Optical component, method of molding optical component, and mold for optical component
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United States of America Patent
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Nov 7, 2000
Grant Date -
N/A
app pub date -
Apr 8, 1999
filing date -
Apr 13, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
This invention provides an optical component free from weld formation in its optical surface and having an excellent optical performance, a method of molding an optical component, and a mold for molding an optical component. For this purpose, an optical component as a plastic molded product having an optical function, is formed with a molding surface with a shape of a curved surface, and a flange portion between the molding surface and a gate portion. At least part of a surface constituting the flange portion is molded by injecting a molten resin along a wall surface that forms an angular difference of 15.degree. or less which is substantially equal to a tangential angle to the curvature of the curved surface of the molding surface, which is near the flange portion.
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