Spectacle lens and spectacles

Abstract

To provide a spectacle lens that is comfortable to wear.SOLUTION: A spectacle lens disclosed herein comprises a lens base material and a multilayer films respectively provided on an object-side surface and an eyeball-side surface of the lens base material. The spectacle lens has an average reflectance of 1.9% or grater in a wavelength range of 600-780 nm on an object side surface and a luminous reflectance Rv of 0.60% or less on an eyeball-side surface.SELECTED DRAWING: None

Description

[Technical field]

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

[0002] Spectacle lenses are generally manufactured by forming a functional film on the surface of a lens substrate to provide the spectacle lens with a desired function. As such a functional film, a multilayer film is provided on the surface of the lens substrate (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-106954 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, various products featuring various functions have been proposed and sold in the spectacle lens market. In order to provide spectacle lenses with higher added value in the market, it is desirable for the spectacle lenses to have a good wearing comfort.

[0005] An object of one aspect of the present invention is to provide a spectacle lens that is comfortable to wear. [Means for solving the problem]

[0006] Specific examples of the comfortable wearing of a spectacle lens include a case where a wearer of the spectacle lens is less likely to feel glare, and a case where a wearer of the spectacle lens is less likely to feel ghosts (multiple images) and / or flare (a phenomenon in which a light source and its surroundings are seen as a cloudy white image). As a result of intensive research, the present inventors have newly discovered that a spectacle lens including a lens substrate and a multilayer film located on the object-side surface and the object-side surface of the lens substrate, in which the average reflectance in the wavelength range of 600 to 780 nm of the object-side surface of the spectacle lens is 1.9% or more, and the luminous reflectance Rv of the eyeball-side surface of the spectacle lens is 0.60% or less, is less likely to feel ghosts or flare, and is less likely to feel glare in the evening.

[0007] That is, one aspect of the present invention is as follows. [1] A lens substrate and a multilayer film located on an object-side surface and an object-side surface of the lens substrate, The average reflectance of the object-side surface of the eyeglass lens in the wavelength range of 600 to 780 nm is 1.9% or more, and A spectacle lens having a luminous reflectance Rv of 0.60% or less on the surface facing the eyeball. [2] The eyeglass lens according to [1], wherein the average reflectance of the object-side surface of the eyeglass lens in the wavelength range of 600 to 780 nm is 1.9% or more and 5.0% or less. [3] The eyeglass lens according to [1] or [2], wherein the average reflectance of the object-side surface of the eyeglass lens in the wavelength range of 600 to 780 nm is 1.9% or more and 3.0% or less. [4] The eyeglass lens according to any one of [1] to [3], wherein the luminous reflectance Rv of the surface of the eyeglass lens facing the eyeball is 0.50% or less. [5] The eyeglass lens according to any one of [1] to [4], wherein the luminous reflectance Rv of the surface of the eyeglass lens facing the eyeball is 0.40% or less. [6] A spectacle lens according to any one of [1] to [5], wherein the average reflectance in the wavelength range of 600 to 780 nm of the object-side surface of the spectacle lens is 1.9% or more and 3.0% or less, and the luminous reflectance Rv of the eyeball-side surface of the spectacle lens is 0.40% or less. [7] Glasses equipped with the eyeglass lens according to any one of [1] to [6]. Effect of the Invention

[0008] According to one aspect of the present invention, it is possible to provide a spectacle lens that is comfortable to wear. Also, according to another aspect of the present invention, it is possible to provide spectacles including the spectacle lens. [Brief description of the drawings]

[0009] [Figure 1] 1 shows a diagram of the position of a spectacle wearer (subject) and the sun when evaluating the wearing comfort of spectacle lenses of Examples and Comparative Examples. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The definitions and / or measurement methods of the terms used in the present invention and this specification are explained below.

[0011] The "object-side surface" is the surface that is located on the object side when a wearer wears spectacles equipped with the spectacle lens. The "eyeball-side surface" is the opposite surface, i.e., the surface that is located on the eyeball side when a wearer wears spectacles equipped with the spectacle lens.

[0012] The reflectance measured on the surface of a spectacle lens is the reflectance for light that is directly incident on the surface. The reflectance can be measured, for example, at intervals of 1 to 5 nm. The average reflectance in a certain wavelength region is the arithmetic mean of the reflectances obtained in that wavelength region. Therefore, the average reflectance in the wavelength region of 600 to 780 nm of the object-side surface of a spectacle lens is the arithmetic mean of the reflectances obtained in the wavelength region of 600 to 780 nm. Regarding the angle of incidence of light incident on the surface to be measured, the angle of incidence of directly incident light is strictly 0°. However, from the viewpoint of the measurement optical system, some reflectance measuring instruments may use incident light with an incidence angle of about 0° to 5° as directly incident light. Such cases are also included in the "direct incidence" in the present invention and this specification. In addition, some reflectance measuring instruments may be affected by multiple reflections between the surface to be measured and the opposing surface. In such cases, multiple reflections may be suppressed by applying a treatment (such as a black coating treatment) to the opposing surface to absorb or scatter light rays.

[0013] The "luminous reflectance Rv" is a value measured according to JIS T 7334:2011. The luminous reflectance Rv measured on the eyeball side surface of a spectacle lens is the luminous reflectance obtained for light directly incident on that surface. The directly incident light is as described above.

[0014] The "film thickness" described in this specification is a physical film thickness. The film thickness can be determined by a known film thickness measurement method. For example, the film thickness can be determined by converting the optical film thickness measured by an optical film thickness measurement device into a physical film thickness.

[0015] [Eyeglass lenses] Hereinafter, a spectacle lens according to one aspect of the present invention will be described in further detail.

[0016] <Average reflectance of the object-side surface of a spectacle lens in the wavelength range of 600 to 780 nm> In the above spectacle lens, the average reflectance of the object-side surface of the spectacle lens in the wavelength range of 600 to 780 nm is 1.9% or more. The scattered light during the day is dominated by short-wavelength light among visible light. In contrast, the light of the sunset is dominated by long-wavelength light, and the scattered light is also dominated by long-wavelength light. Since the object-side surface of the above spectacle lens has a high average reflectance of 1.9% or more for long-wavelength light among visible light, it is possible to reduce the degree to which a wearer of glasses equipped with this spectacle lens feels dazzling scattered light of the sunset in the evening. From the viewpoint of further reducing the glare felt by a wearer of glasses in the evening, the average reflectance of the object-side surface of the above spectacle lens in the wavelength range of 600 to 780 nm is preferably 2.0% or more, more preferably 2.1% or more. The average reflectance of the object-side surface of the spectacle lens in the wavelength region of 600 to 780 nm can be, for example, 5.0% or less, 4.5% or less, 4.0% or less, 3.5% or less, 3.0% or less, 2.9% or less, or 2.8% or less. However, the higher the average reflectance, the more the glare felt by the spectacle wearer in the evening can be reduced, so the average reflectance may exceed the above range.

[0017] In the above spectacle lens, the average reflectance in the wavelength region of 600 to 780 nm on the eyeball side surface may be within the above range or may be outside the above range.

[0018] <Luminous reflectance Rv of the surface of the eyeglass lens facing the eyeball> Furthermore, in the above-mentioned spectacle lens, the luminous reflectance Rv of the eyeball side surface of the spectacle lens is 0.60% or less. The fact that the eyeball side surface of the spectacle lens is a low-reflectance surface in this way can contribute to the spectacle wearer being less likely to perceive ghosts and flare. For example, since the sun angle is low in the evening, people tend to be more likely to perceive flare in comparison with daytime, and the above-mentioned spectacle lens can contribute to the spectacle wearer being less likely to perceive flare in the evening. The luminous reflectance Rv of the eyeball side surface of the spectacle lens being 0.60% or less can thus lead to an improvement in the wearing comfort of the spectacle lens. From the viewpoint of further improving the wearing comfort of the spectacle lens, the luminous reflectance Rv of the eyeball side surface of the spectacle lens is preferably 0.50% or less, and more preferably 0.40% or less. The luminous reflectance Rv of the eyeball side surface of the spectacle lens can be, for example, 0.05% or more or 0.10% or more. However, from the viewpoint of improving the wearing comfort of the spectacle lens, it is preferable that the luminous reflectance Rv of the eyeball-side surface of the spectacle lens is low. Therefore, the luminous reflectance Rv of the eyeball-side surface of the spectacle lens may be below the above range.

[0019] In the above spectacle lens, the luminous reflectance Rv of the object-side surface may be within the above range or may be outside the above range.

[0020] The above-mentioned various physical properties measured on each of the object-side surface and the eyeball-side surface of the spectacle lens can be adjusted, for example, by the design of the multilayer film provided on each surface of the spectacle lens. The design of the multilayer film can be determined, for example, by optical simulation using a known method.

[0021] <Lens substrate> The lens substrate contained in the above-mentioned spectacle lens can be a plastic lens substrate or a glass lens substrate. The glass lens substrate can be, for example, a lens substrate made of inorganic glass. As the lens substrate, a plastic lens substrate is preferable from the viewpoint of being lightweight and not easily broken. Examples of the plastic lens substrate include (meth)acrylic resin, styrene resin, polycarbonate resin, allyl resin, allyl carbonate resin such as diethylene glycol bisallyl carbonate resin (CR-39), vinyl resin, polyester resin, polyether resin, urethane resin obtained by reacting an isocyanate compound with a hydroxy compound such as diethylene glycol, thiourethane resin obtained by reacting an isocyanate compound with a polythiol compound, and a cured product (generally called a transparent resin) obtained by curing a curable composition containing a (thio)epoxy compound having one or more disulfide bonds in the molecule. The curable composition can also be called a polymerizable composition. The lens substrate can contain known additives. One example of the additives is an ultraviolet absorbing agent. A lens substrate containing an ultraviolet absorbing agent can reduce the amount of ultraviolet light entering the object side surface and entering the eye of the spectacle wearer.

[0022] The lens substrate may be either uncolored (colorless lens) or colored (colored lens). The refractive index of the lens substrate may be, for example, about 1.50 to 1.75. However, the refractive index of the lens substrate is not limited to the above range, and may be within the above range or may be above or below the above range. In the present invention and this specification, the refractive index refers to the refractive index for light with a wavelength of 500 nm. The lens substrate may be a lens with refractive power (so-called prescription lens) or a lens without refractive power (so-called non-prescription lens).

[0023] The spectacle lens may be any of various lenses, such as a single-focus lens, a multifocal lens, or a progressive power lens. The type of lens is usually determined by the surface shapes of both sides of the lens substrate. The surface of the lens substrate may be convex, concave, or flat. In normal lens substrates and spectacle lenses, the object side surface is convex and the eyeball side surface is concave. However, the present invention is not limited thereto.

[0024] <Multilayer film> The above-mentioned spectacle lens has a multilayer film on each of the object-side surface and the eyeball-side surface of a lens substrate. The multilayer film located on the object-side surface of the lens substrate and the multilayer film located on the eyeball-side surface may be the same multilayer film or different multilayer films.

[0025] The multilayer film may be located directly on the surface of the lens substrate, or may be located indirectly on the surface of the lens substrate via one or more other layers. Examples of layers that can be formed between the lens substrate and the multilayer film include a polarizing layer, a photochromic layer, and a hard coat layer. The durability (strength) of the spectacle lens can be increased by providing a hard coat layer. The hard coat layer can be, for example, a cured layer obtained by curing a curable composition. For details of the hard coat layer, see, for example, paragraphs 0025 to 0028 and 0030 of JP-A-2012-128135. In addition, a primer layer for improving adhesion may be formed between the lens substrate and the multilayer film. For details of the primer layer, see, for example, paragraphs 0029 to 0030 of JP-A-2012-128135.

[0026] A known film formation method can be used as a method for forming the multilayer film. From the viewpoint of ease of film formation, the film is preferably formed by vapor deposition. That is, each layer included in the multilayer film is preferably a vapor deposition film. A vapor deposition film means a film formed by vapor deposition. In the present invention and this specification, "vapor deposition" includes dry methods such as vacuum deposition, ion plating, and sputtering. In the vacuum deposition method, an ion beam assisted method in which an ion beam is irradiated simultaneously during vapor deposition may be used.

[0027] The multilayer film can have a laminated structure in which high and low refractive index layers are alternately laminated. In the present invention and this specification, the terms "high" and "low" in relation to "high refractive index" and "low refractive index" are relative terms. That is, a high refractive index layer refers to a layer having a higher refractive index than a low refractive index layer contained in the same multilayer film. In other words, a low refractive index layer refers to a layer having a lower refractive index than a high refractive index layer contained in the same multilayer film. The refractive index of the high refractive index layer can be, for example, 1.60 or more (for example, in the range of 1.60 to 2.40), and the refractive index of the low refractive index layer can be, for example, 1.59 or less (for example, in the range of 1.37 to 1.59). However, as described above, the terms "high" and "low" in relation to high and low refractive index are relative terms, so the refractive indexes of the high and low refractive index materials are not limited to the above ranges. In addition, three or more layers having different refractive indexes may be included in the multilayer film.

[0028] As the high refractive index material constituting the high refractive index layer and the low refractive index material constituting the low refractive index layer, inorganic materials, organic materials, or organic-inorganic composite materials can be used, and inorganic materials are preferred from the viewpoint of film formation and the like. That is, the multilayer film is preferably an inorganic multilayer film. Specifically, as the high refractive index material for forming the high refractive index layer, one or a mixture of two or more oxides selected from the group consisting of zirconium oxide (e.g., ZrO2), tantalum oxide (Ta2O5), titanium oxide (e.g., TiO2), aluminum oxide (Al2O3), yttrium oxide (e.g., Y2O3), hafnium oxide (e.g., HfO2), and niobium oxide (e.g., Nb2O5) can be mentioned. On the other hand, as the low refractive index material for forming the low refractive index layer, one or a mixture of two or more oxides or fluorides selected from the group consisting of silicon oxide (e.g., SiO2), magnesium fluoride (e.g., MgF2), and barium fluoride (e.g., BaF2) can be mentioned. In the above examples, for convenience, the oxides and fluorides are shown in terms of stoichiometric composition, but those in which there is a deficiency or excess of oxygen or fluorine from the stoichiometric composition can also be used as high refractive index materials or low refractive index materials.

[0029] Preferably, the high refractive index layer is a film mainly made of a high refractive index material, and the low refractive index layer is a film mainly made of a low refractive index material. Here, the main component is a component that occupies the largest amount in the 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, based on the mass of the film. Such a film (e.g., a vapor deposition film) can be formed by forming a film using a film forming material (e.g., a vapor deposition source) mainly made of the above-mentioned high refractive index material or low refractive index material. The main component of the film forming material is the same as above. The film and the film forming material may contain impurities that are inevitably mixed in, and may also contain other components, such as other inorganic substances and known additive components that play a role in assisting film formation, within a range that does not impair the function performed by the main component. The film can be formed by a known film forming method, and is preferably formed by vapor deposition from the viewpoint of ease of film formation.

[0030] The multilayer film can be, for example, a multilayer film in which high refractive index layers and low refractive index layers are alternately laminated in a total of 3 to 10 layers. The film thickness of the high refractive index layer and the film thickness of the low refractive index layer can be determined according to the layer structure. In detail, the combination of layers included in the multilayer film and the film thickness of each layer can be determined by optical simulation using a known method based on the refractive index of the film forming material for forming the high refractive index layer and the low refractive index layer, and various physical properties that are desired to be imparted to the eyeglass lens by providing the multilayer film. The layer structure of the multilayer film is, for example, as follows, from the lens substrate side to the lens outermost surface side: A structure in which the layers are stacked in the following order: 1st layer (low refractive index layer) / 2nd layer (high refractive index layer) / 3rd layer (low refractive index layer) / 4th layer (high refractive index layer) / 5th layer (low refractive index layer) / 6th layer (high refractive index layer) / 7th layer (low refractive index layer); A structure in which the layers are stacked in the following order: 1st layer (low refractive index layer) / 2nd layer (high refractive index layer) / 3rd layer (low refractive index layer) / 4th layer (high refractive index layer) / 5th layer (low refractive index layer) / 6th layer (high refractive index layer) / 7th layer (low refractive index layer) / 8th layer (high refractive index layer) / 9th layer (low refractive index layer); Examples include a configuration in which the first layer is a high refractive index layer, and a configuration including three layers with different refractive indices (a high refractive index layer, a low refractive index layer, and a layer (medium refractive index layer) having a refractive index lower than that of the high refractive index layer and higher than that of the low refractive index layer). In the above examples of layer configurations, the notation " / " is used to mean a case in which the layer written to the left of the " / " and the layer written to the right are in direct contact with each other, and a case in which a conductive oxide layer (described later) is present between the layer written to the left of the " / " and the layer written to the right.

[0031] A preferred example of the combination of the low refractive index layer and the high refractive index layer included in the multilayer film is a combination of a layer mainly composed of silicon oxide (silicon oxide layer; low refractive index layer) and a layer mainly composed of zirconium oxide (zirconium oxide layer; high refractive index layer). Also, a combination of a layer mainly composed of silicon oxide (silicon oxide layer; low refractive index layer) and a layer mainly composed of niobium oxide (niobium oxide layer; high refractive index layer) can be mentioned. A combination of a layer mainly composed of silicon oxide (silicon oxide layer; low refractive index layer) and a layer mainly composed of tantalum oxide (tantalum oxide layer; high refractive index layer) can be mentioned. A combination of a layer mainly composed of silicon oxide (silicon oxide layer; low refractive index layer) and a layer mainly composed of titanium oxide (titanium oxide layer; high refractive index layer) can be mentioned. An example of the multilayer film can be a multilayer film including at least one laminate structure in which the two layers of the above combination are in direct contact with each other or a conductive oxide layer described later exists between the two layers of the above combination. A multilayer film having the above-mentioned combination of a low refractive index layer and a high refractive index layer and also including an aluminum oxide layer as a medium refractive index layer is also a preferred example.

[0032] The thickness of each of the high refractive index layers and the low refractive index layers included in the multilayer film can be, for example, 3 to 500 nm, and the total thickness of the multilayer film can be, for example, 100 to 900 nm.

[0033] In addition to the high refractive index layer and the low refractive index layer described above, the multilayer film may also include a layer (conductive oxide layer) mainly composed of a conductive oxide, preferably one or more vapor deposition films of a conductive oxide formed by vapor deposition using a vapor deposition source mainly composed of a conductive oxide, at any position of the multilayer film. The main components described for the conductive oxide layer are the same as those described above. From the viewpoint of transparency of the eyeglass lens, the conductive oxide layer is preferably an indium tin oxide (ITO) layer having a thickness of 10 nm or less, a tin oxide layer having a thickness of 10 nm or less, and a titanium oxide layer having a thickness of 10 nm or less. An indium tin oxide (ITO) layer is a layer containing ITO as a main component. This also applies to a tin oxide layer and a titanium oxide layer. By including a conductive oxide layer in the multilayer film, it is possible to prevent the eyeglass lens from being charged and dust and dirt from adhering. In the present invention and this specification, an indium tin oxide (ITO) layer having a thickness of 10 nm or less, a tin oxide layer having a thickness of 10 nm or less, and a titanium oxide layer having a thickness of 10 nm or less are not considered as the "high refractive index layer" and the "low refractive index layer" contained in the multilayer film. That is, even if one or more of these layers are included in the multilayer film, these layers are not considered to be "high refractive index layer" or "low refractive index layer". The thickness of the conductive oxide layer having a thickness of 10 nm or less can be, for example, 0.1 nm or more.

[0034] Furthermore, a further functional film can be formed on the multilayer film. Examples of such a functional film include various functional films such as a water-repellent or hydrophilic antifouling film, an antifogging film, etc. For these functional films, known techniques can be applied.

[0035] [glasses] A further aspect of the present invention relates to glasses equipped with the glasses lens according to the above-mentioned aspect of the present invention. Details of the glasses lens included in the glasses are as described above. The glasses can present a good appearance by being equipped with such glasses lens. There is no particular limitation on the configuration of the glasses such as the frame, and publicly known technology can be applied. EXAMPLES

[0036] The present invention will be further described below with reference to examples, although the present invention is not limited to the embodiments shown in the examples.

[0037] [Examples 1 to 9] A multilayer vapor deposition film having the layer structure shown in Table 1 was formed on the hard coat surface on the concave side (eyeball side) of a plastic lens substrate (colorless lens, refractive index 1.5 or 1.7) that had been optically finished on both sides and had a hard coat applied in advance, with the object side surface being a convex surface and the eyeball side surface being a concave surface, by ion-assisted vapor deposition using oxygen gas and nitrogen gas as assist gases. A multilayer deposition film having the layer structure shown in Table 1 was also formed on the hard coat surface on the convex side (object side) by ion-assisted deposition under the same conditions. In each example, the multilayer deposition film was formed by laminating a first layer, a second layer, and so on from the lens substrate side (hard coat side) toward the spectacle lens surface side using deposition sources shown from the bottom to the top of Table 1 in that order, so that the outermost layer on the spectacle lens surface side was a layer formed by the deposition source shown in the top column of Table 1. In these examples, deposition sources made of oxides shown in Table 1, excluding impurities that may be inevitably mixed in, were used, and each layer was formed in sequence to the thickness shown in Table 1. In this manner, the spectacle lenses of Examples 1 to 9 were obtained.

[0038] [Table 1]

[0039] [Comparative Example 1] The spectacle lens of Comparative Example 1 is a spectacle lens having a multilayer film with the following layer configuration on the convex side (object side) and the concave side (eyeball side).

[0040] [Table 2]

[0041] [Comparative Example 2] The spectacle lens of Comparative Example 2 is a spectacle lens having a multilayer film with the following layer configuration on the convex side (object side) and the concave side (eyeball side).

[0042] [Table 3]

[0043] [Measurement of various physical properties of the object side surface of eyeglass lenses] <Luminous reflectance Rv of the eyeball surface> The normal incidence reflectance spectral characteristics at the optical center of the eyeball side surface of each of the spectacle lenses of the examples and comparative examples were measured. The measurements were performed using an Olympus lens reflectance measuring instrument USPM-RU (measurement pitch: 1 nm, measurement conditions set to normal incidence). From the normal incidence reflectance spectral characteristics measured above, the luminous reflectance Rv of the eyeball side surface was calculated in accordance with JIS T 7334:2011.

[0044] <Average reflectance of the object-side surface of a spectacle lens in the wavelength range of 600 to 780 nm> The normal incidence reflectance spectral characteristics at the optical center of the object-side surface of each of the spectacle lenses of the examples and comparative examples were measured using an Olympus lens reflectance measuring instrument USPM-RU (measurement pitch: 1 nm, measurement conditions set to normal incidence). From the normal incidence reflection spectral characteristics measured above, the average reflectance of the object-side surface in the wavelength range of 600 to 780 nm was calculated.

[0045] Since each of the spectacle lenses of Examples 1 to 9 and Comparative Example 1 and Comparative Example 2 has the same multilayer film on both sides, the physical properties measured at the object-side surface are the same as the physical properties measured at the eyeball-side surface, and the physical properties measured at the eyeball-side surface are the same as the physical properties measured at the object-side surface.

[0046] [Table 4]

[0047] [Evaluation of wearing comfort] FIG. 1 shows the position of the sun and the eyeglass wearer (subject) during the evaluation of wearing comfort. Spectacles equipped with the spectacle lenses of Example 1, Comparative Example 1, and Comparative Example 2 were produced. In the evening, subjects wearing each pair of glasses were asked to look at the sunlight while being careful, and a sensory evaluation was conducted by the subjects. There were 10 subjects, and each subject evaluated "Evaluation item 1: glare" and "Evaluation item 2: state of ghost and / or flare". For "Evaluation item 1: glare", the subjects rated the glasses on a 5-point scale: 5 points: not glare, 4 points: slightly glare, 3 points: more glare than 4 points, 2 points: more glare than 3 points, 1 point: more glare than 2 points. For "Evaluation item 2: state of ghost and / or flare", the subjects rated the glasses on a 5-point scale: 5 points: neither ghost nor flare bothersome, 4 points: ghost and / or flare bothersome, 3 points: more bothersome than 4 points, 2 points: more bothersome than 3 points, 1 point: more bothersome than 2 points. The scores given by the 10 subjects are shown in Table 5. The arithmetic mean of the scores of the 10 subjects for each of Evaluation Item 1 and Evaluation Item 2, and the arithmetic mean of the scores for both evaluation items (total mean) are shown in Table 6. It can be said that the higher the score shown in Table 6, the better the wearing comfort of the eyeglass lenses.

[0048] [Table 5]

[0049] [Table 6]

[0050] From the above results, it can be confirmed that controlling the average reflectance in the wavelength region of 600 to 780 nm of the object-side surface and the luminous reflectance Rv of the eyeball-side surface within the ranges described above contributes to improving the wearing comfort of the eyeglass lens.

[0051] The various aspects described herein may be combined in any combination of two or more.

[0052] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Industrial Applicability]

[0053] The present invention is useful in the field of manufacturing eyeglass lenses and eyeglasses.

Claims

1. a lens substrate; and a multilayer film located on an object-side surface and an eyeball-side surface of the lens substrate, The average reflectance of the object-side surface of the spectacle lens in the wavelength range of 600 to 780 nm is 1.9% or more, and A spectacle lens having a luminous reflectance Rv of the surface of the spectacle lens facing the eyeball of 0.60% or less.

2. 2. The spectacle lens according to claim 1, wherein the average reflectance of the object-side surface of the spectacle lens in the wavelength region of 600 to 780 nm is 1.9% or more and 5.0% or less.

3. 2. The spectacle lens according to claim 1, wherein the average reflectance of the object-side surface of the spectacle lens in the wavelength region of 600 to 780 nm is 1.9% or more and 3.0% or less.

4. 2. The spectacle lens according to claim 1, wherein the luminous reflectance Rv of the surface of the spectacle lens facing the eyeball is 0.50% or less.

5. 2. The spectacle lens according to claim 1, wherein the luminous reflectance Rv of the surface of the spectacle lens facing the eyeball is 0.40% or less.

6. 2. The eyeglass lens according to claim 1, wherein the average reflectance in the wavelength region of 600 to 780 nm of the object-side surface of the eyeglass lens is 1.9% or more and 3.0% or less, and the luminous reflectance Rv of the eyeball-side surface of the eyeglass lens is 0.40% or less.

7. Eyeglasses comprising the eyeglass lens according to any one of claims 1 to 6.

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