Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Abstract: A spectacle lens including a prism prescription that has an eyeball-side optical surface. When one side is the same side as a prism base direction (nose side) and the other side is an opposite side of the prism base direction with a direction orthogonal to the prism base direction passing through a prism measurement reference point as a boundary, a minimum value of a curvature of the eyeball-side optical surface is on the same side as the prism base direction (nose side). Since a mean curvature becomes smaller in the prism base direction than a mean curvature of the prism measurement reference point and becomes larger in the opposite direction than the mean curvature of the prism measurement reference point across the prism measurement reference point, deviation in line of sight between right and left eyes is resolved.

Abstract: In a spectacle lens added with prism thinning, a spherical refractive power of a first refractive portion is positive, and a prism base direction of a prism provided at a prism measurement reference point is set toward a second refractive portion side; a mean value of a difference of a mean curvature in a lens curved surface along a direction passing through a midpoint of a connecting line between two alignment reference marks and orthogonal to the connecting line with respect to a mean curvature in a lens curved surface along a direction of a lens without prism is smaller in a first-refractive-portion-side region from a fitting point than that in a second-refractive-portion-side region from the fitting point.

Abstract: A method for designing, by means of a computer, at least one surface of a lens for a user. The method includes the steps of (i) obtaining displacement information on an amount of displacement between a user specific fitting position and a reference position, the reference position representing a primary fitting point of a lens surface on a reference line of sight of an eye of the user, and the user specific fitting position representing a user specific fitting point of the lens surface determined on the basis of the user; and (ii) causing calculating a design of the at least one surface of the lens on the basis of said displacement information.

Abstract: Described herein are methods and systems for customizing and personalizing eyewear. The methods and system consider optimal parameters for each wearer's personal visual situation and configures frames around them.

Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Abstract: A parallel link robot includes a base having an axis, a movable portion movable along the axis so as to pick a workpiece in a first working region and place the workpiece in a second working region, and first, second and third arms arranged around the axis to form first, second, and third angles between the first, second and third arms. Each of the arms connects the base and the movable part to move the movable part along the axis. The third angle is less than 120 degrees. The first angle and the second angle are equal. The first and third arms are positioned on a side of the first working region with respect to the axis. The second arm is positioned on a side of the second working region with respect to the axis.

Abstract: A parallel link robot includes a base, a movable part, link mechanisms, and actuators. The movable part is movable along a center axis. The first, second and third link mechanisms are provided around the center axis with angular intervals in a circumferential direction around the center axis to project outwardly along a radial direction with respect to the center axis. Each of the first, second and third link mechanisms connects the base and the movable part to move the movable part along the center axis. The angular intervals have an acute angular interval with an acute angle. The first, second and third actuators are provided at the base to be connected to the first, second and third link mechanisms respectively so as to drive the first, second and third link mechanisms respectively.

Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Abstract: A method for designing, by means of a computer, at least one surface of a lens for a user. The method includes the steps of (i) obtaining displacement information on an amount of displacement between a user specific fitting position and a reference position, the reference position representing a primary fitting point of a lens surface on a reference line of sight of an eye of the user, and the user specific fitting position representing a user specific fitting point of the lens surface determined on the basis of the user; and (ii) causing calculating a design of the at least one surface of the lens on the basis of said displacement information.

Abstract: A spectacle lens including a prism prescription that has an eyeball-side optical surface. When one side is the same side as a prism base direction (nose side) and the other side is an opposite side of the prism base direction with a direction orthogonal to the prism base direction passing through a prism measurement reference point as a boundary, a minimum value of a curvature of the eyeball-side optical surface is on the same side as the prism base direction (nose side). Since a mean curvature becomes smaller in the prism base direction than a mean curvature of the prism measurement reference point and becomes larger in the opposite direction than the mean curvature of the prism measurement reference point across the prism measurement reference point, deviation in line of sight between right and left eyes is resolved.

Abstract: In a spectacle lens added with prism thinning, a spherical refractive power of a first refractive portion is positive, and a prism base direction of a prism provided at a prism measurement reference point is set toward a second refractive portion side; a mean value of a difference of a mean curvature in a lens curved surface along a direction passing through a midpoint of a connecting line between two alignment reference marks and orthogonal to the connecting line with respect to a mean curvature in a lens curved surface along a direction of a lens without prism is smaller in a first-refractive-portion-side region from a fitting point than that in a second-refractive-portion-side region from the fitting point.

Abstract: A parallel link robot includes a base, a movable part, link mechanisms, and actuators. The movable part is movable along a center axis. The first, second and third link mechanisms are provided around the center axis with angular intervals in a circumferential direction around the center axis to project outwardly along a radial direction with respect to the center axis. Each of the first, second and third link mechanisms connects the base and the movable part to move the movable part along the center axis. The angular intervals have an acute angular interval with an acute angle. The first, second and third actuators are provided at the base to be connected to the first, second and third link mechanisms respectively so as to drive the first, second and third link mechanisms respectively.

Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Abstract: Described herein are methods and systems for customizing and personalizing eyewear. The methods and system consider optimal parameters for each wearer's personal visual situation and configures frames around them.

Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Abstract: An aligning prism amount determination device to determine an aligning prism amount for correcting fixation disparity of a spectacle wearer, having the fixation disparity, includes a determiner to determine an aligning prism amount to be uniformly included in the spectacle lens for correcting the fixation disparity, based on a first aligning prism amount obtained by measuring an aligning prism amount of the spectacle wearer at an eye examination distance corresponding to a first distance, a second aligning prism amount obtained by measurement at an eye examination distance corresponding to a second distance shorter than the first distance, and information used for allocation of the first aligning prism amount and the second aligning prism amount, within a prism prescription range between the first aligning prism amount and the second aligning prism amount.