• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an ophthalmic lens (1) having a substrate (13), said lens having a transmission spectrum such that: - the average transmission in the range of wavelengths between 380nm inclusive and 780nm inclusive is less than 60 %. the average transmission at wavelengths less than or equal to 400 nm is less than 1%, preferably 0.5%, very preferably less than 0.1%, average transmission at wavelengths greater than 400 nm and less than 500 nm inclusive is less than 30% with a minimum of transmission (100) less than 10%, preferably less than 5%, very preferably less than 1% between 425 nm and 445 nm inclusive.
    公开号:FR3032283A1
    申请号:FR1550796
    申请日:2015-02-02
    公开日:2016-08-05
    发明作者:Sebastien Martins；Didier Clerc；Franck Ledien
    申请人:BNL Eurolens SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an ophthalmic lens, especially for sunglasses.
    [0002] The wearing of sunglasses, especially when it is very bright is medically highly recommended to preserve its potential for long-term vision and also for safety reasons for example when driving. Indeed, sunglasses are a barrier against UV rays. Numerous studies have shown that UV rays can cause lesions, inflammations or alterations of the cornea, lens or retina. In order to avoid these effects and especially a modification of the eye which can diminish the long-term vision, more and more people are encouraged to wear sunglasses to avoid exposure to excessive light intensity. In addition, sunglasses also help fight against glare, which increases safety when driving or sports activities. This is why sunglasses generally sold today block any radiation with a wavelength of less than 400 nm. However, medical studies in recent years have shown that a wavelength range around 435nm (+/- 20nm), also known as bad blue or bad blue, plays an important role. for example in age-related macular degeneration (AMD or AMD). It is a cumulative process over the course of life that becomes troublesome especially for people over 60 years of age.
    [0003] In order to remedy these problems, ophthalmic lenses having filtration properties in the visible blue part of the spectrum between 400 nm and 480 nm are known. However, these known ophthalmic lenses are not entirely satisfactory insofar as a portion of the "good blue" between 450 nm and 480 nm is also significantly attenuated, which adversely affects the visual spectral perception of the wearer of the sunglasses. In addition, there is an alteration of the perceived contrast by the user which can be a safety disadvantage, especially for driving. The invention therefore aims to provide an improved ophthalmic lens to at least partially solve the disadvantages of the prior art. To this end, the subject of the invention is an ophthalmic lens 15 comprising a substrate, said lens having a transmission spectrum such that: the average transmission in the range of wavelengths between 380 nm inclusive and 780 nm inclusive is less than 60%. The average transmission at wavelengths less than or equal to 400 nm is less than 1%, preferably less than 0.5%, very preferably less than 0.1%, the average transmission at wavelengths longer than 400 nm and less than 500 nm inclusive is less than 30% with a transmission minimum of less than 10%, preferably less than 5%, most preferably less than 1% between 425 nm and 445 nm inclusive.
    [0004] Thanks to these properties, the ophthalmic lens according to the invention is able to filter with a high efficiency, and thus to protect the eye of the wearer, the wavelengths corresponding to the ultraviolet ones, but also the wavelengths. corresponding to the wrong blue, while preserving the colorimetric characteristics of the lens. Indeed, although cutting the wrong blue, the lens allows sufficient transmission of blue, especially with respect to the spectrum of perception of colors by the eye. In addition, it allows to have a tinted glass with blue shades because it does not cut all the blue. Finally, ophthalmic lenses intended for sunglasses must meet certain criteria relating to the perception of tints by the wearer. In particular, such lenses must comply with IS012312-1: 2013 and ANSI Z80.3-2001 which defines criteria for their wearing as part of a driving activity of a vehicle. Thus ophthalmic lenses for sunglasses must not in particular change the perception of the color of the road signs. The ophthalmic lenses according to the invention thus guarantee excellent transmission protection for a wearer by virtue of the simultaneous combination of the following factors: a reduced transmission over the entire visible spectrum due to their solar characteristics; - absorption of UV wavelengths, - very efficient absorption of bad blue, - maintenance of a transmission in the "good blue", and - compliance with I5012312-1: 2013 and / or ANSI Z80.32001 thus providing port security during a driving activity of a vehicle.
    [0005] The ophthalmic lens may have one or more of the following characteristics: The average transmission in the wavelength range between 400 nm and 500 nm has, for example, a first transmission maximum between 405 nm and 425 nm at least six times greater than the transmission of the transmission. first transmission minimum. According to one aspect, the first minimum is located at 435 nm with a precision of +/- 5 nm, preferably with an accuracy of +/- 2 nm. In another aspect, the first minimum is an absorption peak with an absorption rate greater than 95% and preferably greater than 99.5%. The absorption peak may have a quarter-high width of 50 nm or less, and a mid-height width of 30 nm or less, and a width two-thirds of the absorption peak of 20 nm or less. According to yet another aspect, the transmission at the first maximum is greater than 1%, preferably greater than 4%. In another aspect, transmission in the wavelength range of 440nm to 500nm increases. The average transmission between 380 and 780 nm inclusive may be less than 35%, especially less than 25% and preferably less than 18%. The average transmission between 400 nm and 450 nm is, for example, less than the average transmission between 450 nm and 650 nm and the average transmission between 450 nm and 650 nm is, for example, less than the average transmission between 650 nm and 780 nm.
    [0006] In another aspect, the ophthalmic lens is suitable for driving according to the I5012312-1: 2013 standard. The ophthalmic lens may comprise a polarizing assembly.
    [0007] The substrate comprises, for example, a thermoplastic material, in particular polycarbonate. The invention also relates to a method for optimizing a color of an ophthalmic lens for compliance with the standard: I5012312-1: 2013 with respect to a given spectrum, in which the transmission of the lens is increased. around 405nm to 425nm on the one hand and between 440nm and 450nm on the other hand and the transmission in the wavelength range between 430nm and 440nm is reduced. Other characteristics and advantages of the invention will appear more clearly on reading the following description, given by way of illustrative and nonlimiting example, and the accompanying drawings showing: FIG. 1 is an example of an ophthalmic lens According to the invention, FIG. 2 is a graph showing the transmittance of a first example of an ophthalmic lens according to the invention as a function of the wavelength. FIG. 3 is a graph showing the transmittance of a second example of an ophthalmic lens according to the invention as a function of the wavelength. In all the figures, the identical elements bear the same reference numbers. An example of an embodiment will now be described with reference to the figures.
    [0008] The following achievements are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Simple features of different embodiments may also be combined to provide other embodiments. By average transmission between two wavelengths X 1 and X 2, for example, the ISO 11664-1 and ISO 11664-2 definitions are taken into account. More specifically, the average transmission can be defined as: 22 tv = 100 x SD65W VWd, SD65W VW Where 15 X is the wavelength in nanometers, T (X) is the spectral transmittance of the lens V (X) is the spectral luminescence efficiency function for a vision, SD65 (X) is the spectral distribution according to the CIE standard (see ISO 11664-2) FIG. 1 is a schematic cross-sectional view of an exemplary embodiment of a lens Ophthalmic 1 according to the invention. This ophthalmic lens 1 is tinted and for example intended to be used for glasses, in particular sunglasses. To do this it is only necessary to shape the outer edge 3 according to the desired shape of the frame of the frame.
    [0009] Ophthalmic lens means a correction lens or not, finished or semi-finished, adapted to be mounted in a frame, for example a spectacle frame, a mask and a visor. The solar ophthalmic lens may be tinted or unstained, or have a color gradient, and may include other solar functions such as a polarizing, photochromic function alone or in combination. It may also include other additional functions, alone or in combination among the following non-exhaustive list: shockproof, anti-scratch, anti-abrasion, anti-reflection, mirror, antifouling, anti-fog, anti-static. These additional functions can be performed according to conventional methods (soaking, spin, spray, vacuum deposition, spin coating, spray deposition ...). The tinted ophthalmic lens 1 comprises for example a polarizing assembly 5 composed of at least a first 7 and a second 9 layers of a thermoplastic or thermosetting material sandwiching a polarizing film 11. Of course, this set The polarizer 5 with its layers 5, 7 and 9 is optically transparent, i.e. it passes light. As seen in Figure 1, the ophthalmic lens 1 further comprises at least a third substrate layer 13 of a thermoplastic material, for example polycarbonate, tinted or colored transparent adhering by injection to the second layer 9. A for example, the polarizing assembly 5 has a thickness el between 0.3 and 1mm and the third substrate layer 13 have a thickness e2 between 0.5 and 2mm.
    [0010] The polarizing film is for example a polyvinyl alcohol film (PVA) known for its polarizing properties. For glasses use, the layer 13 will be the one intended to be the closest to the eye of the user and the layer 7 the one furthest away from the eye of the user. As mentioned above, the two layers 7, 9 may be made of a thermoplastic or thermosetting material, and the layer 13 may be made of a thermoplastic material. As a thermoplastic material, it is possible for example to choose from the following group: polymethyl (meth) acrylate, polycarbonate, polycarbonate / polyester blends, polyamide, polyester, cyclic olefin copolymers, polyurethane, polysulfone, TAC (cellulose triacetate) and their combination As a thermosetting material, it is possible, for example, to use a transparent material such as CAB (cellulose acetate butyrate). To color the thermoplastic material, it is possible to add pigments or dyes. It can be organic or mineral pigments. Among these, there is in particular the pigment marketed under the reference ABS549 of the company EXCITON (registered trademark) which is a specific absorber of small width in wavelength. In the present case, the substrate formed by the layer 13 comprises several dyes, in particular ABS549, which cooperate together in order to absorb the light passing through the lens, the lens having a transmission spectrum such as, as seen in FIGS. and 3 showing two examples of spectra, one for a gray glass when viewed by an outside observer (Figure 2) and the other for a brown glass when viewed by an outside observer (Figure 3): the average transmission in the range of wavelengths between 380nm inclusive and 780nm inclusive is less than 60%. the average transmission at wavelengths less than or equal to 400 nm is less than 1%, preferably 0.5%, very preferably less than 0.1%, the average transmission at wavelengths greater than 400 nm and less than 500 nm included is less than 30% with a minimum of transmission designated by the reference 100 less than 10%, preferably less than 5%, very preferably less than 1% between 425 nm and 445 nm inclusive. In addition, the transmission at wavelengths between 405nm and 425nm which is non-zero, has a first transmission maximum designated by reference 105, at least 100% greater than the transmission at the first 100 minimum of transmission, The first maximum 105 is at least six times greater than the transmission of the first minimum of 100 transmission. The transmission at the first minimum 100 is less than 5%, preferably less than 0.5% (for the spectrum version of Figure 3). The first minimum 100 is an absorption peak with an absorption rate greater than 95% and preferably greater than 99.5%. In more detail, the absorption peak 100 has a quarter-height width of 50 nm or less, and a mid-height width of 30 nm or less, and a width two-thirds the height of the absorption peak 100 of 20nm or less.
    [0011] Mid-height is where the absorption is half of the maximum absorption. The quarter height is where the absorption is one quarter of the maximum absorption. The two-thirds height is where absorption is two-thirds of the maximum absorption. The first minimum 100 is located at 435 nm with a precision of +/- 5 nm, preferably with an accuracy of +/- 2 nm. It can therefore be seen that the bad blue is well filtered by the lens 1 according to the invention while transmitting at least a portion of the blue wavelengths of the visible light spectrum, which is not harmful for the human eye and can therefore serve for safe vision. It is thus understood that in this way a more protective lens of the eye is obtained while inducing only a slight distortion of the perception of contrasts and colors. The first maximum transmission 105 is greater than 1%, preferably greater than 4%. The transmission in the wavelength range between 440 nm and 500 nm rises in particular for the "brown" version of FIG. 3. Depending on the class of sunglasses, the average transmission between 380 and 780 nm inclusive is less than 35. %, especially less than 25% for class 2 and preferably less than 18% for class 3. For the two examples of Figures 2 and 3, the average transmission between 400nm and 450nm is lower than the average transmission between 450nm and 650nm and the average transmission between 450nm and 650nm is lower than the average transmission between 650nm and 780nm.
    [0012] With regard to the "brown" version of Figure 3, the average transmission between 400nm and 500nm is lower than the average transmission between 500nm and 650nm and the average transmission between 500nm and 650nm is lower than the average transmission between 650nm and 780nm. From a colorimetric point of view, the colorimetric characteristics of the colorimetric CIE model with L between 36.0 and 37.0, in particular 36.83, ranged from 6.0 to 7.5, especially 6.91, and b ranged from 18.0 to and 19.5, in particular 18.95.
    [0013] In addition, the ophthalmic lens is thus adapted to driving according to the IS012312-1: 2013 standard. It is therefore clear that the ophthalmic lenses according to the invention make it possible to protect the human eye more effectively against the bad blue without the the non-detrimental part of the blue is too attenuated. Other variants are possible without departing from the scope of the present invention. Thus, the substrate, the layer 13 can be cut to provide further optical correction to the vision of the user. The layer 13 can be sandwiched between the polarizing assembly and another layer, for example made of crystal or colored polycarbonate. In this case, it may be this last layer which is cut / polished to provide an optical correction and not the layer 13.
    权利要求:
    Claims (13)
    [0001]
    REVENDICATIONS1. An ophthalmic lens (1) having a substrate (13), said lens having a transmission spectrum such that: - the average transmission in the wavelength range of between 380nm inclusive and 780nm inclusive is less than 60%. the average transmission at wavelengths less than or equal to 400 nm is less than 1%, preferably 0.5%, very preferably less than 0.1%, the average transmission at wavelengths greater than 400 nm and less than 500 nm included is less than 30% with a minimum of transmission (100) less than 10%, preferably less than 5%, very preferably less than 1% between 425 nm and 445 nm inclusive.
    [0002]
    2. Ophthalmic lens according to claim 1, characterized in that the average transmission in the wavelength range between 400nm and 500nm has a first transmission maximum (105) between 405nm and 425nm at least six times higher than the transmission the first transmission minimum (100).
    [0003]
    3. Ophthalmic lens according to any one of claims 1 to 2, characterized in that the first minimum (100) is located at 435nm with a precision +/- 5nm, preferably with an accuracy of +/- 2nm.
    [0004]
    4. Ophthalmic lens according to claim 3, characterized in that the first minimum (100) is an absorption peak with an absorption rate greater than 95% and preferably greater than 99.5%.
    [0005]
    An ophthalmic lens according to claim 4, characterized in that the absorption peak (100) has a quarter-height width of 50 nm or less, and a half-height width of 30 nm or less, and a width at two third of height of the absorption peak (100) of 20nm or less.
    [0006]
    6. Ophthalmic lens according to any one of claims 1 to 5, characterized in that the transmission to the first maximum (105) is greater than 1%, preferably greater than 4%.
    [0007]
    7. Ophthalmic lens according to any one of claims 1 to 5, characterized in that the transmission in the wavelength range between 440nm and 500nm increases.
    [0008]
    8. Ophthalmic lens according to any one of claims 1 to 7, characterized in that the average transmission between 380 and 780 nm inclusive is less than 35%, especially less than 25% and preferably less than 18%.
    [0009]
    9. Ophthalmic lens according to any one of claims 1 to 8, characterized in that the average transmission between 400nm and 450nm is lower than the average transmission between 450nm and 650nm and the average transmission between 450nm and 650nm is lower than the average transmission between 650nm and 780nm.
    [0010]
    10.Ophthalmic lens according to any one of the preceding claims adapted to driving according to IS012312-1: 2013.
    [0011]
    11.Ophthalmic lens according to any one of claims 1 to 10, characterized in that it comprises a polarizing assembly (5).
    [0012]
    12.Ophthalmic lens according to any one of the preceding claims, characterized in that the substrate comprises a thermoplastic material, in particular polycarbonate.
    [0013]
    13.A method of optimizing a color of an ophthalmic lens to conform to the standard: IS012312-1: 2013 with respect to a given spectrum, in which the transmission of the lens around is increased in the range between 405nm and 425nm on the one hand and between 440nm and 450nm on the other hand and the transmission is reduced in the wavelength range between 430nm and 440nm.15
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    法律状态:
    2016-02-17| PLFP| Fee payment|Year of fee payment: 2 |
    2016-08-05| PLSC| Publication of the preliminary search report|Effective date: 20160805 |
    2017-02-23| PLFP| Fee payment|Year of fee payment: 3 |
    2018-02-27| PLFP| Fee payment|Year of fee payment: 4 |
    2020-02-25| PLFP| Fee payment|Year of fee payment: 6 |
    2021-02-23| PLFP| Fee payment|Year of fee payment: 7 |
    2022-02-23| PLFP| Fee payment|Year of fee payment: 8 |
    2022-02-25| CA| Change of address|Effective date: 20220117 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1550796A|FR3032283B1|2015-02-02|2015-02-02|OPHTHALMIC LENS, IN PARTICULAR FOR SUNGLASSES|
    FR1550796|2015-02-02|FR1550796A| FR3032283B1|2015-02-02|2015-02-02|OPHTHALMIC LENS, IN PARTICULAR FOR SUNGLASSES|
    US15/012,241| US10088693B2|2015-02-02|2016-02-01|Ophthalmic lens, in particular for sunglasses|
    CN202010348399.8A| CN111812861A|2015-02-02|2016-02-02|Ophthalmic lens, in particular for sunglasses|
    CN201620256482.1U| CN205880407U|2015-02-02|2016-02-02|Ophthalmic lens|
    CN201610190477.XA| CN105842876A|2015-02-02|2016-02-02|Ophthalmic lens, in particular for sunglasses|
    PCT/EP2016/052104| WO2016124556A1|2015-02-02|2016-02-02|Ophthalmic lens, in particular for sunglasses|
    EP16703937.9A| EP3254153A1|2015-02-02|2016-02-02|Ophthalmic lens, in particular for sunglasses|
    US16/115,927| US10527869B2|2015-02-02|2018-08-29|Ophthalmic lens, in particular for sunglasses|
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