Optical pickup lens, molded optical component, handling method, and mold for optical component
US7012767B2 · kind B2 · utility
3Cited by
4References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2004 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Feb 28, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a projecting section integrally provided to the lens section. The objective lens satisfies the following conditional formulas:0.5≦A≦2.0, 0.3A≦B≦1.7Awhere A is a diameter (mm) of the lens section when the lens section is viewed from an direction of an optical axis, and B is a width (mm) of the projecting section when the connecting section is viewed from the direction of the optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.