| 摘要 |
<p>Provided is a die manufacturing method capable of forming a die having multiple transfer surfaces of differing optical axis positions with good precision by lathe turning. The die material (1) is fixed to a jig (2) by abutting the nth (n is an integer of 1-4) side (SDn) of the die material (1) against the X-direction reference surface (2b) of the jig (2), and abutting the (n+1)th (when n is 4, n=1) side of the die material (1') against the Y-direction reference surface (2c) of the jig (2). Then, the die material (1') is cut with a lathe while rotating the jig (2) and the die material (1) as a unit to form the nth transfer surface. Subsequently, n is increased by 1 and the process described above is repeated.</p> |
