—Attaching auxiliary optical parts by fitting over or clamping on
Definitions
- Attachment lenses for varifocal glasses The invention relates to attachment lenses for varifocal glasses for adjusting the refractive power.
- ametropia In Germany, it is estimated that more than 70% of adults are ametropia.
- the most common ametropia include nearsightedness, farsightedness and so-called astigmatism.
- Such ametropia is usually corrected by glasses with ground lenses, short-sightedness being compensated for by concave ground lenses, far-sightedness by convex ground lenses and astigmatism by differently curved lenses.
- these glasses have a certain refractive power, which is given in dioptres. Positive diopter values stand for the correction of long-sightedness, negative diopter values for the correction of short-sightedness.
- presbyopia In addition to the ametropia mentioned, there is also presbyopia.
- the eye can be normal-sighted, but just as well be short, far-sighted or astigmatism.
- presbyopia the eye is no longer able to switch quickly and easily (accommodation) from the far range (far-sightedness) to the near range (short-range vision). It requires lenses that can be used to correct both distance and close-up vision.
- Lenses with different refractive powers were developed in order to save these people having to constantly switch between their glasses to correct their distance vision and their near vision.
- Varifocal lenses have more than three different refractive powers that gradually merge into one another. Most commonly, three-zone progressive lenses are found, with an upper zone for distance vision, a lower zone for near vision, and a middle zone for intermediate vision.
- the known magnifying glasses and corrective lenses have the disadvantage that they are only suitable for spectacle lenses with a uniform power or for bifocal lenses, since they change the refractive power overall with a uniform diopter value. Accordingly, they are not suitable for progressive lenses. It is therefore the object of the invention to provide attachment lenses for varifocals which overcome the disadvantages mentioned and enable the wearer of varifocals to adapt their existing varifocals to different vision requirements as simply as possible.
- the front lenses according to the invention for adjusting the refractive power of progressive lenses comprise three usable areas arranged essentially vertically one above the other, namely an upper, a middle and a lower area, as is fundamentally also known from standardized progressive lenses.
- the front lenses have a continuous degression of the refractive power from a first value, the starting value, in the upper range to a second value, the final value, in the lower range.
- a stepless degression is advantageous, since there are no hard transitions between the visual areas through the Attachment glasses are provoked and the user also perceives a pleasant progressive vision with the attachment glasses.
- the refractive power of the initial value in the upper range is according to claim 7 preferably between -1.00 and +5.00 diopters and in particular between 0.00 and +4.00 diopters, the selection of the strength of the special
- the refractive power of the final value in the lower range is preferably between -2.00 and +4.00 diopters, more preferably between -1.00 and +3.00 diopters and in particular at 0.00 diopters, with the selection here too the strength depends on the special requirements of the front lenses.
- the front lenses preferably have a larger number of diopters in the upper area than in the lower area, for example +1.00 diopter in the upper area and 0.00 diopter in the lower area or +2.00 diopter in the upper area and + 1.00 diopter in the lower range or 0.00 diopter in the upper range and -1.00 diopter in the lower range or +0.75 diopter in the upper range and -0.25 diopter in the lower range.
- the stepless degression from the initial value to the final value preferably takes place only in the middle range. This is advantageous because a degression over a certain, relatively short range is perceived as pleasant and less irritating than a degression over a longer range.
- the middle area is smaller than the upper area and the upper area is the same size or smaller than the lower area.
- the attachment lenses essentially correspond to the reverse division of standardized varifocal glasses, in which the upper area is usually the largest and the lower area is the second largest area.
- the upper area is the same length or shorter than the lower area
- the middle area is the shortest area, ie shorter than the upper and lower areas.
- This division of the viewing areas is advantageous in order to enable the wearer of the supplementary lenses to have the best possible view, particularly in the upper and lower areas to be corrected.
- the middle region preferably has a maximum vertical extent of 10 to 18 mm and a minimum vertical extent of 8 mm to 14 mm.
- the vertical extent of a panel is the height of the top, middle or bottom of the panel as measured by a line drawn vertically and vertically through the center of the lens.
- the front lenses according to the invention have a further difference from known progressive lenses.
- the close-up area ie the lower area of the lenses
- This so-called inset is standardized at around +2.50 mm.
- the inset depends on the given degression.
- the inset in the front lenses preferably corresponds to only +1.00 to +1.50 mm and thus roughly half the inset of a corresponding progressive lens.
- the optical center of the front lens in the upper area must then be incorporated in a front clip, preferably offset by + 1.00 to + 1.50 mm in relation to the far point centering of the progressive lens, so that the shift in the optical center of the front lens and the inset of the front lens in the Total value again corresponds to the inset of the progressive lens.
- the additional offset is then approximately +1.00 mm for each additional diopter.
- the inset remains the same as long as the degression is still only 1 diopter. Furthermore, the larger the degression, the smaller the inset becomes. With a degression of 2 dioptres, the inset is usually only 0.00 to +0.50 mm.
- the inset can also become an offset to the outside, which can then be up to -2.00 mm. It has also proven particularly advantageous if the degression is between 0.75 and 2.00 diopters and in particular exactly 1.00 diopters. Such a degression is felt to be particularly pleasant and is sufficient in most situations to bring about a sufficient adjustment of the refractive power.
- the front lenses are intended to allow the wearer of glasses with progressive lenses good close-up vision even through the upper area of his lenses intended for long-distance vision.
- a degression is provided for the front lens starting from an initial strength in the upper range to a final strength in the lower range, with the degression from the initial strength to the final strength taking place in the middle range.
- the starting power differs from the final power by 1 diopter.
- the lenses according to the first preferred embodiment for example, with a strength of + 0.75 to + 1.00 diopter in the upper area and a strength of - 0.25 to 0.00 diopter in the lower area particularly well for varifocals wearers whose Visual requirements often alternate between long-distance and intermediate ranges. These are, for example, salespeople who have to switch more frequently from the desk to the customer, or nurses who have to quickly go from the computer to the patient and who need the support for the intermediate distance again with the patient. A constant change of glasses can be avoided by attaching the appropriate attachment lenses.
- Attachment lenses with a strength of +1.25 to +1.75 diopters in the upper area and a strength of +0.25 to +0.75 diopters in the lower area are particularly suitable for converting normal progressive lenses into reading glasses. This variant is also suitable for sewing, embroidery or knitting. You get a significant improvement in the upper range for close distances and a slight gain for reading.
- Other examples include attachment lenses with a lens power of 0.00 diopter at the top and a power of -1.00 diopter at the bottom.
- This variant is suitable, for example, for mountain hikers or golfers who, with the intention, can continue to use their long-distance range unchanged, but who can better recognize bumps on the ground when hiking or the tee shot when playing golf thanks to the weakening in the close-up range.
- Another example includes attachment lenses with a lens power of +0.25 to +0.50 diopter in the upper range and a power of -0.75 to -0.50 diopter in the lower range.
- Such a variant is particularly suitable for wearers of varifocal glasses who mainly use the intermediate area in everyday life, such as tilers, who recognize the wall tiles better due to the slight plus effect in the upper area, but at the same time increase the depth of field to the floor due to the weakening effect in the close-up area, and This gives you a better view of the floor area.
- an attachment clip according to the invention for adjusting the refractive power for varifocal glasses comprises a clip with the attachment lenses according to the invention, the clip being suitable for fixing to the frame of varifocal glasses.
- Foldable spectacle attachments that can be attached to the existing glasses and allow the attachment lenses to be folded forwards and backwards in front of the actual varifocal lenses are particularly practical for frequent changes. In this way, the attachment lenses can simply be folded in front of the progressive lenses if required and then removed from the field of view again.
- the invention also includes a kit with progressive lenses and at least one attachment clip according to the invention.
- the advantages of the front lenses according to the invention are on the Fland.
- a front clip equipped with the front lenses according to the invention is significantly cheaper than a second pair of glasses.
- the front lenses according to the invention with the inventive division of the vision areas and the provision of the front lenses as progressive lenses offer the user a particularly pleasant and comfortable view due to the gentle degression, which cannot be achieved with simple front lenses with a uniform or graded refractive power.
- FIG. 1 shows the schematic representation of the visual zones of a progressive lens, a supplementary lens according to the invention and the resulting visual zones of a combination of progressive lens and supplementary lens;
- Fig. 2 shows the schematic representations according to
- FIG. 1 shows schematically the distribution of the vision zones A, B, C and the largely blurred edge zones RB of a standardized progressive lens I.
- Zone A is intended for the distance zone, zone C for the near zone and zone B for the intermediate zone.
- the exact size of the areas A, B, C, RB depends on various parameters.
- the areas A, B, C are arranged vertically one above the other. Accordingly, area A is the upper area, area B is the middle area and area C is the lower area. Laterally, the areas A, B, C are delimited to a greater or lesser extent by the blurred edge area RB.
- the areas A, B, C also have a different vertical extension along a vertical line v, which runs imaginatively perpendicularly through the center of the glass.
- the size of the areas A, B, C that can actually be used with varifocal lenses depends on the lens thickness, the individual parameters of the user such as eye relief, forward tilt of the glasses, distance between the lens and the eye, deflection of the frame and the depth of the anterior chamber of the eye and, above all, the required addition (reading supplement) at close range.
- the more of these individual parameters are used in glass production the more comfortable, larger and better the individual areas A, B, C can be used. In this case, the stronger the required near addition, the smaller the actually usable areas A, B, C of the lens and the larger the unusable edge area RB.
- the usable areas are therefore significantly narrower with an addition of 2 diopters in all areas A, B, C than, for example, with an addition of only 1 diopter.
- FIG. 1 also shows the front lenses II according to the invention for front clips.
- the division of the areas A′, B′, C′ in the front lenses has been changed.
- the area C' is now the largest area with the greatest horizontal and vertical extent and the area B' is even smaller, especially in the vertical extent, than the area B of a standardized progressive lens I.
- This preferred division of the areas A′, B′, C′ in the front lenses II according to the invention corresponds almost to an inverse division of the areas A, B, C of a standardized progressive lens I with a compressed middle area B′, i.e. with a reduced vertical extent, and a enlarged area C'.
- a fixed refractive power is provided in areas A' and C' and the degression from the refractive power in area A' to the refractive power in area C' takes place exclusively in area B'.
- Such a division of the areas A′, B′, C′ is advantageous in order to enable the wearer to have the best possible view when using the front lenses I, as is described in detail in the following projection III.
- FIG. 1 also shows the areas Ar, B1r, B2r, Cr, RBr resulting from the superimposition or addition of the refractive powers of the progressive lenses I and the front lenses II.
- the area Ar therefore results from the intersection of the areas A and A', the area B1r from the intersection of the areas B and B', the area B2r from the intersection of the areas B and C' and the area Cr from the intersection of the areas C and C'.
- the resulting areas Ar, B1r, B2r, Cr therefore correspond to the intersections of the overlapping areas.
- the edge areas RBr resulting from this superimposition result from an addition of the individual edge areas RB, RB'.
- the resulting areas RBr each form the union of the overlapping areas RB and RB′.
- the edge area RBr is therefore larger than the original edge area RB of the progressive lenses I. Accordingly, only the areas Ar in the outer area are somewhat more restricted by the wider edge area RB' of the supplementary lenses II than in the regular progressive lenses I. This is due to the advantage of the better Seeing in this area, however, more than lifted.
- the original area B for the intermediate view is divided by the areas B' and C' into two sub-areas B1r and B2r, which advantageously leads to a transition area B1r, B2r that is felt to be very pleasant, but since the small area B' does not allow a rapid abrupt degression is implemented in the attachment lenses II.
- the size of the area Cr then corresponds to the original area C.
- FIG. 2 the preferred horizontal extension or also vertical extension of the individual areas of the progressive lenses I, the front lenses II and the resulting areas III are illustrated again using horizontal auxiliary lines h.
- the area A′ of the front lenses II in its vertical extent 1 preferably corresponds to the area A of the progressive lenses I.
- the area C' of the front lenses extends vertically 3, 4, preferably over the area C, 4 of the progressive lenses I to the area B, 3.
- the area B′ of the front lenses extends vertically preferably over the upper half and in particular at most over two thirds of the area B, 2 of the progressive lenses I.
- the preferred vertical ratio of the areas A':B':C' of the front lenses II is between 4:1:4 and 3:2:5.
- the areas A' and C' can accordingly be provided with almost the same maximum vertical extension , but the area B' is greatly shortened in comparison to the area B in standardized sliding lenses I.
- the preferred horizontal ratio of the areas A':B':C' of the front lenses II is between 5:2:5 and 3:2:6.
- the areas A' and C' can accordingly have almost the same maximum horizontal extent be provided, but the area C 'can also be provided significantly wider than the area A'.
- the preferred area ratio of the areas A':B':C' of the front lenses II is between 5:2:5 and 4:2:6. Accordingly, almost the same area can be provided for the areas A' and C', the area However, C' can also be significantly larger than the area A'.
- a large lower area C' is advantageous for the front lenses II, as this means that the middle area B, which is always sensitive in the case of progressive lenses I, and the close-up area C are hardly disturbed by the front lenses II.
- Figure 2 also shows that the preferred division of the areas A', B', C' in the front lenses II according to the invention corresponds almost to the reverse division of a standardized progressive lens I, with the middle area B' compared to the area B of a progressive lens I is vertically compressed and the area C' of the front lenses II according to the invention is enlarged compared to the area C of a progressive lens I.
- the size of the edge areas RB' should always be kept as small as possible.
- the division of the front lenses according to the invention is suitable for a large number of applications in order to adapt the refractive power of existing progressive lenses to specific needs of the user.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
- Eyeglasses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021118465.7A DE102021118465B3 (de) | 2021-07-16 | 2021-07-16 | Vorsatzgläser für Gleitsichtbrillen, Vorsatzclip und Kit umfassend eine Gleitsichtbrille und zumindest einen Vorsatzclip |
| PCT/EP2022/066195 WO2023285062A1 (de) | 2021-07-16 | 2022-06-14 | Vorsatzgläser für gleitsichtbrillen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4370969A1 true EP4370969A1 (de) | 2024-05-22 |
Family
ID=82196591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22733423.2A Withdrawn EP4370969A1 (de) | 2021-07-16 | 2022-06-14 | Vorsatzgläser für gleitsichtbrillen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4370969A1 (de) |
| DE (1) | DE102021118465B3 (de) |
| WO (1) | WO2023285062A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6027214A (en) | 1998-02-13 | 2000-02-22 | Graham; Deborah L. | Detachable corrective lens assemblies |
| JP4400549B2 (ja) * | 2005-02-04 | 2010-01-20 | セイコーエプソン株式会社 | 組み合わせ眼鏡レンズ及び組み合わせ眼鏡レンズの玉型加工方法 |
| KR100947351B1 (ko) * | 2008-03-20 | 2010-03-15 | 장종발 | 누진다초점렌즈 전용 테스트 안경 및 이를 이용한 테스트방법 |
| CN106461978A (zh) | 2014-05-11 | 2017-02-22 | 艾得安光学有限公司 | 将眼镜镜片转换为渐进式镜片的粘附式光学膜片 |
| CN109696754A (zh) * | 2017-10-20 | 2019-04-30 | 鸿富锦精密工业(深圳)有限公司 | 套镜以及具有该套镜的多功能眼镜 |
| CH714674B1 (de) * | 2018-02-23 | 2021-10-29 | Dr Andreas Binder Prof | Brille. |
-
2021
- 2021-07-16 DE DE102021118465.7A patent/DE102021118465B3/de active Active
-
2022
- 2022-06-14 EP EP22733423.2A patent/EP4370969A1/de not_active Withdrawn
- 2022-06-14 WO PCT/EP2022/066195 patent/WO2023285062A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023285062A1 (de) | 2023-01-19 |
| DE102021118465B3 (de) | 2022-09-15 |
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