Patent ID: 8852471
Filing Date: 2014-10-07
Classification: B29C,B29L

Abstract:
1. An optical-parts molding die comprising: a fixed side die; and a movable side die, wherein die clamping operation is performed while adjusting temperatures of the fixed side die and the movable side die and a molding material is injected into a molding space formed therebetween to manufacture optical parts, the optical-parts molding die further comprising: a plurality of cavity portions each forming the molding space; and at least one temperature measuring element for acquiring a temperature value to be used for a temperature adjustment, the at least one temperature measuring element being arranged outside of each of the plurality of cavity portions as viewed from a direction perpendicular to a surface of a parting line between the fixed side die and the movable side die, wherein at least one of the fixed side die and the movable side die includes at least one electrothermal conversion element for heating the plurality of cavity portions, and a number of the plurality of cavity portions is equal to or greater than a number of the at least one electrothermal conversion element, wherein all of the plurality of cavity portions and the at least one temperature measuring element are arranged within an area occupied by the at least one electrothermal conversion element as viewed from a direction perpendicular to a surface of the parting line; wherein, as viewed from the direction perpendicular to the surface of the parting line, an interval between exteriors of the plurality of cavity portions is smaller than a minimum interval between the exteriors of the plurality of cavity portions and the at least one electrothermal conversion element, and wherein, as viewed from the direction perpendicular to the surface of the parting line, a minimum distance between the at least one electrothermal conversion element and a temperature measuring portion of the at least one temperature measuring element is smaller than a minimum interval between the exteriors of the plurality of cavity portions and the at least one electrothermal conversion element.