METHOD FOR DETERMINING THICKNESS OF AN OPTICAL DISK, ESPECIALLY CONCERNED WITH DETERMINING THAT THICKNESS OF VARIOUS SIZES OF OPTICAL DISKS PRESENTS THE SAME FLUTTER AMPLITUDE PROPERTY

摘要

PURPOSE: A method for determining thickness of an optical disk is provided to determine thickness of a small-sized optical disk according to a flutter amplitude property, thereby making an optical disk as thin as possible according to a diameter of the small-sized optical disk. CONSTITUTION: Thickness of various sizes of optical disks is determined to present the same flutter amplitude property. A reference disk having 120mm in diameter and 1.2mm in thickness is used such that the optical disks can present the same flutter amplitude property. When the thickness of the optical disks is determined, the disks are manufactured as thin as possible according to the diameter of the disks.