Spectacle lens and spectacles

Abstract

To provide a colored spectacle lens capable of obtaining a neutral visual field close to the naked eye or a colorless lens, and to provide spectacles equipped with the spectacle lens.SOLUTION: The spectacle lens 1 includes a colored base material 2 and a multilayer film 4 directly or indirectly arranged on a film arrangement surface F of the base material 2. In the substrate 2 on which the multilayer film 4 is disposed, the difference between the maximum transmissivity and the minimum transmissivity in a specific wave range of 430nm or more and 630nm or less is 5 points or less. Δ Ea * b * in the L * a * b * color system measurement relating to the color difference between the color of the substrate 2 on which the multilayer film 4 is not disposed and the color of the substrate 2 on which the multilayer film 4 is disposed is 10 or less.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to spectacle lenses and spectacles. [Background technology]

[0002] A known example of a dyed plastic lens for spectacles is that described in Japanese Patent Laid-Open Publication No. 7-168142 (Patent Document 1). This lens has a dyed plastic lens substrate, an impact absorbing layer disposed on the eyepiece side of the substrate, a scratch-resistant layer (i.e., a hard coat layer and an anti-reflection layer) disposed in that order on the impact absorbing layer, and a hard coat layer and an anti-reflection layer disposed in that order on the object side of the plastic lens substrate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-168142 Summary of the Invention [Problem to be solved by the invention]

[0004] When a user wears a conventional tinted lens, the field of view is tinted by the object being viewed through the tinted plastic lens substrate. For example, the field of view for a blue tinted lens is tinted blue. The field of view for a red tinted lens is tinted red. The field of view for a yellow tinted lens is tinted yellow. Furthermore, as an anti-reflection layer for eyeglass lenses, even conventional dyed lenses, regardless of color, have a "W"-shaped reflectance distribution in the visible range with a maximum value around 520 nm (nanometers). When a dyed lens with such an anti-reflection layer is viewed from the anti-reflection layer side, a pale green reflected light can be observed. Therefore, even if a conventional tinted lens has an anti-reflection layer, the field of view is tinted with the same color as the plastic lens substrate.

[0005] A primary object of the present invention is to provide a tinted spectacle lens that provides a neutral field of vision similar to that of the naked eye or a colorless lens, and spectacles equipped with the spectacle lens. [Means for solving the problem]

[0006] This specification discloses a spectacle lens. This spectacle lens may comprise a colored substrate and a multilayer film disposed directly or indirectly on the film-disposed surface of the substrate. The difference between the maximum and minimum transmittance values ​​in a specific wavelength range of 430 nm to 630 nm in the substrate on which the multilayer film is disposed may be 5 points or less. The L * a * b * ΔEa in color system measurement * b * may be 10 or less. This specification also discloses a spectacle lens. This spectacle lens may include a colored substrate and a multilayer film disposed directly or indirectly on the film-mounting surface of the substrate. The difference between the maximum and minimum transmittance values ​​in a specific wavelength range for a substrate on which no multilayer film is disposed may exceed 5 points. The difference between the maximum and minimum transmittance values ​​in a specific wavelength range for a substrate on which a multilayer film is disposed may be 5 points or less. The present specification further discloses eyeglasses, which may include the above-described eyeglass lenses. [Effects of the Invention]

[0007] A main effect of the present invention is to provide a tinted spectacle lens that provides a neutral field of vision similar to that of the naked eye or a colorless lens, and spectacles equipped with the spectacle lens. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic cross-sectional view of a spectacle lens according to the present invention. [Figure 2]1 is a graph showing (a*, b*) for the color of each base material in Examples 1 to 8. [Figure 3] 1 is a graph showing the spectral transmittance distribution in the visible range for each of the substrates in Examples 1 to 8. [Figure 4] 1 is a graph showing the spectral reflectance distribution in the visible range for each of the multilayer films of Examples 1 to 4 and GreenAR. [Figure 5] 1 is a graph showing the spectral reflectance distribution in the visible range for each of the multilayer films of Examples 5 to 8 and GreenAR. [Figure 6] 1 is a graph showing the spectral transmittance distribution in the visible range in Example 1 and Comparative Example 1. [Figure 7] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 2 and Comparative Example 2. [Figure 8] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 3 and Comparative Example 3. [Figure 9] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 4 and Comparative Example 4. [Figure 10] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 5 and Comparative Example 5. [Figure 11] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 6 and Comparative Example 6. [Figure 12] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 7 and Comparative Example 7. [Figure 13] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 8 and Comparative Example 8. [Figure 14] 1 is a graph showing (a*, b*) for the colors of Examples 1 to 4 and Comparative Examples 1 to 4. [Figure 15] 1 is a graph showing (a*, b*) for the colors of Examples 5 to 8 and Comparative Examples 5 to 8. [Figure 16] Photographs taken from the object side of Example 1 (right) and Comparative Example 1 (left). [Figure 17] Photographs taken from the object side of Example 2 (right) and Comparative Example 2 (left). [Figure 18]Photographs taken from the object side of Example 3 (right) and Comparative Example 3 (left). [Figure 19] 1 is a graph showing the spectral reflectance distribution in the visible range for each of the multilayer films of Examples 9 and 10. [Figure 20] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 9 and Comparative Example 1. [Figure 21] 10 is a graph showing the spectral transmittance distribution in the visible range in Example 10 and Comparative Example 2. [Figure 22] 1 is a graph showing (a*, b*) for the colors of Examples 9-10 and Comparative Examples 1-2. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, examples of embodiments of the present invention will be described with reference to the accompanying drawings. The form is not limited to the following example.

[0010] FIG. 1 is a schematic cross-sectional view of a spectacle lens 1 according to the present invention. The spectacle lens 1 according to the present invention has a substrate 2 , a hard coat film 3 , a multilayer film 4 , and an antifouling film 5 . The antifouling film 5 may be omitted or may be treated as a component of the multilayer film 4.

[0011] The substrate 2 is a plastic lens substrate made of plastic and has light-transmitting properties. The material of the substrate 2 is preferably a thermosetting resin, such as a polyurethane resin, a thiourethane resin, a urethane-urea resin, an episulfide resin, a polycarbonate resin, a polyester resin, an acrylic resin, a polyethersulfone resin, a poly-4-methylpentene-1 resin, a diethylene glycol bisallyl carbonate resin, or a combination thereof. The substrate 2 is preferably plate-shaped. The plate-shaped substrate 2 is also called a substrate. The substrate 2 is a spectacle lens substrate. The spectacle lens substrate may or may not have a prescription. The spectacle lens substrate may be curved convexly toward the object side, may be flat, or may be curved convexly toward the eyeball side.

[0012] The substrate 2 is produced, for example, as follows. That is, first, a substrate base is formed by synthesis from monomers, and the substrate base can be used as an untinted eyeglass lens. The substrate base is then dyed to the desired color by immersion in a dye liquor containing one or more dyes according to the desired color. The dye liquor may further contain at least one of a dispersant and a surfactant. The dye liquor may be heated to 30°C or higher. The dyed substrate base is then preferably subjected to an annealing treatment to promote fixation of the dye into the substrate base. The base material 2 may be colored by a method other than dyeing.

[0013] The spectral transmittance distribution in the visible range of the colored substrate 2 is often not flat. Therefore, the field of view of light transmitted only through the substrate 2 is not neutral compared to the field of view without a lens or the field of view with a colorless, transparent lens. The visible range here is 380 nm or more and 780 nm or less. Note that the visible range may be outside the above range. For example, the lower limit of the visible range may be 390 nm, 400 nm, 410 nm, or 420 nm. Furthermore, the upper limit of the visible range may be 800 nm, 760 nm, 740 nm, or 700 nm. Considering the sensitivity of the complex in the human eye, it can be said that the flatness of the transmittance distribution for a neutral field of view is sufficient if it is obtained in the wavelength range of 430 nm or more and 630 nm or less in the visible range. The complexes include S complexes, M complexes, and L complexes. The maximum value of the wavelength sensitivity distribution of S complexes is located in the wavelength range of 430 nm to 450 nm. The maximum value of the sensitivity distribution of M complexes is located in the wavelength range of 530 nm to 540 nm. The maximum value of the sensitivity distribution of L complexes is located in the wavelength range of 560 nm to 580 nm. Therefore, if a flat transmittance distribution can be obtained in the wavelength range of 430 nm or more and 580 nm or less, to which the maximum sensitivities of the S complex, M complex, and L complex may belong, this can contribute to the realization of a neutral field of view, and if a flat transmittance distribution can be obtained in the wavelength range of 430 nm or more and 630 nm or less, with some leeway on the longer wavelength side, this can sufficiently contribute to the realization of a neutral field of view. Hereinafter, the wavelength range of 430 nm or more and 630 nm or less may be referred to as a specific wavelength range. Furthermore, in many cases, the colored substrate 2 does not achieve flatness in transmittance even in a specific wavelength range. For example, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range for the colored substrate 2 exceeds a predetermined point. The predetermined point is, for example, 5 points. The predetermined point may be 10 points, 8 points, 6 points, 4 points, 3 points, 2 points, or 1 point.

[0014] The multilayer film 4 is provided on one or more surfaces of the substrate 2. The multilayer film 4 is an optical multilayer film. The multilayer film 4 has a transmitted light adjusting function that adjusts transmitted light. Furthermore, the multilayer film 4 preferably has an anti-reflection function. The surface of the substrate 2 inside the multilayer film 4 is the film-mounting surface F. When a plurality of multilayer films 4 are provided, it is preferable that opposing surfaces of the plate-shaped substrate 2 are provided as the respective film-mounting surfaces F. It is also possible that the multilayer film 4 is provided on the film-mounting surface F of the plate-shaped substrate 2, and another type of film is provided on the surface opposite to the film-mounting surface F. The other type of film may be, for example, a coating film that suppresses at least one of scratches and cracks. The multilayer film 4 is indirectly provided on the film-mounting surface F via the hard coat film 3. The multilayer film 4 may be formed directly on the film-mounting surface F, or may be formed via another type of film instead of or together with the hard coat film 3. When a plurality of multilayer films 4 are provided, the type of hard coat film 3 added on each film-mounting surface F of the substrate 2 may be different from each other, or the presence or absence of a hard coat film 3 may be different from each other. Whether the multilayer film 4 is provided directly or indirectly on the film-mounting surface F, it is disposed above the film-mounting surface F, i.e., on the atmospheric side.

[0015] The hard coat film 3 is preferably formed by uniformly applying a hard coat liquid to the surface of the substrate 2 . Furthermore, organosiloxane-based resins containing inorganic oxide microparticles can be preferably used as the material for the hard coat film 3. In this case, the hard coat solution is preferably prepared by dispersing (mixing) a solute mainly composed of an organosiloxane-based resin and an inorganic oxide microparticle sol in a water or alcohol-based solvent. The organosiloxane-based resin is preferably obtained by hydrolyzing and condensing an alkoxysilane. Specific examples of organosiloxane-based resins include γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, methyltrimethoxysilane, ethyl silicate, or combinations thereof. These alkoxysilane hydrolysis condensates are produced by hydrolyzing the alkoxysilane compound or a combination thereof in an acidic aqueous solution such as hydrochloric acid. Specific examples of inorganic oxide fine particles include sols of zinc oxide, silicon dioxide (silica fine particles), aluminum oxide, titanium oxide (titania fine particles), zirconium oxide (zirconia fine particles), tin oxide, beryllium oxide, antimony oxide, tungsten oxide, and cerium oxide, either singly or in combination. The diameter of the inorganic oxide fine particles is preferably 1 nm to 100 nm, more preferably 1 nm to 50 nm, from the viewpoint of ensuring the transparency of the hard coat film 3. Furthermore, the amount (concentration) of the inorganic oxide fine particles is preferably 40 wt % to 60 wt % (mass percent) of the total components of the hard coat film 3, from the viewpoint of ensuring an appropriate level of at least one of hardness and toughness in the hard coat film 3. Additionally, at least one of acetylacetone metal salt and ethylenediaminetetraacetic acid metal salt may be added to the hard coat liquid as a curing catalyst. Furthermore, surfactants, colorants, solvents, etc. may be added to the hard coat liquid as needed to ensure at least one of adhesion to the substrate 2 and ease of formation. The physical thickness of the hard coat film 3 is preferably 0.5 μm (micrometers) or more and 4.0 μm or less, and more preferably 1.0 μm or more and 3.0 μm or less. The lower limit of this thickness range is determined because it is difficult to obtain sufficient hardness if the film is thinner than this. On the other hand, the upper limit is determined because if the film is thicker than this, the possibility of problems related to physical properties, such as the occurrence of cracks or brittleness, increases dramatically. Furthermore, in order to improve the adhesion of the hard coat film 3, a primer film may be added between the hard coat film 3 and the film placement surface F. Examples of materials for the primer film include polyurethane resins, acrylic resins, methacrylic resins, organosilicon resins, and combinations thereof. The primer film is preferably formed by uniformly applying a primer liquid to the surface of the substrate 2. The primer liquid is preferably a liquid obtained by mixing the above-mentioned resin material and inorganic oxide fine particles in a water or alcohol-based solvent.

[0016] The multilayer film 4 includes one or more low refractive index layers 6 and one or more high refractive index layers 8 .

[0017] From the viewpoint of obtaining good transmitted light adjusting performance and antireflection performance, it is preferable to arrange a plurality of low refractive index layers 6 and a plurality of high refractive index layers 8 alternately. Preferably, a total of five or more low refractive index layers 6 and high refractive index layers 8 are provided, and more preferably, a total of seven or more low refractive index layers 6 and high refractive index layers 8 are provided. In Fig. 1, the first layer in the multilayer film 4, which is the layer closest to the substrate 2, is the low refractive index layer 6. Also in Fig. 1, the adjacent layer in the multilayer film 4, which is adjacent to the antifouling film 5 on the substrate 2 side, is the low refractive index layer 6. The total number of low refractive index layers 6 and high refractive index layers 8 in the multilayer film 4 in Fig. 1 is an odd number (5). The configuration of the multilayer film 4 is not limited to that of the multilayer film 4 shown in Fig. 1. For example, the first layer of the multilayer film 4 may be a high refractive index layer 8. Furthermore, the adjacent layer on the substrate 2 side of the antifouling film 5 may be a high refractive index layer 8. The total number of low refractive index layers 6 and high refractive index layers 8 may be four or less, or may be six or more.

[0018] The low refractive index layer 6 is preferably formed by vapor deposition of a low refractive index vapor deposition material. The low refractive index layer 6 is made of a low refractive index material. The low refractive index layer 6 is preferably made of a dielectric material. Examples of the low refractive index material include at least one of silicon oxide (particularly SiO2) and magnesium fluoride (particularly MgF2). The low refractive index material may be a mixture or composite of two or more materials, such as a mixture of SiO2 and Al2O3. The high refractive index layer 8 is preferably formed by vapor deposition of a high refractive index vapor deposition material. The high refractive index layer 6 is made of a high refractive index material. The high refractive index layer 8 is preferably made of a dielectric material. Examples of high refractive index materials include at least one of zirconium oxide (particularly ZrO2), titanium oxide (particularly TiO2), tantalum oxide (particularly Ta2O5), and niobium oxide (particularly Nb2O5). The refractive index of the high refractive index layer 8 is, for example, 1.8 or higher. The high refractive index material may be a mixture or composite of two or more materials. The deposition is preferably performed by vacuum deposition. Alternatively, deposition may be performed with the assistance of ions such as oxygen ions and / or argon ions, or while performing plasma treatment. At least one of the low refractive index layer 6 and the high refractive index layer 8 may be formed by a method other than deposition, such as sputtering.

[0019] The antifouling film 5 is disposed on the multilayer film 4, i.e., on the atmospheric side of the multilayer film 4. The antifouling film 5 imparts an antifouling function to the spectacle lens 1. The antifouling function includes at least one of a water-repellent function and an oil-repellent function. The antifouling film 5 is preferably a single-layer film having a total of one layer, but the antifouling film 5 may also be a multi-layer film having a plurality of layers. The antifouling film 5 is formed by a known method such as vapor deposition or ion sputtering.

[0020] The anti-fouling film 5 is formed by polycondensation of, for example, an organosilicon compound. Polycondensation makes it possible to increase the thickness and density of the coating, thereby improving adhesion to adjacent layers in the multilayer film 4 and increasing surface hardness. Therefore, the anti-fouling film 5 exhibits oil repellency in addition to water repellency. Furthermore, the anti-fouling film 5 is easily formed into a coating that is easy to wipe off dirt. The organosilicon compound before polycondensation is preferably -SiR y X 3-y (R is a monovalent organic group, X is a hydrolyzable group, and y is an integer of 0 to 2). Here, X is, for example, an alkoxy group such as -OCH3 or -OCH2CH3, an acyloxy group such as -OCOCH3, or -ON=CR a R b ketoxime groups (R a ,R b each represents a monovalent organic group), halogen groups such as -Cl and -Br, and -NR c R d Amino groups such as (R c ,R d represents a monovalent organic group). As such an organosilicon compound, a fluorine-containing organosilicon compound is suitable. Fluorine-containing organosilicon compounds are comprehensively excellent in water and oil repellency, electrical insulation, mold releasability, solvent resistance, lubricity, heat resistance, and antifoaming properties. In particular, organosilicon compounds with a relatively large molecular weight of about 1,000 to 50,000 and containing a perfluoroalkyl group or perfluoropolyether group in the molecule have excellent antifouling properties.

[0021] At least one of the hard coat film 3 and the antifouling film 5 is preferably colorless and transparent so as not to impair the transmitted light adjusting function of the multilayer film 4 as much as possible. In addition, when at least one of the hard coat film 3 and the antifouling film 5 is colored rather than being colorless and transparent, the transmitted light adjusting function of the multilayer film 4 may be adjusted to a color obtained by combining the color of at least one of the hard coat film 3 and the antifouling film 5 with the color of the substrate 2. In other words, the multilayer film 4 may have a function of adjusting the transmitted light of at least one of the hard coat film 3 and the antifouling film 5 and the substrate 2.

[0022] The function of adjusting transmitted light in the multilayer film 4 is achieved by the design of the multilayer film 4 . For example, a predetermined starting design for the multilayer film 4 is selected, and the physical or optical thickness of one or more layers of the multilayer film 4 according to this starting design is increased or decreased to provide a transmitted light adjusting function. The starting design is selected, for example, from a standard design for general eyeglass lenses, that is, a design in which the reflectance distribution in the visible range is "W"-shaped and has a maximum value around 520 nm (GreenAR). Hereinafter, a multilayer film according to the GreenAR design may also be referred to as GreenAR. More specifically, the transmitted light adjusting function is a function of adjusting the reflectance distribution of visible light transmitted through the multilayer film 4 and the colored substrate 2 in the multilayer film 4 so that it becomes flat over part or all of the visible range. For example, for a blue substrate 2, the reflectance in the blue range of the multilayer film 4 is increased relative to the reflectance in the blue range in the initial design, and the transmitted light of the multilayer film 4 is adjusted to be attenuated in the blue range compared to other wavelength ranges. By such adjustment, the attenuation in the blue range of the transmitted light of the multilayer film 4 is relatively compensated for by the transmission of the blue substrate 2, and the transmittance distribution of the transmitted light of the substrate 2 and the multilayer film 4 becomes flat. Furthermore, for the red substrate 2, the reflectance in the red region of the multilayer film 4 is increased relative to the reflectance in the red region in the initial design, and the light transmitted through the multilayer film 4 is adjusted to be attenuated in the red region compared to other wavelength regions. With this adjustment, the attenuation in the red region of the light transmitted through the multilayer film 4 is relatively compensated for by the transmission through the red substrate 2, and the transmittance distribution of the light transmitted through the substrate 2 and the multilayer film 4 becomes flat. Furthermore, for the purple substrate 2, the reflectance of the multilayer film 4 in the blue and red regions is increased relative to the reflectance of the blue and red regions in the initial design, and the reflectance of the green region is reduced compared to that in the initial design, so that the light transmitted through the multilayer film 4 is attenuated in the blue and red regions compared to other wavelength regions. With such adjustments, the attenuation in the blue and red regions of the light transmitted through the multilayer film 4 is relatively compensated for by the transmission through the purple substrate 2, resulting in a flat transmittance distribution of the light transmitted through the substrate 2 and the multilayer film 4. Note that the initial design for the purple substrate 2 may be other than GreenAR, such as a "U"-shaped design in which the reflectance distribution has a minimum value in the green region.

[0023] As described above, it is sufficient for the flatness of the transmittance distribution to provide a neutral field of view to be obtained in the wavelength range of 430 nm or more and 630 nm or less. Furthermore, the flatness of the transmittance distribution for a neutral field of view in the substrate 2 with the multilayer film 4, i.e., the spectacle lens 1, can be obtained if the difference between the maximum and minimum transmittance values ​​in the wavelength range of interest is equal to or less than a predetermined point. For example, flatness of the transmittance distribution can be achieved if the difference between the maximum and minimum transmittance values ​​in a specific wavelength range in the spectacle lens 1 is 5 points or less, which contributes to the realization of a neutral field of view. Here, the difference between the maximum and minimum transmittance values ​​may be 10 points or less, 8 points or less, 6 points or less, 4 points or less, 3 points or less, 2 points or less, or 1 point or less.

[0024] Furthermore, if the absolute value of the YI value of the spectacle lens 1 including the substrate 2 and the multilayer film 4 is within a predetermined value, the spectacle lens 1 provides a neutral field of view. The YI value is defined in JIS K 7373:2006. The YI value is expressed by the following formula (1) using X, Y, and Z, which are the tristimulus values ​​of a sample in auxiliary illuminant C according to the XYZ color system. YI=100(1.2769X-1.059Z) / Y (1) A negative YI value indicates a stronger blueness, a positive value indicates a stronger yellowness, and the magnitude of the positive value indicates the degree of yellowness (yellowness), while the magnitude of the positive value indicates the degree of blueness (blueness). The XYZ color system has been adopted as the standard color system by the CIE (International Commission on Illumination) and is based on the three primary colors of light: red, green, and blue, or their additive mixtures. Colorimeters for calculating stimulus values ​​X, Y, and Z in the XYZ color system are well known, and the stimulus values ​​X, Y, and Z can be calculated by multiplying the spectral energy of the light being measured by the color matching functions for each of the stimulus values ​​X, Y, and Z for each wavelength and integrating the results over all wavelengths in the visible range. If the absolute value of the YI value of the spectacle lens 1 is within a predetermined value, the spectacle lens 1 will have a weak yellowish and bluish tint, and will be achromatic gray or colorless and transparent. Considering that the YI value of a typical eyeglass lens with a colorless and transparent substrate coated with GreenAR is about 2.2, the specified value here may be 2.2, or it may be 3 or 4, which are slightly larger than this value, or it may be 1.5 or 1, which are larger than this value.

[0025] Furthermore, if the color of the substrate 2 differs too much from the color of the substrate 2 after the multilayer film 4 is applied, i.e., the color of the eyeglass lens 1, discomfort in the field of view is more likely to occur. Therefore, from the viewpoint of suppressing the occurrence of discomfort in the field of view, it is preferable that the color difference between the color of the substrate 2 and the color of the eyeglass lens 1 is equal to or less than a predetermined value. The color difference is, for example, L * a * b * ΔEa in color system measurement * b * L * a * b * Colorimetric measurements are specified in JIS Z 8781-4:2013, which is based on CIE1976. ΔEa * b * is expressed by the following equations (2) to (5): * a * b * Color in the color system is (L1 * ,a1 * ,b1 * ) In addition, L of the substrate 2 * a * b * Color in the color system is (L0 * ,a0 * ,b0 * ) ΔEa * b * =√{(ΔL * ) 2 +(Δa * ) 2 +(Δb * ) 2} (2) ΔL * =L1 * -L0 * (3) Δa * =a1 * -a0 * (4) Δb * =b1 * -b0 * (5) Preferably, the predetermined value here is 12, 10, or 8.

[0026] On the other hand, the luminous reflectance of the multilayer film 4 for a 2° field of view under a D65 light source is preferably 2% or less, more preferably 1.5% or less, and even more preferably 1% or less, from the viewpoint of obtaining sufficient anti-reflection performance while also obtaining the transmitted light adjustment function. The luminous reflectance is specified in JIS T 7334:2011. JIS T 7334:2011 is based on ISO 8980-4:2006. Furthermore, from the viewpoint of obtaining sufficient visibility, the luminous transmittance of the substrate 2 for a 2° field of view under a D65 light source is preferably 70% or more, more preferably 75% or more, and even more preferably 80% or more. The luminous transmittance is specified in JIS T 7333:2018. JIS T 7333:2018 is based on ISO 8980-3:2013. The smaller the luminous transmittance of the substrate 2, the darker the color of the substrate 2 becomes. Therefore, in order to obtain a flat spectral transmittance in the spectacle lens 1, it becomes necessary to increase the reflectance of the multilayer film 4, and thus the luminous reflectance. In order to obtain a flat spectral transmittance while suppressing the luminous reflectance and obtaining sufficient visibility, it is preferable that the luminous transmittance of the substrate 2 be equal to or greater than a predetermined threshold value.

[0027] The multilayer film 4 can impart optical functions and optical characteristics to the eyeglass lens 1. For example, the optical function is at least one of a transmitted light adjustment function and an anti-reflection function. Also, for example, the optical characteristic is at least one of a transmitted light adjustment characteristic and an anti-reflection characteristic. Furthermore, the antifouling film 5 provides the spectacle lens 1 with antifouling function and properties.

[0028] The eyeglasses made using the eyeglass lens 1 have the same functions as the eyeglass lens 1. [Example]

[0029] Examples of the present invention and comparative examples not belonging to the present invention are shown below. The following examples are not intended to limit the scope of the present invention. Depending on how the present invention is interpreted, some of the following examples may essentially be comparative examples, or some of the following comparative examples may essentially be examples.

[0030] [Examples 1 to 8 and Comparative Examples 1 to 8] Each of the substrates 2 in Examples 1 to 8 and Comparative Examples 1 to 8 was formed by dyeing a substrate base with a dye. The substrates 2 in Examples 1 to 8 were colored in the following colors: navy, wine red, violet, pink, gray, green, blue, and orange, respectively. The differences in color of each substrate 2 are caused by the differences in the color of the dye, and further, when multiple dyes are used, by the blending of the dyes. Similarly to Examples 1 to 8, each of the substrates 2 in Comparative Examples 1 to 8 was colored in the following colors: navy, wine red, violet, pink, gray, green, blue, and orange, respectively. Each of the substrate bases in Examples 1 to 8 and Comparative Examples 1 to 8 is made of a thiourethane resin with a refractive index of 1.60. The diopter of each of the substrate bases in Examples 1 to 8 is S-0.00. The center thickness of each of the substrate bases in Examples 1 to 8 is 1.9 mm (millimeters). The dyeing of each substrate base in Examples 1 to 8 and Comparative Examples 1 to 8 is carried out as follows. First, a mixture of dye, dispersant, and surfactant according to the color is prepared. Next, the mixture is heated to 95°C. The substrate base is then immersed in the mixture. The immersion time is determined to be the time required for the color to appear at a predetermined concentration. After that, the immersed substrate base is placed in an environment at 130°C for one hour, whereby the immersed substrate base is subjected to an annealing treatment. The annealing treatment fixes the dye to the substrate base, forming substrate 2.

[0031] The following Table 1 shows the measured L for each substrate 2. * a * b * L in color space (CIE1976) * ,a * ,b * The values ​​shown are the YI value, the luminous transmittance (%) for a 2° visual field under a D65 light source, and the difference between the maximum and minimum transmittance values ​​in a specific wavelength range of 430 nm or more and 630 nm or less. In addition, in FIG. 2, the color of each base material 2 (a * ,b * ) A graph of points in the plane is shown. Furthermore, FIG. 3 shows a graph of the measured spectral transmittance distribution in the visible range of each substrate 2. The difference between the maximum and minimum transmittance in a specific wavelength range for each base material 2 alone exceeds 5 points, except for green.

[0032] [Table 1]

[0033] The above-described hard coat film 3 was formed on both sides of the substrate 2 in each of Examples 1 to 8 and Comparative Examples 1 to 8. More specifically, the hard coat film 3 of Examples 1 to 8 and Comparative Examples 1 to 8 was formed as follows. Specifically, 206 g (grams) of methanol, 300 g of methanol-dispersed titania sol (manufactured by JGC Catalysts and Chemicals Co., Ltd., solids content 30%), 60 g of γ-glycidoxypropyltrimethoxysilane, 30 g of γ-glycidoxypropylmethyldiethoxysilane, and 60 g of tetraethoxysilane were dropped into a reaction vessel. A 0.01 N aqueous hydrochloric acid solution was then dropped into the mixture, and the mixture was stirred to allow hydrolysis. Next, 0.5 g of a flow control agent and 1.0 g of a catalyst were added to the mixture, and the mixture was stirred at room temperature (approximately 28°C) for 3 hours to form a hard coat solution. This hard coat solution was applied to both sides of a substrate 2 and heat-cured at 120°C for 1.5 hours to form a hard coat film 3 with a refractive index of 1.60 and a thickness of 2.0 μm. Such a hard coat film 3 is colorless and transparent.

[0034] In Examples 1 to 8, a multilayer film 4 having a total of five or six layers and having the film structure shown in Table 2 below was formed on each hard coat film 3. In Comparative Examples 1 to 8, a multilayer film having a total of five layers related to GreenAR and having the film structure shown in Table 2 below is formed on each hard coat film 3. In Comparative Examples 1 to 8, the same multilayer film is formed. The film-disposed surface F in Examples 1 to 8 and Comparative Examples 1 to 8 is both surfaces of the substrate 2. In consideration of the time when the spectacle lens 1 is worn, both surfaces of the substrate 2 can be said to be the object-side surface and the eyeball-side surface. The object-side surface can also be said to be the air-side surface. Furthermore, when the spectacle lens 1 is a convex lens, both surfaces of the substrate 2 can be said to be the convex surface and the concave surface. The low refractive index layers 6, ie, SiO2 layers, of Examples 1 to 8 and Comparative Examples 1 to 8 were deposited using SiO2 as a deposition material. Furthermore, the high refractive index layers 8, ie, ZrO2 layers, of Examples 1 to 8 and Comparative Examples 1 to 8 are deposited by vapor deposition using ZrO2 as a deposition material. The multilayer films 4 of Examples 2, 5, and 7 have a total of six layers, and all have a ZrO2 layer as the first layer. The other multilayer films 4 have a total of five layers, and all have a SiO2 layer as the first layer.

[0035] [Table 2]

[0036] Table 3 below shows the measured luminous reflectance (%) of each of the multilayer films 4 of Examples 1 to 8 and Comparative Examples 1 to 8 in GreenAR under a 2° visual field with a D65 light source. Figure 4 shows a graph illustrating the measured spectral reflectance distributions in the visible range for the multilayer films 4 and GreenAR of Examples 1 to 4. Figure 5 shows a graph illustrating the measured spectral reflectance distributions in the visible range for the multilayer films 4 and GreenAR of Examples 5 to 8. The spectral reflectance distribution of GreenAR is plotted in both Figures 4 and 5 for reference.

[0037] [Table 3]

[0038] The following Table 4 shows the measured L values ​​for the eyeglass lenses 1 of Examples 1 to 8 and the eyeglass lenses of Comparative Examples 1 to 8. * a * b * L in color space (CIE1976) *,a * ,b * Each value, YI value, luminous transmittance (%) of D65 light source 2° field of view, difference between maximum and minimum transmittance in a specific wavelength range, and color difference ΔEa before and after forming each multilayer film 4 * b * is shown. 6 to 13 show graphs of the spectral transmittance distribution in the visible range measured in the order of Example 1 and Comparative Example 1, Example 2 and Comparative Example 2, Example 3 and Comparative Example 3, Example 4 and Comparative Example 4, Example 5 and Comparative Example 5, Example 6 and Comparative Example 6, Example 7 and Comparative Example 7, and Example 8 and Comparative Example 8. Furthermore, in FIG. 14, the color (a * ,b * 15 shows a graph of points on the (a) plane of the colors of Examples 5 to 8 and Comparative Examples 5 to 8. * ,b * ) A graph of points in the plane is shown.

[0039] [Table 4]

[0040] Regarding Example 1 and Comparative Example 1, which are related to the base material 2 dyed navy, in Comparative Example 1, green GreenAR is disposed on both sides of the navy base material 2, so the color difference ΔEa * b * is 10.773, which is greater than 10. Color difference ΔEa * b * The larger the YI, the greater the degree of change from light passing through the GreenAR on the object side to light passing through the substrate 2, and the greater the degree of change from light passing through the substrate 2 to light passing through the GreenAR on the eyeball side. Furthermore, in Comparative Example 1, the absolute value of the YI value was 2.82, exceeding 2.2. Furthermore, in Comparative Example 1, the difference between the maximum and minimum transmittance values ​​in a specific wavelength range was 7.95, exceeding 5. In contrast, in Example 1, the color difference ΔEa before and after the formation of each multilayer film 4 * b *is 9.215, which is less than 10. Therefore, the degree of change from light transmitted through the object-side multilayer film 4 to light transmitted through the substrate 2 is relatively small, and the degree of change from light transmitted through the substrate 2 to light transmitted through the eyeball-side multilayer film 4 is relatively small, resulting in more stable transmitted light in the eyeglass lens 1. Furthermore, in Example 1, the absolute value of the YI value is 0.83, which is less than 2.2. Therefore, a level of yellowness and blueness equivalent to or greater than that of a colorless, transparent substrate with GreenAR is obtained. Furthermore, in Example 1, the difference between the maximum and minimum transmittance in a specific wavelength range for the substrate 2 alone is 6.75 points, which is more than 5 points. However, when the multilayer film 4 is further added to form the eyeglass lens 1, the difference between the maximum and minimum transmittance in the specific wavelength range is 4.60 points, which is less than 5 points. Therefore, the eyeglass lens 1 with the navy-dyed substrate 2 provides a neutral field of view closer to that of the naked eye or a colorless lens. FIG. 16 shows photographs taken from the object side of Example 1 and Comparative Example 1. The eyeglass lens 1 before edge processing shown on the right is Example 1, and the eyeglass lens before edge processing shown on the left is Comparative Example 1. The color of the weak reflected light of lighting (a fluorescent lamp with a color rendering rating of AAA daylight white) reflected so as to extend in the left-right direction on the object-side surface of Comparative Example 1 is green. In contrast, the color of the weak reflected light of the same lighting reflected so as to extend in the left-right direction on the object-side surface of Example 1 is blue. The reason why the intensity of the reflected light is low in Example 1 and Comparative Example 1 is because the multilayer film 4 has an anti-reflection function.

[0041] Regarding Example 2 and Comparative Example 2, which are related to the substrate 2 dyed wine red, in Comparative Example 2, green GreenAR is disposed on both sides of the substrate 2, so the color difference ΔEa before and after the formation of each GreenAR is * b * is 10.790, which exceeds 10. In Comparative Example 2, the absolute value of the YI value is 2.66, which exceeds 2.2. Furthermore, in Comparative Example 2, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range is 10.13, which exceeds 5. In contrast, in Example 2, the color difference ΔEa * b *is 6.776, which is less than 10. Therefore, more stable transmitted light can be obtained in the eyeglass lens 1. Furthermore, in Example 2, the absolute value of the YI value is 0.32, which is less than 2.2. Therefore, a sufficient degree of yellowness and blueness can be obtained. Furthermore, in Example 2, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range for the substrate 2 alone is 6.99 points, which is more than 5 points, while the difference between the maximum and minimum values ​​of transmittance in the specific wavelength range when the multilayer film 4 is further added to form the eyeglass lens 1 is 4.85 points, which is less than 5 points. Therefore, the eyeglass lens 1 using the substrate 2 dyed wine red can provide a neutral field of view closer to that of the naked eye or a colorless lens. FIG. 17 shows photographs taken from the object side of Example 2 and Comparative Example 2. The spectacle lens 1 on the right is Example 2, and the spectacle lens on the left is Comparative Example 2. The color of the weak reflected light of the lighting (a fluorescent lamp with a color rendering rating of AAA daylight white) reflected so as to extend in the left-right direction on the object-side surface of Comparative Example 2 is green. In contrast, the color of the weak reflected light of the same lighting reflected so as to extend in the left-right direction on the object-side surface of Example 2 is orange.

[0042] Regarding Example 3 and Comparative Example 3, which are related to the substrate 2 dyed violet, in Comparative Example 3, green GreenAR is disposed on both sides of the substrate 2, so the color difference ΔEa before and after the formation of each GreenAR is * b * is 11.040, which exceeds 10. In Comparative Example 3, the absolute value of the YI value is 3.74, which exceeds 2.2. Furthermore, in Comparative Example 3, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range is 9.88, which exceeds 5. In contrast, in Example 3, the color difference ΔEa * b *is 7.347, which is less than 10. Therefore, more stable transmitted light can be obtained in the eyeglass lens 1. Furthermore, in Example 3, the absolute value of the YI value is 0.88, which is less than 2.2. Therefore, a sufficient degree of yellowness and blueness can be obtained. Furthermore, in Example 3, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range for the substrate 2 alone is 7.18 points, which is more than 5 points, while the difference between the maximum and minimum values ​​of transmittance in the specific wavelength range when the multilayer film 4 is further added to form the eyeglass lens 1 is 3.43 points, which is less than 5 points. Therefore, the eyeglass lens 1 using the substrate 2 dyed violet can provide a neutral field of view closer to that of the naked eye or a colorless lens. FIG. 18 shows photographs taken from the object side of Example 3 and Comparative Example 3. The spectacle lens 1 on the right is Example 3, and the spectacle lens on the left is Comparative Example 3. The color of the weak reflected light of the lighting (a fluorescent lamp with a color rendering rating of AAA daylight white) reflected so as to extend in the left-right direction on the object-side surface of Comparative Example 3 is green. In contrast, the color of the weak reflected light of the same lighting reflected so as to extend in the left-right direction on the object-side surface of Example 3 is blue.

[0043] Regarding Example 4 and Comparative Example 4, which are related to the base material 2 dyed pink, since the green GreenAR is disposed on both sides of the base material 2 in Comparative Example 4, the color difference ΔEa before and after the formation of each GreenAR is * b * is 11.023, which exceeds 10. Furthermore, in Comparative Example 4, the difference between the maximum and minimum values ​​of the transmittance in the specific wavelength range is 9.31, which exceeds 5. In contrast, in Example 4, the color difference ΔEa * b *is 7.221, which is less than 10. Therefore, more stable transmitted light can be obtained in the spectacle lens 1. Furthermore, in Example 4, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range for the substrate 2 alone is 6.16 points, which exceeds 5 points, whereas when the multilayer film 4 is further added to form the spectacle lens 1, the difference between the maximum and minimum values ​​of transmittance in the specific wavelength range is 4.26 points, which is less than 5 points. Therefore, the spectacle lens 1 with the pink-dyed substrate 2 can provide a neutral field of view closer to that of the naked eye or a colorless lens.

[0044] Regarding Example 5 and Comparative Example 5, which are related to the substrate 2 dyed gray, since the green GreenAR is disposed on both sides of the substrate 2 in Comparative Example 5, the color difference ΔEa before and after the formation of each GreenAR is * b * is 10.622, which exceeds 10. Furthermore, in Comparative Example 5, the difference between the maximum and minimum values ​​of the transmittance in the specific wavelength range is 7.31, which exceeds 5. In contrast, in Example 5, the color difference ΔEa * b * is 9.517, which is less than 10. Therefore, more stable transmitted light can be obtained in the eyeglass lens 1. Furthermore, in Example 5, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range for the substrate 2 alone is 6.51 points, which exceeds 5 points, but when the multilayer film 4 is further added to form the eyeglass lens 1, the difference between the maximum and minimum values ​​of transmittance in the specific wavelength range is 4.88 points, which is less than 5 points. Therefore, the eyeglass lens 1 with the substrate 2 dyed gray can provide a neutral field of view closer to that of the naked eye or a colorless lens.

[0045] Regarding Example 6 and Comparative Example 6, which are related to the substrate 2 dyed green, in Comparative Example 6, the color difference ΔEa before and after each GreenAR formation * b * is 11.268, which exceeds 10. In Comparative Example 6, the absolute value of the YI value is 2.62, which exceeds 2.2. In contrast, in Example 6, the color difference ΔEa * b *is 9.606, which is 10 or less. Therefore, more stable transmitted light can be obtained in the eyeglass lens 1. Furthermore, in Example 6, the absolute value of the YI value is 1.79, which is 2.2 or less. Therefore, a sufficient amount of yellowness and blueness can be obtained.

[0046] Regarding Example 7 and Comparative Example 7, which are related to the substrate 2 dyed blue, since the green GreenAR is disposed on both sides of the substrate 2 in Comparative Example 7, the color difference ΔEa before and after the formation of each GreenAR is * b * is 10.959, which exceeds 10. In Comparative Example 7, the absolute value of the YI value is 4.62, which exceeds 2.2. Furthermore, in Comparative Example 7, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range is 5.14, which exceeds 5. In contrast, in Example 7, the color difference ΔEa * b * is 7.133, which is 10 or less. Therefore, more stable transmitted light can be obtained in the eyeglass lens 1. Furthermore, in Example 7, the absolute value of the YI value is 1.64, which is 2.2 or less. Therefore, a sufficient degree of yellowness and blueness can be obtained. Furthermore, in Example 7, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range for the substrate 2 alone is 13.26 points, which is more than 5 points, while the difference between the maximum and minimum values ​​of transmittance in the specific wavelength range when the multilayer film 4 is further added to form the eyeglass lens 1 is 4.32 points, which is 5 or less points. Therefore, the eyeglass lens 1 using the blue-dyed substrate 2 can provide a neutral field of view closer to that of the naked eye or a colorless lens.

[0047] Regarding Example 8 and Comparative Example 8, which are related to the substrate 2 dyed orange, since the green GreenAR is disposed on both sides of the substrate 2 in Comparative Example 8, the color difference ΔEa before and after the formation of each GreenAR is * b * is 10.834, which exceeds 10. In Comparative Example 8, the absolute value of the YI value is 4.31, which exceeds 2.2. Furthermore, in Comparative Example 8, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range is 5.57, which exceeds 5. In contrast, in Example 8, the color difference ΔEa * b * is 9.454, which is less than 10. Therefore, more stable transmitted light can be obtained in the eyeglass lens 1. Furthermore, in Example 8, the absolute value of the YI value is 1.54, which is less than 2.2. Therefore, a sufficient degree of yellowness and blueness can be obtained. Furthermore, in Example 8, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range for the substrate 2 alone is 6.08 points, which is more than 5 points, while the difference between the maximum and minimum values ​​of transmittance in the specific wavelength range when the multilayer film 4 is further added to form the eyeglass lens 1 is 4.47 points, which is less than 5 points. Therefore, the eyeglass lens 1 using the orange-dyed substrate 2 can provide a neutral field of view closer to that of the naked eye or a colorless lens.

[0048] [Examples 9 to 10] Examples 9 and 10 are similar to Examples 1 and 2 except for the film structure of the multilayer film 4 on the eyeball side and the film structure of the multilayer film 4 on the object side. The substrate 2, each hard coat film 3, and antifouling film 5 of Example 9 for navy blue are the same as those of Example 1. The substrate 2, each hard coat film 3, and antifouling film 5 of Example 10 are the same as those of Example 2. The film structure of each of the multilayer films 4 in Examples 9 and 10 is shown in Table 5 below. Table 6 below shows the measured luminous reflectance (%) of each of the multilayer films 4 of Examples 9 to 10 in a 2° visual field using a D65 light source. Furthermore, FIG. 19 shows a graph showing the measured spectral reflectance distribution in the visible range for each of the multilayer films 4 of Examples 9 and 10.

[0049] [Table 5]

[0050] [Table 6]

[0051] The multilayer film 4 on the eyeball side of Example 9 has a total of six layers. The odd-numbered layers of the multilayer film 4 on the eyeball side of Example 9 are ZrO2 layers, and the even-numbered layers are SiO2 layers. The multilayer film 4 on the eyeball side of Example 9 is colorless. The object-side multilayer film 4 of Example 9 has a total of five layers. The odd-numbered layers of the object-side multilayer film 4 of Example 9 are SiO2 layers, and the even-numbered layers are ZrO2 layers. For example, the object-side multilayer film 4 of Example 9 is designed to improve the flatness of the transmittance distribution in the visible range (particularly in a specific wavelength range) throughout Example 9, assuming that the eyeball-side multilayer film 4 of Example 9 has a relatively flat reflectance distribution in the visible range (particularly in a specific wavelength range) and that the substrate 2 is colored.

[0052] The multilayer film 4 on the eyeball side of Example 10 is the same as the multilayer film 4 on the eyeball side of Example 9. The object-side multilayer film 4 of Example 10 has a total of seven layers. The odd-numbered layers of the object-side multilayer film 4 of Example 10 are SiO2 layers, and the even-numbered layers are ZrO2 layers. For example, the object-side multilayer film 4 of Example 10 is designed to improve the flatness of the transmittance distribution in the visible range (particularly in a specific wavelength range) throughout Example 10, assuming that the eyeball-side multilayer film 4 of Example 10 has a relatively flat reflectance distribution in the visible range (particularly in a specific wavelength range) and that the substrate 2 is colored.

[0053] The following Table 7 shows the measured L values ​​for the eyeglass lenses 1 of Examples 9 and 10. * a * b * L in color space (CIE1976) * ,a * ,b * Each value, YI value, luminous transmittance (%) of D65 light source 2° field of view, difference between maximum and minimum transmittance in a specific wavelength range, and color difference ΔEa before and after forming each multilayer film 4 * b * is shown. 20 and 21 show graphs of the spectral transmittance distribution in the visible range measured in Example 9 and Comparative Example 1, and Example 10 and Comparative Example 2, respectively. Furthermore, in FIG. 22, the color (a * ,b * ) A graph of points in the plane is shown.

[0054] [Table 7]

[0055] In Example 9 relating to the substrate 2 dyed navy, the color difference ΔEa before and after the formation of each multilayer film 4 * b * is 8.409, which is less than 10. Therefore, the degree of change from light transmitted through the object-side multilayer film 4 to light transmitted through the substrate 2 is relatively small, and the degree of change from light transmitted through the substrate 2 to light transmitted through the eyeball-side multilayer film 4 is relatively small, resulting in more stable transmitted light in the eyeglass lens 1. Furthermore, in Example 9, the absolute value of the YI value is 0.63, which is less than 2.2. Therefore, a level of yellowness and blueness equivalent to or greater than that of a colorless, transparent substrate with GreenAR is obtained. Furthermore, in Example 9, the difference between the maximum and minimum transmittance values ​​in a specific wavelength range for the substrate 2 alone is 6.75 points, which is more than 5 points. However, when the multilayer film 4 is further added to form the eyeglass lens 1, the difference between the maximum and minimum transmittance values ​​in the specific wavelength range is 4.74 points, which is less than 5 points. Therefore, the eyeglass lens 1 with the navy-dyed substrate 2 provides a neutral field of view closer to that of the naked eye or a colorless lens. Moreover, in Example 9, a neutral field of view is obtained even when the film structure of the multilayer film 4 on the object side and the film structure of the multilayer film 4 on the eyeball side are different from each other.

[0056] In Example 10 relating to the substrate 2 dyed wine red, the color difference ΔEa * b *is 8.077, which is less than 10. Therefore, the spectacle lens 1 can obtain more stable transmitted light. Furthermore, in Example 10, the absolute value of the YI value is 0.94, which is less than 2.2. Therefore, a sufficient degree of yellowness and blueness is obtained. Furthermore, in Example 10, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range for the substrate 2 alone is 6.99 points, which is more than 5 points. However, when the multilayer film 4 is further added to form the spectacle lens 1, the difference between the maximum and minimum values ​​of transmittance in the specific wavelength range is 4.74 points, which is less than 5 points. Therefore, the spectacle lens 1 having the substrate 2 dyed wine red can obtain a neutral field of view closer to that of the naked eye or a colorless lens. Moreover, in Example 10, a neutral field of view is obtained even when the film structure of the multilayer film 4 on the object side and the film structure of the multilayer film 4 on the eyeball side are different from each other.

[0057] [Configurations and Effects of Examples 1 to 10] The configurations and effects of Examples 1 to 10 will be summarized below. Each of the spectacle lenses 1 in Examples 1 to 10 includes a substrate 2 that is colored by dyeing, and a multilayer film 4 that is indirectly disposed on both film-arrangement surfaces F of the substrate 2. The difference between the maximum and minimum transmittance values ​​in a specific wavelength range of 430 nm to 630 nm in the substrate 2 on which each multilayer film 4 is disposed is 5 points or less. The L * a * b * ΔEa in color system measurement * b * is less than or equal to 10. Therefore, in each spectacle lens 1 in which the substrate 2 is colored, each multilayer film 4 provides a neutral field of view close to that of the naked eye or a colorless lens.

[0058] Furthermore, each of the spectacle lenses 1 of Examples 1 to 5 and 7 to 10 includes a substrate 2 that is colored by dyeing, and multilayer films 4 that are indirectly disposed on both film-arrangement surfaces F of the substrate 2. In the substrate 2 on which each multilayer film 4 is not disposed, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range exceeds 5 points. In the substrate 2 on which each multilayer film 4 is disposed, the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range is 5 points or less. Therefore, in each of the spectacle lenses 1 in which the substrate 2 is colored in a state in which the difference between the maximum and minimum values ​​of transmittance is relatively large in a specific wavelength range corresponding to the complex sensitivity of the human eye, each multilayer film 4 provides a neutral field of view that is close to that of the naked eye or a colorless lens. Furthermore, in each of the spectacle lenses 1 in Examples 1 to 5 and 7 to 10 in which the difference between the maximum and minimum values ​​of transmittance in a specific wavelength range in the substrate 2 exceeds 5 points, the L * a * b * ΔEa in color system measurement * b * is 10 or less. This suppresses the change between the light transmitted through the multilayer film 4 on the object side and the light transmitted through the substrate 2, and the change between the light transmitted through the multilayer film 4 on the eyeball side and the light transmitted through the substrate 2. This provides a more stable field of view.

[0059] Furthermore, in each of the spectacle lenses 1 of Examples 1 to 10, the absolute value of the YI value is 2.2 or less. Therefore, the degree of yellowness and blueness is suppressed to levels equal to or less than those in colorless lenses with GreenAR. In particular, in each of the spectacle lenses 1 of Examples 1 to 3 and 6 to 10, the absolute value of the YI value, which exceeded 2.2 in Comparative Examples 1 to 3 and 6 to 8 related to GreenAR, is suppressed to 2.2 or less. Therefore, the field of view through the spectacle lenses 1 having the colored substrate 2 becomes more neutral. In addition, the luminous reflectance of each of the multilayer films 4 in Examples 1 to 10 in a 2° field of view with a D65 light source is 2% or less, thereby providing anti-reflection performance along with a neutral field of view. Furthermore, the luminous transmittance of each of the substrates 2 in Examples 1 to 10 in a 2° field of view with a D65 light source is 75% or more. Therefore, the color of each substrate 2 is not too dark, and a brighter, more neutral field of view is obtained. Furthermore, when an anti-reflection function is also imparted, the anti-reflection function can be imparted more easily.

[0060] Furthermore, each of the multilayer films 4 in Examples 1 to 10 includes one or more low-refractive-index layers and one or more high-refractive-index layers. Each high-refractive-index layer is a ZrO2 layer made of ZrO2. Each low-refractive-index layer is a SiO2 layer made of SiO2. Therefore, it is easy to design each of the multilayer films 4 for the transmitted light adjustment function that realizes a neutral field of view. Furthermore, each of the spectacle lenses 1 in Examples 1 to 10 is provided with an antifouling film 5 that exhibits at least one of water repellency and oil repellency. Each of the antifouling films 5 is disposed closer to the atmosphere than each of the multilayer films 4. Each of the antifouling films 5 is made of a fluorine-containing organic silicon compound. Therefore, each of the spectacle lenses 1 is provided with further antifouling properties.

[0061] Furthermore, the substrate 2 in each of Examples 1 to 10 is made of plastic, which means that the substrate 2 is less likely to break than if it were made of glass or other materials, and thus provides each eyeglass lens 1 that is easier to handle. Furthermore, each multilayer film 4 in Examples 1 to 10 is formed via a hard coat film 3. This improves the strength of each spectacle lens 1, and provides each spectacle lens 1 that is easier to handle. In addition, each of the hard coat films 3 in Examples 1 to 10 is colorless and transparent. Therefore, compared to when both the substrate 2 and the hard coat film 3 are colored, each multilayer film 4 can be more easily designed for a transmitted light adjusting function that realizes a neutral field of view in each eyeglass lens 1. [Explanation of symbols]

[0062] 1. Eyeglass lenses 2...Base material 3. Hard coat film 4...Multilayer film 5. Anti-fouling layer 6. Low refractive index layer 8. High refractive index layer F...Membrane placement surface

Claims

1. A colored substrate; a multilayer film disposed directly or indirectly on the film-disposition surface of the substrate; It is equipped with the difference between the maximum value and the minimum value of transmittance in a specific wavelength range of 430 nm or more and 630 nm or less in the substrate on which the multilayer film is disposed is 5 points or less; L relating to the color difference between the color of the substrate on which the multilayer film is not disposed and the color of the substrate on which the multilayer film is disposed ＊ a ＊ b ＊ ΔEa in color system measurement ＊ b ＊ is less than or equal to 10 A spectacle lens characterized by:

2. A colored substrate; a multilayer film disposed directly or indirectly on the film-disposition surface of the substrate; It is equipped with a difference between a maximum value and a minimum value of transmittance in a specific wavelength range of 430 nm or more and 630 nm or less in the substrate on which the multilayer film is not disposed exceeds 5 points; The difference between the maximum and minimum transmittance values ​​in the specific wavelength range of the substrate on which the multilayer film is disposed is 5 points or less. A spectacle lens characterized by:

3. L relating to the color difference between the color of the substrate on which the multilayer film is not disposed and the color of the substrate on which the multilayer film is disposed ＊ a ＊ b ＊ ΔEa in color system measurement ＊ b ＊ is less than or equal to 10 3. The eyeglass lens according to claim 2.

4. The absolute value of the YI value is 2.2 or less.

3. The eyeglass lens according to claim 1 or 2.

5. The luminous reflectance of the multilayer film under a 2° visual field of a D65 light source is 2% or less.

3. The eyeglass lens according to claim 1 or 2.

6. The luminous transmittance of the substrate at a 2° viewing angle of a D65 light source is 75% or more.

3. The eyeglass lens according to claim 1 or 2.

7. The multilayer film includes one or more low refractive index layers and one or more high refractive index layers.

3. The eyeglass lens according to claim 1 or 2.

8. The high refractive index layer is made of ZrO ２ ZrO ２ Layer 8. The eyeglass lens according to claim 7.

9. The low refractive index layer is made of SiO ２ The layer is made of SiO ２ Layer 8. The eyeglass lens according to claim 7.

10. The antifouling film has at least one of water repellency and oil repellency, The antifouling film is disposed closer to the atmosphere than the multilayer film.

3. The eyeglass lens according to claim 1 or 2.

11. The antifouling film is a fluorine-containing organosilicon compound.

11. The eyeglass lens according to claim 10.

12. The substrate is made of plastic 3. The eyeglass lens according to claim 1 or 2.

13. The multilayer film is formed via a hard coat film.

3. The eyeglass lens according to claim 1 or 2.

14. The hard coat film is colorless and transparent.

14. The spectacle lens according to claim 13.

15. A spectacle lens according to claim 1 or 2 is provided. Glasses characterized by:

Images