Final polishing of optical lenses - uses polishing pad which is interposed between primary grinding surface and lens

摘要

The system is for applying the finishing grinding and polishing phase to an optical lens (38). A polishing pad (32) is interposed between the lens and the 'rough' primary grinding surface (30). The grinding machine includes a lens support (30) which locates at a specific station on a lens surfacing machine. The polishing is effected with the support maintaining its station. The grinding surface may comprise diamond particles of 20 to 100 microns in size. The particles may be uniformly distributed on and bonded to the working surface. A liquid polishing paste may be fed (44) between the grinding surface and the lens.