Patent ID: 7159980

Claim:
A progressive power lens that is structured by two refracting surfaces of an object-side refracting surface and an eyeball-side refracting surface, comprising: a distance portion mainly for viewing objects in a distance range; a near portion mainly for viewing objects in a close range; and an intermediate portion mainly for viewing objects in an intermediate range in which a successive change is observed for power from the distance portion to the near portion, and a distance reference point is set to the distance portion and a near reference point is set to the near portion, characterized in that when the lens is presumably a reference spherical surface in its entirety that is defined by an average curvature of the eyeball-side refracting surface in a vicinity of the distance reference point, the eyeball-side refracting surface in a vicinity of the near reference point is located closer to an eyeball side than the reference spherical surface in a vicinity of the near reference point, wherein the eyeball-side refracting surface is a progressive surface.