Optical lens and method of manufacturing the same
US7499220B2 · kind B2 · utility
1Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2006 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Aug 5, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76735
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In an optical lens including a lens portion having a convex or concave lens surface on each side, each lens surface of the lens portion has a convex portion of a small projection centered on the optical axis thereof, and the convex portion has the height which is approximately less than four times the used wavelength so as not to have an effect on an optical characteristic of the lens portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.