Method for providing ophthalmic lens set, method for manufacturing eyeglasses, method for manufacturing ophthalmic transmissive optical article, method for manufacturing binoculars, and ophthalmic lens set

Abstract

The purpose of the present disclosure is to provide an ophthalmic lens set with which objects can be more easily seen. A method for providing an ophthalmic lens set according to the present disclosure is configured as follows: from an optical article group consisting of a plurality of ophthalmic lenses, an ophthalmic lens set which consists of two ophthalmic lenses having mutually different minimum transmittances at wavelengths ranging from 450 to 630 nm is selected; and the ophthalmic lens set is provided such that, on the basis of dominant-eye information, the ophthalmic lens, of the two selected ophthalmic lenses, which has the lower minimum transmittance serves as a lens for the dominant eye.

Description

Method for providing an ophthalmic lens set, method for manufacturing eyeglasses, method for manufacturing a transparent optical article for eyes, method for manufacturing binoculars, and ophthalmic lens set

[0001] The present disclosure relates to an ophthalmic lens set, a method for providing an ophthalmic lens set, a method for manufacturing an ophthalmic transmission optical article, a method for manufacturing binoculars, and a method for manufacturing eyeglasses.

[0002] Ophthalmic lenses have been proposed that improve contrast by reducing the transmittance of visible light at shorter wavelengths (blue and green light). That is, colored lenses have been proposed. For example, Patent Document 1 discloses an optical product (eyeglass lens) in which the maximum transmittance of P-polarized light and the maximum transmittance of S-polarized light are at different wavelengths.

[0003] JP 2013-083892 A

[0004] The present disclosure relates to a method for providing an ophthalmic lens set, which comprises selecting an ophthalmic lens set from a group of two ophthalmic lenses having different minimum transmittances at wavelengths of 450 to 630 nm from a group of optical articles composed of a plurality of ophthalmic lenses, and providing the ophthalmic lens set by using the one of the two selected ophthalmic lenses with the lower minimum transmittance as the dominant eye based on dominant eye information.The present disclosure also relates to a method for manufacturing the ophthalmic lens set, a method for manufacturing ophthalmic transmission optical articles, a method for manufacturing binoculars, and a method for manufacturing eyeglasses.

[0005] Fig. 1 is a schematic diagram showing an example of a providing device used in a method for providing an ophthalmic lens set. Fig. 2 is a perspective view of an embodiment of eyeglasses manufactured by the manufacturing method of the present disclosure. Fig. 3 is a perspective view of an embodiment of a transmissive optical article manufactured by the manufacturing method of the present disclosure. Fig. 4 is a schematic cross-sectional view of an embodiment of binoculars manufactured by the manufacturing method of the present disclosure. Fig. 5 is a partial enlarged view of the spectral transmittance curve of the colored lens used in the examples. Fig. 6 is a partial enlarged view of the spectral transmittance curve of the colored lens used in the examples.

[0006] The ophthalmic lens set and the method for providing the ophthalmic lens set of this embodiment, as well as the method for manufacturing an ophthalmic transmission optical article, the method for manufacturing binoculars, and the method for manufacturing eyeglasses will be described in detail below. As an ophthalmic lens set, an ophthalmic lens set that makes it easier to see objects is desired. The ophthalmic lens set of this embodiment has the property of making it easier to see objects. In this specification, the symbol "to" is used to mean that the numerical values ​​written before and after it are included as the lower limit and upper limit.

[0007] <Dominant Eye Information> In the present disclosure, dominant eye information refers to information on which of the user's eyes (the left or right eye) can more clearly see an object when viewed monocularly (the dominant eye). The dominant eye may be determined by the user's declaration, or the eye with better visual acuity may be determined as the dominant eye by measuring the user's monocular visual acuity. The visual acuity measurement may be performed using a known method. Furthermore, if the dominant eye cannot be determined using the above method, it may be determined using a known method for determining the dominant eye. Examples of methods for determining the dominant eye include the Konuma method and the pointing method (Rosenbach method).

[0008] A provision device used in the method for providing an ophthalmic lens set of the present disclosure will be described. Fig. 1 is a schematic diagram showing an example of a provision device used in the method for providing an ophthalmic lens set. The provision device 10 has a processing unit 12, an input unit 14, and a display unit 16. The processing unit 12 has a memory unit 20, a selection unit 22, an ordering unit 24, and a control unit 26. The memory unit 20, the selection unit 22, and the ordering unit 24 are controlled by the control unit 26.

[0009] The input unit 14 is an input device such as a mouse and a keyboard for inputting various information in response to an instruction from an operator. The display unit 16 is configured, for example, with a monitor, and displays information on the optical component group, information on the selected ophthalmic lens, information on the ophthalmic lens set, etc.

[0010] The storage unit 20 stores information about an optical article group consisting of a plurality of ophthalmic lenses. The information about the optical article group includes information about the minimum transmittance of each of the plurality of ophthalmic lenses at wavelengths of 450 to 630 nm. Other information about the optical article group includes, for example, image data showing the appearance of the ophthalmic lenses, dimensional data such as the size and thickness of the ophthalmic lenses, data showing the power of the ophthalmic lenses, the luminous transmittance of the ophthalmic lenses, and coating data such as the presence or absence of an anti-reflection layer. Each of the plurality of ophthalmic lenses constituting the optical article group is assigned a product code, for example. The storage unit 20 also stores the product codes assigned to the ophthalmic lenses. The configuration of the storage unit 20 is not particularly limited as long as it can store information about the optical article group. The storage unit 20 may be, for example, a physical storage medium such as a hard disk drive (HDD), a solid state drive (SSD), or a dynamic random access memory (DRAM), or may be a storage area located on a cloud connected via the Internet.

[0011] The selection unit 22 selects an ophthalmic lens set consisting of two ophthalmic lenses having different minimum transmittances in the wavelength range of 450 to 630 nm from the information of the group of optical articles stored in the storage unit 20 based on information from the input unit 14. The selection of the two ophthalmic lens sets by the selection unit 22 includes, for example, selecting the product codes assigned to the ophthalmic lenses. Since the selection unit 22 selects two ophthalmic lenses, two corresponding product codes are selected. Information on the selected ophthalmic lens set is obtained by the selection unit 22. Of the two ophthalmic lenses in the selected ophthalmic lens set, the one with the lower minimum transmittance is identified. The ophthalmic lens with the lower minimum transmittance is designated as the lens for the dominant eye. Therefore, of the two ophthalmic lenses selected by the selection unit 22, the lens for the dominant eye is identified. Information on the ophthalmic lens set selected by the selection unit 22, including information on which ophthalmic lens is the lens for the dominant eye, is displayed on the display unit 16. The display form of the information on the selected ophthalmic lens set on the display unit 16 is not particularly limited, and may be, for example, images of the ophthalmic lenses that make up the selected ophthalmic lens set, text information on the selected ophthalmic lens set, etc. In addition to this, the display information on the ophthalmic lens set may include, for example, dimensional data such as the size and thickness of the ophthalmic lenses, data indicating the diopter of the ophthalmic lenses, and coating data such as the presence or absence of an anti-reflection layer.

[0012] The selection unit 22 is not particularly limited as long as it can select an ophthalmic lens from the information of the optical article group based on the information from the input unit 14. The selection unit 22 has a search function for known data. For example, a search screen for selecting an ophthalmic lens from the optical article group is displayed on the display unit 16, and the input unit 14 is used to input necessary search conditions into the search screen to select two ophthalmic lenses with different minimum transmittances at wavelengths of 450 to 630 nm from the information of the optical article group. Examples of information from the input unit 14 include one or more pieces of information selected from the group consisting of the corrected visual acuity of the left and right eyes of a user who actually uses the ophthalmic lens, the color of the ophthalmic lens, the shape of the ophthalmic lens, the color difference of the two ophthalmic lenses described below, the size, the power, the presence or absence of a coating layer, and the type of coating layer. The user who actually uses the ophthalmic lens is also simply referred to as the user. Information on the corrected visual acuity of the user's left and right eyes is preferable because it allows automatic determination of which eye is dominant. In this case, the selection unit 22 can assign information on the lens for the dominant eye to the two selected ophthalmic lenses. This allows information about the lens for the dominant eye to be added to the order information, which will be described later.

[0013] The ordering unit 24 has a function of ordering the selected ophthalmic lenses and a transmitting unit (not shown) that transmits order information to the inventory management unit 28. The order information uses, for example, the above-mentioned product code. In this case, the order information is the product codes of the two ophthalmic lenses selected by the selection unit 22. Furthermore, information on the lens for the dominant eye can be added to the order information as described above. The inventory management unit 28 has a receiving unit (not shown) that receives the order information from the ordering unit 24 and a function of searching for the order information from inventory information of ophthalmic lenses. The inventory information uses, for example, the above-mentioned product code. The ordering unit 24 outputs the order information to the inventory management unit 28 based on instruction information from the input unit 14. When the order information is output from the ordering unit 24 to the inventory management unit 28, the inventory information is searched based on the order information. If the selected ophthalmic lenses are in stock, the inventory management unit 28 arranges for the shipment of the selected ophthalmic lenses, for example, to the sender of the order information. In this way, the selected ophthalmic lenses are shipped from inventory, and an actual ophthalmic lens set is provided to the orderer (e.g., the sender of the order information, etc.). In this case, it is specified which of the two selected ophthalmic lenses is the ophthalmic lens for the dominant eye. Therefore, for example, when the ophthalmic lens set is shipped, a label such as a sticker is attached to the ophthalmic lens for the dominant eye, as described below, or a label is attached to the packaging of the ophthalmic lens for the dominant eye. In this way, the ophthalmic lens for the dominant eye is specified in the actual ophthalmic lens set, and an ophthalmic lens set indicated as being an ophthalmic lens for the dominant eye can be provided.

[0014] In the provision device 10, the selection unit 22 selects an ophthalmic lens from the information of the optical article group based on information input from the input unit 14, for example, as follows. First, the user's corrected visual acuity for each of their left and right eyes is input into the input unit 14 (Step 1). This automatically determines which eye is the dominant eye. Next, the user's preferred lens color is input into the input unit 14 (Step 2). In Step 2, the user also inputs any desired color difference between the two ophthalmic lenses. Note that a larger color difference results in a greater effect, but also a greater sense of discomfort. Therefore, if the user does not have a preference for the color difference, a standard value is adopted. As a result, two colors that result in the above-mentioned lens color when mixed in the brain are automatically selected from the optical article group consisting of multiple ophthalmic lenses. Furthermore, based on the corrected visual acuity for each of the left and right eyes, the lens with the lower transmittance in the wavelength range of 450 to 630 nm is automatically determined as the lens for the dominant eye. This obtains lens information for the dominant eye. Next, other information necessary to determine the ophthalmic lens is input into the input unit 14 (Step 3). In step 3, for example, the shape, size, power, presence or absence of a coating layer, and type of coating layer of the ophthalmic lens are input into the input unit 14. Based on the information input into the input unit 14 in steps 1 to 3 above, the selection unit 22 automatically selects an appropriate product code from the group of optical articles. This results in obtaining order information including the product codes of the two selected ophthalmic lenses and information on the lens for the dominant eye.

[0015] In the providing device 10, the information on the optical component group in the storage unit 20 may be linked to inventory information. In this case, the inventory status of the selected ophthalmic lens is displayed on the display unit 16, allowing the orderer to visually grasp the inventory status of the selected ophthalmic lens. The ordering unit 24 and inventory management unit 28 may be publicly known units used in EC sites (electronic commerce), as appropriate. The ordering unit 24 is not necessarily required.

[0016] The providing device 10 may be configured using hardware such as a computer that functionally forms each of the memory unit 20, selection unit 22, ordering unit 24, and control unit 26, or may be a dedicated device in which each unit is configured with a dedicated circuit, or may be configured as a server to be executed on the cloud. For example, only the memory unit 20 may be located on the cloud. Note that the configuration of the providing device 10 is not particularly limited to the configuration shown in FIG. 1. The providing device 10 is not limited to the device used in the selection method described below. Furthermore, the providing device 10 may be configured such that the inventory management unit 28 is located in the processing unit 12.

[0017] <Method for Providing an Ophthalmic Lens Set> In the method for providing an ophthalmic lens set according to the present disclosure, first, an ophthalmic lens set consisting of two ophthalmic lenses with different minimum transmittances in the wavelength range of 450 to 630 nm is selected from a group of optical articles consisting of a plurality of ophthalmic lenses. Hereinafter, the step of selecting an ophthalmic lens set is also referred to as the "selection step." Next, based on the above-described dominant eye information, the ophthalmic lens set is provided by selecting the ophthalmic lens with the lower minimum transmittance from the two selected ophthalmic lenses for the dominant eye. Hereinafter, the step of providing an ophthalmic lens set is also referred to as the "provision step." In the method for providing an ophthalmic lens set according to the present disclosure, the selection step and part of the provision step are performed using the provision device 10 shown in FIG. 1 described above. Implementation of the method for providing an ophthalmic lens set is not limited to the provision device 10 shown in FIG. 1 . The selection step and provision step are described below.

[0018] [Selection Step] In the selection step, for example, based on information from the input unit 14 of the providing device 10 shown in FIG. 1 , the selection unit 22 selects an ophthalmic lens set consisting of two ophthalmic lenses with different minimum transmittances in the wavelength range of 450 to 630 nm from the group of optical articles in the storage unit 20. In this case, the ophthalmic lenses in the group of optical articles are assigned information on their minimum transmittances, and it is identified which ophthalmic lens has the lower minimum transmittance. In other words, the ophthalmic lens for the dominant eye is identified. In the selection step, the ophthalmic lens sets selected from the group of optical articles have different minimum transmittances in the wavelength range of 450 to 630 nm. A specific example of a method for measuring the minimum transmittance of an ophthalmic lens in the above wavelength range in the present disclosure is as follows. Below, an example will be described in which the ophthalmic lens is a meniscus lens having a convex surface and a concave surface, but similar measurements are also possible for other ophthalmic lenses. Using a spectrophotometer (U-4100 manufactured by Hitachi High-Technologies Corporation) equipped with an integrating sphere, reference light is measured in the absence of a sample, and then the spectacle lens is placed with the convex surface facing the incident light side and the transmitted light is measured to measure the spectral transmittance of the spectacle lens. The light beam size at the sample position is approximately 11 mm vertical x 8 mm horizontal, the measurement wavelength range is 380 to 780 nm, the scan speed is 300 nm / min, the sampling interval is 0.50 nm, the number of measurements is 1, and the slit width is 5 nm.

[0019] The selected ophthalmic lens sets are not particularly limited as long as they have different minimum transmittances at wavelengths of 450 to 630 nm measured by the above-mentioned method. However, from the viewpoint of further enhancing the contrast improvement effect of the provided ophthalmic lens set, the difference in minimum transmittance is preferably 0.2% or more, more preferably 0.5% or more, even more preferably 0.7% or more, and particularly preferably 0.9% or more. On the other hand, as described below, the difference in luminous transmittance (wavelengths of 380 to 780 nm) between the two lenses is preferably 30% or less. In order to keep the luminous transmittance within the above-mentioned preferred range, the upper limit of the difference in minimum transmittance is often 30.0% or less, preferably 10.0% or less, more preferably 5.0% or less, and even more preferably 3.0% or less. Furthermore, when the difference in minimum transmittance in the wavelength range of 480 to 600 nm (more preferably 480 to 580 nm) of the ophthalmic lens sets selected in the same manner as the above-mentioned method is calculated, it is preferable that the difference in minimum transmittance be within the above-mentioned preferred range.

[0020] The minimum transmittance of the selected ophthalmic lens set at wavelengths of 450 to 630 nm is preferably 3% or more, more preferably 18% or more, more preferably 43% or more, particularly preferably 80% or more, and most preferably 90% or more. Furthermore, the minimum transmittance of the selected ophthalmic lens set is often less than 100%, preferably 98% or less, more preferably 97% or less, and even more preferably 96% or less. When the minimum transmittance of the selected ophthalmic lens set is within the above range, it is easier to achieve the effect of improving contrast and making objects easier to see while maintaining the brightness of the field of view due to high luminous transmittance. Furthermore, when the minimum transmittance in the above wavelength range is within the above range, high luminous transmittance is more likely to be achieved.

[0021] The ophthalmic lenses included in the ophthalmic lens set are not particularly limited as long as they are ophthalmic lenses, but spectacle lenses or contact lenses are preferred.

[0022] The luminous transmittance of the two ophthalmic lenses included in the ophthalmic lens set is not particularly limited. However, in order to make objects easier to see, the luminous transmittance of each of the two ophthalmic lenses is preferably 3% or more, more preferably 18% or more, even more preferably 43% or more, and particularly preferably 80% or more. As will be described later, fluorescent dyes and phosphorescent dyes can also be used to dye the ophthalmic lenses (spectacles lenses). In this case, the luminous transmittance of the ophthalmic lenses may exceed 100%. The upper limit of the luminous transmittance of the two ophthalmic lenses is often 120% or less, and more often 110% or less. The luminous transmittance of the two ophthalmic lenses may be the same or different. If the difference in luminous transmittance between the two ophthalmic lenses is large, binocular stereoscopic vision may be affected by the Purrich effect. Therefore, the difference in luminous transmittance between the two ophthalmic lenses is preferably 70% or less, more preferably 50% or less, and more preferably 30% or less.

[0023] The luminous transmittance can be measured by the method described above. Alternatively, the spectral transmittance of the ophthalmic lens can be measured using a spectrophotometer (e.g., U-4100 manufactured by Hitachi High-Technologies Corporation), and the luminous transmittance can be calculated from the measured spectral transmittance in accordance with JIS T7333:2018.

[0024] In addition, in the two ophthalmic lenses included in the ophthalmic lens set, L * a * b * It is also preferable that the displayed color difference is greater than 0.23 and less than 33.8. In this disclosure, the color difference between two eyeglass lenses is a color difference ΔE00 that incorporates coefficients corresponding to the values ​​of lightness, saturation, and hue in order to correct the visual non-uniformity of CIELAB. * a * b * The coordinates displayed vary depending on the reference light source. In this disclosure, values ​​calculated using CIE standard illuminant D65 with a 2-degree field of view, which is standard for outdoor daylight, are used as the reference light. When the color difference is within the above range, visual contrast is likely to be improved.

[0025] In order to obtain the effect of improving visual contrast, it is preferable that the colors of the two spectacle lenses have a color difference that can be recognized by humans as different colors. * a * b * The color difference ΔE00 in the display is more preferably 0.4 or more, even more preferably 0.6 or more, and particularly preferably 0.8 or more. On the other hand, if the color difference is too large, binocular rivalry may occur, causing discomfort. Therefore, the color difference ΔE00 is more preferably 20.0 or less, even more preferably 15.0 or less, and particularly preferably 10.0 or less.

[0026] L * a * b * The color difference in the display is the L of each eyeglass lens. * a * b * The coordinates were measured using a spectrophotometer (for example, Hitachi High-Technologies Corporation U-4100) with a D65 light source (field of view 2 degrees) as the reference light, and the L values ​​of the two ophthalmic lenses obtained were * a * b * The color difference ΔE00 can be calculated from the coordinates.

[0027] An example of a specific measurement procedure is shown below. The following describes an example of a meniscus ophthalmic lens having a convex surface and a concave surface, but similar measurements are possible for other ophthalmic lenses. Using a spectrophotometer (U-4100 manufactured by Hitachi High-Technologies Corporation) equipped with an integrating sphere, reference light is measured without a sample. Then, the ophthalmic lens is placed with the convex surface facing the incident light side and the transmitted light is measured, thereby measuring the spectral transmittance of the eyeglass lens. The light beam size at the sample position is approximately 11 mm vertically and 8 mm horizontally, the measurement wavelength range is 380 to 780 nm, the scan speed is 300 nm / min, the sampling interval is 0.50 nm, the number of measurements is 1, and the slit width is 5 nm. Next, from the obtained spectral transmittance, the luminous transmittance Y value and the L value when a D65 light source (field of view 2 degrees) is used as the reference light are calculated using a color calculation program provided in the U-4100. * Value, a * value, b *Finally, the color difference ΔE00 is calculated according to a document describing the calculation method (Gaurav Sharma, et. al., The CIEDE2000 Color-Difference Formula: Implementation Notes, Supplementary Test Data, and Mathematical Observations, COLOR research and application, Volume 30, Number 1, February 2009). 2005) and a spreadsheet distributed by the author of the above-mentioned document (http: / / www2.ec.rochester.edu / ~gsharma / ciede2000 / ), the L values ​​of the two ophthalmic lenses previously measured were calculated. * Value, a * value, b * Calculate from the value.

[0028] Furthermore, the measurement of the spectral transmittance of an ophthalmic lens (spectacles lens) may be performed at the optical center of the ophthalmic lens (spectacles lens). This is also true for non-prescription spectacle lenses, since the lenses have a curved surface. Furthermore, since the optical center and geometric center of a spectacle lens before edging are at the same position, measurement may be performed at the geometric center in the case of a spectacle lens before edging. Furthermore, if the spectacle lens is a progressive lens, measurement is performed at one or more of the prism reference point, distance measurement point, and near measurement point, and it is preferable that the color difference ΔE00 between the two spectacle lenses (progressive lenses) at each position is greater than 0.23 and less than 33.8. Note that the more preferable range of the color difference ΔE00 is as described above.

[0029] Here, the colors of the two ophthalmic lenses are not particularly limited as long as they satisfy the above-mentioned minimum transmittance relationship. In the case where the color difference ΔE00 is greater than 0.23 and less than 33.8 while satisfying the above-mentioned minimum transmittance relationship, for example, a purple-blue ophthalmic lens may be toned so that the color difference ΔE00 between the two spectacle lenses exceeds 0.23. According to the above-mentioned aspect, it is easier to improve the visual contrast. In addition, the colors can be selected according to the preferences of the wearer of the ophthalmic lens set. Since the colors of the two ophthalmic lenses are mixed in the brain to form an intermediate color, the colors of the two ophthalmic lenses are selected according to the L ＊ a ＊ b ＊ In the color system, it is preferable that they are located directly opposite the target color. Furthermore, it is also preferable that the colors of the two ophthalmic lenses are in a physically complementary color relationship. This is because when the images received from the left and right eyes are mixed in the brain, they become achromatic (gray) and the sense of incongruity is reduced. Note that physically complementary colors are colors that are complementary (have a mutually complementary relationship), and L ＊ a ＊ b ＊ In the color system, it is a color that is located directly opposite the origin. Specifically, for example, as a color combination of two ophthalmic lenses, it is preferable to select two colors that are physically complementary, such as red and cyan, green and magenta, or blue and yellow. Among them, from the viewpoint of reducing the influence of color when viewed with one eye, such as when blinking, it is preferable to select a yellow-based color that has a strong psychological stimulus, i.e., b ＊ It is preferable not to use colors with a large positive value, and it is more preferable to select a color combination of two eyeglass lenses from reddish colors, blueish colors, greenish colors, and intermediate colors thereof. ＊ a ＊ b ＊ In the color system, a ＊ Colors with a large positive value are greenish colors. ＊ Colors with a large negative value are blue-based colors. ＊ The color has a large negative value.

[0030] In addition, both of the two ophthalmic lenses may be chromatic, or one ophthalmic lens may be chromatic (hereinafter also referred to as a colored lens) and the other ophthalmic lens may be achromatic (hereinafter also referred to as a clear lens). That is, the ophthalmic lens set provided by the present disclosure has at least one colored lens.

[0031] Furthermore, the coloring of an ophthalmic lens may be uniform across the entire lens or may have a distribution. For example, by darkening the color of the center of the lens, where the user's gaze is likely to be drawn, the color difference between the two ophthalmic lenses can be maintained, while by lightening the color of the peripheral portion of the lens, where the user's gaze is less likely to be drawn, the color impression when viewed by others can be weakened. Here, the center of the lens, where the user's gaze is likely to be drawn, is determined by the user of the ophthalmic lens and is appropriately selected from the geometric center, optical center, etc. Furthermore, when the ophthalmic lens is a spectacle lens, the center of the lens also varies depending on the shape of the spectacle frame. Specifically, in the present disclosure, when the ophthalmic lens is a spectacle lens, the above-mentioned method for measuring the minimum transmittance and color difference in the wavelength range are performed using the geometric center of a 75 mm diameter circular lens (specialty lens before edging). In this case, the geometric center and the optical center are the same. However, after the lens is edged and mounted in the spectacle frame, the geometric center and the optical center differ, so it is preferable to measure the color difference at the optical center.

[0032] The two ophthalmic lenses may be ophthalmic lenses for vision correction with a predetermined power, ophthalmic lenses with no power, or lenses for protective glasses. They may also be progressive lenses with variable power within a single lens. Alternatively, they may be lenses for magnifying glasses (eyeglass loupes). The two ophthalmic lenses may also be lenses that reduce part of ultraviolet and / or visible light (e.g., eyeglass lenses for sunglasses). Alternatively, the ophthalmic lens set may be a separate ophthalmic lens set that can be attached to eyeglasses or the like. A separate lens set from eyeglasses is also called a clip-on.

[0033] For an ophthalmic lens set that satisfies the above requirements, the method for providing an ophthalmic lens set of the present disclosure provides an ophthalmic lens set with the lens with the lower minimum transmittance for the dominant eye. Providing an ophthalmic lens with the lower minimum transmittance in a predetermined wavelength range for the dominant eye provides the effect of enabling a user to easily see objects when using the ophthalmic lens set. While the reason for this effect is not entirely clear, it is presumed to be as follows: One of the ophthalmic lenses in the ophthalmic lens set has a lower minimum transmittance in the wavelength range of 450 to 630 nm than the other ophthalmic lens. This wavelength range includes blue light, which is prone to scattering, and green and yellow light, which are prone to causing glare. When a user views an object with their dominant eye through an ophthalmic lens (dominant ophthalmic lens) with a lower transmittance for light in the wavelength range, light scattering and glare are reduced, allowing the object to be seen with high contrast. However, coloring of the field of view can cause discomfort to the user. In the non-dominant eye, the user views the object through an ophthalmic lens (non-dominant eye lens) with a higher minimum transmittance in the above wavelength range, resulting in less coloring of the field of view than the dominant eye, or a different coloring than the dominant eye. Here, signals obtained through the dominant eye and the non-dominant eye are fused in the brain and recognized by the user. By placing a dominant eye lens in the dominant eye and a non-dominant eye lens in the non-dominant eye, the user can view the object with high contrast through the dominant eye while reducing coloring throughout the entire field of view. Furthermore, for example, if the colors of the dominant eye lens and the non-dominant eye lens are physically complementary, the resulting color becomes achromatic when fused in the brain, further reducing coloring throughout the entire field of view. Therefore, using the ophthalmic lenses provided by the method for providing an ophthalmic lens set of the present disclosure is believed to make it easier to see objects while reducing discomfort caused by coloring in the field of view.

[0034] Specific examples of ophthalmic lenses will be described in detail later.

[0035] [Providing Step] In the method for providing an ophthalmic lens set of the present disclosure, for the ophthalmic lens set selected in the above selection step, the ophthalmic lens set with the lowest minimum transmittance is provided as the ophthalmic lens set for the dominant eye. In this case, which ophthalmic lens is for the dominant eye is identified in the above selection step. For this reason, for example, when shipping the ophthalmic lens set, a label such as a sticker is attached to the ophthalmic lens for the dominant eye, as described below, or a label is attached to the packaging of the ophthalmic lens for the dominant eye. This makes it possible to identify the ophthalmic lens for the dominant eye in the actual ophthalmic lens set, and an ophthalmic lens set indicated as being an ophthalmic lens for the dominant eye can be provided. The method for providing the ophthalmic lens set is not particularly limited, and for example, the ophthalmic lens may be labeled as being for the dominant eye, or the packaging of the ophthalmic lens may be labeled as being for the dominant eye.

[0036] A specific method for indicating that an ophthalmic lens is for the dominant eye is to attach a label such as a sticker to the ophthalmic lens to indicate that it is for the dominant eye. The content of the indication that the ophthalmic lens is for the dominant eye is not particularly limited as long as it can be distinguished from ophthalmic lenses that are not for the dominant eye, and various content may be used. For example, the words "for the dominant eye" or the like may be displayed, or specific symbols, marks, etc. may be used to indicate that the ophthalmic lens is for the dominant eye.

[0037] A specific example of a method for indicating on the packaging of an ophthalmic lens that the lens is for the dominant eye is to attach a label to the packaging of the ophthalmic lens to indicate that the lens is for the dominant eye. The content of the indication that the lens is for the dominant eye is the same as that described above.

[0038] Furthermore, if the two ophthalmic lenses are distinguishable by their appearance such as color, the ophthalmic lens set may be provided with a label indicating that the lens for the dominant eye is a specific color on the packaging of the ophthalmic lens set.If the two ophthalmic lenses are distinguishable by measurement using a specific device, the ophthalmic lens set may be provided with a label indicating how to identify the lens for the dominant eye on the packaging of the ophthalmic lens set.

[0039] The above-mentioned marking can be provided in various ways. For example, the marking may be printed on the ophthalmic lens or the packaging of the ophthalmic lens, or the packaging of the ophthalmic lens set, or may be a mark affixed by processing, or a sticker or the like may be attached, or an instruction manual may be attached. The packaging of the ophthalmic lens and the packaging of the ophthalmic lens set are not limited to containers or the like that directly package the ophthalmic lenses, but also include outer boxes or the like that house the packaged ophthalmic lenses.

[0040] When the ophthalmic lens set is a spectacle lens set, the spectacle lens set provided may be beveled to fit the shape of the spectacle frame to which it is applied.

[0041] <Ophthalmic Lens Set> The ophthalmic lens set of the present disclosure is an ophthalmic lens set consisting of two ophthalmic lenses with different minimum transmittances in the wavelength range of 450 to 630 nm, and based on dominant eye information, the one of the two ophthalmic lenses with the lower minimum transmittance is displayed as being for the dominant eye. The minimum transmittance and the display of the dominant eye are as described above, so further explanation will be omitted. The ophthalmic lenses in the ophthalmic lens set are not particularly limited as long as they are ophthalmic lenses, but are preferably spectacle lenses or contact lenses. Below, the ophthalmic lenses in the ophthalmic lens set are described as spectacle lenses, and spectacles to which spectacle lenses are applied will be described.

[0042] An example of an ophthalmic lens set is the spectacle lens set 32 ​​used in spectacles 30 shown in Fig. 2. Specifically, the spectacle lens set 32 ​​includes a right-eye spectacle lens 34 and a left-eye spectacle lens 35. In Fig. 2, the spectacles 30 include the spectacle lens set 32 ​​consisting of the right-eye spectacle lens 34 and the left-eye spectacle lens 35, and a spectacle frame 36 to which the right-eye spectacle lens 34 and the left-eye spectacle lens 35 are attached. In other words, the spectacle lens set 32 ​​consisting of the right-eye spectacle lens 34 and the left-eye spectacle lens 35 is the ophthalmic lens set of the present disclosure. The spectacle lens set 32 ​​satisfies the above-mentioned requirements regarding minimum transmittance.

[0043] The eyeglass frame 36 is a conventionally known eyeglass frame having a pair of lens frames in which the right-eye eyeglass lens 34 and the left-eye eyeglass lens 35 are respectively mounted, and temples for hanging the eyeglass frame on the user's ears.

[0044] In the eyeglass lens set (ophthalmic lens set) 32 of the present disclosure, the L between the eyeglass lens 34 for the right eye and the eyeglass lens 35 for the left eye is * a * b * The color difference in the display is preferably greater than 0.23 and less than 33.8. The color difference is as described above.

[0045] The spectacle lenses included in the spectacle lens set (ophthalmic lens set) will be described in detail below.

[0046] The lens substrate for the spectacle lens may be plastic or glass. To color the plastic substrate, a colorant may be mixed into the plastic substrate during curing, or at least one surface of the cured plastic substrate may be dyed with a predetermined dye solution. Plastic substrates dyed with a dye solution are preferred because they have a uniform color regardless of the thickness of the substrate. The entire lens can also be colored by providing a film containing a colorant on an uncolored plastic lens (clear lens) or by providing an interference film that transmits only specific wavelengths. Similarly, for glass substrates, the spectacle lens itself, including the functional film, can be colored by mixing a colorant into the glass itself, providing a film containing a colorant on an uncolored glass lens (clear lens), or by providing an interference film that transmits only specific wavelengths.

[0047] Examples of resins contained in the plastic substrate that is the lens substrate include acrylic resin, thiourethane resin, methacrylic resin, allyl resin, episulfide resin, polycarbonate resin, polyurethane resin, polyester resin, polystyrene resin, polyethersulfone resin, polymethylpentene resin, diethylene glycol bisallyl carbonate resin, polyvinyl chloride resin, and sulfur-containing copolymers. In this embodiment, the refractive index of the plastic substrate at a wavelength of 546.1 nm is preferably in the range of 1.50 to 1.74, for example.

[0048] In the present disclosure, the dyeing solution used to dye plastic substrates preferably contains a dye, a surfactant, and a solvent (e.g., water). Furthermore, one dyeing solution may be a dyeing solution containing one type of dye, i.e., a dye of one color, or may be a mixed dyeing solution containing two or more types of dyes, i.e., dyes of two or more colors. That is, when dyeing plastic substrates, multiple dyeing solutions each having a different color may be used, or a mixed dyeing solution prepared by blending dyes of two or more colors may be used. The mixed dyeing solution may be prepared by mixing multiple dyeing solutions of different colors, or may be prepared by blending multiple dyes in advance and using the blended dye.

[0049] The dye may be any dye as long as it can be adjusted to satisfy the above-mentioned requirements for the minimum transmittance of the two spectacle lenses. Examples of the dye include disperse dyes, reactive dyes, direct dyes, composite dyes, acid dyes, metal complex dyes, vat dyes, sulfide dyes, fluorescent dyes, phosphorescent dyes, dyes for resin coloring, and other functional dyes. Examples of the dye include yellow (Y) dyes, red (R) dyes, blue (B) dyes, brown dyes, violet dyes, orange dyes, and black dyes. From the viewpoint of reducing color changes in the spectacle lenses due to light sources, it is preferable to use two or more types of dyes in combination rather than using only one type.

[0050] Examples of yellow dyes include Kayaron Polyester Yellow AL, Kayalon Microester Yellow AQ-LE, Kayalon Microester Yellow C-LS, Kayaron Microester Yellow 5L-E, Kayaron Polyester Yellow 5R-SE(N)200, and Kayaron Polyester Yellow BRL-S 200 (manufactured by Nippon Kayaku Co., Ltd.), Kiwalon polyester Yellow ESP eco, Kiwalon polyester Yellow KN-SE 200 (manufactured by Kiwa Chemical Industry Co., Ltd.), FSP-Yellow PE (manufactured by Futaba Sangyo Co., Ltd.), and Dianix Yellow (manufactured by DyStar Japan Co., Ltd.).

[0051] Examples of red dyes include Kayalon polyester red (Kayalon Microester Red) AUL-S, Kayalon Microester Red 5L-E, Kayalon Microester Red C-LS conc, Kayalon Microester Red DX-LS, Kayalon polyester Red AN-SE, Kayalon Polyester Red B-LE, Kayaron Polyester Rubine GL-SE 200 (manufactured by Nippon Kayaku Co., Ltd.), Kiwalon polyester Red ESP, Kiwalon polyester Red KN-SE (manufactured by Kiwa Chemical Industry Co., Ltd.), FSP-Red BL (manufactured by Futaba Sangyo Co., Ltd.), and Dianix Red (manufactured by DyStar Japan Co., Ltd.).

[0052] Examples of blue dyes include Kayalon Polyester Blue AUL-S dye (manufactured by Nippon Kayaku Co., Ltd.), Dianix Blue AC-E (manufactured by Dystar Japan Co., Ltd.), Kiwalon Polyester Blue ESP, Kiwalon Polyester Blue KN-SE (manufactured by Kiwa Chemical Co., Ltd.), Kayalon Microester Blue AQ-LE, Kayaron Microester Blue 5L-E, Kayalon Microester Blue C-LS conc, Kayalon Microester Blue DX-LS conc, Kayalon Polyester Blue AN-SE, Kayaron Polyester Blue AUL-S(N) (manufactured by Nippon Kayaku Co., Ltd.), and FSP-Blue AUL-S (manufactured by Futaba Sangyo Co., Ltd.).

[0053] The surfactant is not particularly limited as long as it can uniformly disperse the dye in a solvent such as water, etc. Examples of the surfactant include ionic surfactants (e.g., anionic surfactants, cationic surfactants, etc.) and nonionic surfactants.

[0054] Examples of the solvent include water and organic solvents, such as alcohol-based solvents, ketone-based solvents, ether-based solvents, ester-based solvents, hydrocarbon-based solvents, halogenated hydrocarbon-based solvents, amide-based solvents, sulfone-based solvents, and sulfoxide-based solvents.

[0055] The dyeing solution may contain various additives such as a pH adjuster, a viscosity adjuster, a leveling agent, a matting agent, a stabilizer, an ultraviolet absorber, and an antioxidant, as required.

[0056] The content of the dye contained in the dye solution is preferably 0.001 to 10% by mass, more preferably 0.01 to 5% by mass, based on the total mass of the dye solution. The content of the surfactant contained in the dye solution is preferably 0.01 to 10% by mass, more preferably 0.05 to 5% by mass, based on the total mass of the dye solution.

[0057] Examples of methods for dyeing at least one surface of a plastic substrate to obtain a colored lens include the following three methods: (1) A method in which a dyeing solution is coated on the surface of a plastic substrate and heated to dye the surface of the plastic substrate (coating method); (2) A method in which a plastic substrate is immersed in a heated dyeing solution to dye the surface of the plastic substrate (dip method); and (3) A method in which a sublimable dye is coated on a transfer medium, and the plastic substrate is placed near the transfer medium and heated to dye the surface of the plastic substrate (sublimation dyeing method). Of these three methods, the coating method (1) is preferred in that it requires a small amount of dyeing solution and can reduce production costs. On the other hand, the dip method (2) is preferred in that it is easy to apply uniformly, and the sublimation dyeing method (3) is preferred in that it is easy to pattern, so the methods can be selected according to the application. These methods may be used alone or in combination.

[0058] Examples of the method for applying the dyeing liquid to the plastic substrate in the above-mentioned coating method include ordinary coating methods such as brush coating, dipping, spin coating, roll coating, spray coating, flow coating, and inkjet coating. The coating may be applied to one side of the plastic substrate, or to both sides to further increase the dyeing density. The coating thickness of the dyeing liquid on the plastic substrate can be adjusted appropriately and can be, for example, in the range of 0.01 to 10 μm.

[0059] When dyeing (coloring) a plastic substrate using the coating method, it is preferable to coat the surface of the plastic substrate with a dye solution and then perform a heat treatment to allow the dye in the dye solution to penetrate and diffuse into the surface of the plastic substrate. Heating conditions for the plastic substrate coated with the dye solution preferably include a heating temperature of 70 to 180°C and a heating time of 10 to 180 minutes. Heating methods include air oven heating, far-infrared radiation heating, and UV radiation heating. When dyeing (coloring) a plastic substrate with a gentle concentration gradient using the coating method, the dye solution is coated on the lens, and then the coating liquid surface (dyeing liquid surface) is heated while gradually changing the heating area, allowing an amount of dye corresponding to the concentration gradient to penetrate into the plastic substrate.

[0060] The plastic substrate may be coated with the dyeing solution, the coated plastic substrate may be heat-treated, and then the plastic substrate may be washed. The method for washing the plastic substrate is not particularly limited as long as it can remove the coating layer (applied dyeing solution) from the surface of the plastic substrate, but wiping with an organic solvent or washing with an alkaline cleaner is preferred.

[0061] When dyeing a plastic substrate by the above-mentioned dip method, the plastic substrate is immersed in a dyeing solution, and the dye in the dyeing solution can penetrate and diffuse from the surface of the plastic substrate. In dyeing by the dip method, it is preferable to immerse the plastic substrate in a dyeing solution heated to 80 to 95°C. After immersion, the plastic substrate may be washed. Examples of methods for washing the plastic substrate include wiping with a solvent.

[0062] The spectacle lens may include a functional film. The functional film is a film disposed on a lens substrate such as the above-mentioned plastic substrate. Examples of the functional film include a polarizing film, a photochromic film, a primer film, a hard coat film, an interference film such as an anti-reflection film, and a water- and oil-repellent film. When the spectacle lens (ophthalmic lens) has a functional film disposed on the lens substrate as described above, the entire spectacle lens including the functional film satisfies the above-mentioned minimum transmittance requirement. Furthermore, even in an embodiment having a functional film, it is preferable that the above-mentioned color difference relationship be satisfied.

[0063] The primer film is a layer used to improve the adhesion between the components arranged on both sides of the film. The material constituting the primer film is not particularly limited, and known materials can be used, for example, resins are mainly used. The type of resin used is not particularly limited, and examples thereof include polyurethane resin, epoxy resin, phenolic resin, polyimide resin, polyester resin, bismaleimide resin, and polyolefin resin, with polyurethane resin being preferred. The method for forming the primer film is not particularly limited, and known methods can be used, for example, a method of applying a primer film-forming composition containing a predetermined resin onto an eyeglass lens and, if necessary, subjecting it to a curing treatment to form a primer film can be mentioned.

[0064] The hard coat film is a layer that imparts scratch resistance to the eyeglass lens. The hard coat film preferably exhibits a pencil hardness of "H" or higher according to the test method specified in JIS K5600.

[0065] As the hard coat film, a known hard coat film can be used, for example, an organic hard coat film, an inorganic hard coat film, and an organic-inorganic hybrid hard coat film can be mentioned, and for example, in the field of eyeglass lenses, an organic-inorganic hybrid hard coat film is commonly used. The method for forming the hard coat film is not particularly limited, and examples thereof include a method in which a hard coat film-forming composition is applied to an eyeglass lens to form a coating film, and the coating film is subjected to a curing treatment such as a light irradiation treatment.

[0066] The structure of the antireflective film is not particularly limited, and may be a single-layer structure or a multilayer structure. An inorganic antireflective film is preferred as the antireflective film. An inorganic antireflective film is an antireflective film composed of an inorganic compound. In the case of a multilayer structure, a structure in which low-refractive-index layers and high-refractive-index layers are alternately stacked is preferred. Examples of materials constituting the high-refractive-index layers include oxides of titanium, zirconium, aluminum, niobium, tantalum, or lanthanum. Examples of materials constituting the low-refractive-index layers include oxides of silica. The method for producing the antireflective film is not particularly limited, and examples include dry methods such as vacuum deposition, sputtering, ion plating, ion-beam assisted deposition, and chemical vapor deposition (CVD).

[0067] The eyeglasses 30 including the eyeglass lens set 32 ​​of the above example can be manufactured by a manufacturing method including a step of manufacturing eyeglasses using, for example, two eyeglass lenses (eyeglass lens set 32) with different minimum transmittances at wavelengths of 450 to 630 nm, the eyeglass lens with the lower minimum transmittance as the eyeglass lens for the dominant eye based on dominant eye information. Since the eyeglasses manufactured by the above manufacturing method have the eyeglass lens for the dominant eye positioned on the side of the user's dominant eye, when the user wears the eyeglasses, for the reasons described above, the effect of making it easier to see objects is achieved.

[0068] In the above example, the ophthalmic lenses included in the ophthalmic lens set are configured as a spectacle lens for the right eye and a spectacle lens for the left eye. However, this is not limited thereto, and the ophthalmic lenses may be contact lenses, as described above. That is, the ophthalmic lens set may include a contact lens for the right eye and a contact lens for the left eye, and the right and left contact lenses may have different minimum transmittances at wavelengths of 450 to 630 nm. Even when the ophthalmic lens set is made up of contact lenses, it is preferable that the above-mentioned color difference relationship be satisfied. In an ophthalmic lens set including a contact lens for the right eye and a contact lens for the left eye, the above-mentioned minimum transmittance relationship is satisfied, and when a user uses the ophthalmic lens set, the effect of being able to easily see objects is achieved. Furthermore, the two contact lenses may be contact lenses for vision correction with a predetermined power, or may be contact lenses without a power.

[0069] <Method for manufacturing ophthalmic transmission optical article> The ophthalmic transmission optical article manufactured by the manufacturing method of the present disclosure has a first region and a second region, and the first region and the second region have different minimum transmittances at wavelengths of 450 to 630 nm. The region with a lower minimum transmittance is positioned on the dominant eye side based on dominant eye information. The dominant eye information is as described above. An example of the above-described ophthalmic transmission optical article is an ophthalmic transmission optical article 52 used in goggles 50 shown in FIG. 3. In FIG. 3, the goggles 50 include the ophthalmic transmission optical article 52, a frame 56 to which the ophthalmic transmission optical article 52 is attached, and a band 58 for attaching the goggles 50 to the user's head. The frame 56 and the band 58 are similar to frames and bands used in conventionally known goggles.

[0070] The ocular transmissive optical article 52 has a right-eye region 53 (first region) and a left-eye region 54 (second region). In the example shown in FIG. 3 , when viewed from the user's side, the region to the right of the center of the ocular transmissive optical article 52 is the right-eye region 53, and the region to the left of the center is the left-eye region 54. The right-eye region 53 and the left-eye region 54 have different minimum transmittances at wavelengths of 450 to 630 nm. Furthermore, based on information about the user's dominant eye, the region with the lower minimum transmittance is arranged on the dominant eye side of the user. Arranging the region with the lower minimum transmittance on the dominant eye side is thought to have the effect of making it easier to see objects, for the same reason as the ophthalmic lens described above.

[0071] In addition, the L between the right eye region 53 and the left eye region 54 * a * b * Although the color difference in the display is not particularly limited, it is preferably greater than 0.23 and less than 33.8. When the color difference between the right-eye region 53 and the left-eye region 54 satisfies the above range, the effect of improving visual contrast can be obtained. The more preferable range of the color difference is as described above.

[0072] The method for measuring the minimum transmittance of the right-eye region 53 and the left-eye region 54, the preferred range of the difference in minimum transmittance, and the preferred range of luminous transmittance, etc. are the same as the preferred ranges for the right-eye spectacle lens 34 and the left-eye spectacle lens 35 of the spectacle lens set 32. In addition, the preferred ranges for the luminous transmittance and color difference of the right-eye region 53 and the left-eye region 54 are the same as the preferred ranges for the color difference of the right-eye spectacle lens 34 and the left-eye spectacle lens 35 of the spectacle lens set 32 ​​described above.

[0073] 3, the ocular transmission type optical article 52 is configured to include the right eye region 53 and the left eye region 54, but is not limited thereto, and at least a part of the ocular transmission type optical article 52, including a region corresponding to the visual field of the right eye of the user, may be the right eye region 53, and at least a part of the ocular transmission type optical article 52, including a region corresponding to the visual field of the left eye of the user, may be the left eye region 54. In other words, the ocular transmission type optical article 52 may have a region other than the right eye region 53 (first region) and the left eye region 54 (second region).

[0074] The ocular transmission optical article 52 is, for example, a plastic substrate having at least one of a region to become the right eye region 53 and a region to become the left eye region 54 colored. That is, the ocular transmission optical article 52 may have both the right eye region 53 and the left eye region 54 colored, or one of the right eye region 53 and the left eye region 54 colored and the other achromatic.

[0075] The material of the plastic substrate of the ophthalmic transmission type optical article 52 can be the same as the lens substrate described in the above-mentioned ophthalmic transmission type optical article set (ophthalmic lens set) 32. In addition, the method of coloring the plastic substrate of the ophthalmic transmission type optical article 52 can be the same as the coloring method of the above-mentioned ophthalmic transmission type optical article set (ophthalmic lens set). In addition, the dyeing liquid used for dyeing when coloring by dyeing can be the same as the dyeing liquid described in the above-mentioned ophthalmic transmission type optical article set (ophthalmic lens set) 32.

[0076] A method for dyeing the surface of a plastic substrate to obtain an ocular transmissive optical article 52 having a right eye region 53 and a left eye region 54 may involve, for example, masking a portion that will become one of the regions, dyeing the portion that will become the other region in a desired color using a coating method, a dipping method, a sublimation dyeing method, or the like similar to the dyeing method described above, and then masking the other dyed region, and dyeing the portion that will become one of the regions in another desired color using a similar method.

[0077] An ocular transmissive optical article 52 having a right-eye region 53 (first region) and a left-eye region 54 (second region), in which the first and second regions have different minimum transmittances at wavelengths of 450 to 630 nm, can be manufactured by, for example, a manufacturing method including a step of manufacturing an ocular transmissive optical article by arranging the region with the lower minimum transmittance on the dominant eye side of the first and second regions based on dominant eye information. Because the transmissive optical article manufactured by the above manufacturing method has the region for the dominant eye arranged on the dominant eye side of the user, when the user uses the transmissive optical article, it has the effect of making it easier to see objects for the reasons described above.

[0078] <Method for Manufacturing Binoculars> Binoculars manufactured using the manufacturing method of the present disclosure have a first optical system and a second optical system, and the first optical system and the second optical system have different minimum transmittances in the wavelength range of 450 to 630 nm. The optical system with the lower minimum transmittance is positioned closer to the dominant eye based on dominant eye information. The dominant eye information is as described above. The binoculars may be a binocular telescope or a binocular microscope. An example of the binoculars is the binocular telescope 60 shown in FIG. 4. Specifically, the binocular telescope 60 includes a right-eye light-shielding tube 61R and a left-eye light-shielding tube 61L. The right-eye light-shielding tube 61R includes, in order from the user's side, a right-eye eyepiece lens group 62R, a right-eye roof prism 64R, a right-eye auxiliary prism 66R, and a right-eye objective lens group 68R. The left-eye light-shielding tube 61L includes, in order from the user side, a left-eye eyepiece group 62L, a left-eye roof prism 64L, a left-eye auxiliary prism 66L, and a left-eye objective lens group 68L.

[0079] In the binocular telescope 60, the right-eye eyepiece group 62R, the right-eye roof prism 64R, the right-eye auxiliary prism 66R, and the right-eye objective lens group 68R correspond to the optical system for the right eye, while the left-eye eyepiece group 62L, the left-eye roof prism 64L, the left-eye auxiliary prism 66L, and the left-eye objective lens group 68L correspond to the optical system for the left eye. In other words, the binocular telescope 60 includes an optical system for the left eye and an optical system for the right eye (a first optical system and a second optical system). Here, based on information about the user's dominant eye, an optical system with a low minimum transmittance in the wavelength range of 450 to 630 nm is positioned on the side of the user's dominant eye. Positioning the optical system with the low minimum transmittance on the side of the dominant eye is thought to have the effect of making it easier to see objects for the same reasons as the ophthalmic lenses described above.

[0080] It is also preferable that the color difference between the entire optical system for the right eye and the entire optical system for the left eye in the binocular telescope 60 is greater than 0.23 and less than 33.8. The more preferable range of the color difference is as described above.

[0081] In the binocular telescope 60, there are no particular limitations on the method for constructing an optical system in which the optical system for the right eye and the optical system for the left eye have different minimum transmittances. Examples include coloring at least one of the lenses and prisms constituting each optical system. For example, the minimum transmittances may be different between the eyepiece lens for the right eye and the eyepiece lens for the left eye, between the objective lens for the right eye and the objective lens for the left eye, between the roof prism for the right eye and the roof prism for the left eye, or between the auxiliary prism for the right eye and the auxiliary prism for the left eye. In other words, the above-described ophthalmic lens set may be used as the lenses constituting the optical system of a binocular telescope. Note that two or more of the lenses and prisms constituting each optical system may be colored, or all of the lenses and prisms may be colored. Furthermore, both the optical system for the right eye and the optical system for the left eye may be chromatic, or one may be chromatic and the other achromatic. The preferred range of the minimum transmittance difference between the above optical systems is the same as the range described above.

[0082] There are no particular limitations on the method for coloring the eyepiece lenses or objective lenses used in the binoculars, and the same methods as those for spectacle lenses can be used. The same substrates as those for spectacle lenses can be used as the base materials for the eyepiece lenses and objective lenses. There are also no particular limitations on the method for coloring the auxiliary prisms or roof prisms used in the binoculars, and the same methods as those for spectacle lenses can be used. For example, known optical glass can be used as the base materials for the auxiliary prisms and roof prisms.

[0083] The binocular telescope 60 may include known components in addition to the components shown in FIG. 4 . Examples of known components include an intermediate lens and an optical filter. These components may also be considered components of an optical system. Furthermore, while the binocular telescope 60 shown in FIG. 4 uses a right-eye roof prism 64R, a right-eye auxiliary prism 66R, a left-eye roof prism 64L, and a left-eye auxiliary prism 66L, the binoculars of the present disclosure may use a pair of right-eye Porro prisms and a pair of left-eye Porro prisms instead of the above prisms.

[0084] The method for measuring the minimum transmittance of the optical system for the right eye and the optical system for the left eye, the preferred range of the difference in minimum transmittance, and the preferred range of luminous transmittance, etc. are the same as the preferred ranges for the right-eye spectacle lens 34 and the left-eye spectacle lens 35 of the spectacle lens set 32. In addition, the preferred ranges of luminous transmittance of the optical system for the right eye and the left-eye spectacle lens 34 are the same as the preferred ranges of color difference between the right-eye spectacle lens 34 and the left-eye spectacle lens 35 of the spectacle lens set 32 ​​described above.

[0085] A binocular telescope 60 having an optical system for the right eye and an optical system for the left eye (a first optical system and a second optical system), the first optical system and the second optical system having different minimum transmittances at wavelengths of 450 to 630 nm, can be manufactured, for example, by a manufacturing method including a step of manufacturing binoculars by arranging the optical system with the lower minimum transmittance on the dominant eye side of the first optical system or the second optical system based on dominant eye information. Because the binoculars manufactured by the above manufacturing method have the optical system for the dominant eye arranged on the dominant eye side of the user, when the user uses the binoculars, for the reasons described above, the effect is achieved that the object is easier to see.

[0086] 4 shows an embodiment of a binocular telescope 60, the binoculars of the present disclosure may also be a binocular microscope. In the binocular microscope of the present disclosure, as in the binocular telescope described above, a function to provide a predetermined color difference can be added to any component of the optical system for the right eye and the optical system for the left eye, among the optical systems from the objective lens to the eyepiece lens. Note that there are binocular microscopes with various configurations, such as stereomicroscopes, industrial microscopes, and biological microscopes, and the present disclosure can be applied to any of these.

[0087] Hereinafter, the ophthalmic lens set and the like of the present disclosure will be described in more detail with reference to examples and comparative examples, but the present embodiment is not limited in any way by these examples.

[0088] <Production of eyeglass lenses> Colored lenses (eyeglass lenses) were obtained by the following procedure.

[0089] [Preparation of dyeing solution] First, a dyeing solution was prepared using a dye, a surfactant, and pure water. Pure water (1000 parts by mass) was placed in a container, and 2.0 parts by mass of FSP YELLOW FL dye (manufactured by Futaba Sangyo Co., Ltd.) and 1.0 part by mass of Nikka Sunsalt #7000 (trade name, manufactured by Nicca Chemical Co., Ltd.) were added as yellow dyes to prepare dyeing solution 1. Pure water (1000 parts by mass) was placed in a container, and 2.0 parts by mass of FSP BLUE AULS dye (manufactured by Futaba Sangyo Co., Ltd.) and 1.0 part by mass of Nikka Sunsalt #7000 were added as blue dyes to prepare dyeing solution 2. Pure water (1000 parts by mass) was placed in a container, and 2.0 parts by mass of FSP RED BL dye (manufactured by Futaba Sangyo Co., Ltd.) and 1.0 part by mass of Nikka Sunsalt #7000 were added as red dyes to prepare dyeing solution 3.

[0090] [Dyeing of Plastic Lens and Preparation of Tinted Lens 1] Next, the three prepared dyeing solutions 1, 2, and 3 were each heated to 90°C, and a plastic lens with a refractive index of 1.60 (Nikon Lite 3AS, manufactured by Nikon-Essilor, size 75φ, center thickness 2 mm, zero power) was immersed in each of the dyeing solutions 1, 2, and 3 to prepare a pale reddish-purple lens. Next, on the surface of the obtained colored lens, a urethane-based primer film (coating film for improving impact resistance) with a thickness of about 1 μm, a silicone-based hard coating film for improving scratch resistance with a thickness of about 2 μm, a multilayer antireflection film formed of inorganic oxides with a thickness of about 0.3 μm by vacuum deposition, and a fluorine-based water- and oil-repellent film were disposed in this order, thereby obtaining the target colored lens 1.

[0091] [Dyeing of Plastic Lenses and Preparation of Tinted Lenses 2 to 4] Tinted lenses of various color tones were prepared in the same manner as for Tinted Lens 1, except that the plastic lens having a refractive index of 1.60 was immersed in one or more of the three dyeing solutions 1, 2, and 3 that were the same as those used for Tinted Lens 1, and the immersion time was adjusted. A urethane primer film, a silicone-based hard coat film for improving scratch resistance, a multilayer antireflection film, and a water- and oil-repellent film were disposed on the surface of the obtained colored lens in this order, as in Tinted Lens 1, to obtain the target Tinted Lenses 2 to 4. The color of each lens and the minimum transmittance at wavelengths of 450 to 630 nm are shown in the table below.

[0092] <Lens Evaluation> The spectral transmittance of each of the produced colored lenses was measured by the method described above using a Hitachi High-Technologies U-4100 spectrophotometer. Partially enlarged views of the spectral transmittance curves of each colored lens are shown in Figures 5 and 6. The minimum transmittance of each colored lens in the wavelength range of 450 to 630 nm is also shown in Table 1. The L * a * b * The coordinates were measured using a Hitachi High-Technologies U-4100 spectrophotometer in the manner described above. At this time, a D65 light source (2-degree field of view) was used as the reference light. * a * b * The coordinates are shown in Table 1.

[0093]

[0094] <Evaluation> The dominant ophthalmic lens and the non-dominant ophthalmic lens were combined in the combinations shown in Table 2 below to prepare the ophthalmic lens sets of Examples 1 and 2. The lens color of the dominant ophthalmic lens was recorded to distinguish it from the non-dominant ophthalmic lens. Furthermore, the same type of colored lens was used as shown in Table 2 below to prepare the ophthalmic lens set of Comparative Example 1. The evaluation was performed by having subjects wear the ophthalmic lens sets of the Examples and Comparative Examples in a room illuminated by white LED lights and sunlight at an illuminance of 800 lux. The ophthalmic lens sets were attached to eyeglass frames to form glasses, and the subjects wore the glasses. Specifically, the evaluation was performed in an environment where subjects perform daily office work, wearing the ophthalmic lens sets and observing visual targets such as text, diagrams, and printed documents on an LCD display. The evaluation evaluated whether the visual targets were easier to see compared to when not wearing the ophthalmic lens sets. Visibility was evaluated using the following four-point scale. A: The object is easy to see. B: The object is slightly easy to see. C: No change is felt. D: The object is difficult to see. Nine subjects were tested. Information on the subjects' dominant eye was obtained in advance using the method described above, and the glasses were made so that the lens for the dominant eye was positioned on the dominant eye side. The evaluation results are shown in Table 2 below.

[0095]

[0096] From the results shown in Table 2, it was confirmed that when an ophthalmic lens set consisting of two ophthalmic lenses with different minimum transmittances in the wavelength range of 450 to 630 nm was selected, and the ophthalmic lens set was provided with the ophthalmic lens with the lower minimum transmittance for the dominant eye based on the dominant eye information, and the ophthalmic lens set was used, objects were more easily visible (Examples 1 and 2). On the other hand, when an ophthalmic lens set with the same minimum transmittance was used, objects were not more easily visible (Comparative Examples 1 and 2). Furthermore, when the ophthalmic lens with the lower minimum transmittance was applied to the non-dominant eye, fewer people found objects more easily visible compared to the ophthalmic lens with the lower minimum transmittance for the dominant eye (Comparative Example 3).

[0097] REFERENCE SIGNS LIST 10 Providing device 12 Processing unit 14 Input unit 16 Display unit 20 Memory unit 22 Selection unit 24 Ordering unit 26 Control unit 28 Inventory management unit 30 Eyeglasses 32 Eye transmission type optical article set (eye lens set) 34 Eyeglass lens for right eye 35 Eyeglass lens for left eye 36 Eyeglass frame 50 Goggles 52 Eye transmission type optical article 53 Area for right eye 54 Area for left eye 56 Frame 58 Band 60 Binocular telescope 61R Right eye light-shielding tube 61L Left eye light-shielding tube 62R Right eye eyepiece lens group 62L Left eye eyepiece lens group 64R ​​Right eye roof prism 64L Left eye roof prism 66R Right eye auxiliary prism 66L Left eye auxiliary prism 68R Objective lens group for right eye 68L Objective lens group for left eye

Claims

1. A method for providing an ophthalmic lens set, comprising: selecting an ophthalmic lens set consisting of two ophthalmic lenses having different minimum transmittances at wavelengths of 450 to 630 nm from a group of optical articles consisting of a plurality of ophthalmic lenses; and providing the ophthalmic lens set by using the one of the two selected ophthalmic lenses having the lower minimum transmittance as a dominant eye based on dominant eye information.

2. The method for providing an ophthalmic lens set according to claim 1, wherein the ophthalmic lens is a spectacle lens or a contact lens.

3. A method for manufacturing eyeglasses, comprising a step of manufacturing eyeglasses using, as the eyeglass lens for the dominant eye, the eyeglass lens having the lower minimum transmittance between two eyeglass lenses having different minimum transmittances at wavelengths of 450 to 630 nm based on dominant eye information.

4. A method for manufacturing an ocular transmission type optical article having a first region and a second region having mutually different minimum transmittances in the wavelength range of 450 to 630 nm, comprising a step of manufacturing the ocular transmission type optical article by arranging, based on dominant eye information, of the first region and the second region, the region with the lower minimum transmittance on the dominant eye side.

5. A method for manufacturing binoculars having a first optical system and a second optical system with different minimum transmittances at wavelengths of 450 to 630 nm, comprising a step of manufacturing the binoculars by arranging the optical system with the lower minimum transmittance on the dominant eye side of the first optical system and the second optical system based on dominant eye information.

6. An ophthalmic lens set consisting of two ophthalmic lenses having different minimum transmittances at wavelengths of 450 to 630 nm, wherein, based on dominant eye information, the one of the two ophthalmic lenses having the lower minimum transmittance is displayed as being for the dominant eye.

7. The set of ophthalmic lenses according to claim 6, wherein the ophthalmic lenses are spectacle lenses or contact lenses.