Eyeglass lens design method, eyeglass lens manufacturing method, eyeglass lens design apparatus, eyeglass lens ordering and receiving system, and design program

Abstract

This method for designing a spectacle lens includes: acquiring first information about the usage of a spectacle lens; acquiring second information about at least one of a sight line of a wearer during said usage, a location, a use tool, and the body of the user; acquiring data indicating the number, the position, the shape, and the size of a plurality of first regions set on the face of the spectacle lens, and indicating the distance to a target to be viewed through the respective first regions; setting a variable numerical value, from among the numerical values indicating the distance and the number, the position, the shape, and the size of the first regions in the data, and setting the plurality of first regions on the face and the distance; and setting a target aberration distribution on the basis of the set plurality of first regions and the set distance.

Description

Technical Field

[0001] The present invention relates to a method for designing spectacle lenses, a method for manufacturing spectacle lenses, ,eye a spectacle lens design apparatus, an order receiving and delivery system for spectacle lenses, and a design program.

Background Art

[0002] It has been reported that a plurality of regions are set on the lens surface of a spectacle lens, and the spectacle lens is designed based on the distances seen through each region (see Patent Document 1). It is desirable to provide spectacle lenses suitable for various situations when the wearer views an object.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

[0004] According to a first aspect of the present invention, a method for designing a spectacle lens includes obtaining first information about the use of the spectacle lens to be designed, obtaining second information about the line of sight, location, and use equipment of the wearer of the spectacle lens in the use, and at least one of the body of the wearer, and obtaining data indicating the number, position, shape, size of the plurality of first regions to be set on the surface of the spectacle lens, and the distance to the object seen through each first region based on the first information from a storage unit storing an arrangement pattern of a plurality of first regions in which at least the plurality of first regions are arranged in the X-axis direction, which is the horizontal direction when the wearer wears the glasses, among the arrangement patterns of the plurality of first regions corresponding to the use. 2nd acquisition partBased on the second information, a variable value is set among the numerical values ​​indicating the number, position, shape, size, and distance of the plurality of first regions in the data, and the plurality of first regions and the distance are set on the surface of the spectacle lens, wherein the second information indicates the arrangement of a 11th region which is a first region corresponding to the first line of sight when viewing a first object located in front of the wearer, and a 12th region which is a first region corresponding to the second line of sight when viewing a second object located to the left or right of the wearer and at a greater distance than the first object, and the spectacle lens, from the perspective of the wearer of the left eye lens This includes setting the arrangement of the first regions of the left-eye lens and the right-eye lens asymmetrically by setting the 12th region for viewing a second object, which is on either the left side as seen from the left-eye lens wearer or the right side as seen from the left-eye lens wearer and the right side as seen from the right-eye lens wearer, and whose upper edge is positioned above the Y-axis position of the fitting point of the spectacle lens, with the Y-axis direction being the vertical direction when the wearer is wearing the spectacle lenses; and setting the target aberration distribution of the spectacle lens based on the set plurality of first regions and the distance. According to a second aspect of the present invention, a method for manufacturing eyeglass lenses includes manufacturing eyeglass lenses designed by the eyeglass lens design method of the first aspect. According to a third aspect of the present invention, the eyeglass lens design apparatus includes a first acquisition unit that acquires first information about the use of the eyeglass lens to be designed, second information about the gaze, location, and equipment used by the wearer of the eyeglass lens in the said use, and at least one of the wearer's body parts, and a storage unit that stores arrangement patterns of a plurality of first regions according to the said use, in which at least the plurality of first regions are arranged in the X-axis direction, which is the horizontal direction when the wearer wears eyeglasses, and acquires data indicating the number, position, shape, size, and distance to an object viewed through each first region to be set on the surface of the eyeglass lens based on the first information, and sets a variable value among the numerical values ​​indicating the number, position, shape, size, and distance of the plurality of first regions in the data based on the second information, and sets the plurality of first regions and the distance on the surface of the eyeglass lens, wherein the second information is worn When indicating the arrangement of an 11th region, which is a first region corresponding to the first line of sight when viewing a first object located in front of the wearer, and a 12th region, which is a first region corresponding to the second line of sight when viewing a second object located to the left or right of the wearer and at a greater distance than the first object, the 12th region for viewing the second object is set on either the left side of the spectacle lens as viewed from the wearer of the left eye lens and the left side as viewed from the wearer of the right eye lens, or the right side as viewed from the wearer of the left eye lens and the right side as viewed from the wearer of the right eye lens, and the upper end of the region is positioned above the Y-axis position of the fitting point of the spectacle lens, with the vertical direction when the wearer is wearing the spectacle lens being the Y-axis direction, thereby setting the arrangement of the first regions of the left eye lens and the right eye lens asymmetrically, and the 12th region for viewing the second object is set on either the left side as viewed from the wearer of the left eye lens and the left side as viewed from the wearer of the right eye lens, or the right side as viewed from the wearer of the left eye lens and the right side as viewed from the wearer of the right eye lens, and the upper end of the region is positioned above the Y-axis position of the fitting point of the spectacle lens, with the vertical direction when the wearer is wearing the spectacle lens being the Y-axis direction, the 12th region for viewing the second object is set on either the left side as viewed from the wearer of the left eye lens and the left side as viewed from the wearer of the right eye lens, or the right side as viewed from the wearer of the left eye lens and the right side as viewed from the wearer of the right eye lens, and the upper end of the region is positioned above the Y-axis position of the fitting point of the spectacle lens, thereby setting the arrangement of the first regions of the left eye lens and the right eye lens asymmetrically, and the 12th region for viewing the second object is set on either the left side as viewed from the wearer of the left According to a fourth aspect of the present invention, the eyeglass lens ordering and receiving system comprises an eyeglass lens design apparatus according to the fourth aspect, an eyeglass lens ordering apparatus comprising an input unit for receiving the first information and the second information and a transmission unit for transmitting the first information and the second information, and an eyeglass lens order receiving apparatus comprising a receiving unit for receiving the first information and the second information. According to a fifth aspect of the present invention, the design program includes a first acquisition process that acquires first information about the intended use of the eyeglass lens to be designed, and second information about the wearer's line of sight, location, and equipment used for the eyeglass lens in the intended use, as well as at least one of the wearer's body parts, and a storage unit that stores arrangement patterns of a plurality of first regions according to the intended use, in which at least the plurality of first regions are arranged in the X-axis direction, which is the horizontal direction when the wearer is wearing eyeglasses, and acquires data from the storage unit that stores arrangement patterns of a plurality of first regions according to the intended use, in which at least the plurality of first regions are arranged in the X-axis direction, which is the horizontal direction when the wearer is wearing eyeglasses, based on the first information, indicating the number, position, shape, size of the plurality of first regions to be set on the surface of the eyeglass lens, and the distance to the object viewed through each first region. Second acquisition process Based on the second information, a variable value is set among the numerical values ​​indicating the number, position, shape, size, and distance of the plurality of first regions in the data, and the plurality of first regions and the distance are set on the surface of the eyeglass lens. thing In the case where the second information indicates the arrangement of a first region, which is an eleventh region, corresponding to the first line of sight when viewing a first object located in front of the wearer, and a first region, which is a twelfth region, corresponding to the second line of sight when viewing a second object located to the left or right of the wearer and at a greater distance than the first object, the arrangement of the first regions of the left and right eye lenses is set asymmetrically by setting the twelfth region for viewing the second object on either the left side of the spectacle lens as viewed by the wearer of the left eye lens and the left side as viewed by the wearer of the right eye lens, or the right side as viewed by the wearer of the left eye lens and the right side as viewed by the wearer of the right eye lens, and with the vertical direction when the wearer is wearing the spectacle lens being the Y-axis direction, the upper end of the region is positioned above the Y-axis position of the fitting point of the spectacle lens. territoryThe processing unit is made to perform a region setting process and a target aberration setting process that sets the target aberration distribution of the spectacle lens based on the set plurality of first regions and the distance. [Brief explanation of the drawing]

[0005] [Figure 1] Figure 1 is a conceptual diagram showing an eyeglass lens according to one embodiment. [Figure 2] Figure 2 is a conceptual diagram showing an example of a distance distribution according to one embodiment. [Figure 3] Figure 3 is a conceptual diagram illustrating the setting of distance distribution data. [Figure 4] Figure 4 is a conceptual diagram illustrating the third domain. [Figure 5] Figure 5 is a conceptual diagram showing an eyeglass lens ordering and receiving system according to one embodiment. [Figure 6] Figure 6 is a flowchart showing the flow of providing eyeglass lenses according to one embodiment. [Figure 7] Figure 7 is a conceptual diagram showing the order screen. [Figure 8] Figure 8 is a conceptual diagram showing the configuration of the design department. [Figure 9] Figure 9 is a flowchart showing the flow of a design method for eyeglass lenses according to one embodiment. [Figure 10] Figure 10 is a conceptual diagram illustrating the composite sag surface. [Figure 11] Figure 11 is a graph showing an example of the average curvature of the composite sag surface of an eyeglass lens according to one embodiment. [Figure 12] Figure 12 is a graph showing an example of the normalized mean curvature of the composite sag surface of an eyeglass lens according to one embodiment. [Figure 13] Figure 13 is a graph showing an example of the normalized mean curvature of the composite sag surface of an eyeglass lens according to one embodiment. [Figure 14] Figure 14 is a graph showing an example of the normalized mean curvature of the composite sag surface of an eyeglass lens according to a modified example. [Figure 15]FIG. 15 is a diagram showing an example of a distance distribution according to a modified example. [Figure 16] FIG. 16 is a diagram showing an example of a distance distribution according to a modified example. [Figure 17] FIG. 17 is a diagram showing an example of a distance distribution according to a modified example. [Figure 18] FIG. 18 is a diagram showing an example of a distance distribution according to a modified example. [Figure 19] FIG. 19 is a conceptual diagram showing the position of the apparent optical axis of a spectacle lens according to a modified example. [Figure 20] FIG. 20 is a conceptual diagram showing the position of the apparent optical axis of a spectacle lens according to a modified example. [Figure 21] FIG. 21 is a conceptual diagram showing the position of the apparent optical axis of a spectacle lens according to a modified example. [Figure 22] FIG. 22 is a diagram showing an example of a distance distribution according to a modified example. [Figure 23] FIG. 23 is a conceptual diagram for explaining the provision of a program. [Figure 24] FIG. 24 is a diagram showing the residual refractive power of a spectacle lens in Example 1. [Figure 25] FIG. 25 is a diagram showing the residual astigmatism of a spectacle lens in Example 1. [Figure 26] FIG. 26 is a diagram showing the average curvature of a spectacle lens in Example 1. [Figure 27] FIG. 27 is a diagram showing the residual refractive power of a spectacle lens in a comparative example. [Figure 28] FIG. 28 is a diagram showing the residual astigmatism of a spectacle lens in a comparative example. [Figure 29] FIG. 29 is a diagram showing the average curvature of a spectacle lens in a comparative example. [Figure 30] FIG. 30 is a diagram showing the residual refractive power of a spectacle lens in Example 2. [Figure 31] FIG. 31 is a diagram showing the residual astigmatism of a spectacle lens in Example 2. [Figure 32] FIG. 32 is a diagram showing the average curvature of a spectacle lens in Example 2. [Figure 33] Figure 33 shows the residual refractive power of the spectacle lens in Example 3. [Figure 34] Figure 34 shows the residual astigmatism of the spectacle lens in Example 3. [Figure 35] Figure 35 shows the average curvature of the spectacle lens in Example 3. [Figure 36] Figure 36 is a graph showing the normalized mean curvature of the spectacle lens in Example 3. [Figure 37] Figure 37 shows the residual refractive power of the spectacle lens in Example 4. [Figure 38] Figure 38 shows the residual astigmatism of the spectacle lens in Example 4. [Figure 39] Figure 39 shows the average curvature of the spectacle lens in Example 4. [Figure 40] Figure 40 is a graph showing the normalized mean curvature of the spectacle lens in Example 4. [Figure 41] Figure 41 shows the residual refractive power of the spectacle lens in Example 5. [Figure 42] Figure 42 shows the residual astigmatism of the spectacle lens in Example 5. [Figure 43] Figure 43 shows the average curvature of the spectacle lens in Example 5. [Figure 44] Figure 44 is a graph showing the normalized mean curvature of the spectacle lens in Example 5. [Figure 45] Figure 45 shows the residual refractive power of the spectacle lens in Example 6. [Figure 46] Figure 46 shows the residual astigmatism of the spectacle lens in Example 6. [Figure 47] Figure 47 shows the average curvature of the spectacle lens in Example 6. [Figure 48] Figure 48 is a graph showing the normalized mean curvature of the spectacle lens in Example 6. [Figure 49] Figure 49 shows the residual refractive power of the spectacle lens in Example 7. [Figure 50] Figure 50 shows the residual astigmatism of the spectacle lens in Example 7. [Figure 51] Figure 51 shows the average curvature of the spectacle lens in Example 7. [Figure 52] Figure 52 is a graph showing the normalized mean curvature of the spectacle lens in Example 7. [Modes for carrying out the invention]

[0006] The following describes the design method of an eyeglass lens according to one embodiment, with reference to drawings as appropriate. In the following description, the units of refractive power and astigmatism shall be expressed in diopters (D) unless otherwise specified. In the following description, when terms such as "upper," "lower," "upper part," and "lower part" of an eyeglass lens are used, they refer to the positional relationship of the lens when the eyeglass lens is worn.

[0007] In this specification, the refractive force that a light ray receives when it originates from a specific point on the object side of the spectacle lens, passes through the spectacle lens, passes through the rotation point (center of rotation) of the eyeball in the assumed wearing state during the design of the spectacle lens, and reaches the image formation position is defined as the refractive force of the spectacle lens when worn. This depends on the position of the point through which the light ray passes in the spectacle lens, that is, the position of the point where the light ray is refracted on the object-side or eyeball-side surface of the spectacle lens.

[0008] The value of the refractive power when wearing the glasses is defined here as follows: Lo is the distance from a specific point on the object side to the point on the object-side surface of the spectacle lens along the ray passing through the point of rotation, and Li is the distance from the point on the reference sphere behind the spectacle lens to the image formation position. Both units are meters (m). The sign of distance Lo is positive. The sign of distance Li is positive when the image formation position is on the eye side of the spectacle lens, and negative when the image formation position is on the object side of the spectacle lens. In this case, the sum of the reciprocals of distance Lo and distance Li is the refractive power when wearing the glasses, and the unit is diopters (D). The reference sphere is a sphere that passes through the vertex of the back surface of the spectacle lens and is centered at the point of rotation of the eyeball. As is well known, the image formation position in any cross-section containing a ray depends on the direction of the cross-section. Therefore, distance Li depends on the direction of any cross-section containing a ray. Consequently, the refractive power when wearing the glasses depends on the direction of this cross-section, and there is a maximum refractive power and a minimum refractive power.

[0009] The arithmetic mean of the maximum and minimum refractive powers is defined as the average refractive power of the spectacle lens, and the absolute value of the difference between these two is defined as the astigmatism of the spectacle lens. The presence of average refractive power and astigmatism in spectacle lenses helps correct refractive errors in the wearer's eyes, such as farsightedness, nearsightedness, and astigmatism, and assists the eye's accommodative power in cases of presbyopia. In the following explanation, when simply referred to as "refractive power," it means average refractive power unless otherwise specified.

[0010] From the refractive power and astigmatism of these spectacle lenses, the values ​​obtained by removing the spherical power, cylindrical power, and astigmatism axis angle necessary to correct the aberrations of the wearer's eye, as determined by the wearer's prescription data, while appropriately considering Listing's law in eye movement, are defined as residual refractive power and residual astigmatism, respectively. In the following explanation, when simply referred to as "aberration," it means both residual refractive power and residual astigmatism unless otherwise specified.

[0011] In the case of single-vision spectacle lenses, residual refractive power and residual astigmatism are generally undesirable because they cause the lens characteristics to deviate from those determined by the prescription. For example, if residual astigmatism is large, the image seen by the wearer through the spectacle lens will be blurred due to astigmatism. Residual refractive power can cause eye fatigue by requiring extra accommodative power, or it can cause blurring due to the inability to focus. Therefore, an ideal spectacle lens is one in which both residual refractive power and residual astigmatism are 0D at all points on the lens.

[0012] However, since it is fundamentally impossible to independently control refractive power and astigmatism at every position of an eyeglass lens, it is not possible to design an eyeglass lens in which both residual refractive power and residual astigmatism are 0D at every position.

[0013] Therefore, in order to minimize the adverse effects on the wearing comfort of eyeglass lenses, the balance between residual refractive power and residual astigmatism is considered, and appropriate design target values ​​are set for each. These target values ​​are then set as the target residual refractive power and target residual astigmatism, and eyeglass lenses are designed accordingly. In the following explanation, "target aberration" refers to both the target residual refractive power and the target residual astigmatism, "target aberration distribution" refers to both the target residual refractive power distribution and the target residual astigmatism distribution, and "target aberration distribution data" as described later refers to data for both the target residual refractive power distribution and the target residual astigmatism distribution.

[0014] The balance between residual refractive power and residual astigmatism, or the balance between target residual refractive power and target residual astigmatism, is called the aberration balance. Quantitatively, it can be expressed as a value between -∞ and +∞, for example, as the ratio of residual refractive power to residual astigmatism, or the ratio of target residual refractive power to target residual astigmatism.

[0015] Other quantitative representations of aberration balance are also possible and can be used as appropriate. For example, it can be expressed as the square root of the sum of the square of the residual refractive power and the square of the value obtained by multiplying the residual astigmatism by coefficient A, or as the square root of the sum of the square of the target residual refractive power and the square of the value obtained by multiplying the target residual astigmatism by coefficient A. In this specification, these values ​​are referred to as clarity or target clarity. Here, coefficient A is between 0.2 and 1.

[0016] Clarity is an indicator that represents the amount of blur perceived by the wearer; a lower clarity rating means less blur. When the amount of blur is large, the human eye tries to reduce the blur by using excessive accommodative power to focus, which can lead to eye strain. Therefore, especially for eyeglass lenses intended for long-term use, the goal is sometimes to design them with the minimum possible clarity rating to ensure the wearer can use the lenses comfortably and relaxed.

[0017] In the case of progressive eyeglass lenses, such as bifocal lenses, there is a difference from the single-vision eyeglass lenses mentioned above: they have a refractive power called "addition." Addition is the process of intentionally adding a target residual refractive power to the lower near-vision region of the eyeglass lens, compared to the upper far-vision region. This intentionally makes the residual refractive power of the lower region more positive than that of the upper region. This is a refractive power that assists the eye's accommodation when viewing near objects.

[0018] The type of spectacle lens designed in this embodiment is not particularly limited and can be a single-vision spectacle lens or a progressive power spectacle lens, etc. The spectacle lens designed in this embodiment is not particularly limited, but can be manufactured using a semi-finished lens. For example, a spherical surface is used for the object-side surface of the spectacle lens, and this spherical surface has a fixed, constant curve value within a predetermined power range defined by the base curve classification. Based on the object-side surface of this semi-finished lens, the eye-side surface to be processed is calculated and processed based on the wearer's prescription data, etc. Complex lens surfaces with various corrections, such as suppression of astigmatism, can be processed. Here, the wearer's prescription data may include at least one of the following: distance power, near power, astigmatism power, astigmatism axis angle, add power, and prism.

[0019] The following describes an example of designing the shape of the eye-facing surface of a single-vision spectacle lens using a semi-finished lens. However, the spectacle lens design method of this embodiment is not limited to the following example, as long as the design is performed using the distance distribution data described later.

[0020] Figure 1 is a conceptual diagram showing an eyeglass lens designed by the eyeglass lens design method of this embodiment. In the example in Figure 1, the eyeglass lens LS is a single-vision eyeglass lens. The eyeglass lens LS is in its state before processing to match the shape of the eyeglass frame (before lens grinding), and is formed in a circular shape in plan view. In the figure, the upper side of the eyeglass lens LS will be positioned upwards when worn, and the lower side of the figure will be positioned downwards when worn. The eyeglass lens LS has a fitting point FP (also called the eye point). The fitting point FP is the reference point of the pupil when the wearer puts on the eyeglass lens LS, and is the point where the line of sight and the lens surface intersect when the wearer is facing forward and takes the first eye position.

[0021] In the following embodiment, the left side of the spectacle lens as viewed from the wearer's perspective is defined as the left side of the spectacle lens, and the right side as viewed from the wearer's perspective is defined as the right side of the spectacle lens. The X-axis is taken along the left-right direction, i.e., the horizontal direction, with the right side being the positive direction. The Y-axis is taken along the up-down direction, i.e., the vertical direction, with the upper side being the positive direction (see Coordinate System 8).

[0022] In the eyeglass lens design method of this embodiment, the design is performed using data indicating the number, position, shape, and size of multiple regions to be set on the surface of the eyeglass lens LS, as well as the distance to the object viewed through each region. This data is called distance distribution data, and the above regions are called the first region.

[0023] Figure 2 is a conceptual diagram showing an example of a distance distribution represented by distance distribution data. The distance distribution is the distribution of distances from the object that the wearer is expected to see through the lens surface of the spectacle lens LS on the object side to the spectacle lens LS at each position on the object side of the spectacle lens LS. Hereafter, the lens surface on the object side will be called the object side, and the lens surface on the eyeball side will be called the eyeball side. In the distance distribution data, the position of the spectacle lens LS on the object side is represented by two-dimensional coordinates. In the distance distribution D1 of Figure 2, the position on the object side is shown in an XY Cartesian coordinate system with fitting point FP as the origin. In the distance distribution data, the distance from each position on the object side to the object that the wearer sees through the spectacle lens LS is associated with the XY coordinates. Hereafter, this set distance will be called the set distance. In Figure 2, with fitting point FP as the origin of the XY Cartesian coordinate system, a line Lx parallel to the X axis and a line Ly parallel to the Y axis are shown passing through fitting point FP, and the same applies to the following distance distribution figures. Furthermore, the distance distribution data may be configured to correlate the position of the spectacle lens LS on the side of the eyeball with the set distance. Alternatively, instead of using a Cartesian coordinate system, the position on the lens surface through which the line of sight passes from the point of rotation of the eyeball may be indicated by the rotation angle. In distance distribution data, the definition of the distance from the object assumed to be viewed by the wearer to the spectacle lens LS is determined by any method used in the design of spectacle lenses. For example, this could be the distance from the object to the object-side surface of the spectacle lens, the distance from the object to the reference sphere centered on the point of rotation of the eyeball, passing through the vertex of the back surface of the spectacle lens, or the distance from the object to the point of rotation of the wearer's eyeball. While these are strictly different, they are practically the same, so they will not be distinguished below. Furthermore, they may be simply expressed as the distance from the object to the eyeball, but in this case too, they are practically the same distance.

[0024] When optimizing the design of eyeglass lenses (LS) using ray tracing, the position of the object point that generates the ray is determined based on distance distribution data, and is located at a position away from the eyeglass lens by a set distance set on the side of the object through which the ray passes. In this case, the set distance set on the side of the object can be expressed in any mathematical form. For example, each coordinate point in the distance distribution data can be represented as a large number of point cloud data discretely distributed in a grid in the X and Y directions, and the design distance between the points can be set by linear interpolation. Alternatively, these point cloud data can be interpolated using splines with control points, or they can be expressed by interpolating using any mathematical formula that represents a plane or curved surface for each region.

[0025] The distance distribution shown in Figure 2 was created to match the conditions under which the wearer plays golf, particularly putting. Distance distribution D1 comprises the first region V1A, V1B, and V1C, and the second region V2h, V2i, and V2j. Hereafter, when referring to the specific aspects of the first region V1A, V1B, and V1C without distinction, it will be referred to as the first region V1, and when referring to the specific aspects of the second region V2h, V2i, and V2j without distinction, it will be referred to as the second region V2.

[0026] In distance distribution D1, the positions of multiple first regions V1, particularly first region V1B, are set asymmetrically with respect to a vertical plane containing a straight line passing through the fitting point FP and the design rotation point of the spectacle lens LS. Distance distribution D1 is for right-handed or right-handed wearers. For left-handed or left-handed wearers, it is preferable to set a distance distribution that is the left-right inversion of distance distribution D1 with respect to the vertical straight line Ly passing through the fitting point FP.

[0027] The first region V1 is a region where the set distance is constant within each individual first region V1. Preferably, the set distance in the first region V1 is set based on the object that the wearer sees through the first region V1 for each application of the spectacle lens LS.

[0028] The first region V1A in Figure 2 is located at the top of the spectacle lens LS and is the region for viewing distant objects. Wearers look at distant objects, for example, when surveying the entire golf course from the teeing area to the cup and considering how to play. When looking at distant objects while playing golf, wearers tend to look through the vicinity of and above the fitting point FP of the spectacle lens while standing upright. Therefore, it is preferable that the first region V1A includes the fitting point FP and as wide an area as possible above the fitting point FP. The setting distance of the first region V1A is set to 0D so that the optimal performance of the spectacle lens is obtained when the wearer is viewing at infinity.

[0029] The first region V1B in Figure 2 is the area for focusing on the ball when setting up to hit it or during the swing. In golf, setting up to hit the ball will be referred to as the address.

[0030] Figure 3 is a conceptual diagram illustrating the putting situation in golf. When putting, the wearer Wr determines the direction and force of the shot by looking at the distance from the ball B to the cup Cp, the slope of the green Sf, and the direction of the grain of the grass. Then, holding the putter Pt, Wr stands near the ball B and takes their address. From the address position until the swing and strikes the ball B, the wearer Wr keeps their eyes fixed on the ball B. Here, the distance between the wearer Wr's eye and the ball B at the address or swing is defined as the first distance L1, the distance between the wearer Wr's eye and the cup Cp is defined as the second distance L2, and the distance between the ball B and the cup Cp is defined as the third distance L3. Note that, more precisely, the eye refers to the center between the left and right eyes.

[0031] The position and shape of the first region V1B in Figure 2 are determined based on the rotation angle of the wearer Wr's eye during address or swing (hereinafter referred to as "address, etc.") and the range of the first region V1C, which will be described later. The first region V1B includes the position directly below the fitting point FP and the portion of the spectacle lens on the dominant arm side as seen from the wearer Wr. The rotation angle during address, etc. can be calculated from images of multiple golfers during their address, etc. In one example of such statistical data, with an upward angle from the first eye position being positive and a downward angle being negative, the downward rotation angle ranged from -16 degrees to -33 degrees. Assuming the spectacle lens LS is a thin, parallel-plane plate, and the distance from the posterior vertex of the spectacle lens LS to the center of rotation of the eyeball is 25 mm, this downward rotation angle corresponds to a Y coordinate range of approximately -7 mm to -16 mm in the coordinate system of Figure 2. Therefore, the first region V1B is preferably located directly below the fitting point FP in the spectacle lens LS, and its Y-coordinate is in the range of -7mm to -16mm. The upper limit of the first region V1B in the Y direction (Y-coordinate y4 in Figure 2) is set so that the second region V2i does not include the fitting point FP. From this viewpoint, for example, if the width of the second region V2i in the Y direction is 3mm, then the upper limit of the first region V1B in the Y direction becomes -3mm.

[0032] The horizontal range of the first region V1B is preferably wide, but it is set based on the range of the first region V1C.

[0033] The setting distance for the first area V1B is preferably set to the first distance L1 (Figure 3). Measuring the first distance L1 can be complicated. Therefore, the setting distance for the first area V1B is preferably calculated based on the wearer's height, and more preferably set to a length of 85% to 90% of the wearer's height in meters. For example, if the wearer's height is 1.7m, it may be set to 0.66D, which is 88% of that, or 1.5m. Alternatively, the setting distance for the first area V1B may be set based on the length of the putter Pt owned or used by the wearer's height. In this case, it is more desirable to set it to a length of 160% to 180% of the length of the putter Pt. In this case, even if the wearer's height is unknown, by setting the setting distance as described above based on information about the length of the putter Pt, it is possible to set a setting distance that takes into account the wearer's putting stance habits. For example, if the length of the putter Pt is 34 inches, you could use 0.68D, which is equivalent to 1.47m (170% of 34 inches).

[0034] Distance distribution data is stored as a pattern in the order-taking or design equipment for eyeglass lenses, corresponding to the intended use of the eyeglass lenses (LS). For example, in distance distribution data associated with the use of eyeglass lenses (LS) being golf, the set distance in the first region V1B is set to be variable, compared to the first region V1 and the second region V2. In this case, the set distance in the first region V1B is set at the eyeglass lens retailer based on the wearer's height (Wr) obtained from the wearer (Wr). For values ​​other than the set distance in the first region V1B that are not set to be variable, pre-set values ​​can be used. Thus, distance distribution data is prepared as a pattern associated with the intended use of eyeglass lenses (LS), and some of the values ​​related to the first region V1 and the second region V2 are variable, allowing for some adjustment to suit the wearer (Wr) for each pattern. Hereafter, values ​​that are set to be variable will be referred to as variable values, and values ​​that are not set to be variable will be referred to as fixed values. As an example, in the example shown in Figure 2, based on the average height of Japanese people, which is 1.7m, the following fixed values ​​can be set: x1 = -7mm, x2 = -4mm, y1 = 6mm, y2 = 3mm, y3 = -4mm, and y4 = -7mm. If set to variable, it may be configured to select from several pre-set numerical values ​​or ranges as appropriate.

[0035] At least one of the following can be set as a variable value: the number, position, shape, size, and set distance of the first region V1. At least one of the following can be set as a variable value: the number, position, shape, size, and set distance of the second region V2. For example, in the example in Figure 2, at least one of the following can be set as a variable value: the X coordinate x1 of the left end and the X coordinate x2 of the right end of the second region V2j, the Y coordinate y1 of the upper end and the Y coordinate y2 of the lower end of the second region V2h, and the Y coordinate y3 of the upper end and the Y coordinate y4 of the lower end of the second region V2i.

[0036] The first region V1C is the area used by the wearer Wr to view an object determined in the direction from which the ball B is being struck during putting. The object determined in the direction from which the ball B is being struck is, if the putting line is a straight line that does not curve, the center of the cup Cp, or a marker such as dead grass on the straight line connecting the ball B and the cup Cp. If the putting line curves to the left or right (hook line or slice line), it is a marker determined at any point on the straight line in the direction from which the ball B is being struck. These objects can be determined arbitrarily by the wearer Wr. In the following, we will assume that the center of the cup Cp is determined as the object. The horizontal range of the first region V1C is set as follows. For example, if a wearer Wr with a height of 1.7m, which is the average height of a Japanese person, leans forward slightly when putting, and the distance from the eye to the ball B becomes 1.5m, then the cup Cp is 3m (second distance L2) from the wearer Wr's eye. At that time, the distance from ball B to cup Cp (third distance L3) is approximately 2.6m. In this situation, the direction of cup Cp as seen from the right-handed wearer Wr is approximately 55 degrees to the left (θ12 in Figure 3) of the direction in which the wearer is looking at ball B at their feet, within the plane containing the wearer's eye, cup Cp, and ball B. Therefore, the wearer Wr coordinates their neck and eyes to turn left to look at the object set in the direction in which ball B will be hit. It is assumed that there will be a large difference in the ratio of the angles that the neck and eyes turn left, but it is thought that it will be impossible to maintain the correct address posture if one tries to turn 55 degrees to the left using only neck rotation. Therefore, the assistance of eye rotation by neck rotation should be limited to the maximum extent that it reaches the effective field of view. The effective field of view is defined as the range in which information can be instantaneously received by fixating with only eye movements, and in the horizontal direction, it is defined as a range of up to 15 degrees on each side. Assuming the spectacle lens LS is a thin, parallel-plane plate, and the distance from the vertex of the rear surface of the spectacle lens LS to the center of rotation of the eyeball is 25 mm, then a 15-degree angle to the left horizontally corresponds to X approximately -7 mm in the coordinate system of Figure 2. Therefore, it is preferable that the X coordinate (x1) of the right end of the first region V1C is at a position of X = -7 mm or to the left of that position.

[0037] The vertical range of the first region V1C is set as follows: When looking at an object set in the direction from which ball B will be launched during putting, the eyeballs are rotated downwards while leaning forward. The angle of downward rotation is at most the same range as when viewing ball B through the first region V1B. In addition, the object set in the direction from which ball B will be launched is viewed through the first region V1C, but considering cases where the object is set far away from the ball during long putts, it is desirable that the vertical range of the first region V1C be wide. Therefore, it is desirable that the Y coordinate (y2) of the upper end of the first region V1C be in the range from at least Y = approximately 0 mm, which is the height of the fitting point FP, to at most Y = approximately 4 mm, which corresponds to the upper angle of the effective field of view of 8 degrees.

[0038] The setting distance for the first region V1C can be set to the distance at which the user frequently views the target object in the direction from which ball B is launched. An optician or salesperson may ask the user Wr about their preferred putting distance and set the distance based on that distance. The frequently used setting distances for the first region V1C are 0.55D to 0.14D for general use, 0.63D to 0.3D for beginners, and 0.4D to 0.1D for intermediate to advanced users, and are usually set within this range. More preferable representative values ​​are 0.3D for general use, 0.52D for beginners, and 0.19D for intermediate to advanced users. These distances correspond to the distances assumed to be 1m to 7m for general use, 0.5m to 3m for beginners, and 2m to 10m for intermediate to advanced players, with the first distance L1 (Figure 3) being 1.5m. The more preferable representative values ​​are 3m for general use (which is frequent), 1.2m for beginners (suitable for putting practice), and a slightly longer 5m for intermediate to advanced players.

[0039] The second region V2 is located between multiple first regions V1, each with a different set distance, and connects these first regions V1 in a continuous manner. The second region V2h is located between the first region V1A and the first region V1C. The second region V2i is located between the first region V1A and the first region V1B. The second region V2j is located between the first region V1C and the first regions V1A and V1B.

[0040] In the second region V2h, the set distance changes linearly along the Y-axis using diopters as units, connecting the set distance of the first region V1A and the set distance of the first region V1C. In the second region V2i, the set distance changes linearly along the Y-axis using diopters as units, connecting the set distance of the first region V1A and the set distance of the first region V1B. In the second region V2j, the set distance changes linearly along the X-axis using diopters as units, connecting the set distance of the first region V1C with the set distances on X=x2 in the first regions V1A, V1B, and V2i, and connecting the set distance on X=x1 in the second region V2h with the set distance of the first region V1A.

[0041] Since the second region V2 is a region where the set distance changes in this way, it can also be represented using a spline function. When the first region V1 and the second region V2 are represented together using a spline function, the set distance can be represented as changing continuously and smoothly, which is convenient for designing eyeglass lenses LS with smooth changes in refractive power depending on the refraction position.

[0042] Figure 4 is a conceptual diagram showing the third region V3. When the setting distance for the second region V2j is set as described above, the setting distance changes in the X-axis direction in the third region V3, which is located inside the second region V2j and between the first region V1B and the second region V1C. This third region V3 is the region through which the line of sight to the putted ball B passes as the ball B moves toward the cup Cp. Therefore, the most frequent line of sight trajectory in the third region V3 is the trajectory along the X-axis direction. This trajectory is schematically shown by the arrow At. In the third region V3, if the change in the setting distance along the Y-axis direction is smaller than the change in the setting distance along the X-axis direction, the distortion of the object being viewed, such as the ball B, is reduced when the line of sight passes through in the X-axis direction. Preferably, there is no change in the setting distance in the direction perpendicular to the most frequent direction of line of sight movement passing through the third region V3, or there is substantially no change. In the third region V3, it is preferable to set the set distance as described above, but the method for setting the set distance in the second region V2 is not particularly limited as long as the set distances between multiple first regions V1 are continuously connected. For example, in addition to the case where the distance in units of diopters changes linearly as described above, the distance in units of diopters may also change smoothly and non-linearly.

[0043] The fixed values ​​in the distance distribution data are set based on the intended use of the eyeglass lens LS, as described above. In addition, statistical or machine learning-based values ​​can be used for at least one of the wearer Wr's line of sight, location, and equipment used, as well as for the wearer Wr's body. Such machine learning can be performed by collecting images from the internet, and it is particularly preferable to use images of advanced golfers for training. Furthermore, the fixed values ​​may be set based on the characteristics of the movements or postures of famous golfers when they play golf.

[0044] The variable values ​​in the distance distribution data can be set based on information about the wearer Wr's line of sight, location, and equipment used in the application of the spectacle lens LS, as well as information about at least one of the wearer Wr's body. Hereinafter, this information about the wearer Wr will be referred to as wearer information. Here, the location includes, for example, the distance between the wearer Wr and an object defined in the direction from which the ball B is launched, such as a cup Cp during putting. The equipment used includes, for example, a putter Pt owned or used by the wearer Wr. The wearer information may include at least one of the following: the wearer Wr's height, the wearer Wr's posture when the wearer Wr is engaged in activities such as golf, the position or range of the spectacle lens LS through which the wearer Wr's line of sight passes, and information about the position of the wearer Wr or the object being viewed. Information about the wearer's posture includes the distance between the wearer's eyes and the ball B during the golf address, the angle of neck rotation when looking at the cup Cp or an object designated in the direction of the ball B during putting, the distance to the ball B that is emphasized during putting, or the width of the portion of the spectacle lens used when looking at the object designated in the direction of the ball B. If wearer information is unavailable, statistical values ​​or values ​​obtained through machine learning, as described above, can be used.

[0045] It is preferable to use the same distance distribution data for the left and right eye lenses in the spectacle lens LS. Therefore, in distance distribution D1, for right-handed or right-handed players, the first region V1C for viewing the ball B, cup Cp, or the object defined in the direction from which ball B is launched is set to the left side of the left and right eye lenses as viewed from the wearer Wr. In distance distribution D1, for left-handed or left-handed players, the first region V1C for viewing the ball B, cup Cp, or the object defined in the direction from which ball B is launched is set to the right side of the left and right eye lenses as viewed from the wearer Wr.

[0046] Once the numerical values ​​for the distance distribution data are set, target aberration distribution data is generated, showing the target aberration distribution of the spectacle lens LS, based on the set distances set in the first and second regions V2 of the distance distribution data and a predetermined aberration balance. In the target aberration distribution data, each position in the spectacle lens LS is associated with the target aberration at that position, i.e., the target residual refractive power and target residual astigmatism. The method for generating the target aberration distribution data is not particularly limited, and known methods can be used.

[0047] Aberration balance is a value set for each position or part of the spectacle lens LS, and it indicates the target relative magnitude of the residual refractive power and residual astigmatism at that position or part. Therefore, aberration balance can be expressed, for example, as the ratio of the target residual refractive power to the target residual astigmatism.

[0048] The aberration balance can be set, for example, so that the distribution is rotationally symmetrical around a straight line passing through the fitting point FP and the design rotation point, regardless of the set distance. Alternatively, for each of the first region V1 or the second region V2, the distribution can be set to be rotationally symmetrical around a straight line passing through the fitting point FP and the design rotation point, based on an appropriately set distance.

[0049] Once the target aberration distribution data is obtained, the distance distribution data and target aberration distribution data are converted to a coordinate system for ray tracing, and an optimization design using ray tracing is performed for the spectacle lens LS. In the optimization design, the residual refractive power and residual astigmatism of the spectacle lens LS are calculated by ray tracing, and it is determined whether the calculated residual refractive power and residual astigmatism fall within a predetermined range from the target value. If the calculated residual refractive power and residual astigmatism do not fall within the predetermined range, the shape of the spectacle lens LS is changed, and the ray tracing and determination are performed again. If the calculated residual refractive power and residual astigmatism fall within the predetermined range, the design of the spectacle lens LS is completed.

[0050] This section describes an eyeglass lens ordering and receiving system related to the design of eyeglass lenses. The eyeglass lens LS according to this embodiment is preferably provided by the eyeglass lens ordering and receiving system described below.

[0051] Figure 5 shows the configuration of the eyeglass lens ordering and receiving system 10 according to this embodiment. The eyeglass lens ordering and receiving system 10 consists of an ordering device 1 installed in an eyeglass store on the ordering side, and an order receiving device 2, a processing machine control device 3, and an eyeglass lens processing machine 4 installed in a lens manufacturer on the receiving side. The ordering device 1 and the order receiving device 2 are connected to each other via a network 5, such as the Internet. The processing machine control device 3 is also connected to the order receiving device 2 in a communication manner, and the eyeglass lens processing machine 4 is also connected to the processing machine control device 3 in a communication manner. Note that in Figure 5, for illustrative purposes, only one ordering device 1 is shown; however, in reality, multiple ordering devices 1 installed in multiple eyeglass stores are connected to the order receiving device 2.

[0052] The ordering device 1 is a computer that processes orders for eyeglass lenses LS, and includes a control unit 11, a storage unit 12, a communication unit 13, a display unit 14, and an input unit 15. The control unit 11 controls the ordering device 1 by executing a program stored in the storage unit 12. The control unit 11 includes an order processing unit 16 that processes orders for eyeglass lenses LS. The communication unit 13 communicates with the order receiving device 2 via the network 5. The display unit 14 is a display device such as a liquid crystal monitor, and displays an order screen for inputting information (order information) about the eyeglass lenses to be ordered. The input unit 15 includes, for example, a mouse, a keyboard, etc. For example, order information corresponding to the contents of the order screen is input via the input unit 15. The display unit 14 and the input unit 15 may be integrated using a touch panel or the like.

[0053] The order processing device 2 is a computer that performs order processing and design processing for eyeglass lenses, and is composed of a control unit 21, a storage unit 22, a communication unit 23, a display unit 24, and an input unit 25. The control unit 21 controls the order processing device 2 by executing programs stored in the storage unit 22. The control unit 21 includes an order processing unit 26 that processes orders for eyeglass lenses LS, and a design unit 27 that processes the design of eyeglass lenses LS. The communication unit 23 communicates with the ordering device 1 via the network 5 and with the processing machine control device 3. The storage unit 22 stores various data for eyeglass lens design in a readable format. The display unit 24 is a display device such as a liquid crystal monitor, which displays the design results of eyeglass lenses, etc. The input unit 25 is composed of, for example, a mouse or keyboard. The display unit 24 and the input unit 25 may be integrated using a touch panel or the like.

[0054] Next, the procedure for providing eyeglass lenses LS in the eyeglass lens ordering and receiving system 10 will be explained using the flowchart shown in Figure 6. The left side of Figure 6 shows the procedure performed by the ordering party, and the right side of Figure 6 shows the procedure performed by the receiving party. In the eyeglass lens manufacturing method using the eyeglass lens ordering and receiving system 10, eyeglass lenses LS designed based on the eyeglass lens design method described above are designed and manufactured.

[0055] In step S11, the ordering device 1 accepts the input of order information. The order information is information about the eyeglass lens LS to be ordered, which is entered on the ordering screen described later. The order information includes usage information, which is information about the intended use of the eyeglass lens LS, and wearer information. For example, at an eyeglass lens store, a salesperson asks the wearer Wr about the intended use of the eyeglass lens and the wearer Wr's height. The ordering person, such as a salesperson, displays the ordering screen on the display unit 14 of the ordering device 1 and inputs the order information via the input unit 15. Alternatively, when an optician's salesperson inputs usage information and grade into the ordering device 1, an input screen for variable values ​​to be set in the distance distribution D1 may be displayed, and the salesperson may input these variable values ​​into the input screen after obtaining them from the wearer Wr.

[0056] Figure 7 shows an example of the order screen 100. In the lens information field 101, you enter items related to the ordered lens power, such as the product name of the lens to be ordered, spherical power (S power), astigmatism power (C power), astigmatism axis angle (axis), and add power. The processing specification information field 102 is used when specifying the outer diameter of the ordered lens or when specifying an arbitrary point thickness. The staining information field 103 is used when specifying the color of the lens. In the fitting point (FP) information field 104, you enter the eye position information of the wearer Wr, such as PD, which represents the interpupillary distance. In the frame information field 105, you enter the frame model name, frame type, etc.

[0057] Additional information item 106 is used to input usage information, grade information, and wearer information. In the example in Figure 7, "golf" is entered as the usage information. The grade information is information about the grade of the eyeglass lens LS, and a higher grade means that the eyeglass lens is a high-quality lens with better performance. Additional information item 106 can include information about the grade of the eyeglass lens LS as shown in Figure 7, but it is omitted if there is only one grade for the eyeglass lens LS. The higher the grade of the eyeglass lens LS, the more preferable it is to use distance distribution data with more variable values. The more variable values ​​there are, the more detailed wearer information can be used, and the eyeglass lens LS that is better suited to the wearer Wr can be provided. In the example in Figure 7, the grade of the eyeglass lens LS is "1", which is not high, and the only variable value is the setting distance of the first region V1B. The setting distance of the first region V1B is set as described above based on the height value entered in additional information item 106.

[0058] In additional information item 106, the item names and number of items for user information input fields change appropriately based on the entered usage information and grade information. For example, in a different example from Figure 7, if the usage information is "golf" and the grade information is "2", which is higher than "1", then in addition to height, an item for inputting putting distance will be displayed as a user information input field. In this case, there will be two variable values: the set distance for the first area V1B and the set distance for the first area V1C, and the set distance for the first area V1C will be set based on the input values ​​for height and putting distance. In this way, the control unit 11 controls the display unit 14 so that the display elements of the order screen 100 for inputting user information change based on the usage information or grade information entered via the input unit 15.

[0059] When the customer enters information into each field on the order screen 100 and clicks the submit button (not shown), the order processing unit 16 of the order device 1 acquires the order information. After step S11 is completed, step S12 (Figure 6) begins. In addition to the items mentioned above, the order screen 100 allows for the addition of various other pieces of information, such as information regarding the wearer's (Wr) accommodative power.

[0060] In step S12, the ordering device 1 transmits the order information to the order receiving device 2 via the communication unit 13. In Figure 6, the point at which the order information is transmitted from the ordering device 1 to the order receiving device 2 is schematically shown by arrow A100. Once step S12 is completed, step S21 begins.

[0061] In the ordering device 1, the processes of displaying the order screen 100, acquiring the order information entered on the order screen 100, and transmitting the order information to the order receiving device 2 are performed by the control unit 11 of the ordering device 1 by reading a predetermined program pre-installed in the storage unit 12 into memory or the like and executing it.

[0062] In step S21, the order processing unit 26 of the order receiving device 2 receives order information from the ordering device 1 via the communication unit 23. After step S21 is completed, step S22 begins.

[0063] In step S22, the design unit 27 of the order receiving device 2 designs the eyeglass lens LS based on the received order information.

[0064] Figure 8 is a conceptual diagram showing the configuration of the design unit 27. The design unit 27 comprises a first acquisition unit 271, a second acquisition unit 272, a region setting unit 273, a target aberration setting unit 274, and an optimization unit 275.

[0065] Figure 9 is a flowchart showing the flow of step S22 in the flowchart of Figure 6. In step S221, the first acquisition unit 271 of the design unit 27 acquires the prescription data, usage information, and wearer information of the wearer Wr. The first acquisition unit 271 stores the prescription data, usage information, and wearer information from the received order information in memory or the storage unit 22 of the order receiving device 2, etc., for reference. Once step S221 is completed, step S223 is started.

[0066] In step S223, the second acquisition unit 272 of the design unit 27 acquires distance distribution data. Based on the usage information, the second acquisition unit 272 selects a distance distribution data pattern associated with the usage from among several different patterns of distance distribution data pre-stored in the storage unit 22, etc. For example, in the example in Figure 7, distance distribution data of grade 1 associated with golf is selected. After step S223 is completed, step S225 is started. In step S225, the area setting unit 273 of the design unit 27 sets the numerical values ​​of the first area V1, the second area V2, and the variable values ​​of their set distances in the distance distribution data based on the wearer information. In the example in Figure 7, the area setting unit 273 sets the set distance of the first area V1B based on the wearer Wr's height. After step S225 is completed, step S227 is started.

[0067] In step S227, the target aberration setting unit 274 of the design unit 27 sets target aberration distribution data based on the set first region V1 and set distance, etc. After step S227 is completed, step S229 is started. In step S229, the optimization unit 275 of the design unit 27 performs the optimization design of the spectacle lens LS. In this optimization design, after the shape of the spectacle lens LS is designed, a value indicating the extent to which design conditions such as residual refractive power and residual astigmatism are met is calculated, and the spectacle lens LS is redesigned as appropriate so that this value becomes the optimal value. Once design data for the shape of the spectacle lens that meets a predetermined standard is obtained, the design of the spectacle lens LS is completed. After step S229 is completed, step S23 is started.

[0068] In step S23 (Figure 6), the order receiving device 2 outputs the design data of the eyeglass lens LS designed in step S22 to the processing machine control device 3 (Figure 5). Based on the design data output from the order receiving device 2, the processing machine control device 3 sends processing instructions to the eyeglass lens processing machine 4. As a result, the eyeglass lens LS based on the design data is processed and manufactured by the eyeglass lens processing machine 4. The eyeglass lens LS manufactured by the eyeglass lens processing machine 4 is shipped to the optician, fitted into an eyeglass frame, and provided to the customer (wearer).

[0069] In the order receiving device 2, the processes of receiving order information from the ordering device 1, designing eyeglass lenses LS based on the received order information, and outputting the design data of eyeglass lenses LS to the processing machine control device 3 are performed by the control unit 21 of the order receiving device 2 by reading a predetermined program pre-installed in the storage unit 22 into memory or the like and executing it. Furthermore, the design unit 27 of the order-taking device 2 may be located in the eyeglass lens design device connected to the order-taking device 2. Also, the physical configuration of the device performing the design processing is not particularly limited, as long as the design processing of this embodiment can be performed.

[0070] The spectacle lens LS obtained using the design method described above will be explained. Here, we will use a composite sag surface, which is a hypothetical surface created by combining the shape of the side surface of the spectacle lens and the shape of the side surface of the eyeball, for the explanation.

[0071] Eyeglass lenses have a reference point for measuring prism power, which is one of the prescription values. This reference point is called the prism reference point. Depending on the manufacturer of eyeglass lenses, the prism reference point may be specified as a point called the prism reference point on the side of the lens. Alternatively, if not specifically indicated, the prism reference point coincides with the fitting point on the side of the lens. When designing eyeglass lenses, the optical axis is designed using the normal of the side of the lens at the prism reference point. In most single-vision eyeglass lenses, the prism reference point is the same point as the fitting point, but in some single-vision eyeglass lenses and progressive eyeglass lenses, where the fitting point is intentionally offset from the optical axis during design, the prism reference point is in a different position from the fitting point.

[0072] Figure 10 is a conceptual diagram illustrating the composite sag surface. The spectacle lens LS according to this embodiment has a prism reference point PRP. In this figure, the prism reference point PRP and the fitting point FP are set at different positions, but they may be set at the same position. For the shape of the spectacle lens designed in the following embodiment, the fitting point FP on the side surface S1 of the object is set as the origin and the following orthogonal coordinate system is set. The optical axis Ax is defined as the normal to the side surface S1 of the object at the prism reference point PRP on the side surface S1 of the object. The Z-axis is defined as a straight line passing through the origin and parallel to the optical axis Ax, and the direction from the side surface S1 of the object toward the side surface S2 of the eyeball is defined as the positive direction of the Z-axis. In the plane S0 that includes the origin and is perpendicular to the Z-axis, the direction upward is defined as the positive direction of the Y-axis, with the vertical direction as seen from the wearer Wr, and the direction upward is defined as the positive direction of the Y-axis, with the left-right direction as seen from the wearer Wr, and the direction to the right is defined as the positive direction of the X-axis. Furthermore, the Z-axis is defined as the axis of rotation, the angle between it and the X-axis is φ[°], the direction of rotation from the positive direction of the X-axis to the positive direction of the Y-axis is defined as the positive direction, and the height along the radial direction from the Z-axis is defined as h[mm].

[0073] Points on the object's side surface S1, the eyeball's side surface S2, and the composite sag surface S3 can all be described by their position on the surface using height h and angle φ. Hereinafter, the position of these points on the surface, indicated by h and φ, will be denoted as (h,φ). (h,φ) corresponds to the position of any point on the object's side surface S1. Let z1(h,φ) be the Z-coordinate of the point on the object's side surface S1 corresponding to position (h,φ), and let z2(h,φ) be the Z-coordinate of the eyeball's side surface S2. In this case, the composite sag surface S3 (dashed line) is a hypothetical surface whose Z-coordinate is z3 such that z3(h,φ) = z1(h,φ) - z2(h,φ), or in other words, a surface consisting of the set of points represented by Z = z3(h,φ). Figure 10 shows the position (h,φ) on the composite sag surface S3 and the circumference CL, which is the set of points where φ at height h ranges from 0° to 360°.

[0074] Let C(h,φ) be the mean curvature of the spectacle lens LS at position (h,φ) on the composite sag surface S3. The mean curvature is the sum of the two principal curvatures, which are the maximum and minimum values ​​of the normal curvature of the surface at a point on the surface, divided by 2. The sign of the normal curvature is positive when the composite sag surface is convex toward the object. Therefore, as shown in Figure 10, the mean curvature C(0,0) of the composite sag surface S3 is negative when the spectacle lens LS is a negative lens. However, when illustrating the mean curvature of the composite sag surface S3 in this specification, the mean curvature C(0,0) at position (0,0) is used as the reference, and relative values ​​obtained by subtracting C(0,0) from the mean curvature C(h,φ) at each point may be used as appropriate.

[0075] When the angle φ changes within a range of 360° from 0° to 360° at height h, the maximum value of the mean curvature C(h,φ) of the composite sag surface S3 is defined as Cmax360(h), and the minimum value as Cmin360(h). In other words, when the height h is fixed to an arbitrary value, the maximum and minimum values ​​of the mean curvature C(h,φ) when φ changes arbitrarily from 0° to 360° can be expressed as a function of height h, with the maximum value being Cmax360(h) and the minimum value being Cmin360(h).

[0076] When the angle φ at height h varies within a range of 45° from φ=φ1-22.5° to φ=φ1+22.5°, centered on a specific angle φ1 that can take any value from 0° to 360°, the maximum value of the mean curvature C(h,φ) of the composite sag surface S3 is defined as Cmax45(h,φ1), and the minimum value is defined as Cmin45(h,φ1). In other words, when the height h is fixed to an arbitrary value, and the angle φ1 is fixed to one of the values ​​from 0° to 360°, and the angle φ is varied from φ1-22.5° to φ1+22.5° centered on that angle φ1, the maximum and minimum values ​​of the mean curvature C(h,φ) can be expressed as a function of height h and angle φ1, with the maximum value being Cmax45(h,φ1) and the minimum value being Cmin45(h,φ1).

[0077] Furthermore, Cpp45(h,φ1) and Cpp360(h) are defined as values ​​obtained by the following equations (C1) and (C2). Cpp45(h,φ1)=Cmax45(h,φ1)-Cmin45(h,φ1) …(C1) Cpp360(h)=Cmax360(h)-Cmin360(h) …(C2)

[0078] In the eyeglass lens of this embodiment, there exists a height h in the range of 14 mm or more and 22 mm or less that satisfies the following (A), (B), and (C). (A)Condition (A1) is that Cpp360(h)×0.1 is Cpp45(h,φ1) or greater. Among angles φ1, the angle that satisfies condition (A1) is defined as the corresponding reference angle φ0. Multiple corresponding reference angles φ0 exist, and at least one pair of these multiple corresponding reference angles φ0 are separated from each other by 45 degrees or more. (B) At least one of the multiple corresponding reference angles φ0 that satisfy the above condition (A) is located in the range of 5° to 175°, and at least one is located in the range of 185° to 355°. In (C) and (B), when the corresponding reference angle φ0 included in 5° to 175° is φ0a, and the corresponding reference angle φ0 included in 185° to 355° is φ0b, the mean curvature C(h,φ0a) and the mean curvature C(h,φ0b) are different for all combinations of φ0a and φ0b. Here, it is preferable that all h between 14mm and 22mm satisfy the above conditions (A), (B), and (C).

[0079] Figure 11 is a graph showing an example of the mean curvature C(h,φ) at height h and angle φ on the composite sag surface S3 of the spectacle lens of this embodiment. The lines indicated by H14, H16, H18, H20, and H22 represent the mean curvature C on the circumference corresponding to heights h of 14 mm, 16 mm, 18 mm, 20 mm, and 22 mm, respectively, along the radial direction from the Z axis. The graph in Figure 11 is an example to explain the spectacle lens LS according to this embodiment, and the present invention is not limited by the specific numerical values ​​in the graph. In this example, the optical axis of the spectacle lens LS passes through the fitting point FP.

[0080] In the graphs in Figure 11, the change in mean curvature C tends to be smaller than at other angles in the angles φ in the ranges of approximately 0° to 90°, approximately 180° to 225°, and approximately 270° to 315°. This is because these ranges correspond to the first regions V1A, V1C, and V1B in the distance distribution D1 in Figure 2, respectively, and the set distance is constant in the first regions V1A, V1C, and V1B. Furthermore, the aberration balance in each of the first regions V1A, V1C, and V1B is rotationally symmetric with respect to the fitting point FP.

[0081] Consider the above conditions (A), (B), and (C). For (A), Cpp360(h) represents the range of variation obtained by subtracting the minimum value from the maximum value of the mean curvature C from 0° to 360° at height h. Cpp45(h,φ1) represents the range of variation obtained by subtracting the minimum value from the maximum value of the mean curvature C in a range of plus or minus 22.5° centered on a specific angle φ1 at height h. In other words, Cpp360(h) is an index of the range of variation of the mean curvature C over the entire angle, and Cpp45(h,φ1) is an index of the range of variation of the local mean curvature C for a specific angle that can take the range from 0° to 360°. (A) corresponds to the case where there are multiple corresponding reference angles φ0 with small local variations in mean curvature C that are separated by 45 degrees or more, based on a design based on a distance distribution in which multiple first regions V1 are set, and further based on a design based on aberration balance set for each of the multiple first regions V1.

[0082] (B) corresponds to the case where at least one first region V1 is set on the upper side of the spectacle lens LS corresponding to the angular range of 5° to 175°, and on the lower side of the spectacle lens LS corresponding to the angular range of 185° to 355°.

[0083] (C) corresponds to the case where the setting distance of the first region V1 corresponding to each of the multiple corresponding reference angles φ0 that satisfy the conditions of (A) is different.

[0084] Figure 12 is a graph showing the normalized mean curvature obtained by linearly transforming the mean curvature C to 1 and 0 for each height in Figure 11, such that the maximum value Cmax360(h) and minimum value Cmin360(h) of the mean curvature C are 1 and 0, respectively. In the following graphs, the curve showing the normalized mean curvature will simply be referred to as the curve.

[0085] Figure 13 shows the normalized mean curvature of the graphs in Figure 12, with the reference vertical axis position shifted by 0.5 for each curve so that the curves do not overlap. For H20, H18, H16, and H14, the values ​​obtained by adding 0.5, 1.0, 1.5, and 2.0 to the normalized mean curvature are shown. The portion CB plotted as a thick solid line on each curve corresponds to the corresponding reference angle φ0 that satisfies condition (A1). The arc corresponding to the 45° angle range centered on the corresponding reference angle φ0 at the height h of the spectacle lens LS is called the low curvature variation arc.

[0086] When using normalized mean curvature, the mean curvature C is normalized such that Cpp360(h) is 1. Therefore, for example, consider a point on the circumference of a circle at a radial height h from the Z-axis at an angle φ1. When the angle φ changes from φ1-0.5×45° to φ1+0.5×45° while keeping the height h constant, and the variation range of the normalized mean curvature of the composite sag surface S3 is 0.1 or less, then the angle φ1 is considered to be the corresponding reference angle φ0. In this case, the low curvature variation arc is a part of the circumference of the composite sag surface S3 at a radial height h centered on the Z-axis passing through the fitting point FP, and is an arc where φ is in the range of φ0-0.5×45° to φ0+0.5×45°.

[0087] Note that one low curvature fluctuation arc was defined to span an angular range of 45°. In the region where multiple corresponding reference angles φ0 are continuous without being separated from each other by more than 45°, multiple low curvature fluctuation arcs overlap. The condition in the latter part of (A) above, that at least one pair of corresponding reference angles φ0 are separated from each other by more than 45°, corresponds to the fact that multiple low curvature fluctuation arcs corresponding to that pair do not overlap. In the example in Figure 13, as shown by the curve showing the normalized mean curvature on the circumference of a spectacle lens LS with a height h of 14 mm, low curvature fluctuation arcs with different mean curvatures exist at three locations around φ 60°, 210°, and 280°, respectively, without overlapping. Also, as shown by the curve showing the normalized mean curvature on the circumference of a spectacle lens LS with a height h of 22 mm, it is shown that low curvature fluctuation arcs with different mean curvatures exist at two locations around φ 45° and 295°, respectively, without overlapping.

[0088] In the eyeglass lens LS according to this embodiment, it is desirable that at least one corresponding reference angle φ0c exists at at least one height h from 14 mm to 22 mm, where the angle φ is in the range of 175° to 265°, or a corresponding reference angle φ0d exists at a range of 275° to 365°, i.e., a range of 5°. When both corresponding reference angles φ0c and φ0d exist, it is desirable that the distribution of the angular ranges in which corresponding reference angles φ0c and φ0d exist is asymmetric with respect to the Y axis. This is based on the fact that, in the example of distance distribution D1, the positions of the first region V1B and V1C exist asymmetrically on both sides of the Y axis. In the example of Figure 13, as shown by the curve representing the normalized mean curvature on the circumference of the eyeglass lens LS from 14 mm to 18 mm h, corresponding reference angles φ0c and φ0d exist around φ 210° and around φ 285°, respectively, and the distribution of the angular ranges in which corresponding reference angles φ0c and φ0d exist differs with respect to φ=270°, which corresponds to the position of the Y axis. As a result, the LS spectacle lens is designed to have minimal residual aberration variation, even if it is asymmetrical around φ=270°, resulting in a stable aberration balance.

[0089] In the eyeglass lens LS according to this embodiment, at least one of the corresponding reference angles φ0 is preferably located in the angular range from 270-22.5[°] to 270+22.5[°], or in other words, in the angular range from 247.5° to 292.5°, at least one of the corresponding reference angles h from 14 mm to 22 mm, preferably all of the heights h. Let θ0e be the corresponding reference angle located in this angular range. Based on the distance distribution D1 etc. located at the bottom of the first region V1 of the eyeglass lens LS, such an eyeglass lens is provided. In the example of the eyeglass lens LS shown in Figure 13, the corresponding reference angle φ0e is also located in this angular range.

[0090] The eyeglass lens LS in Figure 13 is a hyperopic eyeglass lens with a prescribed spherical power of +4D and a prescribed astigmatism power of 0D, and its aberration balance was optimized by setting the same aberration balance across the entire surface of the eyeglass lens LS. The sum of the equivalent spherical power of the eyeglass lens LS, which is the prescribed spherical power, and half of the prescribed astigmatism power is +4D. In the example in Figure 13, the normalized mean curvature at the corresponding reference angle φ0e, where φ is around 280° on the circumference of the eyeglass lens LS with a height h of 14mm, is approximately 1, which is greater than the normalized mean curvature of approximately 0.2 at φ is around 100° after rotating by 180° (note that in Figure 13, the values ​​on the vertical axis are shifted for each height h). The same is true for the circumference of the eyeglass lens LS at other heights h. This is the trend when the aberration balance is set to be the same across the entire surface.

[0091] The example in Figure 13 was obtained by designing the lens so that the aberration balance is constant in each of the first regions V1A, V1B, and V1C of the distance distribution D1, and the variation in the aberration balance in the φ direction is suppressed in each of the first regions V1. As shown in Figure 13, by designing the spectacle lens shape so that a low curvature variation arc exists in the φ range corresponding to the first region V1, the variation in the aberration balance in the φ direction can be suppressed.

[0092] In eyeglass lenses, especially for lenses with high prescriptions, residual aberrations increase with distance from the prism reference point through which the optical axis passes. Therefore, for eyeglass lenses where the fitting point is relatively close to the prism reference point, for example, only a few millimeters away, the magnitude of residual aberration generally depends on the height along the radial direction from the Z-axis passing through the fitting point, and it can be considered that the higher this height, the greater the residual aberration. Now, in the low-height portion, that is, the portion close to the fitting point, the influence of differences in prescription and design of the eyeglass lens on the magnitude of residual aberrations of the light rays passing through it is small, and therefore the variation in aberration balance is also small. On the other hand, in the portion where this height is above a certain level, the residual aberrations of the light rays passing through it become too large, depending on differences in prescription and design of the eyeglass lens, and the wearer cannot obtain sufficient vision, so that portion is not important as an eyeglass lens. Also, portions that are too high to fit in an eyeglass frame are not important. This is also true for eyeglass lenses where the fitting point is relatively far from the prism reference point. Therefore, when considering the average curvature of the composite sag surface, the portion where this height is neither too low nor too high is important. Specifically, this important portion is the range of height h from 14 mm to 22 mm, where it largely overlaps with the stable field of view. The importance of this range of height h can be seen from the fact that the frame size of the examination lenses used when eye examinations are performed in opticians, and the frame size of the trial lenses used in combination with examination lenses when trying out the fit of progressive power spectacle lenses, are approximately within this range. Thus, the more low-curvature fluctuation arcs are included in the height h range of 14 mm to 22 mm in spectacle lens LS, the more spectacle lens with less variation in aberration balance in the portion corresponding to the first region V1 can be provided.

[0093] According to the above-described embodiment, the following effects and advantages can be obtained. (1) The method for designing eyeglass lenses according to this embodiment includes: acquiring application information (first information) about the intended use of the eyeglass lens LS to be designed; acquiring wearer information (second information) about the gaze, location, and equipment used by the wearer Wr of the eyeglass lens L in the above-mentioned application, as well as at least one of the wearer Wr's body parts; acquiring distance distribution data based on the first information that indicates the number, position, shape, and size of a plurality of first regions V1 to be set on the surface of the eyeglass lens LS, and the distance to the object viewed through each first region V1 (set distance); setting a variable numerical value among the numerical values ​​indicating the number, position, shape, size, and set distance of the plurality of first regions V1 in the distance distribution data based on the second information, setting a plurality of first regions V1 and set distances on the surface of the eyeglass lens LS; and setting a target aberration distribution of the eyeglass lens LS based on the set plurality of first regions V1 and set distances. This provides eyeglass lenses LS that are suitable for various situations when the wearer Wr views an object.

[0094] (2) In the design method for eyeglass lenses of this embodiment, the positions and set distances of the multiple first regions V1 are set asymmetrically with respect to a vertical plane that includes a straight line passing through the fitting point FP and rotation point of the eyeglass lens LS. As a result, even when the position of the object in the field of view is asymmetrical, the wearer Wr can clearly see the object through the eyeglass lens LS.

[0095] (3) In the design method for eyeglass lenses of this embodiment, a first region V1C for viewing the same object based on use such as golf can be set on the left side as seen from the wearer Wr of the left-eye lens and on the left side as seen from the wearer Wr of the right-eye lens, or on the right side as seen from the wearer Wr of the left-eye lens and on the right side as seen from the wearer Wr of the right-eye lens. This allows the wearer Wr to clearly see an object on one side of the field of view through the eyeglass lens LS in binocular vision.

[0096] (4) In the design method for eyeglass lenses of this embodiment, in each of the multiple first regions V1, the distribution of values ​​(aberration balance) that indicate the relative magnitude of the target residual refractive power and target residual astigmatism to one is rotationally symmetric with respect to a straight line passing through the fitting point FP of the eyeglass lens LS and the design rotation point, or with respect to the optical axis of the eyeglass lens LS. This makes it possible to provide eyeglass lenses LS with rotationally symmetric aberration characteristics that feel less uncomfortable to the wearer Wr.

[0097] (5) The method for designing eyeglass lenses of this embodiment includes setting a second region V2 on the surface of the eyeglass lens LS to be designed, the second region V2 is set between two first regions V1 with different set distances, and the set distance in the second region V2 changes to connect the different set distances. This makes it possible to optimize the design of the eyeglass lens even at positions of the eyeglass lens LS where there are no particularly anticipated objects in the application of the eyeglass lens LS, and thus it is possible to achieve performance sufficient to sell as an eyeglass lens over the entire sufficiently wide area of ​​the eyeglass lens LS that fits within an eyeglass frame.

[0098] (6) In the design method for eyeglass lenses of this embodiment, a third region V3 may be set inside the second region V2, in which the change in the setting distance in the direction perpendicular to the line of sight trajectory may be set to be smaller than the change in the setting distance in the direction along the line of sight trajectory, based on the frequency with which the wearer's line of sight Wr passes over the surface of the eyeglass lens LS. This allows objects in the line of sight trajectory that are frequently used to be seen without distortion.

[0099] (7) In the eyeglass lens design method of this embodiment, the set distance in at least the second region V2 can be represented by a spline function. This allows for efficient interpolation of the set distance value in the distance distribution data.

[0100] (8) In the method for designing eyeglass lenses of this embodiment, the second information may include at least one of the following: the height of the wearer Wr; the posture of the wearer Wr when the wearer Wr is engaged in activities such as golf; the position or range of the eyeglass lens LS through which the wearer Wr's line of sight passes; and information about the position of the wearer Wr or the object being viewed. This allows the wearer Wr to see objects more clearly through the eyeglass lens LS, in accordance with these characteristics of the wearer Wr.

[0101] (9) In the design method for eyeglass lenses of this embodiment, the above application can be golf putting, and of the multiple first regions V1, the entire area of ​​at least one first region V1 (first region V1B) set at a set distance of 85% to 90% of the wearer Wr's height may be positioned below the fitting point FP of the eyeglass lens LS, and the entire area of ​​at least one first region V1 (first region V1C) set at a set distance of 2m to 4m may be positioned to the left and right of the fitting point FP from the wearer Wr's perspective, on the side opposite to the wearer Wr's dominant arm. This allows the wearer Wr to clearly see the object through the eyeglass lens LS when putting in golf, etc.

[0102] (10) The method for manufacturing eyeglass lenses according to this embodiment involves manufacturing eyeglass lenses LS designed by the eyeglass lens design method described above. This provides eyeglass lenses LS that are suitable for various situations when the wearer Wr views an object.

[0103] (11) The single-vision spectacle lens according to this embodiment is a spectacle lens LS manufactured by the spectacle lens manufacturing method described above. This provides a single-vision spectacle lens that is suitable for various situations when the wearer Wr views an object.

[0104] (12) The eyeglass lens design apparatus (ordering apparatus 2, etc.) according to this embodiment includes: a first acquisition unit 271 that acquires application information (first information) about the application of the eyeglass lens LS to be designed, the line of sight, location, and equipment used by the wearer Wr of the eyeglass lens LS in the above application, and wearer information (second information) about at least one of the wearer Wr's body parts; a second acquisition unit 272 that acquires distance distribution data indicating the number, position, shape, and size of a plurality of first regions V1 to be set on the surface of the eyeglass lens LS, and the distance to an object viewed through each first region V1, based on the first information; a region setting unit 273 that sets a variable value among the numerical values ​​indicating the number, position, shape, size, and set distance of the plurality of first regions V1 in the distance distribution data, based on the second information, and sets a plurality of first regions V1 and set distances on the surface of the eyeglass lens LS; and a target aberration setting unit 274 that sets a target aberration distribution of the eyeglass lens LS based on the set plurality of first regions V1 and set distances. This makes it possible to provide eyeglass lenses LS that are suitable for various situations in which the wearer Wr views an object.

[0105] (13) The eyeglass lens ordering and receiving system according to this embodiment comprises the above-described eyeglass lens design device (ordering device 2, etc.), an eyeglass lens ordering device 1 equipped with an input unit 15 for receiving input of first information and second information, and a transmission unit (communication unit 13) for transmitting the first information and second information, and an eyeglass lens order receiving device equipped with a receiving unit (communication unit 23) for receiving the first information and second information. This makes it possible to provide eyeglass lenses LS that are suitable for various situations when the wearer Wr views an object.

[0106] (14) The spectacle lens according to this embodiment has a pair of refractive surfaces, an object side surface S1 and an eyeball side surface S1, and at least one of the refractive surfaces is a non-rotationally symmetric aspherical surface, with the fitting point FP set on the object side surface S1 as the origin, the Z-axis being a straight line passing through the origin and parallel to the normal of the object side surface S1 at the prism reference point PRP, and the direction from the object side surface S1 toward the eyeball side surface S2 being the positive direction of the Z-axis, and within a plane perpendicular to the Z-axis, the direction upward is the positive direction of the Y-axis with the vertical direction as seen from the wearer Wr as the vertical direction, the X-axis being the positive direction to the right with the horizontal direction as seen from the wearer Wr as the horizontal direction, and the Z-axis being the axis of rotation, with the angle between the X-axis and the Z-axis being φ[°], and rotating from the positive direction of the X-axis toward the positive direction of the Y-axis. When the case where the object is moving is considered positive, and the height along the radial direction from the Z axis is h [mm], and the height h and angle φ each correspond to the position of an arbitrary point on the object's side surface S1, let z1(h,φ) be the Z coordinate of the point at height h and angle φ on the object's side surface S1, and let z2(h,φ) be the Z coordinate of the point at height h and angle φ on the eyeball's side surface S2, and let z3(h,φ) = z1(h,φ) - z2(h,φ) be the Z coordinate of the point at height h and angle φ, then a hypothetical surface is defined as the composite sag surface S3, where the mean curvature of the composite sag surface S3 at height h and angle φ is C(h,φ), and when the angle φ changes within a range of 360° from 0° to 360°, the mean curvature of the composite sag surface S3 is C(h,φ). Let the maximum value be Cmax360(h) and the minimum value be Cmin360(h). At height h, when the angle φ can take any value from 0° to 360°, and changes within a range of 45° from φ=φ1-22.5° to φ=φ1+22.5°, the maximum value of the mean curvature C(h,φ) of the composite sag surface S3 be Cmax45(h,φ1) and the minimum value be Cmin45(h,φ1). Let Cpp45(h,φ1) and Cpp360(h) be the values ​​obtained by the above formulas (C1) and (C2). At least one height h that is 14 mm or more and 22 mm or less, Cpp360(h) × 0.If we define the angle φ1 that satisfies condition (A1) that 1 is greater than or equal to Cpp45(h,φ1), then there are multiple corresponding reference angles φ0. At least one pair of these multiple corresponding reference angles φ0 are separated by at least 45 degrees from each other. At least one of these pairs of corresponding reference angles φ0 is φ0a, which falls between 5° and 175°, and at least one is φ0b, which falls between 185° and 355°. C(h,φ0a) and C(h,φ0b) are different. This allows us to provide spectacle lenses LS that are suitable for various situations in which the wearer Wr views an object.

[0107] (15) In the eyeglass lens according to this embodiment, for all h between 14 mm and 22 mm, there are multiple corresponding reference angles φ0 that satisfy condition (A1), at least one pair of the multiple corresponding reference angles φ0 are separated by 45 degrees or more from each other, at least one of the multiple corresponding reference angles φ0 that satisfy condition (A1) is a corresponding reference angle φ0a included in the range from 5° to 175°, and at least one is a corresponding reference angle φ0b included in the range from 185° to 355°, and C(h,φ0a) and C(h,φ0b) are different. This makes it possible to provide an eyeglass lens LS that is suitable for various situations when the wearer Wr views an object over a wide range centered on the fitting point FP of the eyeglass lens LS.

[0108] (16) In the eyeglass lens according to this embodiment, at least one of the corresponding reference angles φ0 is either a corresponding reference angle φ0c that is in the range of 175° to 265°, or a corresponding reference angle φ0d that is in the range of 275° to 5°. This makes it possible to provide an eyeglass lens LS that is suitable for various situations when viewing an object through the lower left or right center of the eyeglass lens LS.

[0109] (17) In the spectacle lens according to this embodiment, at least one of the multiple corresponding reference angles φ0 is a corresponding reference angle φ0e that is in any angle within the range of 247.5 (270 - 22.5)° to 292.5 (270 + 22.5)°. This makes it possible to provide a spectacle lens LS with little variation in aberration balance over a wide range below the prism reference point of the spectacle lens LS.

[0110] The following modifications are also within the scope of the present invention and can be combined with the embodiments and other modifications described above. Parts indicated by the same reference numerals as in the embodiments described above have the same function and their descriptions are omitted as appropriate.

[0111] (Variation 1) In the above embodiment, in the first regions V1A, V1B, and V1C (Figure 2), where different setting distances are set, the aberration balance may be set to different values ​​based on the setting distance. The setting distance for the first region V1A is 0D (infinity). Therefore, in the first region V1A, the aberration balance is set to an appropriate level so that the influence of residual refractive power and residual astigmatism on wearing comfort is minimized, so that the wearer Wr can see comfortably without using accommodative power. The first regions V1B and V1C are regions where the wearer Wr uses accommodative power for near vision, and residual refractive power can be reduced by accommodative power, so the need to consider the effect of residual refractive power is lower compared to the first region V1A. From this viewpoint, in the first regions V1B and V1C, the aberration balance can be set to reduce residual astigmatism compared to the first region V1A.

[0112] Aberrations in spectacle lenses tend to increase with distance from the fitting point FP. Therefore, in the first region V1A and the first region V1B, it is preferable to compare the aberration values ​​at positions where the magnitude of the rotation angle taken from a straight line passing through the rotation point and the fitting point FP is the same, centered on the design rotation point. The rotation angle can be taken in any direction with respect to the straight line. At positions where the magnitude of the rotation angle is the same, it is preferable that the target residual astigmatism be set smaller in the first region V1B and V1C, where a finite set distance is set, than in the first region V1A, where the set distance is set to infinity.

[0113] Figure 14 is a graph showing an example of the normalized mean curvature of the composite sag surface at height h and angle φ for the spectacle lens LS according to this modified example. The curves H14, H16, H18, H20, and H22 represent the normalized mean curvature on the circumference corresponding to heights h of 14 mm, 16 mm, 18 mm, 20 mm, and 22 mm along the radial direction from the Z axis, respectively. To show the curves without overlapping, the reference position on the vertical axis is shifted, and for H20, H18, H16, and H14, values ​​of 0.5, 1.0, 1.5, and 2.0 are shown added to the normalized mean curvature, respectively. The portion CB plotted as a thick solid line on each curve corresponds to the corresponding reference angle φ0 that satisfies condition (A1). The graph in Figure 14 is an example to explain the spectacle lens LS according to this modified example, and the present invention is not limited by the specific numerical values ​​in the graph. Here, the optical axis of the spectacle lens LS passes through the fitting point FP.

[0114] As can be seen from Figure 14, in this example of the LS spectacle lens, at all heights h from 14 mm to 22 mm, there are at least two low-curvature variable arcs with different average curvatures of the composite sag surface, located around φ80° and around 290°.

[0115] Let Se be the equivalent spherical power, which is the sum of the prescribed spherical power of the spectacle lens LS and half of the prescribed astigmatic power. Let φ0e be the corresponding reference angle φ0 existing in the angular range from 270 - 22.5 [°] to 270 + 22.5 [°], that is, in the angular range from 247.5° to 292.5°. In this case, for the spectacle lens LS, at least one or preferably all heights h from 14 mm to 22 mm, when the transmitted spherical power Se is positive, it is preferable that for the mean curvature C, C(h, φ0e) < C(h, φ0e - 180°) is satisfied, and when the transmitted spherical power Se is negative, it is preferable that C(h, φ0e) > C(h, φ0e - 180°) is satisfied. Thereby, below the spectacle lens used for near vision, a spectacle lens LS with an aberration balance that better corrects the residual spherical aberration regardless of the prescribed power can be provided compared to the upper part used for distant vision.

[0116] In the example of the spectacle lens LS in FIG. 14, at any height h, the normalized mean curvature at the corresponding reference angle φ0 around 290° for φ is smaller than the normalized mean curvature around 110° for φ. This is a characteristic of the mean curvature of the combined toric surface for h and φ corresponding to the first region V1 of the spectacle lens LS where the distance to the viewing object is closer, so that the residual spherical aberration becomes smaller in the first region V1 of the spectacle lens LS with a closer distance to the viewing object in terms of the aberration balance during design. This characteristic can be achieved by designing the spectacle lens LS as follows. When the equivalent spherical power is positive, for the first region V1 with a closer distance to the viewing object and a smaller residual spherical aberration in terms of the aberration balance, the curvature of the corresponding combined toric surface S3 is designed to be smaller compared to the region obtained by rotating the first region V1 180° around the origin. And when the equivalent spherical power is negative, for the first region V1 with a closer distance to the viewing object and a smaller residual spherical aberration in terms of the aberration balance, the curvature of the corresponding combined toric surface S3 is designed to be larger compared to the region obtained by rotating the first region around the origin 180°.

[0117] In this modified method for designing spectacle lenses, in the spectacle lens LS, at the same position where the magnitude of the rotation angle taken from the straight line passing through the design rotation point and fitting point FP is the same, the target residual astigmatism is set smaller in the first region V1 with a finite set distance than in another first region V1 with a more distant set distance. As a result, the wearer Wr can see objects more clearly through the first region V1 with a finite set distance.

[0118] In the spectacle lens relating to this modification, if Se is the sum of the prescribed spherical power and half of the prescribed astigmatism power of spectacle lens LS, then when Se is positive, C(h,φ0e)<C(h,φ0e-180°)であり、Seがマイナスのときは、C(h,φ0e)> The angle is C(h,φ0e-180°). This makes it possible to provide eyeglass lenses LS with a better aberration balance, where residual astigmatism is corrected better in the lower part of the lens used for near vision than in the upper part used for far vision, regardless of the prescription.

[0119] (Modification 2) In the above-described embodiment, the spectacle lens LS was designed using a left-right asymmetrical distance distribution D1. However, if the degree of left-right asymmetry in the optical properties of the spectacle lens is large, the wearer Wr may feel uncomfortable immediately after putting on the spectacle lens. In the distance distribution D1 of the above-described embodiment, since the set distances are set asymmetrically, if the set distances between multiple first regions V1 differ drastically, the wearing comfort may deteriorate. From this viewpoint, this possibility can be reduced by setting regions corresponding to the first region V1C on both sides.

[0120] Figure 15 is a conceptual diagram showing the distance distribution D2 of this modified example. The distance distribution D2 comprises a first region V1A1, a first region V1B1, a first region V1C, a first region V1D, a second region V2h, a second region V2i1, a second region V2j, a second region V2k, and a second region V2l.

[0121] The first region V1D, the second region V2k, and the second region V2l are formed in positions symmetric to the first region V1C, the second region V2j, and the second region V2h, respectively, with respect to the line Ly that extends vertically through the fitting point FP. Preferably, the set distances in the first region V1D, the second region V2k, and the second region V2l are also set symmetrically with respect to the line Ly. In particular, it is preferable that the set distance of the first region V1D be the same as or substantially the same as the set distance of the first region V1C.

[0122] The first region V1A1, the first region V1B1, and the second region V2i1 are similar to the first region V1A, the first region V1B, and the second region V2i of the above-described embodiment, and it is preferable that they have the same position, shape, and setting distance as the first region V1A, the first region V1B, and the second region V2i of the above-described embodiment, except that a part of them is set as the first region V1D, the second region V2k, and the second region V2l.

[0123] It is preferable that the X coordinates x3 at the left end and x4 at the right end of the second region V2k are equal in absolute value to the X coordinates x2 at the right end and x1 at the left end of the second region V2j, respectively. It is preferable that the Y coordinates y1 at the top end and y2 at the bottom end of the second region V2l are equal to the Y coordinates y1 at the top end and y2 at the bottom end of the second region V2h, respectively.

[0124] It is preferable to use the same distance distribution data for both the left-eye lens and the right-eye lens in the LS spectacle lens.

[0125] In this modified design method for eyeglass lenses, a first region V1 for viewing the same object based on uses such as golf is set on the left side of the left eye lens and the left side of the right eye lens, as well as on the right side of the left eye lens and the right side of the right eye lens. The first region V1C set on the left side and the first region V1D set on the right side are in symmetrical positions. This reduces discomfort caused by left-right asymmetry when wearing eyeglass lenses LS.

[0126] (Variation 3) In the above-described embodiment, the boundaries between each region, which include multiple first regions V1 and multiple second regions V2, extended in a direction along the X-axis or Y-axis in the distance distribution. However, the boundaries between each region can be configured to extend in any direction.

[0127] Figure 16 is a conceptual diagram showing the distance distribution D3 of this modified example. Distance distribution D3 comprises a first region V1A2, a first region V1B2, and a first region V1C1. The first region V1A2 is the region for long-distance viewing during golf, and its set distance is the same as that of the first region V1A described above. The first region V1B2 is the region for focusing on the ball B during address, etc., and its set distance is the same as that of the first region V1B described above. The first region V1C1 is the region for viewing the cup Cp or the grain of the grass during putting, and its set distance is the same as that of the first region V1C described above.

[0128] Each region in distance distribution D3 is defined by boundary lines Lθ1, Lθ2, and Lθ3 that radiate from point P in distance distribution D3. Let the x-coordinate of point P be xp and the y-coordinate of point P be yp. In the following, the reference direction for defining the angles of boundary lines Lθ1, Lθ2, and Lθ3 is the positive direction of the x-axis (rightward in Figure 11). An angle is considered 0° in the reference direction, and an angle is considered positive in the counterclockwise direction. The first boundary line Lθ1 between the first region V1A2 and the first region V1B2 extends from point P in the direction of the first angle θ1. The second boundary line Lθ2 between the first region V1B2 and the first region V1C1 extends from point P in the direction of the second angle θ2. The third boundary line Lθ3 between the first region V1C1 and the first region V1A2 extends from point P in the direction of the third angle θ3.

[0129] The coordinates x1 and y1 of point P, and at least one of the first angle θ1, second angle θ2, and third angle θ3, may be variable or fixed. If these values ​​are fixed, they can be set as follows. If these values ​​are variable, they can be set based on the characteristics of the wearer Wr from a similar perspective.

[0130] Let's consider the first boundary line Lθ1. When moving the line of sight vertically from the vicinity of the fitting point FP in the first region V1A2, distortion of the field of view is undesirable because it causes errors in spatial recognition up to the cup Cp. Therefore, the first boundary line Lθ1 needs to be substantially horizontal, and the first angle θ1 is preferably 0°. Also, the Y coordinate yp of point P is preferably between y3 and y4 in the above embodiment, so for example, it is set to -7mm, which corresponds to y4.

[0131] Let's consider the second boundary line Lθ2. Similar to the embodiment described above, the line of sight may shift from ball B to cup Cp during putting, and it is preferable that the distortion of the field of view at this time be low. Therefore, it is preferable that the set distance does not substantially change in the vertical direction (Y-axis direction) in the vicinity of the second boundary line Lθ2, and the second angle θ2 is more preferably 270°. Also, it is preferable that the X coordinate xp of point P is between x1 and x2 in the embodiment described above, so for example, it is set to -7mm, which corresponds to x1, the right end of the first region V1C.

[0132] Let's consider the third boundary line Lθ3. In order to see a wide area from the ball B to the cup Cp or an arbitrarily defined object in the direction from which the ball B is launched when putting, it is desirable to widen the first region V1C1. However, as in this modified example, priority may be given to securing a wide first region V1A2, and the distance distribution D3 may be configured so that region A roughly includes up to a position of 45 degrees to the left, which corresponds to the left edge of the stable gaze field. In this case, the first angle θ3 can be 160 degrees.

[0133] In distance distribution D3, the second region V2 is not defined. In cases like distance distribution D3, where the difference in the set distances between two adjacent first regions V1 is relatively small, for example not exceeding 1D, the influence on the lens optimization design is small, and therefore the second region V2 can be omitted. Furthermore, this modified example shows how the shape of the first region V1 is determined by determining the first angle θ1, the second angle θ2, and the third angle θ3. In other words, the shape of the first region V1 can be changed by changing the first angle θ1, the second angle θ2, and the third angle θ3 to different angles. Alternatively, the shape of the first region V1 may be changed by methods other than changing the angle of the boundary line, such as changing the coordinates of point P. The first angle θ1, second angle θ2, and third angle θ3 can be appropriately changed based on the characteristics of the wearer's eye, such as the position of the wearer's rotation point, the position of objects and the priority of how those objects appear in the intended use of the spectacle lens LS, or wearing parameters such as the model of the spectacle lens LS and its tilt angle. For example, by setting the first angle θ1 and second angle θ2 to a range of -20° to +20° or -10° to +10° from the values ​​exemplified above, the apparent deviation of the first angle θ1 and second angle θ2 due to the tilt angle and curvature angle of the spectacle lens LS can be corrected. Furthermore, by setting the third angle θ3 to a range of -70° to +20° from the values ​​exemplified above, it is possible to accommodate changes in the priority of the first region V1A2 and V1C1.

[0134] (Modification 4) In the above-described embodiment, the use of the spectacle lens LS was described as the wearer Wr playing golf, but the use of the spectacle lens LS may also be described as the wearer Wr riding a bicycle. In particular, when the wearer Wr rides a bicycle for cycling competition, using the spectacle lens LS for that purpose is effective and preferable. Furthermore, the following modifications for bicycles are also applicable when the wearer Wr is riding a motorcycle, and can be applied to two-wheeled vehicles including bicycles and motorcycles.

[0135] Figure 17 is a conceptual diagram showing the distance distribution D4 of this modified example. The distance distribution D4 comprises a first region V1A3, a first region V1B3, and a second region V2i2. A fitting point FP is located in the second region V2i2.

[0136] Here, we consider the use of eyeglass lenses LS for riding bicycles that travel at relatively high speeds, such as road bikes (called road racers in Japan and other countries). In cycling competitions using such bicycles, a bicycle instrument called a cycle computer, which displays the bicycle's position, distance traveled, speed, and other riding conditions using GPS, is often installed on the handlebars or a support attached to the handlebars, either directly with fixing bands or via a mounting bracket. The instrument is either a dedicated product or a mobile device (smartphone, etc.) equipped with GPS. While riding, cyclists keep a wide field of vision of more than 10 meters ahead, and at the appropriate time and moment, they shift their gaze to the handlebars where the instrument is located to read the display, and then return their gaze to the road ahead. Therefore, if the aberration characteristics of eyeglass lenses LS are poor when viewing the instrument, it will take time to read the display, which could lead to accidents due to inattention to the road ahead. Accordingly, it is desirable to provide eyeglass lenses LS that provide the visual acuity necessary to read the information in the shortest possible time. Furthermore, if the intended use of the LS eyeglass lens is for the wearer Wr to ride a motorcycle, the instruments that display the riding conditions include the speedometer and other instruments that are pre-installed on the motorcycle. The locations where the instruments are installed also include the support posts and meter panels that secure the installed speedometer and other instruments.

[0137] The first region V1A3 is the area used by a cyclist wearing eyeglass lenses LS to view distant objects in front of their field of vision. When riding a road bike, the wearer Wr assumes a forward-leaning posture, so they view distant objects through a region even higher than the fitting point of the eyeglass lenses. The position of the eyeglass lenses used to view an object with a refractive power of 0.1D (10m), which can be considered nearly infinity, from the perspective of a cyclist's posture while riding. The results showed that a position approximately 2mm or more above the fitting point of the eyeglass lenses is used. Therefore, it is preferable to set the Y coordinate y10 of the lower end of the first region V1A3 to approximately 2mm. The setting distance of the first region V1A3 can be set to 0D to 0.1D, etc., for distance viewing, with 0D being preferred. Furthermore, it is desirable that the centroid CM of region V100, which is included in the circle C100 with a radius of 30 mm centered on the fitting point FP within the first region V1A3, be positioned above the fitting point FP. In this case, the first region V1A3 may include the fitting point FP, not limited to the configuration shown in Figure 17.

[0138] The first region V1B3 is the area for viewing instruments that display the riding status of the bicycle, which are located on or near the handlebars. It is preferable that the entire area of ​​the first region V1B3 is positioned below the fitting point FP. The distance from the eyes to the instruments and the downward rotation angle were investigated from the posture of a racer while riding a bicycle. As a result, the shortest distance from the eyes to the instruments was 25 cm, and it was approximately 30 cm to 50 cm, and the downward rotation angle was often 25 degrees or more. Assuming that the spectacle lens LS is a thin, parallel-plane plate, and the distance from the vertex of the rear surface of the spectacle lens LS to the rotation center of the eyeball is 25 mm, a downward rotation angle of 25 degrees corresponds to a Y coordinate of approximately -12 mm in the coordinate system of Figure 17. Therefore, it is preferable that the Y coordinate y20 at the upper end of the first region V1B3 be approximately -12 mm. The set distance of the first region V1B3 is preferably between 4D, which corresponds to the shortest case of 25 cm, and 3.3D, which corresponds to an approximate case of 30 cm, and 2D, which corresponds to 50 cm.

[0139] The second region V2i2 is positioned between the first region V1A3 and the first region V1B3. The set distance of the second region V2i2 is set to either linearly connect the set distances of the first region V1A3 and the first region V1B3, or to smoothly connect them using an arbitrary mathematical formula.

[0140] Let's consider the aberration balance settings in this modified example. For the first region V1A3, as with ordinary single-vision spectacle lenses, an aberration balance that minimizes the adverse effects of residual refractive index and residual astigmatism is desirable. For the first region V1B3, if the wearer's accommodative power is sufficiently high, an aberration balance that prioritizes keeping astigmatism sufficiently low is desirable. Specifically, if focusing from 25cm or 30cm to 50cm, which is the setting distance for the first region V1B3, can be achieved using about half of the wearer's accommodative power, then the wearer has sufficient accommodative power and can focus quickly. Therefore, an aberration balance that prioritizes keeping residual astigmatism low is desirable.

[0141] However, if the wearer's accommodative power is weaker than this, a shift in residual refractive power to the negative side requires extra adjustment, which increases the time it takes to focus and interpret the instrument's display. Therefore, in such cases, it is desirable to prioritize aberration balance that prevents the residual refractive power from shifting to the negative side rather than suppressing residual astigmatism.

[0142] In practice, aberrations in spectacle lenses tend to increase with distance from the fitting point FP. Therefore, it is preferable to compare the aberration values ​​in multiple first regions V1 at positions where the magnitude of the rotation angle taken from a straight line passing through the rotation point and the fitting point FP is the same, centered on the design rotation point. The rotation angle can be taken in any direction relative to the above straight line. For example, in spectacle lenses for correcting hyperopia where the spherical power is a positive value, the residual refractive power tends to be on the negative side, so it is desirable to adjust the aberration balance based on the wearer's prescription. More preferably, at the same rotation angle, it is preferable that in the first region V1B3 where a finite set distance is set, the target residual refractive power is set to a more positive value than in the first region V1A3 where the set distance is set to infinity.

[0143] Furthermore, if the wearer's accommodative power is too low to focus from 25cm or 30cm to 50cm, it is preferable to design the spectacle lens LS as a progressive power spectacle lens, such as a bifocal lens, with a set add power. This modified example can also be applied to progressive power spectacle lenses.

[0144] In this modified design method for eyeglass lenses, the intended use of the eyeglass lens LS is for riding a motorcycle. Of the multiple first regions V1, the center of gravity CM of region V100, which is included within a radius of 30 mm around the fitting point FP in the first region V1A3 where the set distance is set to infinity, is positioned above the fitting point FP of the eyeglass lens LS. Furthermore, the entire region V1B3, which is set to a distance of 25 cm to 50 cm and is used to view the handlebars or instruments near the handlebars that display the riding status of the motorcycle, is positioned below the fitting point FP. As a result, when the wearer Wr is riding a motorcycle, the wearer Wr can clearly see objects through the eyeglass lens LS.

[0145] In this modified method for designing spectacle lenses, in the spectacle lens LS, at the same position as the rotation angle taken from the straight line passing through the design rotation point and fitting point FP, the target residual refractive power can be set to a more positive value in the first region V1B3 where a finite set distance is set, compared to the first region V1A3 where the set distance is set to infinity. This makes it possible to provide spectacle lenses that allow the wearer Wr to see objects clearly through the first region V1 where a finite set distance is set, more reliably.

[0146] (Variation 5) In the above-described modified example 4, a first area V1 for checking the side or rear may also be set. This modified example can also be applied to two-wheeled vehicles, including motorcycles, in addition to bicycles.

[0147] Figure 18 is a conceptual diagram showing the distance distribution D5 related to this modified example. The distance distribution D5 comprises a first region V1A3, a first region V1B4, a first region V1C2, a first region V1D1, a second region V2h1, a second region V2i3, a second region V2j1, a second region V2k1, and a second region V2l1.

[0148] The first region V1C2 is the region for viewing a bicycle traveling alongside the wearer Wr to the left or slightly behind the left. The first region V1D1 is the region for viewing a bicycle traveling alongside the wearer Wr to the right or slightly behind the right. The wearer Wr can move their head or eyeballs as appropriate to look to the side or slightly behind through the first region V1C2 or first region V1D1.

[0149] When looking directly to the side, it is natural to use the same height as the fitting point FP of the spectacle lens LS. Therefore, it is preferable that the Y coordinate y30 of the upper end of the first region V1C2 and the first region V1D1 be 0 mm or greater, which is the same height as the fitting point FP. For example, y30 is set to 0 mm. Here, assuming a distance of 1 m to a bicycle running alongside directly to the side, and a height of the eyeball or the spectacle lens LS of 1.5 m, we assume that the position where the tire of the parallel-running bicycle touches the ground is viewed through the first region V1C2 or the first region V1D1. In this case, the lateral component of the rotation angle of the eyeball when viewing this position instantaneously using only eye movement is approximately 34 degrees. Assuming the spectacle lens LS is a thin, parallel-plane plate, and the distance from the vertex of the rear surface of the spectacle lens LS to the center of rotation of the eyeball is 25 mm, it is preferable to convert this rotation angle to the X coordinate of the spectacle lens LS so that the X coordinate x10 at the right end of the first region V1C2 is -17 mm and the X coordinate x40 at the left end of the first region V1D1 is 17 mm. When the wearer Wr turns diagonally backward, they can see through the portion of the first region V1C2 and the first region V1D1 below the fitting point FP.

[0150] The setting distance between the first region V1C2 and the first region V1D1 can be set to 0.6D, which corresponds to the distance of 1.8m from the eyeglass lens LS, which is at a height of 1.5m to the point where the tire of a bicycle running parallel to it at a distance of 1m touches the ground.

[0151] The second region V2h1 is located between the first region V1A3 and the first region V1C2. The set distance of the second region V2h1 is set to linearly connect the set distance of the first region V1A3 and the set distance of the first region V1C2, or to smoothly connect them using an arbitrary mathematical formula. The second region V2l1 is located between the first region V1A3 and the first region V1D1. The set distance of the second region V2l1 is set to linearly connect the set distance of the first region V1A3 and the set distance of the first region V1D1, or to smoothly connect them using an arbitrary mathematical formula.

[0152] The second region V2j1 is the region located between the first region V1C2 and the second region V2h1, and the second region V2i3 and the first region V1B4. The second region V2k1 is the region located between the first region V1D1 and the second region V2l1, and the second region V2i3 and the first region V1B4. The set distances for the second region V2j1 and the second region V2k1 are set so as to linearly connect or smoothly connect using an arbitrary mathematical formula the set distances at the parts of the first region V1 and the second region V2 that are opposite each other on either side of the second region V2j1 or the second region V2k1 that are in contact with the second region V2j1 or the second region V2k1.

[0153] The first region V1B4 is set up similarly to the first region V1B3 (Figure 17), except that its range is narrower because the first region V1C2, second region V2j1, first region V1D1, and second region V2k1 are set up. The second region V2i3 is set up similarly to the second region V2i2 (Figure 17), except that its range is narrower because the first region V1C2, second region V2j1, second region V2h1, first region V1D1, second region V2k1, and second region V2l1 are set up. If the width of the first region V1B4 and second region V2i3 in the X-axis direction becomes too narrow, the visibility of the instrument will change even if the wearer Wr turns their head slightly from side to side, which negatively affects the wearing comfort and is therefore undesirable. Therefore, assuming a head swing angle of -25 to 25 degrees with some margin, the X coordinate x20 at the left end of the first region V1B4 can be set to -12 mm, and the X coordinate x30 at the right end can be set to 12 mm.

[0154] Distance distribution D5 offers a greater number of variable parameters than distance distribution D4 (Figure 17). Therefore, eyeglass lenses LS designed using distance distribution data corresponding to distance distribution D5 can be positioned as a higher-grade product with a higher price and superior performance compared to eyeglass lenses LS designed using distance distribution data corresponding to distance distribution D4.

[0155] Let's consider the aberration balance when designing spectacle lens LS using distance distribution D5. For the first region V1A3 and the first region V1B4, the aberration balance can be set in the same way as in the modified example 4 described above. When viewing a bicycle moving parallel to you through the first region V1C2 and the first region V1D1, it is not necessarily required to see it clearly. However, in order to correctly recognize the relative position of the bicycle from your perspective, it is undesirable to have distortion of the field of view or double images due to the inability to use binoculars or double images due to chromatic aberration. These problems tend to occur in the part of the spectacle lens closest to the frame (periphery) with a large prescription. Therefore, in the range where the prescription is not too strong, with an equivalent spherical power of -6D to +6D, it is preferable to set the aberration balance by giving more importance to correcting residual astigmatism, which affects image distortion, than to correcting residual refractive power. When the prescription becomes stronger than this range, it is desirable to design the lens so that distortion aberration is suppressed.

[0156] (Experimental variation 6) In eyeglass lenses (LS), aberrations, specifically residual refractive power and residual astigmatism, are typically best near the prism reference point through which the optical axis passes, and increase with distance from this point. Therefore, if the optical axis of the eyeglass lens (LS) passes through the fitting point (FP), it is impossible to completely eliminate aberrations at the periphery of the lens, regardless of how the aberration balance is considered. In contrast, by intentionally causing eccentricity by tilting at least one of the object side and the eyeball side of the eyeglass lens (LS), the optical axis of the eyeglass lens (LS) can be set to pass through a position different from the fitting point (FP), thereby improving the aberration of light rays passing near the point where the shifted optical axis intersects the eyeglass lens (LS). Here, the optical axis refers to the straight line that coincides with the normal to the object side at the prism reference point set on the object side during design. Separately, the straight line passing through the prism reference point set on the object side during design and the design rotation point is referred to here as the apparent optical axis.

[0157] Figure 19 is a conceptual diagram illustrating the shifting of the apparent optical axis of an eyeglass lens from the fitting point FP, schematically showing a cross-section of the eyeglass lens LS1. Figure 19 shows the original optical axis Ax1 before the shift, passing through the rotation point RC of the eyeball and the fitting point FP in the assumed wearing state during the design phase. In the eyeglass lens LS1 of Figure 19, the side of the object is set to a position rotated counterclockwise around the fitting point FP located on the side of the object, relative to the side of the eyeball. As a result, point OC, located on a different side of the object than the fitting point FP, becomes the prism reference point, and the normal of the side of the object at point OC becomes the new optical axis Ax2. The line passing through point OC and the rotation point RC becomes the apparent optical axis Ax20. In this way, the design can be made so that residual astigmatism is approximately minimized in the vicinity of point OC and in the rays passing through the rotation point RC. In the spectacle lens LS1, in which at least one surface is eccentric, residual astigmatism can be optimized near point OC through which the apparent optical axis Ax20 passes. Hereafter, point OC will be referred to as the apparent optical axis passing point OC. It is preferable to set the apparent optical axis passing point OC at a similarly offset position in both the left-eye lens and the right-eye lens of the spectacle lens LS1.

[0158] Figure 20 is a conceptual diagram showing an example of the position of the apparent optical axis passing point OC1 when the spectacle lens LS1 is designed using distance distribution data corresponding to the distance distribution D1 (Figure 2). The apparent optical axis passing point OC1 of the spectacle lens LS1 is located at the height of the fitting point FP in the first region V1C. By designing the golf spectacle lens LS1 using the distance distribution D1 and setting the apparent optical axis passing point OC1 in the first region V1C, a better field of view can be obtained when looking at an object defined in the direction of the ball B, such as the cup Cp, through the vicinity of the apparent optical axis passing point OC1 of the spectacle lens LS1 during putting. The apparent optical axis passing point OC1 may be set in the first region V1B. In this case, a better field of view can be obtained when viewing ball B through the spectacle lens LS1 during addressing, etc. The apparent optical axis passing point OC1 can be placed in the first region V1 or the second region V2, and it is preferable from the viewpoint of obtaining a better field of view through the set region that it is set in a region different from the region where the fitting point FP is located.

[0159] However, shifting the optical axis of the LS1 spectacle lens from its original optical axis in this way can result in a significant difference in prism power at the fitting point FP of the LS1 spectacle lens compared to the prescription. In particular, when considering the difference in prism power between one eye and the other eye, it is undesirable for the difference in prism power between the left and right eyes in the prescription to differ from the difference in prism power between the left and right eyes at the fitting point FP of the LS1 spectacle lens. Therefore, by correcting the prism amount of at least one LS spectacle lens to intentionally shift it from the prescribed prism power, this difference in prism power between the left and right eyes can be eliminated. This makes it possible to provide an LS1 spectacle lens that satisfies the difference in prescribed prism amounts between the left and right eyes while shifting the apparent optical axis of the LS spectacle lens to approximately the desired position, thereby suppressing deterioration of wearing comfort due to the difference in prism amounts.

[0160] The modified method for designing spectacle lenses involves designing the spectacle lens LS1 such that its apparent optical axis passes through a first region V1 or a second region V2 that is different from the first region V1 or second region V2 where the fitting point FP is located. This allows the wearer Wr to obtain a better field of view when viewing through the region where the apparent optical axis passing point OC is set.

[0161] (Example 7) Even when the eyeglass lens LS1 is intended for use by the wearer Wr while riding a motorcycle, the apparent optical axis passing point OC may be set to a position different from the fitting point FP.

[0162] Figure 21 is a conceptual diagram showing an example of the position of the apparent optical axis passing point OC2 when the spectacle lens LS1 is designed using distance distribution data corresponding to distance distribution D5 (Figure 18). The apparent optical axis passing point OC2 of the spectacle lens LS1 is located in the first region V1A3. The left-right position of the apparent optical axis passing point OC2 is the same as the X coordinate of the fitting point FP (X=0). When riding a bicycle such as a road bike in a cycling competition, the wearer Wr spends the longest time looking forward with their eyes rotated upward while leaning forward. Therefore, the height of the apparent optical axis passing point OC2 can be set so that the line of sight when the wearer Wr is in such a forward-leaning posture passes through the apparent optical axis passing point OC2. Alternatively, the height of the apparent optical axis passing point OC2 may be statistically calculated and set from the line of sight direction when a cyclist or an ordinary person is in a forward-leaning posture while riding a bicycle. By using the distance distribution D5 and setting the apparent optical axis passing point OC2 in the first region V1A3, the spectacle lens LS1 for motorcycles can be designed to provide a better field of view when riding a motorcycle such as a road bike and looking forward through the vicinity of the apparent optical axis passing point OC2 of the spectacle lens LS1. Furthermore, the apparent optical axis passing point OC2 can be appropriately applied to any distance distribution. For example, in the case of the distance distribution D4 in Figure 12, the apparent optical axis passing point can be set by shifting it from the fitting point FP, similar to this modified example.

[0163] (Variation 8) In the above-described embodiment, the use of the spectacle lens LS was described as when the wearer Wr plays golf or participates in cycling competitions, but the use of the spectacle lens LS may also be described as when the wearer Wr drives a car. In particular, it is preferable to use the spectacle lens LS when the wearer Wr drives a car.

[0164] Figure 22 is a conceptual diagram showing the distance distribution D6 related to this modified example. The distance distribution D6 assumes that the wearer Wr is driving a right-hand drive car. For eyeglass lenses LS intended for driving left-hand drive cars, the distance distribution data can be designed using distance distribution data that corresponds to a distance distribution symmetrical to the distance distribution D6 with respect to the vertical straight line Ly passing through the fitting point FP.

[0165] The distance distribution D6 comprises the first region V1A4, the first region V1B5, the first region V1C3, the first region V1D2, the first region V1E, the second region V2m, and the second region V2n. The Y coordinate y100 at the lower end of the first region V1E, the Y coordinates y200 and y300 at the upper and lower ends of the first region V1A4, the Y coordinates y400 at the upper ends of the first regions V1C3, V1B5, and V1D2, and the X coordinates x100 at the left end and x200 at the right end of the first region V1B5 are parameters that can be set as variable values.

[0166] The first region V1A4 is the area for viewing the road ahead while driving. A fitting point FP is located in the first region V1A4. Therefore, the Y coordinate y300 at the lower end of the first region V1A4 is set to a value less than 0. In the example in Figure 22, y300 is set to -2 mm. The set distance of the first region V1A4 is set to 0D, which corresponds to infinity.

[0167] The first region V1B5 is the area used for momentarily viewing instruments such as the speedometer and the navigation system monitor while driving. When viewing these, the driver needs to shift their gaze only with rotational eye movements and quickly return their gaze to the road ahead after viewing them. Therefore, it is desirable that the size of the first region V1B5 be set so that these can be viewed with only rotational eye movements.

[0168] Within the first region V1B5, the instrument region sm and the monitor region ns are defined. The instrument region sm and the monitor region ns represent the areas through which the line of sight passes over the spectacle lens LS when viewing the instruments and the navigation system monitor using only rotational eye movements, respectively. Preferably, the setting distance for the first region V1B5 is set as the average value of the distance from the driver's eye to the center of the instruments and the distance from the driver's eye to the navigation system monitor. However, the average value of these distances should be obtained by taking the reciprocal of the arithmetic mean of the reciprocal (refractive power) of these distances. For example, a representative value of 1.7D, corresponding to 60 cm, can be set.

[0169] The first region V1C3 is the region used to view the outside of the car and the left side mirror through the left-side window of the driver's seat in a right-hand drive vehicle while driving. To view the left side mirror through the spectacle lens LS, it is usually necessary to rotate the eyes while turning the head to the left in order to place the side mirror at the left edge of the field of view passing through both spectacle lenses LS. The left mirror region sl of the first region V1C3 indicates the region through which the line of sight passes the spectacle lens LS when viewing the left side mirror at the left edge of the spectacle lens LS. It is preferable that the X coordinate x100 of the right boundary line of the left mirror region sl be set so that the left mirror region sl is included in the first region V1C3. However, if the left mirror region sl and the monitor region ns overlap, it is preferable to prioritize the size of the first region V1B5, which includes a monitor displaying small characters, and set the X coordinate x100 of the right edge of the first region V1C3 accordingly. The X coordinate x100 of the right edge of the first region V1C3 and the left edge of the first region V1B5 can be, for example, -20 mm. The setting distance for the first region V1C3 is set to 0.5D, which corresponds to 2m, based on the curvature and position of the left side mirror, which is a convex mirror. This value is intended for viewing an object at infinity that is reflected by a convex mirror with a refractive power equivalent to -2D (focal length equivalent to -50cm), located 1.5m from the spectacle lens LS.

[0170] The first region V1D2 is the region used to view the outside of the car and the right side mirror through the right-hand window of the driver's seat when driving a right-hand drive vehicle. The right mirror region sr within the first region V1D2 indicates the region through which the line of sight passes when viewing the right side mirror with the spectacle lens LS. To view the right side mirror through the spectacle lens LS, it is possible to include the side mirror at the right edge of the field of view through both spectacle lenses LS by simply rotating the eye or slightly turning the head to the right. Therefore, it is preferable to set the X coordinate x200 of the boundary between the first region V1D2 and the first region V1B5 such that the right mirror region sr is positioned at the right edge of the field of view through both spectacle lenses LS, or slightly towards the center from the right edge. For example, the X coordinate x200 can be set to a position midway between the instrument region sm and the right mirror region sr, and in the example in Figure 22, x200 is set to 15 mm. The setting distance for the first region V1D2 can be set to 0.8D, which corresponds to 1.2m, based on the curvature and position of the right side mirror, since it is a convex mirror. This value assumes viewing an object at infinity reflected by a convex mirror with a refractive power equivalent to -2D (equivalent to a focal length of -50cm) at a distance of 0.7m from the spectacle lens LS.

[0171] The first region V1E is the region for viewing the rearview mirror. The rearview mirror region bm, located within the first region E, represents the region through which the line of sight passes when viewing the rearview mirror with the spectacle lens LS. If the rearview mirror is a flat mirror, the setting distance of the first region V1E can be set to infinity, and the region from the first region V1E to the first region V1A4 can be considered a single connected first region V1. If the rearview mirror is a convex mirror, the setting distance of the first region V1E can be set to 1D, which corresponds to 1m, based on its curvature and position. This value assumes viewing an object at infinity that is reflected by a convex mirror with a refractive power equivalent to -2D (focal length equivalent to -50cm), located 0.5m from the spectacle lens LS. Alternatively, if the rearview mirror is not a mirror but a device consisting of a camera and monitor, such as a backup camera, the distance from the driver's eye to this monitor can be set to 2D, which corresponds to, for example, 50cm. The Y coordinate y100 at the lower end of the first region V1E is set to the Y coordinate at the lower end of the rearview mirror region bm, and the Y coordinate y200 at the lower end of the second region V2n, which is located between the first region V1E and the first region V1A4, is set to a value 3 mm smaller than y100. In this case, the rate of change of the set distance in the second region V2n is 0.66 D / mm.

[0172] Since the difference between the set distance of the first region V1A4 and the set distance of the first region V1B5 is often relatively large, it is preferable to set the second region V2m between the first region V1A4 and the first region V1B5, as shown in Figure 22. The second region V2m is connected to the first regions V1C3, V1B5, and V1D2 to simplify the pattern of the distance distribution D6. Therefore, it is preferable that the Y coordinate y400 at the upper end of the first regions V1C3, V1B5, and V1D2 be the uppermost position of the left mirror region sl, the monitor region ns, the instrument region sm, and the right mirror region sr. In the example in Figure 22, y400 is set to -5mm.

[0173] The set distances and variable values ​​for each of the first and second regions V1 and V2 in the distance distribution D6 described above are representative values, but are not limited to the above values, and it is desirable to set them to more appropriate values. For example, since the position of objects such as instruments differs depending on the vehicle type, it is possible to obtain information on the position of objects from the automobile manufacturer and set representative values ​​for the variable values ​​in advance for each vehicle type. Also, since the optimal value will change depending on the physique of the wearer Wr, the driver, representative values ​​may be calculated from information about the wearer Wr's body, such as height, sitting height, arm length, or leg length, and information on the position of objects for each vehicle type. Furthermore, when test driving a car of the same model as the car to be purchased at a car dealership, the area used by the spectacle lenses when viewing objects may be measured using an arbitrary eye-tracking device, and representative values ​​may be set based on that area. When the wearer Wr drives a car they own, information about the wearer Wr's gaze while driving may be obtained using an eye-tracking device as described above.

[0174] This section considers the aberration balance when designing spectacle lenses LS using the distance distribution D6. For the first region V1A4, if the wearer Wr has no or virtually no difference in visual acuity between bright and dark conditions, it is desirable to achieve an appropriate aberration balance so that the impact of residual refractive power and residual astigmatism on wearing comfort is minimized, allowing the wearer to see comfortably without using accommodative power. An appropriate aberration balance is, for example, the aberration balance that minimizes clarity, which can be expressed as the square root of the sum of the square of the square of the square of the square of half of the residual astigmatism. However, especially when the wearer Wr is middle-aged or older, if there is a difference in visual acuity between bright and dark conditions, it is desirable to prescribe a power that provides high visual acuity in dark conditions and then adjust the aberration balance to minimize the residual refractive power from this prescription.

[0175] For objects viewed through the first region V1B5, it is desirable to be able to focus more smoothly and instantaneously. Therefore, for young people with sufficient accommodative power, an aberration balance that prioritizes keeping residual astigmatism sufficiently small is desirable so that focusing can be done quickly and clearly. On the other hand, consider the case where accommodative power is not so sufficient. If the residual refractive power shifts to the negative side, extra adjustment is required, so gazing takes longer. Therefore, in that case, it is desirable to have an aberration balance that prioritizes preventing the residual refractive power from shifting to the negative side rather than suppressing residual astigmatism. In practice, with eyeglass lenses for correcting hyperopia with a positive spherical power, the residual refractive power tends to shift to the negative side, so it is desirable to adjust the aberration balance based on the wearer's prescription. Furthermore, if the wearer's accommodative power is too small to focus on objects at a distance of 30cm to 50cm from the wearer, it is necessary to use progressive refractive power eyeglass lenses such as bifocals with an add power set to compensate for the accommodative power.

[0176] For the first regions V1C3 and V1D2, it is sufficient that the presence of other cars, pedestrians, or obstacles can be discerned from outside the car through the left and right windows, or from objects reflected in the left and right side mirrors; clear vision is not necessarily required. Therefore, the aberration balance of the first regions V1C3 and V1D2 can be set to the same value as the adjacent first region V1B5.

[0177] Regarding the first region V1E, as mentioned above, if the rearview mirror is a flat mirror, it can be connected to the first region V1A4, and therefore the aberration balance can be set in the same way as the first region V1A4. If the rearview mirror is a concave mirror, or if a monitor such as a rearview camera is located in the rearview mirror region bm, the aberration balance can be set based on the wearer's adjustment force Wr, similar to the first region V1B5.

[0178] In the modified design method for eyeglass lenses, the intended use of the eyeglass lens LS is driving a car, and the wearer information is information about the wearer Wr's gaze obtained by an eye-tracking device when the wearer Wr is driving a car that the wearer Wr plans to purchase or a car that the wearer Wr currently owns. This makes it possible to provide eyeglass lenses Wr that are more suitable for the wearer Wr, based on the arrangement of mirrors and other elements in the car that the wearer Wr drives, and the characteristics of the wearer Wr's gaze when driving the car.

[0179] (Extreme variation 9) In the embodiments described above, the optician obtains usage information and wearer information for eyeglass lenses LS or eyeglass lenses LS1 from the wearer Wr at the optician's shop, and the customer inputs this information into the ordering device 2. However, the usage information or wearer information may be input into a computer at a location other than the optician's shop and transmitted to the ordering device 2, etc.

[0180] For example, it is desirable to measure wearer information for designing golf eyeglass lenses LS at a golf equipment store. It is desirable for sales staff at a golf equipment store to set or measure wearer information for wearer Wr who comes to the store to purchase golf equipment, according to the length of the golf clubs that wearer Wr is purchasing. Golf equipment stores have sales staff with extensive knowledge of golf in order to sell golf equipment, so it is also possible to measure wearer information in a corrected posture, such as during address. Furthermore, this wearer information may also be determined based on information obtained by measuring the area used by the eyeglass lenses when viewing an object using any eye-tracking device. The wearer information measured at the golf equipment store can be sent to the eyeglass store via any existing email service, or the purchaser can bring it to the eyeglass store written on a special form. The eyeglass store can then use this wearer information to order eyeglass lenses in the same manner as in the embodiment described above. Furthermore, if the intended use of the LS eyeglass lenses is golf, wearer information may be obtained at golf equipment stores or other sporting goods stores and provided to opticians, etc. If the intended use of the LS eyeglass lenses is cycling, wearer information may be obtained at bicycle shops or other sporting goods stores and provided to opticians, etc. If the intended use of the LS eyeglass lenses is driving or riding in a car, wearer information may be obtained at car dealerships and provided to opticians, etc.

[0181] In this modified method for designing eyeglass lenses, application information and wearer information are entered at a location other than the retailer's store and transmitted to a computer owned by the retailer. This makes it possible to provide eyeglass lenses that are suitable for various situations in which the wearer Wr views objects, in various locations. In particular, by measuring wearer information for the sale of eyeglass lenses in locations where there are people with specialized knowledge regarding the application of the eyeglass lenses, it is possible to provide eyeglass lenses that are more suitable for the wearer Wr.

[0182] (Variation 10) The order processing device 2 or design device may be a device configured as a computer system that records a program for realizing its information processing function onto a computer-readable recording medium, and then loads and executes the program for controlling the processing of the design unit 27 and related processes described above, which is recorded on this recording medium, into a computer system. Here, "computer system" includes the OS (Operating System) and peripheral hardware. Furthermore, "computer-readable recording medium" refers to portable recording media such as flexible disks, magneto-optical disks, optical disks, and memory cards, as well as storage devices such as hard disks and solid-state drives built into the computer system. In addition, "computer-readable recording media" may include those that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs via networks such as the Internet or communication lines such as telephone lines, and those that hold programs for a certain period of time, such as volatile memory inside the computer system that acts as a server or client in such cases. Furthermore, the above program may be for realizing only a part of the functions described above, or it may be realized by combining the above functions with programs already recorded in the computer system.

[0183] Furthermore, when applying the above-described computer system's role to a personal computer (hereinafter referred to as PC), the control program described above can be provided via a recording medium such as a DVD-ROM or through data signals such as the Internet. Figure 23 illustrates this. PC950 receives the program via DVD-ROM953. PC950 also has a connection function to a communication line 951. Computer 952 is a server computer that provides the above-described program and stores the program on a recording medium such as a hard disk. The communication line 951 is a communication line such as the Internet or PC communication, or a dedicated communication line. Computer 952 reads the program using the hard disk and transmits the program to PC950 via the communication line 951. That is, the program is carried as a data signal by a carrier wave and transmitted via the communication line 951. In this way, the program can be supplied as a computer program product that can be read by various types of computers, such as recording media and carrier waves.

[0184] As a design program for this modified example, a first acquisition process (corresponding to step S221 in the flowchart of Figure 9) acquires the use information (first information) about the intended use of the eyeglass lens to be designed, the gaze, location, and equipment used by the wearer Wr of the eyeglass lens LS in the above use, and wearer information (second information) about at least one part of the wearer Wr's body, and a second acquisition process based on the first information acquires distance distribution data indicating the number, position, shape, and size of multiple first regions V1 to be set on the surface of the eyeglass lens LS, and the distance to the object viewed through each first region V1. A design program is provided to cause the processing unit to perform the following: 2. Acquisition process (corresponding to step S223); 2. Region setting process (corresponding to step S225) which sets a variable value among the numerical values ​​indicating the number, position, shape, size, and set distance of multiple first regions V1 in the distance distribution data based on the second information, and sets multiple first regions V1 and set distances on the surface of the spectacle lens LS; and 3. Target aberration setting process (corresponding to step S227) which sets the target aberration distribution of the spectacle lens LS based on the set multiple first regions V1 and set distances.

[0185] (Variation 11) The values ​​x1, x2, x3, x4, x10, x20, x30, x40, x100, x200, y1, y2, y3, y4, y10, y20, y30, y100, y200, y300, and y400 exemplified above can be appropriately changed based on the characteristics of the wearer's eye, such as the position of the rotation point, the position of the object expected in the application of the spectacle lens LS, or the model of the spectacle lens. For example, these values ​​can be set by shifting them from the values ​​exemplified above in the X-axis and Y-axis directions by a range of -5mm to +5mm, -3mm to +3mm, or -2mm to +2mm, respectively. Furthermore, the values ​​of the setting distances exemplified above can be changed based on the characteristics of the wearer's eye, such as the position of the rotation point, the position of the object expected in the application of the spectacle lens LS, or the model of the spectacle lens. If the example shows a point where the set distance is set to infinity (0D), it can be set to -0.25D to 0.25D as appropriate. If the example shows a point where the set distance is set to a finite distance, it can be set within the range of -0.5D to +0.5D, or -0.25D to +0.25D, in addition to the example set distance. Furthermore, in addition to the first and second regions V1 and V2, a fourth region can be newly created and designed where the set distance within the region does not remain constant but changes continuously or discontinuously.

[0186] The present invention is not limited to the embodiments described above. Other embodiments conceivable within the scope of the technical idea of ​​the present invention are also included within the scope of the present invention. [Examples]

[0187] The following examples illustrate embodiments and modifications of the above-described embodiments, but the present invention is not limited by the specific numerical values ​​and other details of the embodiments. In the following embodiments and comparative examples, the prism reference point coincides with the fitting point.

[0188] (Example 1) In Example 1, using the distance distribution data corresponding to the distance distribution D1 in FIG. 4, an optimization design of a single-focus spectacle lens for golf was performed with an aberration balance that results in a rotationally symmetric distribution regardless of the set distance. The prescription of the spectacle lens was a spherical power S of +4D and a cylindrical power C of 0D.

[0189] As the numerical values of the first region, the set distance of V1A was ∞ [m], the set distance of V1B was 1.5 m, and the set distance of V1C was 3 m. Also, as the numerical values of the second region, x1 was fixed at -7 mm, x2 was fixed at -4 mm, y1 was fixed at 6 mm, y2 was fixed at 3 mm, y3 was fixed at -4 mm, and y4 was fixed at -7 mm. The aberration balance of the first regions V1A, V1B, and V1C was determined with the goal of minimizing the visibility expressed by SQRT(residual refractive power^2 + (residual coma × 0.3)^2). Here, ^2 means squared, and SQRT means taking the square root of the value inside the parentheses. In the following, the visibility was calculated using the same calculated values. Based on this goal of aberration balance, the target residual refractive power and target residual coma of the spectacle lens with the prescription to be designed were determined by trial and error, and the spectacle lens was optimized.

[0190] Figs. 24 and 25 are aberration diagrams of the single - focus spectacle lens designed in this embodiment for golf. Each position in the designed single - focus spectacle lens is shown by an XY coordinate system with the fitting point FP as the origin, which is the same as that in Fig. 4 (the same applies to the following figures). Fig. 24 shows the distribution of residual refractive power, and the values of the residual refractive power are indicated by the contour line CL1 (the same applies to the figures showing the distribution of residual refractive power below). Fig. 25 shows the distribution of residual astigmatism, and the values of the residual astigmatism are indicated by the contour line CL2 (the same applies to the figures showing the distribution of residual astigmatism below). When designing and evaluating this single - focus spectacle lens, the pattern of the distance distribution D1 shown in Fig. 4 was used for the design object plane. The boundary line between the first region V1 and the second region V2 in the figure is shown by the dashed line BL (the same applies to the following figures). In this embodiment, the aberration balance has a rotation - symmetric distribution regardless of the set distance. As a result, although there are disturbances in the aberration, that is, the residual refractive power and the residual astigmatism near the boundary of the first region V1, the aberration characteristics are generally rotation - symmetric at positions away from the boundary.

[0191] Fig. 26 is a diagram showing the distribution of the average curvature of the synthetic sagittal surface of the single - focus spectacle lens of this embodiment. The coordinate system of Fig. 26 and the following figures showing the distribution of the average curvature is the same as that in Fig. 10. The average curvature shown in Fig. 26 is a value obtained by subtracting the average curvature C(0,0) at the position (0,0) from the average curvature C(h,φ) at each point so that the average curvature C(0,0) at the position (0,0) becomes 0, and the unit is [1 / m]. The average curvature in the following figures is also a value calculated in the same way. The numerical value 5.81 shown in the lower left of the figure is the value subtracted for offset. In the following figures as well, the average curvature uses the value subtracted for offsetting the average curvature at the origin, and the subtracted value is shown at the same position. The values of the average curvature are indicated by the contour line CL3. In the figure, the circumferences C14 of the circle with a height h of 14 mm and C22 of the circle with a height h of 22 mm along the radial direction from the Z - axis are shown (dotted lines). The contour line CL3, the circumferences C14, and the circumferences C22 are the same in the figures showing the distribution of the average curvature below.

[0192] The average curvature at angle φ (Figure 10) at heights of 14 mm, 16 mm, 18 mm, 20 mm, and 22 mm on the composite sag surface of the single-focus spectacle lens in this embodiment is shown in the graph in Figure 11. The normalized average curvature, obtained by normalizing this average curvature, is shown in the graphs in Figures 12 and 13.

[0193] (Comparative Example 1) Figures 27 and 28 are aberration diagrams of an aspherical single-focus spectacle lens with the same formulation as Example 1, designed using conventional technology. Figure 27 shows the distribution of residual refractive power, and Figure 28 shows the distribution of residual astigmatism. Compared to Figures 24 and 25, the aberrations, i.e., residual refractive power and residual astigmatism, are disturbed in a stepped manner near the boundary of the first region, and this disturbance does not subside even at positions away from the boundary, resulting in a stepped shift in the aberration values ​​in each divided region. As a result, the aberration balance changes for each of the first regions V1.

[0194] Figure 29 shows the average curvature of the composite sag surface of the single-focus spectacle lens in this comparative example. The distribution of this average curvature was rotationally symmetric about the optical axis. Therefore, there was no variation in the average curvature with respect to the angle φ for all heights h.

[0195] (Example 2) In Example 2, the target aberration balance for the first regions V1B and V1C was set to residual refractive power / residual astigmatism = -∞ (residual astigmatism = 0), and the design was carried out under the same conditions as in Example 1 for all other aspects.

[0196] Specifically, since the first region V1A is the region for viewing objects at infinity, an appropriate aberration balance was set to minimize the impact of residual refractive power and residual astigmatism on wearing comfort, similar to Example 1, so that the wearer can relax and view without using their accommodative power. However, since the first regions V1B and V1C are regions for near vision using the wearer's accommodative power, the need to consider residual refractive power is lower compared to the first region V1A, and the aberration balance was set to correct residual astigmatism more effectively.

[0197] Figures 30 and 31 are aberration diagrams of the single-focus golf spectacle lenses designed in this embodiment. Figure 30 shows the distribution of residual refractive power, and Figure 31 shows the distribution of residual astigmatism. As shown in Figure 30, the residual refractive power was larger on the negative side in the first region V1B and the first region V1C. This can be compensated for by increasing the wearer's accommodative power by the amount of that error. As shown in Figure 31, there was almost no residual astigmatism in the first region V1B and the first region V1C. As a result, when playing golf, the wearer can obtain the best possible field of vision without blurring due to residual astigmatism in situations such as focusing on the ball at their feet during tee shots and approach shots, and when looking at the cup or an object set in the direction to which ball B will be hit during putting.

[0198] Figure 32 shows the distribution of the average curvature of the composite sag surface of the single-focus spectacle lens in this embodiment. The normalized average curvature of the composite sag surface at angles φ (Figure 10) at heights of 14 mm, 16 mm, 18 mm, 20 mm, and 22 mm is shown in the graph in Figure 14.

[0199] (Example 3) In Example 3, distance distribution data corresponding to a distance distribution obtained by shifting the distance distribution D1 in Fig. 4 by +2 mm in the Y-axis direction was set. Using this distance distribution data, an optimization design of a single-focus spectacle lens for golf was performed with an aberration balance that results in a rotationally symmetric distribution regardless of the set distance. Note that the prescription of the single-focus spectacle lens in Example 3 had a spherical power S of -4.25 D and a cylindrical power C of 0 D.

[0200] The target aberration balance was determined such that the above-mentioned visibility was minimized. Based on this target aberration balance, the target residual refractive power and target residual astigmatism of the spectacle lens of the prescription to be designed were determined through trial and error, and the single-focus spectacle lens of this example was optimized designed.

[0201] Figs. 33 and 34 are aberration diagrams of the single-focus spectacle lens for golf designed in this example. Fig. 33 shows the distribution of residual refractive power, and Fig. 34 shows the distribution of residual astigmatism. In the single-focus spectacle lens of this example, the aberration balance is a rotationally symmetric distribution regardless of the design distance. As a result, although there is some aberration disturbance near the boundary of the first region V1, the aberration characteristics are generally rotationally symmetric at positions away from the boundary.

[0202] Fig. 35 is a diagram showing the distribution of the average curvature of the synthetic sagittal surface of the single-focus spectacle lens of this example. Fig. 36 is a graph showing the normalized average curvature of the synthetic sagittal surface at the height h and angle φ of the single-focus spectacle lens of this example.

[0203] In Figure 36 and the following figures showing normalized mean curvature, the curves corresponding to H14, H16, H18, H20, and H22 are shown as normalized mean curvatures on the circumference of circles corresponding to heights h of 14 mm, 16 mm, 18 mm, 20 mm, and 22 mm, respectively, along the radial direction from the Z axis, with the reference position on the vertical axis shifted so that the curves do not overlap. For H20, H18, H16, and H14, the values ​​shown are the normalized mean curvature plus 0.5, 1.0, 1.5, and 2.0, respectively. The portion CB plotted as a thick solid line on each curve (indicated by a sign for H14 and H22) is the portion of the curve corresponding to the corresponding reference angle φ0 that satisfies condition (A1).

[0204] As shown in Figure 36, in the single-focus spectacle lens of this embodiment, for heights h from 18 mm to 22 mm, there were low-curvature variation arcs with different average curvatures at three locations: around φ80°, around 210°, and around 290°. At all heights h, the normalized average curvature at the corresponding reference angle around φ290° was smaller than the normalized average curvature around φ110°. This is a characteristic feature to ensure a uniform aberration balance across the entire lens.

[0205] (Example 4) In Example 4, the prescription for the eyeglass lens was optimized for single-vision eyeglass lenses for golf, with a spherical power S of -4.25D and a cylindrical power C of 0D. Aside from the prescription, the design was carried out under the same conditions as in Example 2.

[0206] Figures 37 and 38 are aberration diagrams of the single-focus golf spectacle lenses designed in this embodiment. Figure 37 shows the distribution of residual refractive power, and Figure 38 shows the distribution of residual astigmatism. As shown in Figure 37, the residual refractive power was larger on the positive side in the areas corresponding to the first region V1B and the first region V1C. This can be compensated for by reducing the wearer's accommodative power by the amount of that error. As shown in Figure 38, there was almost no residual astigmatism in the areas corresponding to the first region V1B and the first region V1C. As a result, when playing golf, the wearer can obtain the best possible field of vision without blurring due to residual astigmatism in situations such as focusing on the ball at their feet during tee shots and approach shots, and when looking at the cup and the grain of the grass during putting.

[0207] Figure 39 shows the distribution of the average curvature of the composite sag surface of the single-vision spectacle lens of this embodiment. Figure 40 is a graph showing the normalized average curvature of the composite sag surface of the single-vision spectacle lens of this embodiment at height h and angle φ. The reference position of the vertical axis has been shifted so that each curve does not overlap.

[0208] As shown in Figure 40, in the single-focus spectacle lens of this embodiment, at each height from 14 mm to 22 mm, there were low-curvature fluctuation arcs with different average curvatures at at least two locations, around φ80° and around φ260°. Furthermore, at all heights h, the normalized average curvature at the corresponding reference angle around φ260° was greater than the normalized average curvature around φ80°. This is a characteristic of the average curvature of the composite sag surface corresponding to the first region, achieved by designing the aberration balance during the design phase so that residual astigmatism becomes smaller in the part of the spectacle lens corresponding to the first region where the distance to the object being viewed is closer.

[0209] (Example 5) In Example 5, the prescription for the eyeglass lens was optimized for single-vision eyeglass lenses for golf, with a spherical power S of -1.00D, a cylindrical power C of -0.75D, and an astigmatism axis power Ax of 135°. Aside from the prescription, the design was carried out under the same conditions as in Example 2.

[0210] Figures 41 and 42 are aberration diagrams of the single-focus golf spectacle lenses designed in this embodiment. Figure 41 shows the distribution of residual refractive power, and Figure 42 shows the distribution of residual astigmatism. As shown in Figure 41, the residual refractive power was particularly large on the positive side in the outer periphery of the portion corresponding to the first region V1C. This can be compensated for by reducing the wearer's accommodative power by the amount of that error. As shown in Figure 42, the residual astigmatism was extremely small, less than 0.1D, in the portions corresponding to the first region V1B and the first region V1C. As a result, when playing golf, the wearer can obtain the best possible field of vision without blurring due to residual astigmatism, both when focusing on the ball at their feet during tee shots and approaches, and when looking at the cup and the grain of the grass during putting. Furthermore, due to the weak prescription power, residual astigmatism was small even in the area corresponding to the first domain V1A, but it was about 0.15D in the area near the outer edge, which was larger than in the areas corresponding to the first domains V1B and V1C.

[0211] Figure 43 shows the distribution of the average curvature of the composite sag surface of the single-vision spectacle lens of this embodiment. Figure 44 is a graph showing the normalized average curvature of the composite sag surface of the single-vision spectacle lens of this embodiment at height h and angle φ. The reference position of the vertical axis has been shifted so that each curve does not overlap.

[0212] As shown in Figure 44, in the single-focus spectacle lens of this embodiment, at each height from 18 mm to 22 mm, there were low-curvature variation arcs with different average curvatures at at least two locations, around φ115° and around φ290°. Furthermore, at all heights h, the normalized average curvature at the corresponding reference angle around φ290° was greater than the normalized average curvature at φ110°, which is 180° different. This is a characteristic of the average curvature of the composite sag surface corresponding to the first region, achieved by designing the aberration balance during the design process so that residual astigmatism becomes smaller in the part of the spectacle lens corresponding to the first region where the distance to the object being viewed is closer.

[0213] (Example 6) In Example 6, using distance distribution data corresponding to the distance distribution obtained by inverting the distance distribution D1 in Figure 4 with respect to the Y axis, an optimized design for a single-vision eyeglass lens for golf was performed by setting the spherical power S to -3.25D, the cylindrical power C to -1.25D, and the axial power Ax of the astigmatism axis to 180°. The design was carried out under the same conditions as in Example 2, except for the prescription and distance distribution. If the distance distribution data corresponding to the distance distribution D1 in Figure 4 is the data for designing the eyeglass lens for the right eye, then the distance distribution data here is the data for designing the eyeglass lens for the left eye. Figure 46 shows the regions corresponding to the first region V1A, V1B, and V1C of the distance distribution D1, respectively.

[0214] Figures 45 and 46 are aberration diagrams of the single-vision golf spectacle lens designed in this embodiment. Figure 45 shows the distribution of residual refractive power, and Figure 46 shows the distribution of residual astigmatism. As shown in Figure 45, the residual refractive power was particularly large on the positive side in the outer periphery of the portion corresponding to the first region at the bottom of the lens. This can be compensated for by reducing the wearer's accommodative power by the amount of that error. As shown in Figure 46, there was almost no residual astigmatism in the portion corresponding to the first region at the bottom of the lens. As a result, when playing golf, the wearer can obtain the best possible field of vision without blurring due to residual astigmatism in situations such as focusing on the ball at their feet during tee shots and approach shots, and when looking at the cup and the grain of the grass during putting.

[0215] Figure 47 shows the distribution of the average curvature of the composite sag surface of the single-vision spectacle lens of this embodiment. Figure 48 is a graph showing the normalized average curvature of the composite sag surface of the single-vision spectacle lens of this embodiment at height h and angle φ. The reference position of the vertical axis has been shifted so that each curve does not overlap.

[0216] As shown in Figure 48, in the single-focus spectacle lens of this embodiment, at each height from 16 mm to 22 mm, there were low-curvature fluctuation arcs with different average curvatures at at least two locations, around φ=90° and around 270°. Furthermore, at all heights h, the normalized average curvature at the corresponding reference angle within a 45° angle range centered at φ=270° was greater than the normalized average curvature around φ=90°, which differed by 180°. This is a characteristic of the average curvature of the composite sag surface corresponding to the first region, achieved by designing the aberration balance so that residual astigmatism decreases as the distance to the viewing object decreases in the part of the spectacle lens corresponding to the first region.

[0217] (Example 7) In Example 7, the prescription for the eyeglass lens was optimized for single-vision eyeglass lenses for golf, with a spherical power S of -7.50D and a cylindrical power C of 0D. Aside from the prescription, the design was carried out under the same conditions as in Example 2.

[0218] Figures 49 and 50 are aberration diagrams of the single-focus golf spectacle lenses designed in this embodiment. Figure 49 shows the distribution of residual refractive power, and Figure 50 shows the distribution of residual astigmatism. As shown in Figure 49, the residual refractive power was particularly large on the positive side in the outer periphery of the portion corresponding to the first region V1C. This can be compensated for by reducing the wearer's accommodative force by the amount of that error. As shown in Figure 50, there was almost no residual astigmatism in the portions corresponding to the first region V1B and the first region V1C. As a result, when playing golf, the wearer can obtain the best possible field of vision without blurring due to residual astigmatism, both when focusing on the ball at their feet during tee shots and approaches, and when looking at the cup and the grain of the grass during putting.

[0219] Figure 51 shows the distribution of the average curvature of the composite sag surface of the single-vision spectacle lens of this embodiment. Figure 52 is a graph showing the normalized average curvature of the composite sag surface of the single-vision spectacle lens of this embodiment at height h and angle φ. The reference position of the vertical axis has been shifted so that each curve does not overlap.

[0220] As shown in Figure 52, in the single-focus spectacle lens of this embodiment, at each height from 14 mm to 22 mm, there were low-curvature fluctuation arcs with different average curvatures at at least two locations, around φ=80° and around 260°. Furthermore, at all heights h, the normalized average curvature at the corresponding reference angle within a 45° width angle range centered at φ=270° is greater than the normalized average curvature around φ=90°, which is 180° different. This is a characteristic of the average curvature of the composite sag surface corresponding to the first region, achieved by designing the aberration balance during the design process so that residual astigmatism becomes smaller in the part of the spectacle lens corresponding to the first region where the distance to the viewing object is closer.

[0221] The disclosures of the following priority application are incorporated herein by reference. Japanese Patent Application No. 2019-230891 (filed December 20, 2019) [Explanation of Symbols]

[0222] 1…Ordering device, 2…Order receiving device, 8…Coordinate system, 27…Design department, 100…Ordering screen, 271…First acquisition unit, 272…Second acquisition unit, 273…Area setting unit, 274…Target aberration setting unit, 275…Optimization unit, B…Ball, CB…Curve portion corresponding to the corresponding reference angle, Cp…Cup, D1, D2, D3, D4, D5, D6…Distance distribution, FP…Fitting point, L1…First distance, L2…Second distance, L3…Third distance, LS, LS1…Eyeglass lens, OC, OC1, OC2…Apparent optical axis passing point, PRP…Prism reference point, Pt…Putter, S1…Object side, S2… Eyeball side surface, S3...Synthetic sag surface, SL1,SL2,SL3,SR4...Left eye line of sight, Sf...Green, T...Target, V1,V1A,V1A1,V1A2,V1A3,V1A4,V1B,V1B1,V1B2,V1B3,V1B4,V1B5,V1C,V1C1,V1C2,V1C3 ,V1D,V1D1,V1D2,V1E...first region,V2h,V2h1,V2i,V2i1,V2i2,V2i3,V2j,V2j1, V2k, V2k1, V2l, V2l1...second area, V3...third area, Wr...wearer, θ1...first angle, θ2...second angle, θ3...third angle.

Claims

1. To obtain primary information about the intended use of the eyeglass lenses to be designed, To acquire second information regarding the wearer's line of sight, location, and equipment used in the aforementioned use, as well as at least one of the wearer's body parts, From a storage unit that stores arrangement patterns of multiple first regions according to the aforementioned application, in which at least the multiple first regions are arranged in the X-axis direction, which is the horizontal direction when a wearer wears eyeglasses, data is obtained from the storage unit based on the first information, indicating the number, position, shape, size, and distance to the object viewed through each first region to be set on the surface of the eyeglass lens. Based on the second information, a variable value is set among the numerical values ​​indicating the number, position, shape, size, and distance of the plurality of first regions in the data, and the plurality of first regions and the distance are set on the surface of the spectacle lens, wherein the second information indicates the arrangement of an 11th region, which is a first region corresponding to the first line of sight when viewing a first object located in front of the wearer, and a 12th region, which is a first region corresponding to the second line of sight when viewing a second object located to the left or right of the wearer and at a greater distance than the first object. , by setting the 12th region for viewing the second object on either the left side as seen from the left-eye lens wearer and the left side as seen from the right-eye lens wearer, or the right side as seen from the left-eye lens wearer and the right side as seen from the right-eye lens wearer, and with the vertical direction when the wearer is wearing the glasses being the Y-axis direction, the upper end of the region is positioned above the Y-axis position of the fitting point of the glasses lens, thereby setting the arrangement of the first region of the left-eye lens and the right-eye lens asymmetrical. A method for designing eyeglass lenses, comprising setting a target aberration distribution for the eyeglass lenses based on the set plurality of first regions and the distance.

2. In the method for designing eyeglass lenses according to claim 1, A method for designing spectacle lenses, wherein in each of the plurality of first regions, the distribution of values ​​representing the relative magnitude of the target residual refractive power and the target residual astigmatism to one is rotationally symmetric with respect to a straight line passing through the fitting point and the design rotation point of the spectacle lens, or with respect to the optical axis of the spectacle lens.

3. In the method for designing eyeglass lenses according to claim 1 or claim 2, A method for designing eyeglass lenses, wherein in a first region where a finite distance is set at the same position as the rotation angle taken from a straight line passing through the design rotation point and fitting point, the target astigmatism is set to be smaller in a first region where the distance is set to a greater distance than in another first region.

4. In the method for designing eyeglass lenses according to any one of claims 1 to 3, A method for designing eyeglass lenses, wherein in the first region where a finite distance is set at a position where the magnitude of the rotation angle taken from a straight line passing through the design rotation point and fitting point is the same, the target residual refractive power is set to a more positive value than in the first region where the distance is set to infinity.

5. In the method for designing eyeglass lenses according to any one of claims 1 to 4, This includes setting a second region on the surface of the spectacle lens to be designed, A method for designing eyeglass lenses, wherein the second region is set between two first regions with different distances set, and the distances in the second region vary to connect the different distances.

6. In the method for designing eyeglass lenses according to claim 5, This includes further setting a third region inside the second region, A method for designing eyeglass lenses, wherein in the third region, the change in distance in a direction perpendicular to the trajectory of the line of sight is set to be smaller than the change in distance in a direction along the trajectory, based on the frequency with which the wearer's line of sight passes over the surface of the eyeglass lens.

7. In the method for designing eyeglass lenses according to claim 5 or 6, A method for designing eyeglass lenses, wherein the distance in at least the second region is represented by a spline function.

8. In the method for designing eyeglass lenses according to any one of claims 5 to 7, A method for designing eyeglass lenses, comprising designing the eyeglass lens such that the apparent optical axis of the eyeglass lens passes through a first region or a second region different from the first region or the second region in which the fitting point is located.

9. In the method for designing eyeglass lenses according to any one of claims 1 to 8, A method for designing spectacle lenses, wherein the second information includes at least one of the wearer's height, the wearer's posture when the wearer is performing the intended use, the position or range of the spectacle lenses through which the wearer's line of sight passes, and the position of the wearer or the object being viewed.

10. In the method for designing eyeglass lenses according to any one of claims 1 to 9, A method for designing eyeglass lenses, wherein the first and second pieces of information are entered at a location other than the retailer's store and transmitted to a computer owned by the retailer.

11. A method for manufacturing eyeglass lenses, comprising manufacturing eyeglass lenses designed by the eyeglass lens design method described in any one of claims 1 to 10.

12. A first acquisition unit acquires first information about the intended use of the eyeglass lens to be designed, and second information about the wearer's line of sight, location, and equipment used in the said use, as well as at least one of the wearer's body parts. A second acquisition unit acquires data from a storage unit that stores arrangement patterns of multiple first regions according to the aforementioned application, in which at least the multiple first regions are arranged in the X-axis direction, which is the horizontal direction when a wearer wears eyeglasses, based on the first information, which indicates the number, position, shape, size, and distance to an object viewed through each first region to be set on the surface of the eyeglass lens. Based on the second information, a variable value is set among the numerical values ​​indicating the number, position, shape, size, and distance of the plurality of first regions in the data, and the plurality of first regions and the distance are set on the surface of the eyeglass lens, wherein the second information indicates the arrangement of a 11th region, which is a first region corresponding to the first line of sight when viewing a first object located in front of the wearer, and a 12th region, which is a first region corresponding to the second line of sight when viewing a second object located to the left or right of the wearer and at a greater distance than the first object, A region setting unit sets the arrangement of the first regions of the left-eye lens and the right-eye lens asymmetrically by setting the 12th region for viewing the second object, which is located on either the left side as seen from the left-eye lens wearer and the left side as seen from the right-eye lens wearer, or the right side as seen from the left-eye lens wearer and the right side as seen from the right-eye lens wearer, and whose upper end is positioned above the Y-axis position of the fitting point of the eyeglass lens, with the Y-axis direction being the vertical direction when the wearer is wearing the eyeglasses. An eyeglass lens design apparatus comprising: a target aberration setting unit that sets a target aberration distribution of the eyeglass lens based on the set plurality of first regions and the distance.

13. The eyeglass lens design apparatus according to claim 12, An eyeglass lens ordering device comprising an input unit for receiving the first information and the second information, and a transmission unit for transmitting the first information and the second information, An eyeglass lens ordering device comprising a receiving unit for receiving the first information and the second information, and an eyeglass lens ordering system comprising these.

14. A first acquisition process that acquires first information about the intended use of the eyeglass lens to be designed, and second information about the wearer's line of sight, location, and equipment used in the said use, as well as at least one of the wearer's body parts. A second acquisition process obtains data from a storage unit that stores, based on the first information, the number, position, shape, size, and distance to an object viewed through each first region, of the multiple arrangement patterns of first regions according to the aforementioned application, in which at least the multiple first regions are arranged in the X-axis direction, which is the horizontal direction when a wearer wears eyeglasses. Based on the second information, a variable value is set among the numerical values ​​indicating the number, position, shape, size, and distance of the plurality of first regions in the data, and the plurality of first regions and the distance are set on the surface of the spectacle lens, wherein the second information indicates the arrangement of a 11th region, which is a first region corresponding to the first line of sight when viewing a first object located in front of the wearer, and a 12th region, which is a first region corresponding to the second line of sight when viewing a second object located to the left or right of the wearer and at a greater distance than the first object, A region setting process is performed to set the arrangement of the first regions of the left-eye lens and the right-eye lens asymmetrically by setting the 12th region for viewing the second object, which is located on either the left side as seen from the left-eye lens wearer and the left side as seen from the right-eye lens wearer, or the right side as seen from the left-eye lens wearer and the right side as seen from the right-eye lens wearer, and whose upper edge is positioned above the Y-axis position of the fitting point of the eyeglass lens, with the Y-axis direction being the vertical direction when the wearer is wearing the eyeglasses. A design program for causing a processing unit to perform a target aberration setting process, which sets a target aberration distribution of the spectacle lens based on the set plurality of first regions and the distance.

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