Spectacle lens, manufacturing method thereof and lens supply system

A lens supply system, comprising:

• an initial shape data obtaining unit configured to obtain initial shape data of a spectacle lens;
• and
• a shape data correcting unit configured to correct the initial shape data such that prismatic effect distribution which light rays in respective visual line directions passing through a center of an eye assumed in optical design receive from an initial lens manufactured based on the initial shape data coincide with or approach a state of a naked eye not having prismatic effect distribution, while maintaining a base curve before and after correction,
• wherein the shape data correcting unit calculates a shift amount between the prismatic effect distribution which the light rays receive from the initial lens and a state where the light rays do not receive prismatic effect distribution, and corrects at least one of a convex surface and a concave surface of the initial lens such that the calculated shift amount in a peripheral region of the initial lens falls within a predetermined tolerance.

A manufacturing method for a spectacle lens, comprising:

• obtaining initial shape data of a spectacle lens;
• correcting the initial shape data such that, when a base curve of an initial lens manufactured based on the initial shape data is defined as a first base curve, a predetermined lens having a second base curve lower than the first base curve is defined as a target spectacle lens, prismatic effect distribution which light rays in respective visual line directions passing through a center of an eye assumed in optical design receive from the initial lens coincide with or approach prismatic effect distribution which the light rays receive from the target spectacle lens, while maintaining the first base curve before and after correction;
• and
• manufacturing step of manufacturing the spectacle lens based on the corrected initial shape data,
• wherein the correcting the initial shape data comprises:
• calculating a shift amount between the prismatic effect distribution which the light rays receive from the initial lens and the prismatic effect distribution which the light rays receive from the target spectacle lens;
• and
• correcting at least one of a convex surface and a concave surface of the initial lens such that the calculated shift amount in a peripheral region of the initial lens falls within a predetermined tolerance.