Patent ID: 6250992
Filing Date: 2001-06-26
Classification: B24B

Abstract:
A mirror surface grinding method for grinding an optical glass material into a desired shape, and polishing a surface of the optical glass material into a mirror surface using different faces of a grinding stone, the grinding stone being formed by attaching grinding particles thereto with a conductive bonding material, the method comprising the steps of:applying a voltage to the grinding stone;supplying the grinding stone with a polishing solution which contains charged fine particles, thereby electrically attaching the charged fine particles to the grinding stone;bringing the grinding stone into contact with the optical glass material; androtating and moving the grinding stone relative to the optical glass material along a final shape to be generated from the optical glass material, thereby grinding, including cutting, and removing an unnecessary portion of the optical glass material, using a side face portion of the grinding stone, and at the same time polishing the final shape surface of the optical glass material into a mirror surface using the charged fine particles attached to a front face portion of the rotating and moving grinding stone, the front face portion being different from the side face portion.