| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical lens molding apparatus comprising a first mold core, a second mold core, two internal sleeves and an external sleeve. <P>SOLUTION: The first and the second mold cores have a first coefficient of thermal expansion. The two internal sleeves are co-axially assembled with the first mold core and the second mold core respectively and have a second coefficient of thermal expansion. Furthermore, the external sleeve has a first inner diameter and a second inner diameter. The first mold core and the second mold core are co-axially assembled into the external sleeve having the first inner diameter such that a cavity is formed between the two mold cores. The two internal sleeves are co-axially assembled into the external sleeve having the second inner diameter. The external sleeve has a third coefficient of thermal expansion smaller than the first and second coefficients of thermal expansion. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
