Optical device
US6625102B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Aug 9, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/58
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an optical device that eliminates side lobes or their components from a super-resolution optical spot, and that is capable of electrically switching between super resolution and normal resolution as needed in simple manner. The optical device having a light generating unit for generating incident light and a lens system for collecting the incident light and producing a super-resolution optical spot containing a main lobe and a side lobe by modulating a portion of the incident light, comprises a polarization vector modulation unit for making polarization vectors of the side lobe and the main lobe differ from each other so that one or the other of the polarization vectors can be selected, and a polarization selective unit for eliminating the side lobe by selecting the polarization vector of the main lobe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.