Lens shape measuring apparatus
US5984763A · kind A · utility
3Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B49/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A lens shape measuring apparatus is provided which comprises lens rotating shafts (16, 17) for rotatably holding an uncut lens, a feeler (63, 219, 220) disposed in contact with a working locus of the front or rear surface of the lens, and a calculation/control circuit (100) for detecting a difference in surface level of the lens from a change in data measured by the feeler (63, 219, 220) and controlling the contact of the feeler with the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.