Lens having at least one lens centration mark and methods of making and using same
US6951392B2 · kind B2 · utility
3Cited by
29References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2003 |
| Grant date | Oct 4, 2005 |
| Priority date | — |
| Expiry date | Jul 9, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B13/0055
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A lens having at least one lens centration mark formed on a major surface of the lens is disclosed. The lens centration mark may be located at the intersection of a first axis and the major surface, where the major surface is symmetrical about the first axis such that the first axis is an axis of revolution of the surface. A method of making a lens having such lens centration mark, as well as a method for measuring the centration of a lens surface utilizing the lens centration mark, are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.