Optical component molding apparatus

摘要

A purpose is to provide an optical component molding apparatus for producing a small-size and high-precision optical component and achieving good transferability and stability of a molded product. A multi-cavity molding machine 100 has a gate 51, a runner 52, and a sprue 53 each having the shape determined to meet conditions (1) to (5): (1)“Miminum gate thickness”/“Maximum runner thickness”is in a range of more than 0.2 to less than 1.0; (2)“Gate length”/“Maximum runner thickness”is in a range of more than 0.4 to less than 4.0; (3)“Outlet diameter of sprue”is in a range of more than 1.0 mm to less than 5.5 mm; (4)“Sprue length”is in a range of more than 10 mm to less than 40 mm; and (5)“Outlet diameter of sprue”/“Inlet diameter of sprue”is in a range of more than 1 to less than 8.