Patent ID: 7771815

Claim:
A molding glass lens formed by a glass preform in set between cavities of upper and lower molding units of a mold being pressured and heated comprising: a first optical surface on one side of the lens, a first outer surrounding the first optical surface, a second optical surface on the other side of the lens and a second outer surrounding the second optical surface; wherein the first optical surface and the second optical surface are optical areas while the first outer and the second outer are non-optical areas being used as contacting surfaces for assembling; wherein, the molding glass lens is characterized in that: at least three grooves disposed in the form of a circle are arranged on at least one of the outers and the groove is formed due to a corresponding protrudent part of the mold for air-exhaust; the groove is indented to surfaces of the outer and thus has no effect on assembling of the molding glass lens; wherein, the mold comprises an upper molding unit and a lower molding unit while a cavity of each molding unit having a central optical part for forming an optical surface of the lens and an outer circular part for forming a outer of the lens; wherein, the mold is characterized in that: at least three protrudent parts with the same height arranged in the form of a circle are disposed on the outer circular part of the at least one molding unit.