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A PROCESS FOR MANUFACTURING AN OPTICAL ELEMENT BY HOT FORMING A GLASS SHEET USING PRESSURE DIFFERENCE
A PROCESS FOR MANUFACTURING AN OPTICAL ELEMENT BY HOT FORMING A GLASS SHEET USING PRESSURE DIFFERENCE
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机译:通过利用压力差热成型玻璃板制造光学元件的方法
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摘要
A process for manufacturing an optical element by hot-forming a glass sheet (2), comprising the steps of: positioning a mold (4) in a cavity (9) of a base element (7) of a muffle (6); positioning the sheet (2) on the mold (4) with a peripheral edge superimposed on a closure area (14, 15) of the base element (7) surrounding the cavity (9); closing a cover (8) of the muffle (6) onto the base element (7), so as to maintain the peripheral edge of the glass sheet (2) in contact with the closure area (14, 15) of the base element (7); and performing a controlled heating and cooling thermal cycle, by applying a pressure difference between the base element (7) and the cover (8) so as to press the glass sheet (2) onto the mold (4) after reaching the maximum temperature.
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