A manufacturing method of a spectacle lens as set forth in claim 5, characterized in that: said spectacle lens has concealed marks or point marks an illuminator and a projected image display are opposed to each other with the spectacle lens interposed therebetween in said alignment step the optical reference position of the spectacle lens is aligned with the reference position of the marking apparatus at least in a plane for the alignment of the spectacle lens by emitting illumination light from the illuminator to said spectacle lens and bringing images of said concealed marks or point marks of the spectacle lens projected on the projected image display into agreement with alignment marks on the projected image display.ħ. A manufacturing method of a spectacle lens in which a mark is formed inside a spectacle lens by converging a laser beam inside the spectacle lens, characterized by comprising: an information acquisition step for acquiring mark information including marking positional information and mark shape information on said mark an alignment step for aligning an optical reference position of the spectacle lens with a reference position of marking apparatus including a laser beam output section at least in a plane for the alignment of the spectacle lens a positioning step for determining relative positions of said spectacle lens and the convergence position of the laser beam from the laser beam output section of the marking apparatus based on the marking positional information on said mark and a marking step for radiating the laser beam from said laser beam output section to form the mark.Ħ. A spectacle lens characterized by being manufactured by a manufacturing method of a spectacle lens as set forth in claim 1.ĥ. A manufacturing method of a spectacle lens as set forth in claim 1, characterized in that the pulse duration of said laser beam is in femtoseconds.Ĥ. A manufacturing method of a spectacle lens as set forth in claim 1, characterized in that said mark is formed within an edged shape area of the spectacle lens.ģ. A manufacturing method of a spectacle lens which produces an area changed in quality inside a spectacle lens by converging a pulsed laser beam inside the spectacle lens, and forms a desired mark by shifting the convergence position and the spectacle lens relative to each other, characterized in that: said mark is formed approximately parallel to an optical axis direction of said spectacle lens.Ģ.
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