摘要:
A method for molding a chalcogenide glass lens includes providing a mold. A preformed lens of chalcogenide glass is placed within the mold. The lens has a top surface and a bottom surface. An amount of chalcogenide glass is deposited within the mold and on the top surface of the preformed lens. The mold is heated, such that the chalcogenide glass on the top surface of the preformed lens softens, melts, and bonds to the top surface of the preformed lens. A lens surface is formed in the melted chalcogenide glass to form a molded lens which is bonded to the top surface of the preformed lens. The molded lens and preformed lens assembly is then removed from the mold.
摘要:
An object of the present invention is to provide a press forming machine for glass optical devices which is superior in the temperature uniformity and has a low manufacturing cost. An upper die is fixed to a lower end of a fixed shaft, and a lower die is fixed to an upper end of a moving shaft. The upper die and the lower die are accommodated in a quartz tube, and a forming chamber in which atmosphere adjustment is possible is formed inside the quartz tube. An infrared lamp unit is arranged so as to surround the quartz tube. The infrared lamp unit is constituted by a plurality of straight tube type infrared lamps each of which has a vertical axis, and a reflecting mirror is arranged behind each infrared lamp. In this example, straight tube type infrared lamps are used in the infrared lamp unit.
摘要:
Disclosed is a mold including upper and lower molds for obtaining glass optical elements by press molding a glass molding material softened by heat, in which either one of the upper and lower molds is made of a ceramic matrix and the matrix has no surface hole having a diameter of 300 microns or more on the molding surface, and a method for manufacturing glass optical elements using the mold. For example, on the upper mold 21 and the lower mold 22, formed is a &bgr; type silicon carbide having a thickness that a molding surface can be reproduced by grinding and a density of 3.20 g/cm3 or more so as to include at least the molding surface facing a surface of the glass molding material G. The mold according to the invention can be reused even where pullouts occur from repetitive use.
摘要翻译:公开了一种模具,其包括上模和下模,用于通过加压模制由热软化的玻璃成型材料获得玻璃光学元件,其中上模具和下模具中的任一个由陶瓷基体制成,并且基体没有表面孔, 在成型面上的直径为300微米以上,以及使用该模具制造玻璃光学元件的方法。 例如,在上模具21和下模具22上形成的是具有通过研磨再现成型面的厚度的β型碳化硅,密度为3.20g / cm 3以上,至少包含 模制表面面向玻璃模制材料G的表面。即使在重复使用时出现突起,根据本发明的模具也可以重复使用。