Method of forming a convergent lens in a plate of transparent mineral material
US4584799A · kind A · utility
13Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1984 |
| Grant date | Apr 29, 1986 |
| Priority date | — |
| Expiry date | Apr 2, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B13/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method is described of forming a circular convergent lens in a plate of transparent mineral material, which involves grinding the lens with a grinding member having a lesser diameter than the lens and imparting an oscillatory motion to the plate relatively to the grinding wheel. This method also enables self-dressing of the grinding member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.