Diffraction grating, light source unit applying the same therein, and optical head device employing the same
US7164532B2 · kind B2 · utility
6Cited by
15References
15Claims
0Family size
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Key dates
| Filing date | Apr 16, 2003 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | Oct 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A polarization diffraction grating includes two media having different orientation states arranged alternately and cyclically, wherein each boundary between the media forms an oblique rectangular shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.