Abstract:
While having a milling cutter, equipped with a rotary shaft and a blade portion projecting in the direction intersecting with the axial line direction of the rotary shaft, rotated about the axial line of said rotary shaft, the milling cutter and the base material for forming an optical device are relatively moved in the cutting-in direction and the feed direction to form machining faces that constitute the device face. At the boundary part of the machining faces, the rotary shaft is directed in the direction orthogonal to the boundary part to cut the lower machining face of two adjacent machining faces.The objective is to provide a method for manufacturing an optical device in which a step can be formed at the boundary part between two adjacent machining faces when manufacturing an optical device or a mold by cutting, and to provide an optical device.
Abstract:
A grating forming method for forming a fine grating with a grating period of at most 1 μm on a surface of a blank material including (1) feeding realatively a diamond cutting tool and the blank material in a groove extended direction while rotating the diamond cutting tool about the axial line and (2) cutting the surface of the blank material with a blade tip part of the diamond cutting tool to form the grooves while rotating and feeding the diamond cutting tool. When the fine grating with the grating period of “P” μm is formed and the feed amount per revolution of the diamond cutting tool is set to be “S” μm, the feed amount per revolution “S”, with which the diamond cutting tool is fed in the groove extended direction while rotating the diamond cutting tool about the axial line, is set to satisfy the following conditional expression: S
Abstract:
A grating forming method for forming a fine grating with a grating period of 1 μm or less on a surface of a blank material including cutting the surface of the blank material with a blade tip part of a diamond cutting tool. When the fine grating with the grating period of “P” μm is formed and the feed speed of the diamond cutting tool is set to be “F” mm/min, the feed speed “F” is set to satisfy the conditional expression: F
Abstract translation:一种光栅形成方法,用于在坯料的表面上形成光栅周期为1μm或更小的精细光栅,包括用金刚石切割工具的刀片尖端部分切割坯料的表面。 当形成光栅周期为“P”mum的精细光栅并且金刚石切削刀具的进给速度设定为“F”mm / min时,进给速度“F”被设定为满足条件表达式:F <1 0 0 P <3。 金刚石切削工具在与坯料表面垂直的方向上的振幅设定为“A”,振幅“A”设定为满足下列条件式:A <0。 0 1 8 P <2>。 金刚石切削刀具的每转的进给量被设定为“S”,每转的进给量“S”被设定为满足以下条件表达式:S <2。 9 P <3>。 这些条件表达式被应用于坯料,成型模具,模制产品和用于制造成型模具的主构件。