GLASS LENS BLANK FOR POLISHING, MANUFACTURING METHOD THEREFOR, AND OPTICAL LENS MANUFACTURING METHOD

摘要

[Problem] To provide a glass lens blank for polishing with which the thickness of a defect containing layer can be kept to a minimum and for which the processing time required for grinding and polishing after press forming of the glass lens blank for polishing can be reduced, and to provide a manufacturing method therefor, and an optical lens manufacturing method. [Solution] A glass lens blank for polishing (2) at least the main surface of which is a press-formed surface, and in which the thickness of a defect containing layer (2a) formed on the main surface is no more than 50μm.