Optical component molding apparatus

Details Optical component molding apparatus Optical component molding apparatus

2011-03-29

2011-03-29

Gupta, Yogendra N (Department: 1744)

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

C425S567000, C425S588000, C425S808000

Reexamination Certificate

active

07914273

ABSTRACT:
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 machine100has a gate51, a runner52, and a sprue53each 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.

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