Method of manufacturing a spectacle lens, finished uncut spectacle lens and semi-finished lens blank

A finished uncut spectacle lens comprising:

• a curved front surface including an optical bowl with a convex curvature;
• and
• a peripheral lentic zone surrounding the optical bowl,
• wherein the curvature of the curved front surface in the peripheral lentic zone deviates from the convex curvature of the optical bowl,
• wherein the lens has a concavely curved back surface which includes a concave effective curvature which provides, together with the convex curvature of the optical bowl, a prescribed optical correction, and the effective curvature has a radius of curvature that is smaller than the radius of curvature of the front surface in the peripheral lentic zone,
• wherein the optical bowl with the convex curvature extends over an area of the spectacle lens that is large enough to cover a frame contour of a frame to which the spectacle lens shall be glazed, and
• wherein the concavely curved back surface is also concave in the peripheral lentic zone, and the radius of curvature of the front surface in the peripheral lentic zone is an infinite radius.

A semi-finished lens blank for manufacturing a spectacle lens, the semi-finished lens blank comprising:

• a curved front surface including an optical bowl with a convex curvature;
• and
• a back surface with a concave curvature and a peripheral lentic zone surrounding the optical bowl,
• wherein the curvature of the curved front surface in the peripheral lentic zone deviates from the convex curvature of the optical bowl,
• wherein the optical bowl with the convex curvature extends over an area of the semi-finished lens blank that is large enough to cover a frame contour of a frame to which the spectacle lens to be manufactured from the semi-finished lens blank shall be glazed, and
• wherein the concave curvature of the back surface is also present in the peripheral lentic zone, and the radius of curvature of the front surface in the peripheral lentic zone is an infinite radius.

A finished uncut spectacle lens comprising:

• a curved front surface including an optical bowl with a convex curvature;
• and
• a peripheral lentic zone surrounding the optical bowl,
• wherein the curvature of the curved front surface in the peripheral lentic zone deviates from the convex curvature of the optical bowl,
• wherein the finished uncut lens has a concavely curved back surface that includes a concave effective curvature which provides, together with the convex curvature of the optical bowl, a prescribed optical correction, and the effective curvature has a radius of curvature that is smaller than the radius of curvature of the front surface in the peripheral lentic zone, and
• wherein the radius of curvature of the front surface in the peripheral lentic zone is an infinite radius, and the concavely curved back surface is also present in the peripheral lentic zone.

A semi-finished lens blank for manufacturing a spectacle lens, the semi-finished lens blank comprising:

• a curved front surface including an optical bowl with a convex curvature;
• a peripheral lentic zone surrounding the optical bowl;
• and
• a back surface with a concave curvature,
• wherein the curvature of the curved front surface in the peripheral lentic zone deviates from the convex curvature of the optical bowl, and
• wherein the radius of curvature of the front surface in the peripheral lentic zone is an infinite radius, and the concavely curved back surface is also present in the peripheral lentic zone.