Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Optical fiber – waveguide – or preform
Patent
1998-02-20
2000-06-20
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Optical fiber, waveguide, or preform
264 25, 264219, 264314, 264335, 264DIG78, 425440, 425DIG44, 425DIG60, B29D 1100
Patent
active
060774622
ABSTRACT:
An apparatus and method for seamless closed mold microreplication using a one-piece expandable mold are disclosed. The apparatus includes an expandable mold having a plurality of microstructured features on the inner surface thereof. The apparatus also includes a means for elastically expanding the mold in order to remove the finished molded article. The expandable mold may be used to make seamless articles having microstructured features, such as an illumination device comprising a fiber core having a plurality of microstructured light extraction structures on the surface thereof.
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Cheryl Vrieze and David Lundin, "Matching the Model: Plastic Light Fiber Extraction Targeted at SAE Specifications", Society of Automotive Engineers, Inc., 1998.
Eliason Kevin M.
Lundin David J.
3M Innovative Properties Company
Pechman Robert J.
Vargot Mathieu D.
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