Optical component molding apparatus

Details Optical component molding apparatus Optical component molding apparatus

2008-09-23

2008-09-23

Heitbrink, Tim (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With coupling between charger and mold

C425S808000

Reexamination Certificate

active

11257723

ABSTRACT:
An apparatus for molding optical components of a small size and high precision is provided with good transferability and a reduced production cycle. This apparatus includes a plurality of runners arranged in a pattern allowing multi-cavity molding for molding plastic lenses each having an outer diameter of 2 mm to 12 mm and surface roughness Ra of 20 nm or less. The total projected area of the runners is determined within a range of 1 cm2to 12 cm2. The runners are arranged to extend around a sprue in directions perpendicular to an outer surface of the base molds. The pattern of the runners extending from the junction with the sprue to each shape transfer section is configured in two intersecting directions. A cavity is of a rectangular outer shape when seen from a pressure contact surface side.

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English abstract and computer translation for JP 2003-245946.
Herbert Rees, Understanding Injection Molding Design, 2001, Hanser Publishers, pp. 59, 63 and 64.
International Search Report for International Application No. PCT/JP2005/019096 dated Jan. 24, 2006.

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