| 摘要 |
PURPOSE:To provide the method for producing optical elements capable of avoiding troubles based on the sticking of a molded product to an upper die member in an automated operation by opening the molding dies at the time when the molded product released from the upper die member so that an optical element can continously be molded in good time efficiency while good accuracy of the molded element is maintained. CONSTITUTION:When the molded product (3) is released in the foundary of the molding die (1, 2) by thermal stress during cooling, this state is detected by a specified detecting means. Then according to this signal, the die member is moved to open the dies from which the molded product (3) can be taken out. |
