WO2016088763A1 - 眼鏡レンズおよび眼鏡 - Google Patents
眼鏡レンズおよび眼鏡 Download PDFInfo
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- WO2016088763A1 WO2016088763A1 PCT/JP2015/083783 JP2015083783W WO2016088763A1 WO 2016088763 A1 WO2016088763 A1 WO 2016088763A1 JP 2015083783 W JP2015083783 W JP 2015083783W WO 2016088763 A1 WO2016088763 A1 WO 2016088763A1
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- spectacle lens
- measured
- eye
- eyeball
- lens
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/104—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having spectral characteristics for purposes other than sun-protection
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
- G02B1/116—Multilayers including electrically conducting layers
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/26—Reflecting filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/107—Interference colour filters
Definitions
- the present invention relates to a spectacle lens and spectacles provided with the spectacle lens.
- blue light refers to light having a wavelength of 430 to 450 nm.
- Japanese Patent Application Laid-Open No. 2012-093689 or English Family Member US2013 / 222913A1 has a wavelength of 400 to 450 nm including the wavelength range of blue light.
- An optical article having a multilayer film having a property of reflecting light has been proposed.
- an object of the present invention is to provide a spectacle lens that can reduce the burden on the eyes caused by blue light and has a good wearing feeling.
- a spectacle lens including a lens base material, and a multilayer film respectively provided on an eyeball side surface and an object side surface of the lens base material,
- the average reflectance R B (object) in the wavelength range of 430 to 450 nm measured on the object side surface of the spectacle lens is 1.00% or more
- a spectacle lens whose average reflectance R UV280-380 nm (eye) in the wavelength range of 280 to 380 nm measured on the eyeball side surface of the spectacle lens is 15.00% or less; About.
- a spectacle lens including a lens base material, and a multilayer film respectively provided on an eyeball side surface and an object side surface of the lens base material,
- the average reflectance R B (object) in the wavelength range of 430 to 450 nm measured on the object side surface of the spectacle lens is 1.00% or more
- the spectacle lens has an average reflectance R B (object) in the wavelength region of 430 to 450 nm measured on the object side surface of 1.00% or more.
- R B average reflectance
- such reflection spectral characteristics are also referred to as “blue light reflectivity”.
- the spectacle lens has an average reflectance R UV280-380 nm (eye) in the wavelength range of 280 to 380 nm measured on the eyeball side surface of 15.00% or less, or 295 measured on the eyeball side surface.
- the average reflectance R UV295-380 nm ((eye) in the wavelength range of ⁇ 380 nm is 20.00% or less.
- R UV280-380 nm (eye) is 15.00%. Or less, and R UV295-380nm ((eye) is 20.00% or less, and both can be satisfied.
- R UV280-380nm (eye) is 15
- the reflection spectral characteristic satisfying at least one of 0.000 % or less and R UV295-380nm ((eye) of 20.00% or less ) is also referred to as “ultraviolet ray low reflectivity.”
- the wavelength of ultraviolet rays is not limited to the light incident on the object-side surface, but the light reflected from the back of the eyeglass wearer is reflected on the eyeball-side surface.
- the energy is more intense and the light is more likely to be scattered, which places a greater burden on the eye, so ultraviolet light, which has a shorter wavelength than blue light, imposes a greater burden on the eye than blue light. If such ultraviolet rays are incident on the eyeball side surface of the spectacle lens from the back of the spectacle wearer and much of the light is reflected, a lot of ultraviolet rays enter the eye of the spectacle wearer and put a heavy burden on the eye.
- the spectacle lens suppresses the reflection of ultraviolet rays on the eyeball side surface by suppressing the average reflectance in the wavelength range which is the wavelength range of ultraviolet rays within the above range on the eyeball side surface.
- the spectacle lens Since it is, it is possible to reduce the amount of ultraviolet light that is incident is reflected by the eyeball side surface to the eye. As described above, according to the spectacle lens, it is possible to suppress both the blue light incident on the spectacle lens from the front and the ultraviolet light incident from the rear from placing a burden on the eye.
- RB (object) is 2.00% or more and 10.00% or less.
- the average reflectance R B (eye) in the wavelength region of 430 to 450 nm measured on the eyeball side surface of the spectacle lens is 1.00% or more. That is, in one aspect, the spectacle lens has blue light reflectivity on the object side surface as well as on the object side surface. As described above, blue light reflectivity is also imparted to the eyeball side surface of the spectacle lens. The blue light that is incident on the object side surface of the spectacle lens and passes through the spectacle lens without being reflected by the object side surface is It is preferable in that the amount of blue light incident on the eye can be reduced by reflecting on the surface.
- the object side surface is also considered from the viewpoint of a spectacle lens having a good appearance with little color difference between the object side surface and the eyeball side surface. At the same time, it is preferable to impart blue light reflectivity to the eyeball side surface.
- RB (eye) is 2.00% or more and 10.00% or less.
- the maximum reflectance in the wavelength region of 380 to 500 nm measured on the eyeball side surface of the spectacle lens is in the wavelength region of 400 to 480 nm.
- the reflection spectrum obtained by measurement on the surface that reflects blue light but reflects a lot of ultraviolet light has a large reflectance from the wavelength range of blue light (430 to 450 nm) to the wavelength range of ultraviolet light (280 to 380 nm). Therefore, the maximum reflectance in the wavelength region of 380 nm to 500 nm tends to be the reflectance at the wavelength of 380 nm.
- the reflection spectrum obtained by the measurement on the surface having the low ultraviolet reflectivity as well as the blue light reflectivity has a maximum reflectance in the wavelength range of 380 to 500 nm, and the wavelength in the wavelength range of 400 to 480 nm.
- the reflectance can be
- the average reflectance in the wavelength region of 520 to 580 nm measured on the eyeball side surface of the spectacle lens and the average reflectance in the wavelength region of 520 to 580 nm measured on the object side surface are each 0.60% or less.
- the average reflectance in the wavelength region of 580 to 780 nm measured on the eyeball side surface of the spectacle lens and the average reflectance in the wavelength region of 580 to 780 nm measured on the object side surface are each 3.00% or less. It is.
- the wavelength range of 520 to 580 nm is a so-called green wavelength range.
- the wavelength range of 580 to 780 nm is a so-called red wavelength range.
- a surface having a high reflectance in the wavelength region of green light tends to be green, and a surface having a high reflectance in the wavelength region of red light tends to be reddish. Therefore, in a spectacle lens with blue light reflectivity on both sides, if the reflectance in the wavelength range of green light and red light is high on one surface and low on the other surface, Since green and red are added in addition to blue due to the blue light reflectivity, a great difference in color occurs between one surface and the other surface of the spectacle lens.
- the reflectance in both wavelength regions is reduced as described above on the eyeball side surface and the object side surface, respectively, so that the color of the eyeball side surface and the object side surface is reduced. The appearance can be improved with little difference.
- the dominant wavelength measured on the eyeball-side surface of the spectacle lens and the dominant wavelength measured on the object-side surface are each in the wavelength range of 400 to 500 nm.
- the main wavelength will be described later.
- the multilayer film provided on the eyeball side surface and the multilayer film provided on the object side surface are each a multilayer film in which a plurality of coatings each composed mainly of an inorganic material are laminated.
- the multilayer film includes at least one laminated structure in which a film mainly composed of silicon oxide and a film mainly composed of zirconium oxide are adjacent to each other.
- the multilayer film includes at least one laminated structure in which a film mainly composed of silicon oxide and a film mainly composed of niobium oxide are adjacent to each other.
- the multilayer film includes at least one film mainly composed of a conductive oxide.
- the coating is a vapor deposition film.
- the present invention relates to spectacles having the spectacle lens according to one aspect of the present invention and a frame to which the spectacle lens is attached.
- a spectacle lens having blue light reflectivity on the object side surface and low ultraviolet reflectivity on the eyeball side surface.
- the reflection spectrum obtained by the measurement on the eyeball side surface of the spectacle lens of Example 3 and Comparative Example 2. 6 is a reflection spectrum obtained by measurement on the eyeball side surface of the spectacle lens of Example 6.
- An eyeglass lens according to an aspect of the present invention is a spectacle lens including a lens base material, and multilayer films respectively provided on an eyeball side surface and an object side surface of the lens base material, the object side of the spectacle lens
- the average reflectance RB (object) in the wavelength range of 430 to 450 nm measured on the surface is 1.00% or more, and the average reflection in the wavelength range of 280 to 380 nm measured on the eyeball side surface of the spectacle lens.
- the rate R UV (eye) is a spectacle lens with a rate of 10.00% or less.
- the average reflectance in the present invention and the present specification is the arithmetic average value of the normal incidence reflectance measured at any wavelength (at any pitch) in the wavelength range of the measurement target at the optical center of the measurement target surface.
- the measurement wavelength interval (pitch) can be arbitrarily set, for example, in the range of 1 nm to 5 nm.
- the reflection spectral characteristics such as reflectance in the present invention and the present specification refer to normal incidence reflection spectral characteristics.
- the eyeball side surface means a surface arranged on the eyeball side when the spectacles equipped with the spectacle lens are worn by the wearer
- the object side surface means the object side. The surface to be placed.
- the spectacle lens has an average reflectance R B (object) in the wavelength region of 430 to 450 nm measured on the object side surface of 1.00% or more.
- the average reflectance R B (eye) in the wavelength range of 430 to 450 nm measured on the eyeball side surface is also 1.00% or more. That is, it has the property of reflecting incident light in the wavelength range of 430 to 450 nm (blue light reflectivity) on at least the object side surface, preferably the eyeball side surface and the object side surface.
- R B (object) and R B (eye) are each preferably 2.00% or more, more preferably 3.00% or more, and further preferably 4.00% or more.
- the higher the average reflectance the more the burden on the eye caused by blue light can be reduced.
- RB (object) and RB (eye) are preferable from the viewpoint of obtaining a spectacle lens exhibiting moderate bluishness. Is 10.00% or less, more preferably 9.00% or less, and still more preferably 8.00% or less.
- R B (object) and R B (eye) may be the same or different.
- R B (object) and R B (eye) have a blue light reflectivity on the eyeball side surface larger than that on the object side surface, and satisfy the relationship of R B (object) ⁇ R B (eye)
- the present invention is not limited to this.
- the average reflectance R UV280-380 nm (eye) in the wavelength region of 280 to 380 nm measured on the eyeball side surface is 15.00% or less.
- R UV280-380nm (eye) is preferably 14.00% or less, more preferably 13.50% or less, still more preferably 13.00% or less, further 12.00% or less, 11.00% or less, 10 It is preferable in the order of 0.000% or less, 9.00% or less, 8.00% or less, and 7.00% or less.
- the ultraviolet reflectivity has an average reflectance R UV295-380 nm (eye) in the wavelength range of 295 to 380 nm measured on the eyeball side surface of 20.00% or less.
- R UV295-380nm (eye) is preferably 18.00% or less, more preferably 15.00% or less, further preferably 12.00% or less, and further 11.00% or less, 10 It is preferable in the order of 0.000% or less, 9.00% or less, 8.00% or less, and 7.00% or less.
- R UV280-380nm (eye) and R UV295-380nm (eye) are, for example, 1.00% or more. However, the lower the value, the lower the amount of ultraviolet light that is reflected from the eyeball side surface and incident on the eye is preferable. Is not particularly limited.
- the average reflectance R UV280-380 nm (object) in the wavelength range of 280 to 380 nm measured on the object side surface is not particularly limited, and R UV280-380 nm It may be the same as (eye) , large or small.
- the lens base material includes an ultraviolet absorber
- the ultraviolet light incident from the object side surface is absorbed by the ultraviolet absorber of the lens base material, thereby reducing the amount of ultraviolet light incident on the eye. can do.
- the object-side surface may be given higher ultraviolet reflectivity than the eyeball-side surface, and R UV280-380 nm (object) > R UV280-380 nm (eye) may be satisfied .
- R UV280-380 nm (object) can be, for example, 16.00% or more, 18.00% or more, 0.00% or more, 25.00% or more, or 30.00% or more, although it may be 50.00% or less, it is not particularly limited.
- R UV280-380 nm (object) can be in the range described above for R UV280-380 nm (eye) .
- the average reflectance R UV295-380 nm (object) in the wavelength range of 295 to 380 nm measured on the object-side surface is not particularly limited, and R UV295-380 nm ( eye) may be the same, larger or smaller.
- the lens base material includes an ultraviolet absorber
- the ultraviolet light incident from the object side surface is absorbed by the ultraviolet absorber of the lens base material, thereby reducing the amount of ultraviolet light incident on the eye. can do.
- the object-side surface may be given higher ultraviolet reflectivity than the eyeball-side surface, and R UV295-380 nm (object) > R UV295-380 nm (eye) may be satisfied .
- R UV295-380 nm (object) can be, for example, 21.00% or more, 22.00% or more, 25.00% or more, or 30.00% or more, and 50.00% or less. Although there can be, it is not specifically limited.
- R UV295-380 nm (object) can be in the range described above for R UV295-380 nm (eye) .
- the average reflectance in the wavelength region of 580 to 780 nm measured on at least one of the eyeball side surface and the object side surface preferably both. However, it is preferably 3.00% or less, more preferably 2.00% or less, and even more preferably 1.50% or less.
- the average reflectance in the wavelength region of 580 to 780 nm is, for example, 0.50% or more. However, the lower the value, the better the redness can be reduced.
- the dominant wavelength is an index obtained by quantifying the wavelength of light color perceived by human eyes, and is calculated according to JIS Z 8701.
- the principal wavelength measured at least on the object side surface is in the wavelength range of 400 to 500 nm.
- the dominant wavelength measured on the eyeball side surface is more preferably in the wavelength range of 400 to 500 nm because the spectacle lens has a good appearance with little difference in color between the object side surface and the eyeball side surface.
- the present inventors speculate that a small difference in color between the object-side surface and the eyeball-side surface is preferable from the viewpoint of improving wearing feeling, in addition to improving the appearance of the spectacle lens. .
- Details are as follows. Reflected light that is reflected after being incident from behind the spectacle wearer and incident on the eye as reflected light passes through the spectacle lens without being reflected on the eyeball side surface in addition to the reflected light reflected on the eyeball side surface. After that, there is light that is reflected from the object-side surface, becomes return light, and exits from the eyeball-side surface and enters the eye. When the color of each reflected light (reflected image color) is greatly different, the spectacle wearer feels uncomfortable.
- both the object-side surface and the eyeball-side surface have blue light and green light.
- reflection spectral characteristics for at least one light selected from the group consisting of three kinds of light, red light, preferably two kinds of light, more preferably three kinds of light, respectively, are adjusted as described above. This is preferable from the viewpoint of further improving the feeling of wearing.
- the multilayer films respectively provided on the eyeball side surface and the object side surface of the lens base material can impart the reflection spectral characteristics to the spectacle lens.
- the multilayer film is provided directly or indirectly through one or more other layers on the surface of the lens substrate.
- the lens substrate is not particularly limited, but styrene resins including (meth) acrylic resins, polycarbonate resins, allyl resins, allyl carbonate resins such as diethylene glycol bisallyl carbonate resin (CR-39), vinyl resins, polyester resins, Polyether resins, urethane resins obtained by reacting isocyanate compounds with hydroxy compounds such as diethylene glycol, thiourethane resins obtained by reacting isocyanate compounds with polythiol compounds, and having one or more disulfide bonds in the molecule (thio) Examples thereof include a transparent resin obtained by curing a polymerizable composition containing an epoxy compound. Inorganic glass can also be used.
- the unstained thing may be used, and the dyed thing (stained lens) may be used.
- the refractive index of the lens substrate is, for example, about 1.60 to 1.75. However, the refractive index of the lens substrate is not limited to this, and may be within the above range or vertically away from the above range.
- the spectacle lens may be various lenses such as a single focus lens, a multifocal lens, and a progressive power lens.
- the type of lens is determined by the surface shape of both surfaces of the lens substrate.
- the lens substrate surface may be a convex surface, a concave surface, or a flat surface.
- the object-side surface is convex and the eyeball-side surface is concave.
- the present invention is not limited to this.
- the multilayer film for imparting the above-described reflection spectral characteristics may be provided directly on the surface of the lens substrate, or may be provided indirectly via one or more other layers.
- the layer that can be formed between the lens substrate and the multilayer film include a hard coat layer (hereinafter also referred to as “hard coat”).
- hard coat layer By providing the hard coat layer, the spectacle lens can be provided with scratch resistance (abrasion resistance), and the durability (strength) of the spectacle lens can be increased.
- the hard coat layer reference can be made to, for example, paragraphs 0025 to 0028 and 0030 of JP2012-128135A.
- the primer layer reference can be made to, for example, paragraphs 0029 to 0030 of JP2012-128135A.
- the multilayer film provided on the eyeball side surface and the object side surface of the lens substrate is not particularly limited as long as the reflection spectral characteristics described above can be imparted to the spectacle lens surface having these multilayer films.
- Such a multilayer film can be preferably formed by sequentially laminating a high refractive index layer and a low refractive index layer. More specifically, based on the refractive index of the film material for forming the high refractive index layer and the low refractive index layer, and the wavelength of the light to be reflected or the light to be reduced, each layer is optically simulated by a known method.
- the multilayer film can be formed by sequentially laminating the high refractive index layer and the low refractive index layer under the film forming conditions determined to be the determined film thickness.
- the film forming material may be an inorganic material, an organic material, or an organic-inorganic composite material, and an inorganic material is preferable from the viewpoint of film forming and availability. By adjusting the kind of film forming material, the film thickness, the stacking order, etc., it is possible to control the reflection spectral characteristics with respect to each of blue light, ultraviolet light, green light, and red light.
- Examples of the high refractive index material for forming the high refractive index layer include zirconium oxide (for example, ZrO 2 ), tantalum oxide (Ta 2 O 5 ), titanium oxide (for example, TiO 2 ), and aluminum oxide (Al 2 One or more oxides selected from the group consisting of O 3 ), yttrium oxide (eg, Y 2 O 3 ), hafnium oxide (eg, HfO 2 ), and niobium oxide (eg, Nb 2 O 5 ). Mention may be made of mixtures.
- the low refractive index material for forming the low refractive index layer is an oxide selected from the group consisting of silicon oxide (eg, SiO 2 ), magnesium fluoride (eg, MgF 2 ), and barium fluoride (eg, BaF 2 ). Or a mixture of two or more kinds of fluorides or fluorides.
- oxides and fluorides are shown in stoichiometric composition, but those having oxygen deficient or excessive oxygen or fluorine in the stoichiometric composition are also used for high refractive index materials or low refractive index. It can be used as a material.
- the film thickness of each layer included in the multilayer film can be determined by optical simulation.
- the layer configuration of the multilayer film for example, from the lens substrate side toward the lens outermost surface side, First layer (low refractive index layer) / second layer (high refractive index layer) / third layer (low refractive index layer) / fourth layer (high refractive index layer) / fifth layer (low refractive index layer) / A structure in which the sixth layer (high refractive index layer) / seventh layer (low refractive index layer) are laminated in this order; First layer (high refractive index layer) / second layer (low refractive index layer) / third layer (high refractive index layer) / fourth layer (low refractive index layer) / fifth layer (high refractive index layer) / A configuration in which the sixth layer (low refractive index layer) is laminated in that order; Etc.
- each of the above layers is a film mainly composed of the above-described high refractive index material or low refractive index material.
- the main component is a component that occupies the most in the coating film, and is usually a component that occupies about 50% by mass to 100% by mass, and further about 90% by mass to 100% by mass.
- Such a film can be formed by performing film formation using a film formation material (for example, an evaporation source) containing the above material as a main component.
- the main components related to the film forming material are the same as described above.
- the coating film and the film forming material may contain a small amount of impurities that are inevitably mixed, and assist other components such as other inorganic substances and film formation as long as the function of the main component is not impaired.
- a known additive component that plays a role may be included.
- the film formation can be performed by a known film formation method, and it is preferably performed by vapor deposition from the viewpoint of easiness of film formation.
- the vapor deposition in the present invention includes a dry method such as a vacuum vapor deposition method, an ion plating method, and a sputtering method.
- a dry method such as a vacuum vapor deposition method, an ion plating method, and a sputtering method.
- an ion beam assist method in which an ion beam is simultaneously irradiated during deposition may be used.
- the above multilayer film is formed by vapor deposition using a coating mainly composed of a conductive oxide, preferably a deposition source mainly composed of a conductive oxide.
- a conductive oxide is generally known as a transparent conductive oxide such as indium oxide, tin oxide, zinc oxide, titanium oxide, and composite oxides thereof from the viewpoint of the transparency of the spectacle lens. It is preferable to use various conductive oxides. Particularly preferable conductive oxides from the viewpoints of transparency and conductivity include tin oxide and indium-tin oxide (ITO).
- a further functional film on the multilayer film.
- a functional film examples include various functional films such as a water-repellent or hydrophilic antifouling film, an antifogging film, a polarizing film, and a light control film.
- functional films any known technique can be applied without any limitation.
- the further aspect of this invention can also provide the spectacles which have the spectacle lens concerning one aspect
- the spectacle lens is as detailed above. There is no restriction
- the refractive index is a refractive index at a wavelength of 500 nm.
- Examples 1 to 3 Comparative Examples 1 and 2
- the object side surface is convex and the eyeball side surface is concave.
- a total of 8 multilayer deposited films were sequentially formed on the hard coat surface by ion-assisted deposition using oxygen gas and nitrogen gas as assist gases.
- those having a refractive index of 1.60 are trade names EYAS manufactured by HOYA Corporation, and those having a refractive index of 1.67 are trade names EYNOA manufactured by HOYA Corporation.
- the multilayer vapor deposition film is a first layer using the vapor deposition source shown in Table 1 from the lens substrate side (hard coat side) toward the spectacle lens surface, The layers were laminated in the order of the second layer, so that the outermost layer on the spectacle lens surface side was the eighth layer.
- a vapor deposition source made of the following oxide was used except for impurities that could inevitably be mixed.
- reflection spectral characteristics were controlled by changing the film thickness of one or more of the following layers.
- Comparative Examples 1 and 2 multilayer deposited films having the same configuration were formed on the object side surface and the eyeball side surface.
- the multilayer vapor deposition film produced in Comparative Example 1 was formed on the object side surface, and a different multilayer vapor deposition film was formed on the eyeball side surface.
- Example 3 the multilayer deposited film produced in Comparative Example 2 was formed on the object side surface, and a multilayer deposited film different from this was formed on the eyeball side surface.
- ⁇ Evaluation method> 1 Measurement of reflection spectral characteristics At the optical center of the object side surface (convex surface side) and eyeball side surface (concave surface side) of the spectacle lenses of Examples 1 to 3 and Comparative Examples 1 and 2, using a spectrophotometer U4100 manufactured by Hitachi, Ltd. Direct incidence reflection spectral characteristics in a wavelength range of 280 to 780 nm were measured (measurement pitch: 1 nm). In order to suppress reflection from the non-measuring surface, the non-measuring surface was painted in black with no gloss as described in Section 5.2 of JIS T 7334.
- FIG. 1 shows reflection spectral spectra obtained by measurement on the eyeball side surfaces of the eyeglass lenses of Examples 1 and 2 and Comparative Example 1.
- FIG. 1 shows reflection spectral spectra obtained by measurement on the eyeball side surfaces of the eyeglass lenses of Examples 1 and 2 and Comparative Example 1.
- Example 2 shows the reflection spectrum obtained by the measurement on the eyeball side surface of the spectacle lens of Example 3 and Comparative Example 2. From the measurement results, various reflection spectral characteristics shown in Tables 2 and 3 were obtained. The dominant wavelengths shown in Tables 2 and 3 were calculated from the measurement results in accordance with JIS Z 8701.
- the eyeglass lenses of Comparative Examples 1 and 2 are eyeglass lenses in which the average reflectance R UV (eye) in the wavelength region of 280 to 380 nm measured on the eyeball side surface exceeds 10.00%. Such a spectacle lens is likely to cause eye strain or eye pain when worn for a long time due to the large amount of ultraviolet light that enters from behind the spectacle wearer, reflects off the eyeball side surface, and enters the eye.
- the spectacle lenses of Examples 1 to 3 are spectacle lenses having blue light reflectivity on the object side surface and low ultraviolet reflectivity on the eyeball side surface. Further, the eyeglass lenses of Examples 1 and 3 have blue light reflectivity as well as low ultraviolet reflectivity on the eyeball side surface.
- the spectacle lens of Example 2 is a spectacle lens that does not have blue light reflectivity on the eyeball side surface. According to such a spectacle lens, it is possible to suppress both the blue light incident on the spectacle lens from the front and the ultraviolet light incident from the rear from placing a burden on the eye. Further, as shown in Tables 2 and 3, it was confirmed that in the spectacle lenses of Examples 1 and 3, the generation of reflected double images was suppressed as compared with the spectacle lens of Example 2. When the appearance was observed, the eyeglass lens of Example 2 was bluish on the object side surface and green on the eyeball side surface. In contrast, the eyeglass lenses of Examples 1 and 3 were bluish on both the object-side surface and the eyeball-side surface, and the appearance was good with little difference in color between the two surfaces.
- Examples 4 to 6, Comparative Example 3 On the convex side (object side) of a plastic lens substrate (see Tables 4-7, colorless lens) with both surfaces optically finished and hard-coated in advance, the object side surface is convex and the eyeball side surface is concave. Using oxygen gas and nitrogen gas as the assist gas, a total of 8 layers in Examples 4 and 5 and Comparative Example 3 and a total of 7 layers in Example 6 were laminated on the hard coat surface by ion-assisted deposition. .
- the lens substrates shown in Tables 4 to 7 have a refractive index of 1.60 and are trade names EYAS manufactured by HOYA Corporation, and those having a refractive index of 1.67 are trade names EYNOA manufactured by HOYA Corporation. Further, each lens base material was formed with a hard coat (HC) having a refractive index shown in Tables 4 to 7 on both sides with a film thickness shown in Tables 4 to 7. On the concave side (eyeball side) hard coat surface under the same conditions, a total of 8 layers in Example 4, 5 and Comparative Example 3 and 7 layers in Example 6 were laminated by ion-assisted deposition. I got a spectacle lens.
- HC hard coat
- the multilayer vapor deposition film uses vapor deposition sources shown in Tables 4 to 7 from the lens substrate side (hard coat side) toward the spectacle lens surface.
- the layers were laminated in the order of the first layer, the second layer, and so on, so that the eighth layer was the outermost layer on the spectacle lens surface side in Examples 4 and 5 and Comparative Example 3, and the seventh layer in Example 6.
- a vapor deposition source composed of an oxide shown in Table 3 was used except for impurities that could inevitably be mixed, and a vapor deposition film having a film thickness shown in Tables 4 to 7 was used.
- a multilayer deposited film was obtained sequentially.
- ⁇ Evaluation method> 1 Measurement of reflection spectral characteristics 280 using the spectrophotometer U4100 manufactured by Hitachi, Ltd. at the optical center of the object side surface (convex surface side) and the eyeball side surface (concave surface side) of the spectacle lenses of Examples 4 to 6 and Comparative Example 3.
- the direct incidence reflection spectral characteristics in the wavelength range of ⁇ 780 nm were measured (measurement pitch: 1 nm).
- the non-measuring surface was painted in black with no gloss as described in Section 5.2 of JIS T 7334.
- Various reflection spectral characteristics shown in Table 8 were obtained from the reflection spectrum obtained by the measurement.
- the dominant wavelength shown in Table 8 was calculated from the measurement results in accordance with JIS Z 8701.
- FIG. 3 shows a reflection spectrum obtained by measurement on the eyeball side surface of the spectacle lens of Example 6.
- the average reflectance R UV280-380 nm (eye) in the wavelength region of 280 to 380 nm measured on the eyeball side surface exceeds 15.00%, and 295 to 380 nm measured on the eyeball side surface.
- Such a spectacle lens is likely to cause eye strain or eye pain when worn for a long time due to the large amount of ultraviolet light that enters from behind the spectacle wearer, reflects off the eyeball side surface, and enters the eye.
- the spectacle lenses of Examples 4 to 6 are spectacle lenses having blue light reflectivity on the object side surface and low ultraviolet reflectivity on the eyeball side surface.
- the spectacle lens of Examples 4 to 6 the reflection double image (difference in reflected image color) was evaluated in the same manner as in the evaluations of Examples 1 to 3 and Comparative Examples 1 and 2, and both were evaluated. The result was A.
- the present invention is useful in the field of manufacturing eyeglass lenses and eyeglasses.
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Abstract
Description
レンズ基材と、このレンズ基材の眼球側表面および物体側表面にそれぞれ設けられた多層膜と、を含む眼鏡レンズであって、
眼鏡レンズの物体側表面において測定される430~450nmの波長域における平均反射率RB(object)は1.00%以上であり、かつ、
眼鏡レンズの眼球側表面において測定される280~380nmの波長域における平均反射率RUV280-380nm(eye)は15.00%以下である眼鏡レンズ、
に関する。
レンズ基材と、このレンズ基材の眼球側表面および物体側表面にそれぞれ設けられた多層膜と、を含む眼鏡レンズであって、
眼鏡レンズの物体側表面において測定される430~450nmの波長域における平均反射率RB(object)は1.00%以上であり、かつ、
眼鏡レンズの眼球側表面において測定される295~380nmの波長域における平均反射率RUV295-380nm( (eye)は20.00%以下である眼鏡レンズ、
に関する。
上記眼鏡レンズは、物体側表面において測定される430~450nmの波長域における平均反射率RB(object)が、1.00%以上である。以下、かかる反射分光特性を、「青色光反射性」とも記載する。眼鏡レンズの物体側表面において青色光反射性を有することにより、LED液晶モニター等のデジタル機器のモニター画面から発光される青色光が眼鏡装用者の眼に入射する光量を低減することができるため、デジタル機器を長時間使用する際に生じる眼精疲労や眼の痛みを効果的に低減することが可能となる。
更に、上記眼鏡レンズは、眼球側表面において測定される280~380nmの波長域における平均反射率RUV280-380nm(eye)が15.00%以下であるか、または眼球側表面において測定される295~380nmの波長域における平均反射率RUV295-380nm( (eye)が20.00%以下である。なお本発明の一態様にかかる眼鏡レンズは、RUV280-380nm(eye)が15.00%以下であること、およびRUV295-380nm( (eye)が20.00%以下であることの少なくとも一方を満たすものであり、両方を満たすこともできる。以下、RUV280-380nm(eye)が15.00%以下であること、およびRUV295-380nm( (eye)が20.00%以下であることの少なくとも一方を満たす反射分光特性を、「紫外線低反射性」とも記載する。280~380nmおよび295~380nmの波長域とは、紫外線の波長域である。眼鏡装用者の眼に入射する光は物体側表面から入射する光に限られず、眼鏡装用者の後方から入射した光が眼球側表面で反射した反射光が眼に入射することもある。光は波長が短いほどエネルギーが強く散乱しやすいため眼に大きな負担をかける。したがって、青色光よりも短波長光である紫外線は、青色光よりも眼にかける負担は大きい。そのような紫外線が、眼鏡装用者の後方から眼鏡レンズの眼球側表面に入射し多くが反射されてしまっては、眼鏡装用者の眼に多くの紫外線が入射して眼に大きな負担をかけてしまう。これに対し、上記眼鏡レンズは、紫外線の波長域である上記波長域における平均反射率を眼球側表面において上記範囲内に抑えることにより、眼球側表面における紫外線の反射を抑制することができるため、眼球側表面で反射されて眼に入射する紫外線量を低減することができる。
以上の通り、上記眼鏡レンズによれば、眼鏡レンズに前方から入射する青色光および後方から入射する紫外線の両方が、眼に負担をかけることを抑制することが可能となる。
520~580nmの波長域とは、いわゆる緑色光の波長域である。また、580~780nmの波長域とは、いわゆる赤色光の波長域である。緑色光の波長域での反射率が高い表面は緑色を呈する傾向があり、赤色光の波長域での反射率が高い表面は赤みを帯びる傾向がある。したがって、両面に青色光反射性を付与した眼鏡レンズにおいて、緑色光、赤色光の波長域での反射率が、一方の表面では高く、他方の表面では低い場合には、反射率の高い表面では青色光反射性を付与したことによる青みに加えて緑色や赤みが加わるため、眼鏡レンズの一方の表面と他方の表面とで色みに大きな違いが生じてしまう。これに対し、上記眼鏡レンズでは、一態様において、これら両波長域における反射率を、眼球側表面および物体側表面でそれぞれ上記のように低減することにより、眼球側表面と物体側表面の色みの違いが少なく外観を良好にすることができる。
本発明の一態様にかかる眼鏡レンズは、レンズ基材と、このレンズ基材の眼球側表面および物体側表面にそれぞれ設けられた多層膜と、を含む眼鏡レンズであって、眼鏡レンズの物体側表面において測定される430~450nmの波長域における平均反射率RB(object)は1.00%以上であり、かつ、眼鏡レンズの眼球側表面において測定される280~380nmの波長域における平均反射率RUV(eye)は10.00%以下である眼鏡レンズである。
以下に、上記眼鏡レンズについて、更に詳細に説明する。なお本発明および本明細書における平均反射率とは、測定対象表面の光学中心において、測定対象の波長域において任意の波長毎に(任意のピッチで)測定された直入射反射率の算術平均値をいう。測定にあたり、測定波長間隔(ピッチ)は、例えば1nm~5nmの範囲で、任意に設定可能である。また、本発明および本明細書における反射率等の反射分光特性は、直入射反射分光特性をいうものとする。また、本発明および本明細書において、眼球側表面とは、眼鏡レンズを備えた眼鏡が装用者に装用された際に眼球側に配置される面をいい、物体側表面とは、物体側に配置される面をいう。
(青色光に対する反射分光特性)
上記眼鏡レンズは、物体側表面において測定される430~450nmの波長域における平均反射率RB(object)が、1.00%以上である。また、好ましくは、眼球側表面において測定される430~450nmの波長域における平均反射率RB(eye)も、1.00%以上である。即ち、少なくとも物体側表面に、好ましくは眼球側表面および物体側表面にそれぞれ、430~450nmの波長域の入射光を反射する性質(青色光反射性)を有する。RB(object)、RB(eye)は、それぞれ、好ましくは2.00%以上であり、より好ましくは3.00%以上であり、更に好ましくは4.00%以上である。上記平均反射率が高いほど、青色光による眼への負担を低減することができる。一方、上記平均反射率が高いほど眼鏡レンズの青みが強くなる傾向があるため、適度な青みを呈した眼鏡レンズを得る観点からは、RB(object)、RB(eye)は、それぞれ好ましくは10.00%以下であり、より好ましくは9.00%以下であり、更に好ましくは8.00%以下である。
紫外線反射性に関して、一態様では、眼球側表面において測定される280~380nmの波長域における平均反射率RUV280-380nm(eye)は、15.00%以下である。RUV280-380nm(eye)は、好ましくは14.00%以下、より好ましくは13.50%以下、更に好ましくは13.00%以下、更には12.00%以下、11.00%以下、10.00%以下、9.00%以下、8.00%以下、7.00%以下の順に好ましい。
また、紫外線反射性は、一態様では、眼球側表面において測定される295~380nmの波長域における平均反射率RUV295-380nm(eye)は、20.00%以下である。RUV295-380nm(eye)は、好ましくは18.00%以下であり、より好ましくは15.00%以下であり、更に好ましくは12.00%以下であり、更には11.00%以下、10.00%以下、9.00%以下、8.00%以下、7.00%以下の順に好ましい。
また、RUV280-380nm(eye)およびRUV295-380nm(eye)は、例えば1.00%以上であるが、低いほど眼球側表面において反射し眼に入射する紫外線量が少なくなり好ましいため下限値は特に限定されるものではない。
520~580nmの緑色光の波長域の入射光を反射する性質については、眼球側表面、物体側表面の少なくとも一方、好ましくは両方において測定される、520~580nmの波長域における平均反射率が、0.60%以下であることが好ましく、0.50%以下であることがより好ましい。また、520~580nmの波長域における平均反射率は、例えば0.10%以上であるが、低いほど緑色の色みを低減でき好ましいため、下限値は限定されるものではない。
また、580~780nmの赤色光の波長域の入射光を反射する性質については、眼球側表面、物体側表面の少なくとも一方、好ましくは両方において測定される、580~780nmの波長域における平均反射率が、3.00%以下であることが好ましく、2.00%以下であることがより好まく、1.50%以下であることが更に好ましい。また、580~780nmの波長域における平均反射率は、例えば0.50%以上であるが、低いほど赤みを低減でき好ましいため、下限値は限定されるものではない。
主波長とは、人の眼で感じる光の色の波長を数値化した指標であり、JIS Z 8701にしたがって算出される。上記の本発明の一態様にかかる眼鏡レンズは、少なくとも物体側表面において測定される主波長が、400~500nmの波長域にあることが、青色光反射性の観点から好ましい。更に、眼球側表面において測定される主波長も、400~500nmの波長域にあると、物体側表面、眼球側表面で色みの違いが少なく外観が良好な眼鏡レンズとなるため、より好ましい。
眼鏡装用者の後方から入射した後に反射されて反射光として眼に入射する反射光には、眼球側表面で反射された反射光に加えて、眼球側表面で反射されずに眼鏡レンズ内を通過した後に物体側表面で反射され戻り光となり眼球側表面から出射し眼に入射する光がある。それぞれの反射光の色み(反射像色)が大きく違うと、眼鏡装用者は違和感を感じてしまう。以下において、このような異なる反射像色が観察されることを、反射二重像と記載する。したがって、違和感を低減することにより装用感を更に向上するためには、物体側表面と眼球側表面との色みの違いは小さいことが好ましい。物体側表面と眼球側表面の青色光~可視光領域の光に対する反射分光特性の違いは、反射像色の違いをもたらすため、物体側表面と眼球側表面の両表面において、青色光、緑色光および赤色光の3種の光からなる群から選択される少なくとも1種の光、好ましくは2種の光、より好ましくは3種の光に対する反射分光特性を、それぞれ先に記載したように調整することは、装用感の更なる向上の観点から好ましい。
上記眼鏡レンズにおいて、レンズ基材の眼球側表面および物体側表面にそれぞれ設けられた多層膜は、眼鏡レンズに上記の反射分光特性を付与することができる。上記多層膜は、レンズ基材の表面上に、直接または一層以上の他の層を介して間接的に設けられる。レンズ基材は、特に限定されないが、(メタ)アクリル樹脂をはじめとするスチレン樹脂、ポリカーボネート樹脂、アリル樹脂、ジエチレングリコールビスアリルカーボネート樹脂(CR-39)等のアリルカーボネート樹脂、ビニル樹脂、ポリエステル樹脂、ポリエーテル樹脂、イソシアネート化合物とジエチレングリコールなどのヒドロキシ化合物との反応で得られたウレタン樹脂、イソシアネート化合物とポリチオール化合物とを反応させたチオウレタン樹脂、分子内に1つ以上のジスルフィド結合を有する(チオ)エポキシ化合物を含有する重合性組成物を硬化して得られる透明樹脂等を挙げることができる。また、無機ガラスも使用可能である。なおレンズ基材としては、染色されていないもの(無色レンズ)を用いてもよく、染色されているもの(染色レンズ)を用いてもよい。レンズ基材の屈折率は、例えば、1.60~1.75程度である。ただしレンズ基材の屈折率は、これに限定されるものではなく、上記の範囲内でも、上記の範囲から上下に離れていてもよい。
第一層(低屈折率層)/第二層(高屈折率層)/第三層(低屈折率層)/第四層(高屈折率層)/第五層(低屈折率層)/第六層(高屈折率層)/第七層(低屈折率層)の順に積層された構成;
第一層(高屈折率層)/第二層(低屈折率層)/第三層(高屈折率層)/第四層(低屈折率層)/第五層(高屈折率層)/第六層(低屈折率層)の順に積層された構成、
等を挙げることができる。好ましい低屈折率層と高屈折率層の組み合わせの一例としては、ケイ素酸化物を主成分とする被膜とジルコニウム酸化物を主成分とする被膜との組み合わせ、ケイ素酸化物を主成分とする被膜とニオブ酸化物を主成分とする被膜との組み合わせを挙げることができ、これら二層の被膜が隣接する積層構造を少なくとも1つ含む多層膜を、多層膜の好ましい一例として例示することができる。
本発明の更なる態様は、上記の本発明の一態様にかかる眼鏡レンズと、この眼鏡レンズを取り付けたフレームとを有する眼鏡を提供することもできる。眼鏡レンズについては、先に詳述した通りである。その他の眼鏡の構成については、特に制限はなく、公知技術を適用することができる。
両面が光学的に仕上げられ予めハードコートが施された、物体側表面が凸面、眼球側表面が凹面であるプラスチックレンズ基材(表2、3参照、無色レンズ)の凸面側(物体側)のハードコート表面に、アシストガスとして酸素ガスおよび窒素ガスを用いて、イオンアシスト蒸着により合計8層の多層蒸着膜を順次形成した。表2、3に示すレンズ基材は、屈折率1.60のものはHOYA株式会社製商品名EYAS、屈折率1.67のものはHOYA株式会社製商品名EYNOAである。
凹面側(眼球側)のハードコート表面にも同様の条件でイオンアシスト蒸着により合計8層の多層蒸着膜を積層して眼鏡レンズを得た。
各実施例、比較例では、凸面側、凹面側とも、多層蒸着膜は、レンズ基材側(ハードコート側)から眼鏡レンズ表面に向かって、表1に示す蒸着源を用いて第1層、第2層…の順に積層し、眼鏡レンズ表面側最外層が第8層となるように形成した。各実施例、比較例では、不可避的に混入する可能性のある不純物を除けば下記酸化物からなる蒸着源を使用した。各実施例、比較例において、下記層の1層以上の膜厚を変えることにより、反射分光特性を制御した。
比較例1、2では、物体側表面および眼球側表面に同じ構成の多層蒸着膜を形成した。
一方、実施例1、2では、物体側表面には比較例1で作製した多層蒸着膜を形成し、これとは異なる多層蒸着膜を眼球側表面に形成した。
実施例3では、物体側表面には比較例2で作製した多層蒸着膜を形成し、これとは異なる多層蒸着膜を眼球側表面に形成した。
1.反射分光特性の測定
実施例1~3、比較例1、2の眼鏡レンズの物体側表面(凸面側)、眼球側表面(凹面側)の光学中心において、日立製作所製分光光度計U4100を用いて、280~780nmの波長域における直入射反射分光特性を測定した(測定ピッチ:1nm)。非測定面からの反射を抑えるため、JIS T 7334の5.2節の通り、非測定面は光沢のない黒色で塗装した。図1に、実施例1、2、比較例1の眼鏡レンズの眼球側表面における測定により得られた反射分光スペクトルを示す。図2に、実施例3、比較例2の眼鏡レンズの眼球側表面における測定により得られた反射分光スペクトルを示す。測定結果から、表2、3に示す各種反射分光特性を求めた。表2、3に示す主波長は、測定結果からJIS Z 8701に従い算出した。
実施例1~3、比較例1、2の眼鏡レンズを、暗室において蛍光灯下30cmの位置で眼球側から観察し、反射二重像の発生の有無・程度を観察者の目により、以下の評価基準に基づき官能評価した。
A:反射二重像が観察されないか、ほとんど観察されない。
B:反射二重像が観察される(Aより重度)。
C:反射二重像が顕著に観察される。
実施例1~3の眼鏡レンズは、いずれも物体側表面において青色光反射性を有し、眼球側表面において紫外線低反射性を有する眼鏡レンズである。更に実施例1、3の眼鏡レンズは、眼球側表面において、紫外線低反射性とともに青色光反射性を有する。これに対し、実施例2の眼鏡レンズは、眼球側表面には青色光反射性を有さない眼鏡レンズである。かかる眼鏡レンズによれば、眼鏡レンズに前方から入射する青色光および後方から入射する紫外線の両方が、眼に負担をかけることを抑制することができる。
また、表2、3に示すように、実施例1、3の眼鏡レンズでは、実施例2の眼鏡レンズと比べて反射二重像の発生が抑制されていることが確認された。また、外観観察すると、実施例2の眼鏡レンズは、物体側表面は青みを帯び眼球側表面は緑色を呈していた。これに対し、実施例1、3の眼鏡レンズは、物体側表面、眼球側表面とも青みを呈しており、両表面での色みの違いが少なく外観が良好であった。
両面が光学的に仕上げられ予めハードコートが施された、物体側表面が凸面、眼球側表面が凹面であるプラスチックレンズ基材(表4~7参照、無色レンズ)の凸面側(物体側)のハードコート表面に、アシストガスとして酸素ガスおよび窒素ガスを用いて、実施例4、5および比較例3では合計8層、実施例6では合計7層の多層蒸着膜を、イオンアシスト蒸着により積層した。表4~7に示すレンズ基材は、屈折率1.60のものはHOYA株式会社製商品名EYAS、屈折率1.67のものはHOYA株式会社製商品名EYNOAである。また、各レンズ基材には、表4~7に示す屈折率のハードコート(HC)が表4~7に示す膜厚で、両面にそれぞれ形成されていた。
凹面側(眼球側)のハードコート表面にも同様の条件で、実施例4、5および比較例3では合計8層、実施例6では合計7層の多層蒸着膜を、イオンアシスト蒸着により積層して眼鏡レンズを得た。
実施例4~6、比較例3では、凸面側、凹面側とも、多層蒸着膜は、レンズ基材側(ハードコート側)から眼鏡レンズ表面に向かって、表4~7に示す蒸着源を用いて第1層、第2層…の順に積層し、実施例4、5および比較例3では第8層が、実施例6では第7層が眼鏡レンズ表面側最外層となるように形成した。実施例4~6、比較例3では、不可避的に混入する可能性のある不純物を除けば表3に示す酸化物からなる蒸着源を使用し、表4~7に示す膜厚の蒸着膜を順次形成し多層蒸着膜を得た。
1.反射分光特性の測定
実施例4~6、比較例3の眼鏡レンズの物体側表面(凸面側)、眼球側表面(凹面側)の光学中心において、日立製作所製分光光度計U4100を用いて、280~780nmの波長域における直入射反射分光特性を測定した(測定ピッチ:1nm)。非測定面からの反射を抑えるため、JIS T 7334の5.2節の通り、非測定面は光沢のない黒色で塗装した。測定により得られた反射分光スペクトルから、表8に示す各種反射分光特性を求めた。表8に示す主波長は、測定結果からJIS Z 8701に従い算出した。図3に、実施例6の眼鏡レンズの眼球側表面における測定により得られた反射分光スペクトルを示す。
実施例4~6の眼鏡レンズは、いずれも物体側表面において青色光反射性を有し、眼球側表面において紫外線低反射性を有する眼鏡レンズである。かかる眼鏡レンズによれば、眼鏡レンズに前方から入射する青色光および後方から入射する紫外線の両方が、眼に負担をかけることを抑制することができる。
また、実施例4~6の眼鏡レンズについて、実施例1~3、比較例1、2の評価と同様の方法で反射二重像(反射像色の違い)評価を行ったところ、いずれも評価結果は、Aであった。
Claims (13)
- レンズ基材と、該レンズ基材の眼球側表面および物体側表面にそれぞれ設けられた多層膜と、を含む眼鏡レンズであって、
眼鏡レンズの物体側表面において測定される430~450nmの波長域における平均反射率RB(object)は1.00%以上であり、かつ、
眼鏡レンズの眼球側表面において測定される280~380nmの波長域における平均反射率RUV(eye)は15.00%以下である眼鏡レンズ。 - RB(object)は、2.00%以上10.00%以下である請求項1に記載の眼鏡レンズ。
- 眼鏡レンズの眼球側表面において測定される430~450nmの波長域における平均反射率RB(eye)は、1.00%以上である請求項1または2に記載の眼鏡レンズ。
- RB(eye)は、2.00%以上10.00%以下である請求項3に記載の眼鏡レンズ。
- 眼鏡レンズの眼球側表面において測定される380~500nmの波長域における反射率の最大値は、400~480nmの波長域にある請求項3または4に記載の眼鏡レンズ。
- 眼鏡レンズの眼球側表面において測定される520~580nmの波長域における平均反射率および物体側表面において測定される520~580nmの波長域における平均反射率は、それぞれ0.60%以下であり、かつ
眼鏡レンズの眼球側表面において測定される580~780nmの波長域における平均反射率および物体側表面において測定される580~780nmの波長域における平均反射率は、それぞれ3.00%以下である請求項3~5のいずれか1項に記載の眼鏡レンズ。 - 眼鏡レンズの眼球側表面において測定される主波長および物体側表面において測定される主波長は、それぞれ400~500nmの波長域にある請求項1~6のいずれか1項に記載の眼鏡レンズ。
- 前記眼球側表面に設けられた多層膜および物体側表面に設けられた多層膜は、それぞれ無機材料を主成分とする被膜が複数積層された多層膜である請求項1~7のいずれか1項に記載の眼鏡レンズ。
- 前記多層膜は、ケイ素酸化物を主成分とする被膜とジルコニウム酸化物を主成分とする被膜とが隣接する積層構造を少なくとも1つ含む請求項8に記載の眼鏡レンズ。
- 前記多層膜は、ケイ素酸化物を主成分とする被膜とニオブ酸化物を主成分とする被膜とが隣接する積層構造を少なくとも1つ含む請求項8に記載の眼鏡レンズ。
- 前記多層膜は、導電性酸化物を主成分とする被膜を少なくとも一層含む請求項8~10のいずれか1項に記載の眼鏡レンズ。
- 前記被膜は、蒸着膜である請求項8~11のいずれか1項に記載の眼鏡レンズ。
- 請求項1~12のいずれか1項に記載の眼鏡レンズと、該眼鏡レンズを取り付けたフレームと、を有する眼鏡。
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JP7136907B2 (ja) | 2018-09-28 | 2022-09-13 | ホヤ レンズ タイランド リミテッド | 眼鏡レンズ |
JP7136908B2 (ja) | 2018-09-28 | 2022-09-13 | ホヤ レンズ タイランド リミテッド | 眼鏡レンズ |
KR20210054577A (ko) * | 2018-09-28 | 2021-05-13 | 호야 렌즈 타일랜드 리미티드 | 안경 렌즈 |
CN112840264B (zh) * | 2018-09-28 | 2023-03-14 | 豪雅镜片泰国有限公司 | 眼镜镜片 |
KR102542694B1 (ko) * | 2018-09-28 | 2023-06-13 | 호야 렌즈 타일랜드 리미티드 | 안경 렌즈 |
WO2020067409A1 (ja) * | 2018-09-28 | 2020-04-02 | ホヤ レンズ タイランド リミテッド | 眼鏡レンズ |
KR102582202B1 (ko) * | 2018-09-28 | 2023-09-22 | 호야 렌즈 타일랜드 리미티드 | 안경 렌즈 |
CN112840262B (zh) * | 2018-09-28 | 2023-11-14 | 豪雅镜片泰国有限公司 | 眼镜镜片 |
US11835800B2 (en) | 2018-09-28 | 2023-12-05 | Hoya Lens Thailand Ltd. | Spectacle lens |
WO2020067408A1 (ja) * | 2018-09-28 | 2020-04-02 | ホヤ レンズ タイランド リミテッド | 眼鏡レンズ |
Also Published As
Publication number | Publication date |
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AU2015356057A1 (en) | 2017-06-29 |
KR20170080630A (ko) | 2017-07-10 |
CN107003545A (zh) | 2017-08-01 |
EP3229060B1 (en) | 2023-08-16 |
JPWO2016088763A1 (ja) | 2017-09-14 |
CA2969346C (en) | 2021-03-23 |
CN107003545B (zh) | 2020-03-24 |
JP6530765B2 (ja) | 2019-06-12 |
CA2969346A1 (en) | 2016-06-09 |
AU2018264041B2 (en) | 2019-07-04 |
EP3229060A1 (en) | 2017-10-11 |
KR102326114B9 (ko) | 2023-06-26 |
US10690944B2 (en) | 2020-06-23 |
KR20190039621A (ko) | 2019-04-12 |
AU2015356057B2 (en) | 2018-08-16 |
US20170299896A1 (en) | 2017-10-19 |
AU2018264041A1 (en) | 2018-12-06 |
EP3229060A4 (en) | 2018-07-18 |
KR102326114B1 (ko) | 2021-11-15 |
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