| 摘要 |
A forming device includes a sleeve member mountable between lower and upper mold units to hold a glass blank and having a stepped sleeve wall that defines first, second and third slot sections, and annular first and second shoulder faces. The second slot section is smaller than the third slot section and larger than the first slot section, and has top and bottom ends connected directly to the third and first slot sections. The first shoulder face extends radially at the junction of the first and second slot section to support the glass blank. A portion of the sleeve wall extends axially and upwardly from the first shoulder face to limit the glass blank from movement. The second shoulder face extends at the junction of the second and third slot sections to hold a lens formed from the glass blank.
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