Molding device for forming compact lens barrel
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United States of America Patent
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Jun 18, 2013
Grant Date -
Aug 23, 2012
app pub date -
Dec 28, 2011
filing date -
Feb 22, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A molding device for forming a compact lens barrel includes a first mold part and a second mold part. The first mold part includes a generally cylindrical molding recess with an opening defined at an end thereof. The first mold part has a bottom surface facing toward the opening. A first protrusion is formed on the bottom surface. The first protrusion has a round, first top surface. The second mold part includes a core insert and a second protrusion formed on the core insert. The second protrusion has a round, second top surface. The second mold part is received in the molding recess with the second top surface contacting the first top surface. An annular surface portion of one of the first top surface and the second top surface is exposed. The annular surface portion has a width equal to or less than 0.005 mm.
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