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PLASTIC OPTICAL PRODUCT, PLASTIC OPTICAL FIBER, APPARATUS FOR MANUFACTURING PLASTIC OPTICAL PART, AND METHOD FOR MANUFACTURING PLASTIC OPTICAL PART AND PLASTIC OPTICAL PRODUCT
PLASTIC OPTICAL PRODUCT, PLASTIC OPTICAL FIBER, APPARATUS FOR MANUFACTURING PLASTIC OPTICAL PART, AND METHOD FOR MANUFACTURING PLASTIC OPTICAL PART AND PLASTIC OPTICAL PRODUCT
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机译:塑料光学产品,塑料光学纤维,制造塑料光学零件的设备以及制造塑料光学零件和塑料光学产品的方法
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摘要
A clad tube ( 21 ) is formed by melting and extruding a polymer, such as PMMA. The molten polymer is extruded through an extrusion die ( 12 ) to form a soft clad ( 20 ). The soft clad ( 20 ) is forwarded to a molding die ( 13 ) to correct the shape of the soft clad ( 20 ). A decompression chamber ( 31 ) in the molding die ( 13 ) is decompressed so that the outer surface of the soft clad ( 20 ) is tightly in contact with forming surface ( 30 b) of the molding die ( 13 ). After molding the soft clad ( 20 ) in the molding die ( 13 ), the clad tube ( 20 ) with low fluctuation in thickness is obtained.
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