Direct casting method for producing low-stress glass/plastic composite lenses
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United States of America Patent
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Oct 14, 1980
Issued Date -
N/A
app pub date -
Apr 5, 1979
filing date -
Apr 5, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A glass-plastic composite lens combining a glass element with a high-shrinkage thermosetting plastic is provided in accordance with a direct casting process comprising a consolidation heating step, subsequent to plastic curing and shrinkage, during which a thermoplastic coating between the glass element and the cured plastic bonds the assembly into a unitary low-stress composite.
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Cited Art Landscape
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