| 摘要 |
<p>The method involves using non-machining prefabricated pre-edged lens, with plastic or silicate glass that is particularly circular in shape and has a middle axis (M) upright to the pre-edged lens. A non-machine finished front side (11) and an opposite lying rear side are machine finished by computerized numerical control (CNC) machine. The front and rear sides have an optical focal point, such that the spectacle lens is a convex and rotationally symmetric free-forming surface (21).</p> |
